@import url('https://fonts.googleapis.com/css2?family=Noto+Sans:wght@700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Rounded:wght@700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');
/* ========================================
   iOS Safari 相容性修正
   ======================================== */

/* HTML & Body 基礎修正 */
html {
    overflow-x: hidden;
    width: 100%;
    -webkit-user-select: text;
    -webkit-touch-callout: none;
}

body {
    background: var(--gradient-bg);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.5;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
    -webkit-tap-highlight-color: transparent;
    -webkit-user-select: text;
    /* iOS Safari 防止頁面縮放 */
    -webkit-text-size-adjust: 100%;
}

/* 廣告橫幅 iOS 修正 */
.advertisement-banner {
    position: fixed;
    top: max(0px, env(safe-area-inset-top));
    left: 0;
    right: 0;
    z-index: 1001;
    background: linear-gradient(135deg, #F97316 0%, #FB923C 100%);
    padding: 6px 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    transition: transform 200ms ease-out, opacity 200ms ease-out;
    height: 40px;
    width: 100%;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

@supports (padding: max(0px)) {
    .advertisement-banner {
        top: max(0px, env(safe-area-inset-top));
        padding-left: max(12px, env(safe-area-inset-left));
        padding-right: max(12px, env(safe-area-inset-right));
    }
}

/* 頂部應用欄 iOS 修正 */
.top-app-bar {
    position: fixed;
    top: calc(var(--banner-height) + 5px);
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.9);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    height: var(--header-height);
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all 0.3s;
    width: 100%;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

@supports (padding: max(0px)) {
    .top-app-bar {
        padding-left: max(16px, env(safe-area-inset-left));
        padding-right: max(16px, env(safe-area-inset-right));
    }
}

/* 行動選單 iOS 修正 */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 85%;
    max-width: 320px;
    background: var(--color-bg);
    box-shadow: 8px 0 16px rgba(0, 0, 0, 0.1), 4px 0 8px rgba(0, 0, 0, 0.05);
    z-index: 1001;
    transform: translateX(-100%);
    transition: transform var(--transition-smooth);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    -webkit-transform: translateX(-100%);
}

/* 按鈕 iOS 修正 */
.btn,
.btn-primary,
.btn-secondary,
.btn-filled,
.btn-outlined,
.btn-text {
    -webkit-appearance: none;
    -webkit-border-radius: var(--radius-lg);
    font-size: 16px;
}

/* 輸入框 iOS 修正 */
.form-control,
.md-text-field input,
.md-text-field textarea,
.md-select-field .form-select {
    -webkit-appearance: none;
    -webkit-border-radius: var(--radius-lg);
    font-size: 16px;
    /* 防止 iOS 自動縮放 */
}

/* Select 下拉箭頭修正 */
.md-select-field .form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23333' d='M10.293 3.293L6 7.586 1.707 3.293A1 1 0 00.293 4.707l5 5a1 1 0 001.414 0l5-5a1 1 0 10-1.414-1.414z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 12px;
    padding-right: 32px;
}

/* Claymorphism Theme */
:root {
    /* Color Palette - Claymorphism Pastel */
    --primary-peach: #FDBCB4;
    --primary-blue: #ADD8E6;
    --primary-mint: #98FF98;
    --primary-lilac: #E6E6FA;
    --primary-pink: #FFB6C1;
    --primary-yellow: #FFFACD;

    /* Neutral Colors */
    --white: #FFFFFF;
    --light-bg: #F5F7FA;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-muted: #999999;

    --error: #FF6B6B;

    /* Added variables for login.html footer style */
    --color-text: #333333;
    --color-primary: #ADD8E6;
    --color-bg: #F8FAFC;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #3B82F6 0%, #60A5FA 100%);
    --gradient-bg: linear-gradient(135deg, #F8F9FA, #E8F4F8);

    /* Claymorphism Shadows - Double shadow effect (inner + outer) */
    --shadow-clay:
        6px 6px 12px rgba(30, 41, 59, 0.15),
        -6px -6px 12px rgba(255, 255, 255, 0.7),
        inset 0 0 0 1px rgba(255, 255, 255, 0.5);
    --shadow-clay-hover:
        8px 8px 16px rgba(30, 41, 59, 0.2),
        -8px -8px 16px rgba(255, 255, 255, 0.8),
        inset 0 0 0 1px rgba(255, 255, 255, 0.6);
    --shadow-clay-light: inset -1px -1px 4px rgba(0, 0, 0, 0.05), 2px 2px 8px rgba(0, 0, 0, 0.1);

    /* Typography */
    --font-heading: 'Plus Jakarta Sans', 'Fredoka', sans-serif;
    --font-body: 'Plus Jakarta Sans', 'Nunito', sans-serif;

    /* Shape - Claymorphism requires larger border radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --radius-2xl: 2.5rem;
    --radius-full: 9999px;
    --radius-clay: 24px;
    --radius-clay-sm: 16px;
    --radius-clay-lg: 32px;

    /* Borders */
    --border-width: 3px;
    --border-color: rgba(255, 255, 255, 0.8);
    --border-clay: 4px;
    --border-clay-sm: 3px;

    /* Layout */
    --header-height: 64px;
    --drawer-width: 220px;
    --drawer-width-min: 180px;
    --drawer-width-max: 400px;
    --input-panel-width: 35%;
    --input-panel-width-min: 25%;
    --input-panel-width-max: 55%;
    --template-panel-width: 25%;
    --template-panel-width-min: 15%;
    --template-panel-width-max: 35%;
    --banner-height: 40px;
    --banner-height-desktop: 48px;

    /* Transitions */
    --transition-smooth: 200ms ease-out;
    --transition-fast: 150ms ease-out;
}

/* Advertisement Banner */
.advertisement-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1001;
    /* Highest z-index to stay on top */
    background: linear-gradient(135deg, #F97316 0%, #FB923C 100%);
    /* Orange gradient */
    padding: 6px 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    transition: transform 200ms ease-out, opacity 200ms ease-out;
    /* Optimize for minimal height on mobile */
    height: 40px;
    width: 100%;
}

@media (min-width: 640px) {
    .advertisement-banner {
        padding: 12px 20px;
        height: var(--banner-height-desktop);
    }
}

.advertisement-banner.hidden {
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    height: 0;
    padding: 0;
    min-height: 0;
}


.promo-content {
    display: flex;
    align-items: center;
    gap: 8px;
    /* Smaller gap on mobile */
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
    position: relative;
}

@media (min-width: 640px) {
    .promo-content {
        gap: 12px;
        flex-wrap: nowrap;
        justify-content: flex-start;
    }

    .promo-content::before,
    .promo-content::after {
        content: '';
        flex: 1;
    }
}

.promo-text {
    color: white;
    font-weight: 600;
    margin: 0;
    /* Mobile: Smaller text and allow wrapping */
    font-size: 0.7rem;
    text-align: center;
    line-height: 1.2;
    /* Allow text to wrap on small screens */
    max-width: 100%;
    flex: 1;
    min-width: 150px;
}

@media (min-width: 480px) {
    .promo-text {
        font-size: 0.75rem;
    }
}

@media (min-width: 640px) {
    .promo-text {
        font-size: 0.9rem;
        line-height: 1.4;
        flex: 0 0 auto;
        min-width: auto;
        text-align: center;
    }
}

.btn-promo {
    background: white;
    color: #F97316;
    /* Orange text */
    /* Mobile: Ultra compact sizing */
    padding: 5px 14px;
    border-radius: 18px;
    border: 2px solid white;
    font-weight: 700;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 150ms ease-out;
    white-space: nowrap;
    box-shadow: var(--shadow-md);
    flex-shrink: 0;
}

@media (min-width: 480px) {
    .btn-promo {
        padding: 6px 16px;
        font-size: 0.8rem;
    }
}

@media (min-width: 640px) {
    .btn-promo {
        padding: 8px 20px;
        font-size: 0.9rem;
    }
}

.btn-promo:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.promo-close {
    position: relative;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    padding: 4px;
    cursor: pointer;
    color: white;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 150ms ease-out;
    flex-shrink: 0;
    min-width: 28px;
    min-height: 28px;
}

@media (min-width: 640px) {
    .promo-close {
        flex-shrink: 0;
    }
}

@media (max-width: 640px) {
    .promo-close {
        width: 24px;
        height: 24px;
        min-width: 24px;
        min-height: 24px;
        padding: 2px;
    }
}

.promo-close:hover {
    background: rgba(255, 255, 255, 0.4);
}

.promo-close svg {
    width: 14px;
    height: 14px;
}

/* Banner height is now handled by app-shell margin-top */
/* No need for body padding since banner and top-app-bar are fixed */

/* Material Symbols icon alignment fix */
.material-symbols-outlined {
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: middle;
}

* {
    box-sizing: border-box;
}

html {
    overflow-x: hidden;
    width: 100%;
}

body {
    background: var(--gradient-bg);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.5;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

/* Background Gradient Orbs - Soft pastel orbs */
body::before,
body::after {
    content: '';
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    pointer-events: none;
    z-index: 0;
}

body::before {
    width: 24rem;
    height: 24rem;
    background: var(--primary-peach);
    top: 0;
    left: 25%;
    animation: float 20s ease-in-out infinite;
}

body::after {
    width: 24rem;
    height: 24rem;
    background: var(--primary-blue);
    top: 5rem;
    right: 25%;
    animation: float 15s ease-in-out infinite reverse;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) translateX(0);
    }

    33% {
        transform: translateY(-20px) translateX(10px);
    }

    66% {
        transform: translateY(10px) translateX(-10px);
    }
}

/* App Shell Grid Layout */
.app-shell {
    display: grid;
    grid-template-columns: var(--drawer-width) 1fr;
    grid-template-rows: 1fr auto;
    /* Removed header row since it's fixed */
    grid-template-areas:
        "drawer main"
        "footer footer";
    /* Footer spans both columns */
    min-height: 100vh;
    min-height: 100dvh;
    /* Use min-height */
    width: 100%;
    position: relative;
    z-index: 1;
    margin-top: 96px;
    /* Mobile: Add space for floating top app bar */
}

@media (min-width: 640px) {
    .app-shell {
        margin-top: 140px;
    }

    body:not(.has-banner) .app-shell {
        margin-top: 100px;
    }
}

@media (min-width: 768px) {
    .app-shell {
        margin-top: 144px;
    }

    body:not(.has-banner) .app-shell {
        margin-top: 104px;
    }
}

/* Top App Bar */
.top-app-bar {
    position: fixed;
    top: 16px;
    left: 12px;
    right: 12px;
    z-index: 1000;
    background: rgba(248, 250, 252, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 3px solid rgba(255, 255, 255, 0.9);
    border-radius: 16px;
    box-shadow: var(--shadow-clay);
    padding: 12px 16px;
    transition: top var(--transition-smooth), left var(--transition-smooth), right var(--transition-smooth);
    will-change: top;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    height: auto;
    min-height: 56px;
    border-bottom: none;
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
    width: auto;
}

@media (min-width: 640px) {
    .top-app-bar {
        top: 60px;
        left: 16px;
        right: 16px;
        padding: 14px 20px;
        padding-left: max(20px, env(safe-area-inset-left));
        padding-right: max(20px, env(safe-area-inset-right));
    }

    .advertisement-banner.hidden~.app-shell~.top-app-bar,
    body:not(.has-banner) .top-app-bar {
        top: 18px;
    }
}

@media (min-width: 768px) {
    .top-app-bar {
        top: 64px;
        left: 20px;
        right: 20px;
        border-radius: 24px;
        padding: 16px 24px;
        padding-left: max(24px, env(safe-area-inset-left));
        padding-right: max(24px, env(safe-area-inset-right));
    }

    .advertisement-banner.hidden~.app-shell~.top-app-bar,
    body:not(.has-banner) .top-app-bar {
        top: 20px;
    }
}

@media (min-width: 1024px) {
    .top-app-bar {
        left: 24px;
        right: 24px;
        padding: 16px 32px;
        padding-left: max(32px, env(safe-area-inset-left));
        padding-right: max(32px, env(safe-area-inset-right));
    }
}

.start-section {
    display: flex;
    align-items: center;
    gap: 16px;
}

.end-section {
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.top-app-bar-actions {
    display: flex;
    align-items: center;
    column-gap: 12px;
}

/* Language Switcher */
.lang-switcher {
    position: relative;
    display: block;
}

@media (min-width: 480px) {
    .lang-switcher {
        display: block;
    }
}

.lang-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
    /* Smaller gap on mobile */
    background: #F8FAFC;
    border: 3px solid rgba(255, 255, 255, 0.9);
    border-radius: 16px;
    /* Mobile: Touch-friendly size (minimum 44px) */
    padding: 10px;
    min-height: 44px;
    min-width: 44px;
    cursor: pointer;
    transition: all 200ms ease-out;
    box-shadow: 6px 6px 12px rgba(30, 41, 59, 0.15), -6px -6px 12px rgba(255, 255, 255, 0.7), inset 0 0 0 1px rgba(255, 255, 255, 0.5);
}

@media (min-width: 640px) {
    .lang-toggle {
        gap: 6px;
        padding: 8px 12px;
    }
}

.lang-toggle:hover,
.lang-toggle:focus {
    transform: translateY(-2px);
    box-shadow: 8px 8px 16px rgba(30, 41, 59, 0.2), -8px -8px 16px rgba(255, 255, 255, 0.8), inset 0 0 0 1px rgba(255, 255, 255, 0.6);
}

.lang-toggle:focus-visible {
    outline: 2px solid #3B82F6;
    outline-offset: 2px;
}

.lang-icon {
    width: 18px;
    /* Smaller on mobile */
    height: 18px;
    color: #3B82F6;
    flex-shrink: 0;
}

@media (min-width: 640px) {
    .lang-icon {
        width: 20px;
        height: 20px;
    }
}

.lang-current {
    font-weight: 600;
    font-size: 0.875rem;
    color: #1E293B;
    /* Hide text on very small screens */
    display: none;
}

@media (min-width: 640px) {
    .lang-current {
        display: inline;
    }
}

.lang-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: #F8FAFC;
    border: 3px solid rgba(255, 255, 255, 0.9);
    border-radius: 16px;
    box-shadow: 8px 8px 16px rgba(30, 41, 59, 0.2), -8px -8px 16px rgba(255, 255, 255, 0.8), inset 0 0 0 1px rgba(255, 255, 255, 0.6);
    min-width: 160px;
    /* Smaller on mobile */
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 200ms ease-out;
    z-index: 100;
}

@media (min-width: 640px) {
    .lang-menu {
        min-width: 180px;
    }
}

.lang-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 10px;
    /* Smaller gap on mobile */
    width: 100%;
    /* Mobile: Touch-friendly padding */
    padding: 14px 16px;
    background: transparent;
    border: none;
    text-align: left;
    cursor: pointer;
    transition: background 150ms ease-out;
    font-family: 'Nunito', sans-serif;
    font-size: 0.875rem;
    /* Smaller on mobile */
    color: #1E293B;
    min-height: 44px;
    /* Touch target */
}

@media (min-width: 640px) {
    .lang-option {
        gap: 12px;
        padding: 12px 16px;
        font-size: 0.9rem;
    }
}

.lang-option:hover,
.lang-option:focus {
    background: #F1F5F9;
}

.lang-option:focus-visible {
    outline: 2px solid #3B82F6;
    outline-offset: -2px;
}

.lang-option.active {
    background: #3B82F6;
    color: white;
}

.lang-flag {
    font-size: 1.1rem;
    /* Slightly smaller on mobile */
    line-height: 1;
}

@media (min-width: 640px) {
    .lang-flag {
        font-size: 1.2rem;
    }
}

.btn-primary {
    background: linear-gradient(135deg, #3B82F6 0%, #60A5FA 100%);
    color: white;
    /* Mobile: Compact padding */
    padding: 8px 16px;
    font-size: 0.875rem;
    border-radius: 16px;
    border: 3px solid #60A5FA;
    box-shadow:
        4px 4px 8px rgba(59, 130, 246, 0.3),
        -2px -2px 4px rgba(255, 255, 255, 0.8);
    white-space: nowrap;
    /* Prevent text wrapping */
}

@media (min-width: 480px) {
    .btn-primary {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

@media (min-width: 640px) {
    .btn-primary {
        padding: 12px 24px;
        font-size: 1rem;
    }
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow:
        6px 6px 12px rgba(59, 130, 246, 0.4),
        -3px -3px 6px rgba(255, 255, 255, 0.9);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: inset 2px 2px 4px rgba(30, 41, 59, 0.2);
}

.btn-secondary {
    background: #F8FAFC;
    color: #1E293B;
    /* Mobile: Compact padding */
    padding: 8px 16px;
    font-size: 0.875rem;
    border-radius: 16px;
    border: 3px solid rgba(255, 255, 255, 0.9);
    box-shadow:
        6px 6px 12px rgba(30, 41, 59, 0.15),
        -6px -6px 12px rgba(255, 255, 255, 0.7),
        inset 0 0 0 1px rgba(255, 255, 255, 0.5);
    white-space: nowrap;
    /* Prevent text wrapping */
    /* Hide on very small screens to prevent overflow */
    display: none;
}

@media (min-width: 480px) {
    .btn-secondary {
        display: inline-block;
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

@media (min-width: 640px) {
    .btn-secondary {
        padding: 12px 24px;
        font-size: 1rem;
    }
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow:
        8px 8px 16px rgba(30, 41, 59, 0.2),
        -8px -8px 16px rgba(255, 255, 255, 0.8),
        inset 0 0 0 1px rgba(255, 255, 255, 0.6);
}

.icon-button {
    background: rgba(255, 255, 255, 0.9);
    border: var(--border-width) solid var(--border-color);
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: var(--shadow-clay-light);
}

/* Increase hit area for randomSeed buttons to 56x56 for better accessibility
   and touch targets. This makes them much easier to click and hover over. */
#randomSeed.icon-button,
#randomSeed.icon-button.suffix,
#randomSeedImg2Img.icon-button,
#randomSeedImg2Img.icon-button.suffix,
#randomSeedVideo.icon-button,
#randomSeedVideo.icon-button.suffix,
#randomSeedVideoImg.icon-button,
#randomSeedVideoImg.icon-button.suffix,
#humanRandomSeed.icon-button,
#humanRandomSeed.icon-button.suffix {
    width: 40px;
    height: 40px;
    padding: 12px;
    border-radius: 50%;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    background-color: rgba(255, 255, 255, 0.9);
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-clay-light);
}

#randomSeed.icon-button:hover,
#randomSeed.icon-button.suffix:hover,
#randomSeedImg2Img.icon-button:hover,
#randomSeedImg2Img.icon-button.suffix:hover,
#randomSeedVideo.icon-button:hover,
#randomSeedVideo.icon-button.suffix:hover,
#randomSeedVideoImg.icon-button:hover,
#randomSeedVideoImg.icon-button.suffix:hover,
#humanRandomSeed.icon-button:hover,
#humanRandomSeed.icon-button.suffix:hover {
    background-color: rgba(255, 255, 255, 1);
    border-color: var(--primary-peach);
    transform: scale(1.1);
    box-shadow: var(--shadow-clay);
}

#randomSeed.icon-button:active,
#randomSeed.icon-button.suffix:active,
#randomSeedImg2Img.icon-button:active,
#randomSeedImg2Img.icon-button.suffix:active,
#randomSeedVideo.icon-button:active,
#randomSeedVideo.icon-button.suffix:active,
#randomSeedVideoImg.icon-button:active,
#randomSeedVideoImg.icon-button.suffix:active,
#humanRandomSeed.icon-button:active,
#humanRandomSeed.icon-button.suffix:active {
    transform: scale(0.95);
}

#randomSeed.icon-button .material-symbols-outlined,
#randomSeedImg2Img.icon-button .material-symbols-outlined,
#randomSeedVideo.icon-button .material-symbols-outlined,
#randomSeedVideoImg.icon-button .material-symbols-outlined,
#humanRandomSeed.icon-button .material-symbols-outlined {
    font-size: 24px;
    color: var(--primary-peach);
    vertical-align: middle;
    align-self: center;
}

#randomSeed.icon-button:hover .material-symbols-outlined,
#randomSeedImg2Img.icon-button:hover .material-symbols-outlined,
#randomSeedVideo.icon-button:hover .material-symbols-outlined,
#randomSeedVideoImg.icon-button:hover .material-symbols-outlined,
#humanRandomSeed.icon-button:hover .material-symbols-outlined {
    color: var(--primary-pink);
}

/* Keep existing styles for other toggle buttons */
#toggleApiKey.icon-button,
#toggleApiKey.icon-button.suffix,
#toggleVoiceAppid.icon-button,
#toggleVoiceAppid.icon-button.suffix,
#toggleVoiceToken.icon-button,
#toggleVoiceToken.icon-button.suffix {
    width: 40px;
    height: 40px;
    padding: 8px;
}

#toggleApiKey.icon-button .material-symbols-outlined,
#toggleVoiceAppid.icon-button .material-symbols-outlined,
#toggleVoiceToken.icon-button .material-symbols-outlined {
    font-size: 20px;
    vertical-align: middle;
    align-self: center;
}

.icon-button:hover {
    background-color: rgba(255, 255, 255, 1);
    color: var(--text-primary);
    border-color: var(--primary-peach);
    box-shadow: var(--shadow-clay);
    transform: translateY(-2px);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 6px;
}

#siteLogo {
    height: 32px;
    width: auto;
    display: block;
    object-fit: contain;
}

.nav-brand-text {
    font-family: 'Noto Sans Rounded', 'Noto Sans', system-ui, -apple-system, Segoe UI, Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    line-height: 1;
    margin-top: -2px;
    letter-spacing: 0.02em;
    background: linear-gradient(180deg, #4B5563 0%, #0F172A 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

@media (min-width: 768px) {
    .logo-container {
        gap: 8px;
    }

    .nav-brand-text {
        font-size: 1.25rem;
    }
}

.nav-brand-text,
.nav-link {
    color: var(--text-primary);
}

/* Navigation Drawer */
.navigation-drawer {
    grid-area: drawer;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-clay);
    padding: 12px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    margin-bottom: 24px;
    margin-top: 24px;
}

/* Resizable Navigation Drawer Handle */
.resize-handle {
    grid-area: drawer;
    width: 8px;
    min-width: 8px;
    cursor: col-resize;
    background: transparent;
    position: relative;
    z-index: 10;
    margin-left: calc(var(--drawer-width) - 8px);
    margin-top: 24px;
    margin-bottom: 24px;
    transition: background-color 150ms ease;
}

.resize-handle:hover {
    background-color: rgba(59, 130, 246, 0.2);
}

.resize-handle::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 4px;
    height: 40px;
    background-color: rgba(148, 163, 184, 0.5);
    border-radius: 2px;
}

.resize-handle:hover::before {
    background-color: rgba(59, 130, 246, 0.7);
}

/* Resizing state */
.app-shell.is-resizing,
.app-shell.is-resizing * {
    cursor: col-resize !important;
    user-select: none !important;
    -webkit-user-select: none !important;
}

.nav-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    /* Allow list to take available space */
}

.nav-section-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 16px 16px 8px 16px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 16px;
    height: 56px;
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    background: rgba(255, 255, 255, 0.8);
    border: var(--border-width) solid transparent;
    box-shadow: var(--shadow-clay-light);
}

.nav-item:hover {
    background-color: rgba(255, 255, 1);
    color: var(--text-primary);
    border-color: var(--border-color);
    box-shadow: var(--shadow-clay);
    transform: translateY(-2px);
}

/* ========================================
   Toggle Switch 開關樣式
   ======================================== */
.toggle-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 200ms ease;
    user-select: none;
    -webkit-user-select: none;
    width: 100%;
    box-sizing: border-box;
}

.toggle-option:hover {
    background-color: rgba(0, 0, 0, 0.03);
}

.toggle-option:active {
    background-color: rgba(0, 0, 0, 0.06);
}

.toggle-label-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.toggle-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.3;
}

.toggle-description,
.toggle-desc {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.4;
}

.toggle-switch {
    position: relative;
    width: 56px;
    height: 32px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.toggle-switch input {
    display: none;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background-color: #cbd5e1;
    border-radius: 28px;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: background-color 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

.toggle-slider:after {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 3px;
    top: 50%;
    transform: translateY(-50%);
    background-color: white;
    transition: left 300ms cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-switch input:checked+.toggle-slider {
    background: var(--gradient-primary);
}

.toggle-switch input:checked+.toggle-slider:after {
    left: calc(100% - 29px);
}

.toggle-slider:hover {
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
}

.toggle-switch input:checked+.toggle-slider:hover {
    box-shadow: inset 0 2px 4px rgba(59, 130, 246, 0.3);
}

.toggle-switch input:disabled+.toggle-slider {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Focus state for keyboard accessibility */
.toggle-switch input:focus-visible+.toggle-slider {
    outline: 2px solid var(--primary-color, #3b82f6);
    outline-offset: 2px;
}

/* Label styling for better touch targets */
label.toggle-option {
    border: none;
    padding: 14px;
    margin: 0 -14px;
}

.nav-item.active {
    background: var(--gradient-primary);
    color: var(--white);
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-clay);
}

.nav-item .material-symbols-outlined {
    font-size: 24px;
    vertical-align: middle;
    align-self: center;
}

.divider {
    height: 1px;
    background-color: var(--slate-800);
    margin: 8px 0;
}

/* Free Trial Banner */
.free-trial-banner {
    background: linear-gradient(135deg, #F97316 0%, #FB923C 100%);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 16px;
    margin-top: auto;
    margin-bottom: 8px;
    text-align: center;
    box-shadow: var(--shadow-clay);
}

.free-trial-banner.hidden {
    display: none;
}

.trial-text {
    color: white;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 12px;
    line-height: 1.4;
}

.trial-button {
    display: inline-block;
    background: white;
    color: #F97316;
    padding: 8px 16px;
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    white-space: nowrap;
    border: var(--border-width) solid white;
    box-shadow: var(--shadow-clay-light);
}

.trial-button:hover {
    background: rgba(255, 255, 255, 1);
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-clay);
}

@media (max-width: 768px) {
    .free-trial-banner {
        padding: 12px;
        margin-bottom: 4px;
    }

    .trial-text {
        font-size: 13px;
        margin-bottom: 10px;
    }

    .trial-button {
        padding: 6px 14px;
        font-size: 13px;
    }
}

/* Main Content */
.main-content {
    grid-area: main;
    background-color: transparent;
    /* overflow-y: auto; REMOVE independent scroll */
    padding: 0;
    display: flex;
    flex-direction: column;
}

.content-container {
    width: 100%;
    margin: 0;
    padding: 24px;
    flex: 1;
    /* Was flex:1 */
    /* overflow: hidden; REMOVE this so content can expand */
    max-width: none;
    /* Ensure it takes at least full height minus footer if needed, or just auto */
    height: auto;
}

/* Two-Column Grid Layout */
.content-grid {
    display: grid;
    grid-template-columns: var(--input-panel-width) 8px 1fr 8px var(--template-panel-width);
    gap: 0;
    height: calc(100dvh - var(--header-height));
    position: relative;
    overflow: hidden;
}

/* Panel Resize Handle (between input-panel and preview-panel) */
.panel-resize-handle {
    width: 8px;
    min-width: 8px;
    cursor: col-resize;
    background: transparent;
    position: relative;
    z-index: 10;
    align-self: stretch;
    transition: background-color 150ms ease;
}

.panel-resize-handle:hover {
    background-color: rgba(59, 130, 246, 0.2);
}

.panel-resize-handle::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 4px;
    height: 40px;
    background-color: rgba(148, 163, 184, 0.5);
    border-radius: 2px;
}

.panel-resize-handle:hover::before {
    background-color: rgba(59, 130, 246, 0.7);
}

/* Input Panel gap compensation for the resize handle column */
.content-grid>.input-panel {
    margin-right: 8px;
}

.content-grid>.preview-panel {
    margin-left: 8px;
}

/* Panel resizing state */
body.is-panel-resizing,
body.is-panel-resizing * {
    cursor: col-resize !important;
    user-select: none !important;
    -webkit-user-select: none !important;
}

/* Input Panel */
.input-panel {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-clay);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow-y: auto;
}

.input-panel-header {
    padding: 24px 24px 20px 24px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.input-panel-header h1 {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 500;
    color: var(--text-primary);
    margin: 0 0 8px 0;
}

.input-panel-header .subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
}

.input-panel-body {
    padding: 24px;
    flex: 1;
}

/* Preview Panel */
.preview-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-height: 0;
    height: 100%;
    min-width: 0;
    overflow-y: auto;
    /* Prevent layout overflow */
}

/* Prompt Template Panel (Right Side Sidebar) */
.prompt-template-panel {
    background: var(--surface-clay);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    padding: 0; /* Remove padding to handle scroll area separately */
    height: 100%;
    overflow: hidden; /* Panel itself doesn't scroll */
    display: flex;
    flex-direction: column;
    border-left: 1px solid rgba(255, 255, 255, 0.3);
    min-width: 0;
}

.prompt-template-scroll-area {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    -webkit-overflow-scrolling: touch;
    padding-bottom: calc(16px + env(safe-area-inset-bottom));
}

.prompt-template-head {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 20px 16px 16px 16px;
    background: rgba(255, 255, 255, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
}

.prompt-template-head h2 {
    margin: 0;
    font-size: 1.5rem;
    line-height: 1.2;
    color: var(--text-primary);
    font-weight: 800;
    letter-spacing: -0.02em;
}

.prompt-template-filter {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
}

.filter-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    padding-left: 2px;
}

.filter-select-wrapper {
    position: relative;
    width: 100%;
}

.filter-select {
    width: 100%;
    background: rgba(255, 255, 255, 0.8);
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 12px;
    padding: 10px 14px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    appearance: none;
    cursor: pointer;
    transition: all 200ms ease;
    box-shadow: var(--shadow-clay-light);
}

.filter-select:hover {
    border-color: var(--primary-blue);
    background: var(--white);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 4px rgba(173, 216, 230, 0.2);
}

.select-icon {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--text-secondary);
    font-size: 20px;
}

.prompt-template-grid {
    display: none;
    /* RWD: Use a smaller min-width to prevent overflow in narrow sidebars */
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
}

.prompt-template-grid.active {
    display: grid;
}

.prompt-template-card {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    background: var(--surface-clay);
    aspect-ratio: 1 / 1.25;
    cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

.prompt-template-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
}

.template-visual {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 500ms ease;
}

.prompt-template-card:hover .template-visual {
    transform: scale(1.05);
}

.template-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0) 40%, rgba(0,0,0,0.6) 100%);
    opacity: 0;
    transition: opacity 300ms ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 12px;
    z-index: 3;
}

.prompt-template-card:hover .template-overlay {
    opacity: 1;
}

.template-main-action {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -30%);
    opacity: 0;
    transition: all 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
    pointer-events: none;
}

.prompt-template-card:hover .template-main-action {
    opacity: 1;
    transform: translate(-50%, -50%);
    pointer-events: auto;
}

.btn-one-click {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: #18181b;
    border: none;
    padding: 10px 18px;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    cursor: pointer;
    transition: all 200ms ease;
}

.btn-one-click:hover {
    background: white;
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}

.template-info {
    color: white;
}

.template-creator {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 6px;
}

.creator-avatar {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, #6366f1, #a855f7);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.creator-name {
    font-size: 12px;
    font-weight: 600;
    opacity: 0.9;
}

.preview-main {
    flex: 1;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-clay);
    padding: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 600px;
    position: relative;
}

.preview-container {
    width: 100%;
    max-width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
    padding-bottom: 0;
}

.preview-stage {
    width: 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Loading Overlay */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10;
    border-radius: var(--radius-xl);
}

.preview-media {
    width: auto;
    max-width: 100%;
    height: auto;
    /* Adjust max height to account for the new padding-bottom */
    max-height: calc(100vh - var(--header-height) - 280px - 80px);
    object-fit: contain;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.4);
    display: block;
    margin: 0 auto;

    /* iOS Safari long-press support */
    -webkit-touch-callout: default;
    -webkit-user-select: text;
    pointer-events: auto;
    touch-action: manipulation;
}

/* 3D Model Viewer - same sizing behavior as preview-media */
.model-viewer-container {
    width: 100%;
    max-width: 100%;
    min-height: clamp(280px, 42vh, 520px);
    max-height: min(74dvh, calc(var(--app-dvh, 100vh) - var(--header-height) - 220px));
    height: min(74dvh, calc(var(--app-dvh, 100vh) - var(--header-height) - 220px));
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.4);
    display: block;
    margin: 0 auto;
    background:
        radial-gradient(ellipse at top center, rgba(255, 255, 255, 0.72), transparent 48%),
        linear-gradient(160deg, #f7f9fc 0%, #e8edf5 100%);
    overflow: hidden;
}

@media (max-width: 768px) {
    .preview-media {
        max-height: 50vh;
        /* Reduce max-height on mobile to prevent overlapping with action-section */
    }

    .model-viewer-container {
        min-height: clamp(240px, 38svh, 420px);
        max-height: min(60svh, calc(var(--app-dvh, 100vh) - var(--header-height) - 190px));
        height: min(60svh, calc(var(--app-dvh, 100vh) - var(--header-height) - 190px));
    }
}

.three-d-viewer-shell {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Advanced Rendering Controls */
.three-d-advanced-controls {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 12px;
    border: 1px solid rgba(148, 163, 184, 0.35);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.three-d-controls-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
}

.three-d-control-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.three-d-control-label {
    font-size: 12px;
    font-weight: 600;
    color: #334155;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.three-d-control-select,
.three-d-control-slider {
    padding: 8px 10px;
    border: 1px solid rgba(148, 163, 184, 0.45);
    border-radius: 8px;
    background: #fff;
    color: #0f172a;
    font-size: 12px;
    font-family: inherit;
    transition: all 0.2s ease;
}

.three-d-control-select:hover,
.three-d-control-slider:hover {
    border-color: rgba(37, 99, 235, 0.65);
}

.three-d-control-select:focus,
.three-d-control-slider:focus {
    outline: none;
    border-color: #1d4ed8;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.three-d-control-slider {
    padding: 0;
    height: 6px;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
}

.three-d-control-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #1d4ed8;
    cursor: pointer;
    border: 2px solid #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.three-d-control-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #1d4ed8;
    cursor: pointer;
    border: 2px solid #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.three-d-control-value {
    font-size: 11px;
    color: #64748b;
    font-weight: 600;
}

.three-d-mode-buttons,
.three-d-color-toggles {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.three-d-mode-btn,
.three-d-toggle-btn {
    flex: 1;
    min-width: 70px;
    padding: 8px 10px;
    border: 1px solid rgba(148, 163, 184, 0.45);
    border-radius: 8px;
    background: #fff;
    color: #0f172a;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.three-d-mode-btn:hover,
.three-d-toggle-btn:hover {
    border-color: rgba(37, 99, 235, 0.65);
    box-shadow: 0 2px 6px rgba(30, 64, 175, 0.1);
}

.three-d-mode-btn.is-active,
.three-d-toggle-btn.is-active {
    background: #1d4ed8;
    color: #fff;
    border-color: #1d4ed8;
}

.three-d-viewer-toolbar {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid rgba(148, 163, 184, 0.35);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.three-d-toolbar-group {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.three-d-tool-btn,
.three-d-preset-btn {
    border: 1px solid rgba(148, 163, 184, 0.45);
    background: #fff;
    color: #0f172a;
    border-radius: 10px;
    padding: 8px 10px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    line-height: 1;
    transition: all 0.2s ease;
}

.three-d-tool-btn .material-symbols-outlined {
    font-size: 18px;
}

.three-d-tool-btn:hover,
.three-d-preset-btn:hover {
    border-color: rgba(37, 99, 235, 0.65);
    box-shadow: 0 4px 10px rgba(30, 64, 175, 0.12);
}

.three-d-tool-btn.is-active,
.three-d-preset-btn.is-active {
    background: #1d4ed8;
    color: #fff;
    border-color: #1d4ed8;
}

.three-d-viewport {
    position: relative;
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(148, 163, 184, 0.35);
    background: #eef2f8;
}

.three-d-grid-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    opacity: 0.75;
    background-image:
        linear-gradient(to right, rgba(51, 65, 85, 0.15) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(51, 65, 85, 0.15) 1px, transparent 1px),
        linear-gradient(to right, rgba(30, 64, 175, 0.3) 2px, transparent 2px),
        linear-gradient(to bottom, rgba(30, 64, 175, 0.3) 2px, transparent 2px);
    background-size: 20px 20px, 20px 20px, 100px 100px, 100px 100px;
    background-position: center center;
}

.three-d-axes-badge {
    position: absolute;
    right: 10px;
    top: 10px;
    z-index: 2;
    display: inline-flex;
    padding: 6px;
    border-radius: 14px;
    border: 1px solid rgba(100, 116, 139, 0.35);
    background: rgba(255, 255, 255, 0.84);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.three-d-axis-gizmo {
    width: 72px;
    height: 72px;
    display: block;
}

.axis-text {
    font-size: 14px;
    font-weight: 800;
    font-family: "SF Pro Text", "Segoe UI", sans-serif;
}

.axis-text-x {
    fill: #b91c1c;
}

.axis-text-y {
    fill: #15803d;
}

.axis-text-z {
    fill: #1d4ed8;
}

.three-d-print-ops {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 8px 0 2px;
}

.three-d-print-unit {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.three-d-viewer-meta {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px 2px 0;
    color: #334155;
}

.three-d-meta-item {
    min-width: 0;
    display: flex;
    align-items: baseline;
    gap: 6px;
}

.three-d-meta-label {
    font-size: 12px;
    color: #64748b;
}

.three-d-meta-value {
    font-size: 12px;
    font-weight: 700;
    color: #0f172a;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 45vw;
}

@media (max-width: 991px) {
    .three-d-viewer-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .three-d-toolbar-group {
        justify-content: center;
    }

    .three-d-tool-btn,
    .three-d-preset-btn {
        flex: 1;
        justify-content: center;
        min-height: 42px;
    }

    .three-d-viewer-meta {
        gap: 8px;
    }

    .three-d-meta-value {
        max-width: 90vw;
    }

    .three-d-advanced-controls {
        padding: 10px;
    }

    .three-d-controls-row {
        grid-template-columns: 1fr;
    }

    .three-d-control-group {
        width: 100%;
    }

    .three-d-print-ops {
        flex-direction: column;
        align-items: stretch;
    }

    .three-d-print-unit {
        justify-content: space-between;
    }

    .three-d-mode-buttons,
    .three-d-color-toggles {
        width: 100%;
    }

    .three-d-mode-btn,
    .three-d-toggle-btn {
        min-width: 60px;
        padding: 6px 8px;
        font-size: 11px;
    }
}

.preview-caption {
    margin-top: 16px;
    text-align: center;
    color: var(--slate-300);
    font-size: 14px;
    line-height: 1.5;
}

.seed-info-badge {
    display: inline-block;
    margin-top: 8px;
    padding: 3px 10px;
    border-radius: 12px;
    background: rgba(100, 116, 139, 0.25);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(100, 116, 139, 0.3);
    color: var(--slate-300);
    font-size: 12px;
    font-family: 'Roboto Mono', monospace;
    letter-spacing: 0.3px;
    text-align: center;
    user-select: all;
    cursor: default;
}

.preview-gallery {
    height: 140px;
    background: rgba(30, 41, 59, 0.3);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--slate-800);
    border-radius: var(--radius-lg);
    padding: 16px;
    overflow-x: auto;
    overflow-y: hidden;
}

.thumbnail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
    height: 100%;
}

.thumbnail-item {
    aspect-ratio: 16/9;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: all 0.2s;
    border: 2px solid transparent;
    background: var(--slate-800);
    position: relative;
}

.thumbnail-item img,
.thumbnail-item video {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.thumbnail-item:hover {
    border-color: var(--primary-violet);
    transform: scale(1.05);
}

.thumbnail-item.active {
    border-color: var(--primary-fuchsia);
    box-shadow: 0 0 0 2px rgba(217, 70, 239, 0.2);
}

/* Legacy content header for compatibility */
.content-header {
    margin-bottom: 24px;
}

.content-header h1 {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 400;
    color: var(--white);
    margin: 0;
}

/* Compact Form Controls */
.form-group-compact {
    margin-bottom: 20px;
}

.settings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

.settings-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.md-text-field.compact {
    height: 48px;
}

.md-select-field.compact {
    height: 48px;
}

.action-section {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid rgba(148, 163, 184, 0.1);
}

.action-section .btn-filled {
    width: 100%;
    height: 48px;
    font-size: 16px;
}

/* Cards */
.card {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-clay);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    margin-bottom: 1.5rem;
}

.card:hover {
    border-color: var(--primary-peach);
    box-shadow: var(--shadow-clay-hover);
    transform: translateY(-4px);
}

.card-header {
    background-color: transparent;
    border-bottom: var(--border-width) solid rgba(255, 255, 255, 0.8);
    padding: 20px 24px;
}

.card-header h5 {
    font-family: var(--font-heading);
    font-size: 20px;
    color: var(--text-primary);
    margin: 0;
    font-weight: 500;
}

.card-body {
    padding: 32px 24px;
}

/* Improved spacing for form sections */
.card-body .row {
    margin-bottom: 0;
}

.card-body .mb-4 {
    margin-bottom: 1.5rem !important;
}

/* Improved spacing for form sections */
.card-body .row {
    margin-bottom: 0;
}

.card-body .mb-4 {
    margin-bottom: 1.5rem !important;
}

/* Result Card Specific Styling */
.card.h-100 {
    min-height: 400px;
}

.card .card-body[style*="min-height"] {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.3) 0%, rgba(15, 23, 42, 0.4) 100%);
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

/* Empty State Styling */
#emptyState {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1rem;
}

#emptyState .material-symbols-outlined {
    color: var(--slate-600);
    margin-bottom: 1rem;
}

#emptyState p {
    color: var(--slate-400);
    font-size: 14px;
}

/* Show number input spin buttons for better UX */
.md-text-field input[type="number"]::-webkit-outer-spin-button,
.md-text-field input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: auto;
    margin: 0;
}

.md-text-field input[type="number"] {
    -moz-appearance: number-input;
    padding-right: 50px;
    /* Make room for the random seed button */
}

/* Material Text Fields (Floating Label) - Claymorphism Theme */
.md-text-field {
    position: relative;
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    height: 56px;
    display: flex;
    align-items: center;
    padding: 0 16px;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    background-color: rgba(255, 255, 255, 0.9);
    box-shadow: var(--shadow-clay-light);
}

.md-text-field:focus-within {
    border-color: var(--primary-peach);
    border-width: 3px;
    padding: 0 15px;
    box-shadow: var(--shadow-clay);
    transform: translateY(-2px);
}

.md-text-field input,
.md-text-field textarea {
    border: none;
    background: transparent;
    width: 100%;
    height: 100%;
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--text-primary);
    outline: none;
    padding-top: 28px;
    padding-bottom: 8px;
    margin: 0;
    z-index: 1;
}

.md-text-field input::placeholder,
.md-text-field textarea::placeholder {
    color: var(--text-muted);
}

.md-text-field label {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.9);
    padding: 0 4px;
    color: var(--text-secondary);
    font-size: 16px;
    transition: all 0.2s ease-out;
    pointer-events: none;
    z-index: 0;
}

/* Floating Label Logic */
.md-text-field input:focus+label,
.md-text-field input:not(:placeholder-shown)+label,
.md-text-field textarea:focus+label,
.md-text-field textarea:not(:placeholder-shown)+label {
    top: 8px;
    left: 16px;
    font-size: 12px;
    color: var(--primary-peach);
    font-weight: 500;
    z-index: 2;
}

.md-text-field input:not(:focus):not(:placeholder-shown)+label,
.md-text-field textarea:not(:focus):not(:placeholder-shown)+label {
    color: var(--text-secondary);
}

/* Textarea specific adjustments - Enhanced for SaaS UX */
.md-text-field.textarea {
    height: auto;
    align-items: flex-start;
    padding-top: 0;
    padding-bottom: 0;
}

.md-text-field.textarea label {
    top: 28px;
}

.md-text-field.textarea textarea {
    min-height: 140px;
    max-height: 360px;
    resize: vertical;
    line-height: 1.6;
    padding-top: 32px;
    padding-bottom: 12px;
    overflow-y: auto;
    /* Custom scrollbar for professional look */
    scrollbar-width: thin;
    scrollbar-color: rgba(148, 163, 184, 0.5) transparent;
}

/* Webkit custom scrollbar */
.md-text-field.textarea textarea::-webkit-scrollbar {
    width: 6px;
}

.md-text-field.textarea textarea::-webkit-scrollbar-track {
    background: transparent;
    margin-top: 36px;
    margin-bottom: 12px;
}

.md-text-field.textarea textarea::-webkit-scrollbar-thumb {
    background-color: rgba(148, 163, 184, 0.4);
    border-radius: 3px;
    transition: background-color 0.2s ease;
}

.md-text-field.textarea textarea::-webkit-scrollbar-thumb:hover {
    background-color: rgba(148, 163, 184, 0.7);
}

/* Hover/focus states for resize indicator */
.md-text-field.textarea:hover textarea {
    scrollbar-color: rgba(148, 163, 184, 0.6) transparent;
}

.md-text-field.textarea:focus-within textarea {
    scrollbar-color: rgba(99, 102, 241, 0.5) transparent;
}

.md-text-field.textarea input:focus+label,
.md-text-field.textarea textarea:focus+label {
    top: 8px;
}

/* Select Field */
.md-select-field {
    position: relative;
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    height: 56px;
    background-color: rgba(255, 255, 255, 0.9);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: var(--shadow-clay-light);
}

.md-select-field:focus-within {
    border-color: var(--primary-peach);
    border-width: 3px;
    box-shadow: var(--shadow-clay);
    transform: translateY(-2px);
}

.md-select-field .form-select {
    border: none;
    height: 100%;
    padding: 14px 44px 10px 16px;
    font-size: 16px;
    line-height: 1.5;
    background-color: transparent;
    box-shadow: none;
    color: var(--text-primary);
}

/* 如果 select 没有 floating label，调整 padding */
.md-select-field:has(.floating-label) .form-select {
    padding: 16px 44px 0 16px;
}

.md-select-field .form-select option {
    background-color: rgba(255, 255, 255, 0.95);
    color: var(--text-primary);
}

.md-select-field .floating-label {
    position: absolute;
    top: 8px;
    left: 16px;
    font-size: 12px;
    color: var(--text-secondary);
    pointer-events: none;
}

/* Helper Text */
.helper-text {
    font-size: 12px;
    color: var(--slate-400);
    margin-top: 4px;
    margin-left: 16px;
}

/* Buttons */
.btn {
    height: 48px;
    border-radius: var(--radius-lg);
    padding: 0 24px;
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.1px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    border: var(--border-width) solid var(--border-color);
    cursor: pointer;
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    box-shadow: var(--shadow-clay-light);
}

.btn svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    align-self: center;
}

.btn .material-symbols-outlined {
    font-size: 20px;
    line-height: 1;
    align-self: center;
    vertical-align: middle;
}

.btn-filled {
    background: var(--gradient-primary);
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.8);
}

.btn-filled:hover {
    box-shadow: var(--shadow-clay-hover);
    transform: translateY(-2px) scale(1.02);
}

.btn-filled:active {
    transform: translateY(0) scale(0.98);
}

.btn-outlined {
    background-color: rgba(255, 255, 255, 0.9);
    border: var(--border-width) solid var(--border-color);
    color: var(--text-primary);
    box-shadow: var(--shadow-clay-light);
}

.btn-outlined:hover {
    background-color: rgba(253, 188, 180, 0.1);
    border-color: var(--primary-peach);
    box-shadow: var(--shadow-clay);
    transform: translateY(-2px);
}

.btn-text {
    background-color: transparent;
    color: var(--text-secondary);
    padding: 0 12px;
    transition: all 0.3s ease;
    border: none;
    box-shadow: none;
}

.btn-text:hover {
    background-color: rgba(255, 255, 255, 0.8);
    color: var(--text-primary);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-clay-light);
}

/* Details Toggle Button */
.details-toggle-btn {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius-lg);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    border: var(--border-width) solid transparent;
}

.details-toggle-btn:hover {
    color: var(--text-primary);
    background-color: rgba(253, 188, 180, 0.1);
    border-color: var(--primary-peach);
    transform: translateY(-2px);
    box-shadow: var(--shadow-clay-light);
}

.details-toggle-btn:active {
    transform: translateY(0);
    background-color: rgba(253, 188, 180, 0.2);
}

.details-toggle-btn .material-symbols-outlined {
    font-size: 18px;
    transition: transform 0.3s ease;
    vertical-align: middle;
    align-self: center;
}

.btn-text.text-danger {
    color: var(--error);
}

.btn-text.text-danger:hover {
    background-color: rgba(239, 68, 68, 0.1);
}

/* Download Button */
.btn-download {
    width: 100%;
    min-height: 56px;
    /* Increased for mobile touch */
    height: auto;
    padding: 14px 20px;
    /* Increased padding */
    background: var(--slate-800);
    z-index: 10;
    /* Increased z-index */
    position: relative;
    color: #fff;
    /* White text for better contrast */
    border: 2px solid var(--slate-600);
    /* Thicker border */
    border-radius: var(--radius-xl);
    /* More rounded */
    font-size: 17px;
    /* Slightly larger text */
    font-weight: 600;
    gap: 10px;
    transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.btn-download:hover {
    background: var(--slate-700);
    border-color: var(--primary-violet);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

.btn-download:active {
    transform: scale(0.96);
    /* Scale feedback for touch */
    background: var(--primary-violet);
}

.btn-download .material-symbols-outlined {
    font-size: 24px;
    /* Larger icon */
    color: #fff;
    vertical-align: middle;
}

/* Specific override for the download image button to ensure correct color */
button#downloadImage.btn.btn-download.mt-3,
button#downloadImage.btn.btn-download.mt-3 .material-symbols-outlined,
button#downloadVideo.btn.btn-download.mt-3,
button#downloadVideo.btn.btn-download.mt-3 .material-symbols-outlined {
    color: #fff;
}

/* Details Toggle */
.details-toggle-icon {
    transition: transform 0.3s ease;
}

.details-toggle-btn[aria-expanded="true"] .details-toggle-icon {
    transform: rotate(180deg);
}

/* --- Credential Save Buttons Color Fix ---
   統一 `saveOmniCred`, `saveVoiceCred`, `saveApiKey` 的文字顏色為 #94A3B8
   保持深色主題可讀性，同時區分為次要操作按鈕顏色。 */
#saveApiKey,
#saveVoiceCred,
#saveOmniCred {
    color: #94A3B8;
}

/* --- Toggle (visibility) button: increase clickable area and give faster visual feedback ---
   - 擴大 suffix 按鈕的 padding，使點擊區域更大
   - 縮短 transform 時間以減少感知延遲
   - hover/active 效果增強可視反饋
*/
.md-text-field .icon-button.suffix {
    padding: 8px 12px;
    margin-left: 8px;
    transition: transform 0.08s ease, background-color 0.12s ease;
    border-radius: 8px;
}

.md-text-field .icon-button.suffix:hover {
    background-color: rgba(255, 255, 255, 0.06);
    transform: translateY(-1px);
}

.md-text-field .icon-button.suffix:active,
.md-text-field .icon-button.suffix.active {
    transform: translateY(0);
}

/* Range Slider */
.form-range {
    height: 6px;
    background-color: rgba(200, 200, 200, 0.3);
    border-radius: 3px;
    appearance: none;
    -webkit-appearance: none;
    border: var(--border-width) solid var(--border-color);
}

.form-range::-webkit-slider-runnable-track {
    height: 6px;
    background: rgba(200, 200, 200, 0.3);
    border-radius: 3px;
}

.form-range::-webkit-slider-thumb {
    appearance: none;
    -webkit-appearance: none;
    background: var(--primary-peach);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: var(--shadow-clay);
    margin-top: -9px;
    border: var(--border-width) solid var(--border-color);
}

.form-range::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: var(--shadow-clay-hover);
}

.form-range::-moz-range-thumb {
    background: var(--primary-peach);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: var(--shadow-clay);
    border: var(--border-width) solid var(--border-color);
}

.form-range::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: var(--shadow-clay-hover);
}

.range-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: block;
}

/* Bootstrap Form Controls - Claymorphism Theme */
.form-control {
    background-color: rgba(255, 255, 255, 0.9);
    border: var(--border-width) solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-lg);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: var(--shadow-clay-light);
}

.form-control:focus {
    background-color: rgba(255, 255, 255, 1);
    border-color: var(--primary-peach);
    box-shadow: var(--shadow-clay);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-text {
    color: var(--text-secondary);
    font-size: 12px;
}

.form-label {
    color: var(--text-secondary);
    font-weight: 500;
}

/* File Upload Styles */
.file-upload-container {
    border: 2px dashed #d1d5db;
    border-radius: var(--radius-xl);
    padding: 32px;
    text-align: center;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(248, 250, 252, 0.9));
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: var(--shadow-clay-light);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.file-upload-container::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(253, 188, 180, 0.1), transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.file-upload-container:hover {
    border-color: var(--primary-peach);
    border-width: 2px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 1), rgba(253, 188, 180, 0.05));
    box-shadow:
        0 8px 24px rgba(253, 188, 180, 0.15),
        var(--shadow-clay);
    transform: translateY(-2px);
}

.file-upload-container:hover::before {
    opacity: 1;
}

.file-upload-container.drag-over {
    border-color: var(--primary-peach);
    border-width: 2px;
    background: linear-gradient(135deg, rgba(253, 188, 180, 0.1), rgba(255, 255, 255, 1));
    box-shadow:
        0 12px 32px rgba(253, 188, 180, 0.25),
        var(--shadow-clay-hover);
    transform: translateY(-4px) scale(1.01);
}

.file-upload-container .file-upload-content.d-none {
    display: none !important;
}

.file-upload-container input[type="file"] {
    display: none;
}

.file-upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    position: relative;
    z-index: 1;
}

.file-upload-icon {
    font-size: 56px;
    color: var(--text-muted);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.file-upload-container:hover .file-upload-icon {
    color: var(--primary-peach);
    transform: scale(1.1) translateY(-4px);
}

.file-upload-text {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 600;
    line-height: 1.4;
}

.file-upload-hint {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.4;
}

.file-upload-selected {
    font-size: 14px;
    color: var(--primary-blue);
    font-weight: 600;
    margin-top: 8px;
    padding: 8px 12px;
    background: rgba(173, 216, 230, 0.1);
    border-radius: var(--radius-md);
    display: inline-block;
}

/* Image Preview Styles - Unified layout inside file-upload-container */
.image-preview-container {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    padding: 20px;
    background-color: transparent;
    border-radius: var(--radius-lg);
    border: none;
    box-shadow: none;
    width: 100%;
    box-sizing: border-box;
    justify-content: flex-start;
    align-items: flex-start;
}

/* Hide image-preview-container when no images are present */
.image-preview-container:not(:has(.image-preview-wrapper)) {
    display: none;
    padding: 0;
}

.image-preview-wrapper {
    position: relative;
    width: 240px;
    height: 240px;
    max-width: 240px;
    max-height: 240px;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: var(--border-width) solid var(--border-color);
    background-color: rgba(255, 255, 255, 1);
    box-shadow: var(--shadow-clay-light);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(248, 250, 252, 0.95));
}

.image-preview-wrapper:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow:
        0 12px 24px rgba(0, 0, 0, 0.15),
        8px 8px 16px rgba(30, 41, 59, 0.2),
        -8px -8px 16px rgba(255, 255, 255, 0.8);
    border-color: var(--primary-peach);
}

.image-preview-wrapper:active {
    transform: translateY(-2px) scale(0.98);
}

.image-preview {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    padding: 8px;
}

.image-preview-remove {
    position: absolute;
    top: -12px !important;
    right: -12px !important;
    width: 52px !important;
    height: 52px !important;
    background-color: #ef4444 !important;
    border: 4px solid white !important;
    border-radius: 50% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    cursor: pointer !important;
    z-index: 100 !important;
    opacity: 1 !important;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(0, 0, 0, 0.1) !important;
    transition: all 0.2s ease !important;
    top: 8px;
    right: 8px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: rgba(255, 107, 107, 0.95);
    border: 2px solid white;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
    box-shadow: 0 4px 12px rgba(255, 107, 107, 0.4);
    opacity: 0;
}

.image-preview-wrapper:hover .image-preview-remove {
    opacity: 1;
    transform: scale(1.1);
}

.image-preview-remove:hover {
    background-color: var(--error);
    transform: scale(1.15);
    box-shadow: 0 6px 16px rgba(255, 107, 107, 0.6);
}

.image-preview-remove:active {
    transform: scale(0.9);
}

.image-preview-remove .material-symbols-outlined {
    font-size: 32px !important;
    font-weight: 700 !important;
    color: white !important;
    vertical-align: middle;
    font-weight: 700;
}

.image-preview-name {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 8px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: white;
    font-size: 12px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: center;
    font-weight: 500;
    transition: background 0.3s ease;
}

.image-preview-wrapper:hover .image-preview-name {
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0.4));
}

/* Responsive Styles for Image Preview */
@media (max-width: 1024px) {
    .image-preview-wrapper {
        width: 200px;
        height: 200px;
        max-width: 200px;
        max-height: 200px;
    }

    .image-preview-container {
        padding: 16px;
        gap: 12px;
    }

    .image-preview-name {
        font-size: 11px;
        padding: 6px;
    }
}

@media (max-width: 768px) {
    .image-preview-container {
        padding: 16px;
        gap: 12px;
        justify-content: center;
    }

    .image-preview-wrapper {
        width: 180px;
        height: 180px;
        max-width: 180px;
        max-height: 180px;
    }

    .image-preview-name {
        font-size: 10px;
        padding: 4px;
    }

    .image-preview-remove {
        width: 28px;
        height: 28px;
        top: 6px;
        right: 6px;
    }

    .image-preview-remove .material-symbols-outlined {
        font-size: 16px;
    }

    .file-upload-container,
    .multipleImageUploadContainer,
    .video-upload-container,
    .audio-upload-container {
        border: 2px dashed #d1d5db;
        border-radius: var(--radius-xl);
        padding: 32px;
        text-align: center;
        background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(248, 250, 252, 0.9));
        transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
        box-shadow: var(--shadow-clay-light);
        cursor: pointer;
        position: relative;
        overflow: hidden;
        min-height: 120px;
    }

    .file-upload-hint {
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .image-preview-container {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        padding: 8px;
    }

    .image-preview-wrapper {
        width: 100%;
        min-height: 120px;
        max-width: 100%;
        max-height: none;
        border-radius: 16px;
        overflow: hidden;
    }

    .image-preview-remove {
        width: 44px;
        height: 44px;
        top: 4px;
        right: 4px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(255, 59, 48, 0.9);
        opacity: 1;
        transform: scale(0.8);
        border: 2px solid white;
    }

    .image-preview-remove .material-symbols-outlined {
        font-size: 24px;
        color: white;
    }

    .image-preview {
        width: 100%;
        height: 120px;
        object-fit: cover;
        border-radius: 12px;
    }

    .image-preview-remove {
        width: 24px;
        height: 24px;
        top: 4px;
        right: 4px;
        border-width: 1px;
    }

    .image-preview-remove .material-symbols-outlined {
        font-size: 14px;
    }

    .image-preview-name {
        font-size: 9px;
        padding: 3px;
    }

    .file-upload-container {
        padding: 20px;
    }

    .file-upload-icon {
        font-size: 40px;
    }

    .file-upload-text {
        font-size: 13px;
    }

    .file-upload-hint {
        font-size: 11px;
    }
}

/* Button Groups */
.btn-group .btn-check:checked+.btn-outline-secondary {
    background: var(--gradient-primary);
    border-color: var(--primary-violet);
    color: var(--white);
}

.btn-outline-secondary {
    border-color: var(--slate-700);
    color: var(--slate-300);
    background-color: transparent;
}

.btn-outline-secondary:hover {
    background-color: rgba(139, 92, 246, 0.1);
    border-color: var(--primary-violet);
    color: var(--white);
}

/* Alerts */
.alert-danger {
    background-color: rgba(255, 107, 107, 0.1);
    border: var(--border-width) solid rgba(255, 107, 107, 0.5);
    color: #FF6B6B;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-clay-light);
}

/* Utilities */
.d-none {
    display: none !important;
}

.text-secondary {
    color: var(--slate-400) !important;
}

.text-danger {
    color: var(--error) !important;
}

.bg-light {
    background-color: rgba(30, 41, 59, 0.3) !important;
}

/* Spinner */
.spinner-border {
    border-color: var(--primary-peach);
    border-right-color: transparent;
    box-shadow: var(--shadow-clay-light);
}

/* Utility classes for Claymorphism */
.text-secondary {
    color: var(--text-secondary) !important;
}

.text-danger {
    color: var(--error) !important;
}

.bg-light {
    background-color: rgba(255, 255, 255, 0.8);
}

@media (min-width: 1440px) {
    .top-app-bar {
        padding-inline: 24px;
    }

    .top-app-bar-actions {
        column-gap: 16px;
    }
}

@media (min-width: 1920px) {
    .top-app-bar {
        padding-inline: 32px;
    }

    .top-app-bar-actions {
        column-gap: 18px;
    }
}

@media (max-width: 1024px) {
    .top-app-bar {
        padding-inline: 12px;
    }

    .btn-top-login,
    .btn-top-primary {
        padding-inline: 16px;
        font-size: 13px;
    }
}

@media (max-width: 768px) {
    .top-app-bar-actions {
        column-gap: 8px;
    }
}

/* Responsive Design */
@media (min-width: 1025px) {
    .content-grid {
        grid-template-columns: var(--input-panel-width) 8px 1fr 8px var(--template-panel-width);
    }
}

/* Tablet (iPad Pro / iPad Air Landscape) */
@media (min-width: 992px) and (max-width: 1200px) {
    .content-grid {
        grid-template-columns: 32% 8px 1fr 8px 180px;
        /* More compact for tablets */
    }

    .prompt-template-panel {
        padding: 16px;
        gap: 12px;
    }

    .prompt-template-head h2 {
        font-size: 1.1rem;
    }
}

@media (max-width: 991px) {
    .content-grid {
        grid-template-columns: 1fr;
        display: flex;
        flex-direction: column;
        min-height: calc(100vh - var(--header-height));
    }

    .panel-resize-handle,
    #templateResizeHandle {
        display: none !important;
    }

    .prompt-template-panel {
        order: -1;
        /* Place on top for mobile/tablet portrait */
        border-left: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.3);
        height: auto;
        min-height: auto;
        padding: 20px;
        background: rgba(248, 250, 252, 0.85);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        margin-bottom: 12px;
        border-radius: 0 0 24px 24px;
    }
}

/* 13.6英寸屏幕优化 (1024px - 1200px) - Refined for 3 columns */
@media (min-width: 1024px) and (max-width: 1200px) {
    .input-panel-body {
        padding: 16px;
    }

    /* 优化图片比例选择器的响应式设计 */
    #ratioSelectorText .size-dropdown,
    #ratioSelectorImg2Img .size-dropdown,
    #ratioSelectorText2Video .size-dropdown,
    #ratioSelectorImg2Video .size-dropdown {
        width: 100%;
        max-width: 100%;
        left: 0;
        right: 0;
        border-radius: var(--radius-lg);
        padding: 12px;
        z-index: 1000;
        box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
    }

    #ratioSelectorText .ratio-grid,
    #ratioSelectorImg2Img .ratio-grid,
    #ratioSelectorText2Video .ratio-grid,
    #ratioSelectorImg2Video .ratio-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 8px;
    }

    #ratioSelectorText .ratio-btn,
    #ratioSelectorImg2Img .ratio-btn,
    #ratioSelectorText2Video .ratio-btn,
    #ratioSelectorImg2Video .ratio-btn {
        height: 75px;
        padding: 10px 6px;
    }

    #ratioSelectorText .ratio-label,
    #ratioSelectorImg2Img .ratio-label,
    #ratioSelectorText2Video .ratio-label,
    #ratioSelectorImg2Video .ratio-label {
        font-size: 11px;
        margin-top: 5px;
    }

    #ratioSelectorText .ratio-icon,
    #ratioSelectorImg2Img .ratio-icon,
    #ratioSelectorText2Video .ratio-icon,
    #ratioSelectorImg2Video .ratio-icon {
        margin-bottom: 5px;
    }

    /* 调整图标大小以适应更小的按钮 */
    #ratioSelectorText .icon-1-1,
    #ratioSelectorImg2Img .icon-1-1,
    #ratioSelectorText2Video .icon-1-1,
    #ratioSelectorImg2Video .icon-1-1 {
        width: 16px;
        height: 16px;
    }

    #ratioSelectorText .icon-3-4,
    #ratioSelectorImg2Img .icon-3-4,
    #ratioSelectorText2Video .icon-3-4,
    #ratioSelectorImg2Video .icon-3-4 {
        width: 12px;
        height: 16px;
    }

    #ratioSelectorText .icon-4-3,
    #ratioSelectorImg2Img .icon-4-3,
    #ratioSelectorText2Video .icon-4-3,
    #ratioSelectorImg2Video .icon-4-3 {
        width: 16px;
        height: 12px;
    }

    #ratioSelectorText .icon-16-9,
    #ratioSelectorImg2Img .icon-16-9,
    #ratioSelectorText2Video .icon-16-9,
    #ratioSelectorImg2Video .icon-16-9 {
        width: 18px;
        height: 10px;
    }

    #ratioSelectorText .icon-9-16,
    #ratioSelectorImg2Img .icon-9-16,
    #ratioSelectorText2Video .icon-9-16,
    #ratioSelectorImg2Video .icon-9-16 {
        width: 10px;
        height: 18px;
    }

    #ratioSelectorText .icon-2-3,
    #ratioSelectorImg2Img .icon-2-3,
    #ratioSelectorText2Video .icon-2-3,
    #ratioSelectorImg2Video .icon-2-3 {
        width: 12px;
        height: 18px;
    }

    #ratioSelectorText .icon-3-2,
    #ratioSelectorImg2Img .icon-3-2,
    #ratioSelectorText2Video .icon-3-2,
    #ratioSelectorImg2Video .icon-3-2 {
        width: 18px;
        height: 12px;
    }

    #ratioSelectorText .icon-21-9,
    #ratioSelectorImg2Img .icon-21-9,
    #ratioSelectorText2Video .icon-21-9,
    #ratioSelectorImg2Video .icon-21-9 {
        width: 20px;
        height: 8px;
    }
}

@media (max-width: 1023px) {
    .content-grid {
        grid-template-columns: 45% 8px 1fr;
    }

    .input-panel-body {
        padding: 20px;
    }
}

/* 統一中斷點：991px 以下切換為單欄 + 抽屜導航 */
@media (max-width: 991px) {
    .content-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto;
        height: auto;
        gap: 16px;
    }

    .panel-resize-handle {
        display: none !important;
    }

    .content-grid>.input-panel {
        margin-right: 0;
    }

    .content-grid>.preview-panel {
        margin-left: 0;
    }

    .input-panel {
        max-height: none;
    }

    .preview-panel {
        min-height: 400px;
    }

    .settings-grid {
        grid-template-columns: 1fr;
    }

    /* 991px 以下顯示 feature-cards (對應 Bootstrap d-lg-none) */
    .feature-cards {
        display: grid !important;
    }

    /* navigation-drawer 在 991px 以下改為抽屜模式 */
    .resize-handle {
        display: none !important;
    }

    .app-shell {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr auto;
        grid-template-areas:
            "main"
            "footer";
    }

    .navigation-drawer {
        position: fixed;
        left: -220px;
        top: 0;
        bottom: 0;
        width: 220px;
        z-index: 2000;
        transition: left 0.3s ease;
        box-shadow: var(--shadow-xl);
    }

    .navigation-drawer.open {
        left: 0;
    }

    .main-content {
        padding: 0;
    }

    .content-container {
        padding: 16px;
    }

    .content-grid {
        gap: 16px;
    }
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .resize-handle {
        display: none !important;
    }

    .panel-resize-handle {
        display: none !important;
    }

    .content-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .content-grid>.input-panel {
        margin-right: 0;
    }

    .content-grid>.preview-panel {
        margin-left: 0;
    }

    .app-shell {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr auto;
        grid-template-areas:
            "main"
            "footer";
        /* margin-top will be set by JavaScript */
    }

    .navigation-drawer {
        position: fixed;
        left: -220px;
        top: 0;
        bottom: 0;
        width: 220px;
        z-index: 2000;
        transition: left 0.3s ease;
        box-shadow: var(--shadow-xl);
    }

    .navigation-drawer.open {
        left: 0;
    }

    .main-content {
        padding: 0;
    }

    .content-container {
        padding: 16px;
    }

    .content-grid {
        gap: 16px;
    }

    .input-panel-header {
        padding: 20px 20px 16px 20px;
    }

    .input-panel-header h1 {
        font-size: 24px;
    }

    .input-panel-body {
        padding: 20px;
        /* Ensure action-section has proper spacing */
        padding-bottom: max(24px, calc(24px + env(safe-area-inset-bottom)));
    }

    .preview-main {
        padding: 20px;
        min-height: 350px;
        max-height: none;
        display: flex;
        flex-direction: column;
        overflow: visible;
    }

    .preview-container {
        flex: 1;
        display: flex;
        flex-direction: column;
        justify-content: center;
        width: 100%;
        position: relative;
    }

    .preview-controls-overlay {
        position: relative;
        margin-top: 16px;
        width: 100%;
        background: transparent;
        padding: 0;
        opacity: 1;
        transform: none;
        transition: none;
    }

    .controls-top {
        display: flex;
        gap: 12px;
        width: 100%;
    }

    .preview-gallery {
        height: auto;
        min-height: 80px;
        margin-bottom: 16px;
        width: 100%;
        overflow-x: auto;
    }

    .thumbnail-grid {
        display: flex;
        gap: 10px;
        padding: 4px;
        width: max-content;
    }

    .thumbnail-item {
        width: 60px;
        height: 60px;
        flex-shrink: 0;
    }

    .settings-row {
        grid-template-columns: 1fr;
    }

    /* 3D result must stay inside preview panel on mobile */
    #threeDResult,
    .three-d-viewer-shell,
    .three-d-advanced-controls,
    .three-d-viewer-toolbar,
    .three-d-controls-row,
    .three-d-toolbar-group,
    .three-d-mode-buttons,
    .three-d-color-toggles {
        width: 100%;
        max-width: 100%;
        min-width: 0;
    }

    .three-d-viewer-toolbar,
    .three-d-toolbar-group,
    .three-d-mode-buttons,
    .three-d-color-toggles {
        flex-wrap: wrap;
    }

    .three-d-tool-btn,
    .three-d-preset-btn,
    .three-d-mode-btn,
    .three-d-toggle-btn,
    .three-d-control-select {
        min-width: 0;
    }
}

/* Scrollbar - Use browser default (matching login.html) */
/* Custom scrollbar styles removed to match login.html behavior */


/* Action Bar */
.action-bar {
    display: flex;
    gap: 12px;
    align-items: center;
}

/* Icon Button with Suffix - Fix overlapping */
.md-text-field .icon-button.suffix {
    position: absolute;
    right: 8px;
    padding: 8px;
    /* Ensure button is clickable and not overlapped by other elements */
    z-index: 10;
    /* Add background for better visibility */
    background-color: rgba(15, 23, 42, 0.7);
    border-radius: 50%;
}

/* Adjust random seed button position */

/* API Settings Container */
.api-settings-container {
    padding: 12px;
    background-color: rgba(15, 23, 42, 0.3);
    border-radius: var(--radius-lg);
    margin-top: 8px;
}

/* Size Selector Component - Renewed */
.size-selector {
    position: relative;
    width: 100%;
}

.size-selector-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
    height: 56px;
    background-color: rgba(255, 255, 255, 0.9);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    color: var(--text-primary);
    box-shadow: var(--shadow-clay-light);
}

.size-selector-header:hover {
    border-color: var(--primary-peach);
    background-color: rgba(255, 255, 255, 1);
    box-shadow: var(--shadow-clay);
    transform: translateY(-2px);
}

.size-selector-header.active {
    border-color: var(--primary-peach);
    box-shadow: var(--shadow-clay);
}

.selected-summary {
    font-size: 16px;
}

.dropdown-icon {
    transition: transform 0.3s ease;
    color: var(--text-secondary);
}

.size-selector-header.open .dropdown-icon {
    transform: rotate(180deg);
}

.res-select-native {
    width: 100%;
}

.res-selector {
    display: none;
}

.res-options {
    display: grid;
    gap: 10px;
}

.res-option {
    padding: 12px 14px;
    border-radius: var(--radius-lg);
    border: var(--border-width) solid var(--border-color);
    background: rgba(255, 255, 255, 0.95);
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    box-shadow: var(--shadow-clay-light);
}

.res-option:active {
    transform: scale(0.98);
}

.res-option.active {
    border-color: var(--primary-peach);
    box-shadow: var(--shadow-clay);
}

.size-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    max-width: 400px;
    margin-top: 8px;
    background-color: rgba(255, 255, 255, 0.95);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-xl);
    z-index: 100;
    padding: 16px;
    box-shadow: var(--shadow-clay);
    display: flex;
    flex-direction: column;
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    gap: 16px;
    box-sizing: border-box;
}

.size-dropdown.d-none {
    display: none;
}

.size-dropdown.open {
    opacity: 1;
    transform: translateY(0);
    /* 平滑展開動畫 */
    transition: opacity 0.3s ease, transform 0.3s ease;
}

/* 确保下拉菜单不会超出父容器范围 */
@media (max-width: 768px) {
    .res-select-native {
        display: none;
    }

    .res-selector {
        display: block;
    }

    .size-dropdown {
        left: 0;
        width: auto;
        max-width: 100vw;
        transform: translateY(-6px);
        position: fixed;
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        padding: 20px;
        padding-bottom: calc(20px + env(safe-area-inset-bottom));
        max-height: 70vh;
        overflow-y: auto;
        /* 精確控制行動端的展開範圍 */
        box-sizing: border-box;
        z-index: 3000;
    }

    .size-dropdown.open {
        transform: translateY(0);
    }
}

body.size-dropdown-open {
    overflow: hidden;
}

/* 修正图片比例选择器的展开范围，确保匹配红框标注 */
.size-selector {
    position: relative;
    width: 100%;
}

#ratioSelectorText .size-dropdown,
#ratioSelectorImg2Img .size-dropdown,
#ratioSelectorText2Video .size-dropdown,
#ratioSelectorImg2Video .size-dropdown {
    width: calc(200% + 16px);
    max-width: calc(200% + 16px);
    left: 0;
    margin-top: 8px;
    border-radius: var(--radius-lg);
    padding: 16px;
    z-index: 1000;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
    min-width: 0;
    transform-origin: top left;
    max-height: 350px;
    overflow-y: auto;
    box-sizing: border-box;
    margin-left: 0;
    margin-right: 0;
}

/* 确保比例网格在展开时正确显示 */
#ratioSelectorText .ratio-grid,
#ratioSelectorImg2Img .ratio-grid,
#ratioSelectorText2Video .ratio-grid,
#ratioSelectorImg2Video .ratio-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    overflow-x: visible;
    padding-bottom: 0;
    width: 100%;
}

/* 优化比例按钮的大小和间距 */
#ratioSelectorText .ratio-btn,
#ratioSelectorImg2Img .ratio-btn,
#ratioSelectorText2Video .ratio-btn,
#ratioSelectorImg2Video .ratio-btn {
    padding: 12px 6px;
    height: 70px;
    width: 100%;
    box-sizing: border-box;
}

#ratioSelectorText .ratio-icon,
#ratioSelectorImg2Img .ratio-icon,
#ratioSelectorText2Video .ratio-icon,
#ratioSelectorImg2Video .ratio-icon {
    margin-bottom: 6px;
}

/* 调整解析度选择器的宽度，与图片比例选择器对齐 */
#resSelectorText,
#resSelectorImg2Img {
    width: 100%;
    max-width: 100%;
}

#videoResolution,
#videoResolutionImg {
    width: 100%;
    max-width: 100%;
}

/* 调整图片比例与解析度区域的宽度一致 */
.settings-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

#ratioSelectorText,
#ratioSelectorImg2Img,
#ratioSelectorText2Video,
#ratioSelectorImg2Video {
    width: 100%;
    max-width: 100%;
}

#resSelectorText,
#resSelectorImg2Img {
    width: 100%;
    max-width: 100%;
}

/* Apple Mac 13.6 寸屏幕优化 (1280px - 1400px) */
@media (min-width: 1280px) and (max-width: 1400px) {
    .content-grid {
        grid-template-columns: 400px 8px 1fr;
    }

    #ratioSelectorText .size-dropdown,
    #ratioSelectorImg2Img .size-dropdown,
    #ratioSelectorText2Video .size-dropdown,
    #ratioSelectorImg2Video .size-dropdown {
        width: 200%;
        max-width: 200%;
        left: 0;
        padding: 16px;
        box-sizing: border-box;
        margin-left: 0;
        margin-right: 0;
    }

    #ratioSelectorText .ratio-grid,
    #ratioSelectorImg2Img .ratio-grid,
    #ratioSelectorText2Video .ratio-grid,
    #ratioSelectorImg2Video .ratio-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 8px;
    }

    #ratioSelectorText .ratio-btn,
    #ratioSelectorImg2Img .ratio-btn,
    #ratioSelectorText2Video .ratio-btn,
    #ratioSelectorImg2Video .ratio-btn {
        height: 75px;
        padding: 14px 8px;
    }

    #ratioSelectorText .ratio-label,
    #ratioSelectorImg2Img .ratio-label,
    #ratioSelectorText2Video .ratio-label,
    #ratioSelectorImg2Video .ratio-label {
        font-size: 12px;
        margin-top: 6px;
    }

    #ratioSelectorText .ratio-icon,
    #ratioSelectorImg2Img .ratio-icon,
    #ratioSelectorText2Video .ratio-icon,
    #ratioSelectorImg2Video .ratio-icon {
        margin-bottom: 6px;
    }

    /* 调整图标大小以适应按钮 */
    #ratioSelectorText .icon-1-1,
    #ratioSelectorImg2Img .icon-1-1,
    #ratioSelectorText2Video .icon-1-1,
    #ratioSelectorImg2Video .icon-1-1 {
        width: 22px;
        height: 22px;
    }

    #ratioSelectorText .icon-3-4,
    #ratioSelectorImg2Img .icon-3-4,
    #ratioSelectorText2Video .icon-3-4,
    #ratioSelectorImg2Video .icon-3-4 {
        width: 17px;
        height: 22px;
    }

    #ratioSelectorText .icon-4-3,
    #ratioSelectorImg2Img .icon-4-3,
    #ratioSelectorText2Video .icon-4-3,
    #ratioSelectorImg2Video .icon-4-3 {
        width: 22px;
        height: 17px;
    }

    #ratioSelectorText .icon-16-9,
    #ratioSelectorImg2Img .icon-16-9,
    #ratioSelectorText2Video .icon-16-9,
    #ratioSelectorImg2Video .icon-16-9 {
        width: 24px;
        height: 13px;
    }

    #ratioSelectorText .icon-9-16,
    #ratioSelectorImg2Img .icon-9-16,
    #ratioSelectorText2Video .icon-9-16,
    #ratioSelectorImg2Video .icon-9-16 {
        width: 13px;
        height: 24px;
    }

    #ratioSelectorText .icon-2-3,
    #ratioSelectorImg2Img .icon-2-3,
    #ratioSelectorText2Video .icon-2-3,
    #ratioSelectorImg2Video .icon-2-3 {
        width: 16px;
        height: 24px;
    }

    #ratioSelectorText .icon-3-2,
    #ratioSelectorImg2Img .icon-3-2,
    #ratioSelectorText2Video .icon-3-2,
    #ratioSelectorImg2Video .icon-3-2 {
        width: 24px;
        height: 16px;
    }

    #ratioSelectorText .icon-21-9,
    #ratioSelectorImg2Img .icon-21-9,
    #ratioSelectorText2Video .icon-21-9,
    #ratioSelectorImg2Video .icon-21-9 {
        width: 26px;
        height: 11px;
    }
}

/* 桌面端 (≥1400px) */
@media (min-width: 1400px) {

    #ratioSelectorText .size-dropdown,
    #ratioSelectorImg2Img .size-dropdown,
    #ratioSelectorText2Video .size-dropdown,
    #ratioSelectorImg2Video .size-dropdown {
        width: 200%;
        max-width: 200%;
        left: 0;
    }
}

/* 平板端 (768px-1279px) */
@media (min-width: 768px) and (max-width: 1279px) {

    #ratioSelectorText .size-dropdown,
    #ratioSelectorImg2Img .size-dropdown,
    #ratioSelectorText2Video .size-dropdown,
    #ratioSelectorImg2Video .size-dropdown {
        width: 200%;
        max-width: 200%;
        left: 0;
        padding: 16px;
        box-sizing: border-box;
        margin-left: 0;
        margin-right: 0;
    }

    #ratioSelectorText .ratio-grid,
    #ratioSelectorImg2Img .ratio-grid,
    #ratioSelectorText2Video .ratio-grid,
    #ratioSelectorImg2Video .ratio-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 10px;
    }

    #ratioSelectorText .ratio-btn,
    #ratioSelectorImg2Img .ratio-btn,
    #ratioSelectorText2Video .ratio-btn,
    #ratioSelectorImg2Video .ratio-btn {
        height: 80px;
        padding: 16px 6px;
    }
}

/* Mobile Menu Overlay - Hide on desktop */
@media (min-width: 768px) {

    .mobile-menu-overlay,
    .mobile-menu {
        display: none !important;
    }

    /* Hide menu button on desktop */
    .start-section .icon-button {
        display: none;
    }
}

/* Mobile Menu Overlay - Show on mobile */
@media (max-width: 767px) {

    /* Top App Bar 兩側對齊布局 */
    .top-app-bar {
        justify-content: space-between;
        top: max(10px, env(safe-area-inset-top));
        left: 12px;
        right: 12px;
        min-height: 62px;
        padding: 9px 13px;
        border-radius: 18px;
        border: 1px solid rgba(203, 213, 225, 0.85);
        background:
            linear-gradient(155deg, rgba(255, 255, 255, 0.98), rgba(241, 245, 249, 0.94));
        box-shadow:
            0 10px 24px rgba(15, 23, 42, 0.12),
            0 1px 0 rgba(255, 255, 255, 0.95) inset;
    }

    /* 隐藏菜单按钮，使 logo 居中 */
    .start-section .icon-button {
        position: absolute;
        left: 14px;
        top: 50%;
        transform: translateY(-50%);
        width: 46px;
        height: 46px;
        border-radius: 12px;
        border: 1px solid rgba(226, 232, 240, 0.95);
        background: rgba(255, 255, 255, 0.96);
        box-shadow: 0 4px 12px rgba(15, 23, 42, 0.07);
    }

    /* Logo 容器靠左對齊，與首頁一致，避免擋到左側 menu 按鈕 */
    .logo-container {
        margin: 0 0 0 64px;
        gap: 8px;
    }

    #siteLogo {
        height: 32px;
    }

    .nav-brand-text {
        font-family: 'Noto Sans', 'Nunito', system-ui, sans-serif;
        font-size: 1.12rem;
        font-weight: 700;
        letter-spacing: 0.02em;
        background: none;
        -webkit-text-fill-color: #0b1b3a;
        color: #0b1b3a;
    }

    /* 调整右侧操作区域位置 - 显示语言切换器和 Start For Free 按钮 */
    .end-section {
        position: absolute;
        right: 12px;
        top: 50%;
        transform: translateY(-50%);
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .lang-toggle {
        min-width: 44px;
        min-height: 44px;
        padding: 10px;
        border-radius: 12px;
        border: 1px solid rgba(226, 232, 240, 0.9);
        box-shadow: 0 4px 12px rgba(15, 23, 42, 0.07);
        flex-shrink: 0;
    }

    .lang-icon {
        width: 20px;
        height: 20px;
        color: #1e3a8a;
    }

    /* 调整按钮大小，确保在小屏幕上显示 (或隐藏以节省空间) */
    .end-section .auth-buttons .btn-primary {
        display: none;
        /* Hide on mobile to fix layout overlap */
    }

    /* 手機版登入按鈕優化 */
    .end-section .auth-buttons .btn-secondary {
        display: inline-flex;
        padding: 8px 12px;
        font-size: 0.85rem;
        font-weight: 600;
        min-height: auto;
    }

    .mobile-menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(15, 23, 42, 0.7);
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-smooth);
    }

    .mobile-menu-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    /* Mobile Menu Panel */
    .mobile-menu {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 85%;
        max-width: 320px;
        background: var(--color-bg);
        box-shadow:
            8px 0 16px rgba(0, 0, 0, 0.1),
            4px 0 8px rgba(0, 0, 0, 0.05);
        z-index: 1001;
        transform: translateX(-100%);
        transition: transform var(--transition-smooth);
        overflow-y: auto;
        padding: 24px;
        display: flex;
        flex-direction: column;
        gap: 24px;
    }

    .mobile-menu.active {
        transform: translateX(0);
    }
}

/* Mobile Menu Header */
.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--color-bg-alt);
}

.mobile-menu-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
}

.mobile-menu-logo svg {
    width: 32px;
    height: 32px;
    color: var(--color-primary);
}

.mobile-menu-close {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    border: none;
    border-radius: var(--radius-clay-sm);
    min-width: 40px;
    min-height: 40px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.mobile-menu-close:hover {
    background: var(--color-primary);
}

.mobile-menu-close svg {
    width: 20px;
    height: 20px;
    stroke: var(--color-text);
}

.mobile-menu-close:hover svg {
    stroke: white;
}

/* Mobile Menu Navigation */
.mobile-menu-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-menu-nav li {
    margin: 0;
}

.mobile-menu-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    color: var(--color-text);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-clay-sm);
    transition: all var(--transition-fast);
}

.mobile-menu-nav a:hover,
.mobile-menu-nav a:focus {
    background: var(--color-bg-alt);
    color: var(--color-primary);
    transform: translateX(4px);
}

.mobile-menu-nav a .material-symbols-outlined {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
    vertical-align: middle;
    align-self: center;
}

.mobile-menu-nav a:hover .material-symbols-outlined,
.mobile-menu-nav a:focus .material-symbols-outlined {
    color: var(--color-primary);
}

/* Mobile Menu Actions */
.mobile-menu-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: auto;
    padding-top: 16px;
    border-top: 2px solid var(--color-bg-alt);
}

.mobile-menu-actions .btn-primary,
.mobile-menu-actions .btn-secondary {
    width: 100%;
    justify-content: center;
    font-size: 1rem;
    padding: 14px 24px;
}

/* 行動端 (≤767px) */
@media (max-width: 768px) {

    #ratioSelectorText .size-dropdown,
    #ratioSelectorImg2Img .size-dropdown,
    #ratioSelectorText2Video .size-dropdown,
    #ratioSelectorImg2Video .size-dropdown {
        width: 100%;
        max-width: 100%;
        left: 0;
        right: 0;
        margin-top: 0;
        padding: 16px;
        box-sizing: border-box;
        margin-left: 0;
        margin-right: 0;
    }

    #ratioSelectorText .ratio-grid,
    #ratioSelectorImg2Img .ratio-grid,
    #ratioSelectorText2Video .ratio-grid,
    #ratioSelectorImg2Video .ratio-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 8px;
    }

    #ratioSelectorText .ratio-btn,
    #ratioSelectorImg2Img .ratio-btn,
    #ratioSelectorText2Video .ratio-btn,
    #ratioSelectorImg2Video .ratio-btn {
        height: 70px;
        padding: 12px 4px;
    }

    .ratio-label {
        font-size: 11px;
        margin-top: 6px;
    }

    .icon-1-1 {
        width: 18px;
        height: 18px;
    }

    .icon-3-4 {
        width: 14px;
        height: 18px;
    }

    .icon-4-3 {
        width: 18px;
        height: 14px;
    }

    .icon-16-9 {
        width: 20px;
        height: 11px;
    }

    .icon-9-16 {
        width: 11px;
        height: 20px;
    }

    .icon-2-3 {
        width: 13px;
        height: 20px;
    }

    .icon-3-2 {
        width: 20px;
        height: 13px;
    }

    .icon-21-9 {
        width: 22px;
        height: 9px;
    }
}

/* 超小屏幕優化 */
@media (max-width: 480px) {
    .input-panel-body {
        padding-bottom: max(32px, calc(32px + env(safe-area-inset-bottom)));
        /* Extra padding for action-section on small screens */
    }

    .preview-main {
        min-height: 250px;
        /* Further reduce min-height on very small screens */
    }

    #ratioSelectorText .ratio-grid,
    #ratioSelectorImg2Img .ratio-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 6px;
    }

    #ratioSelectorText .ratio-btn,
    #ratioSelectorImg2Img .ratio-btn {
        height: 65px;
        padding: 10px 4px;
    }

    .ratio-label {
        font-size: 10px;
        margin-top: 5px;
    }
}

.section-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-weight: 500;
}

/* Auto Toggle Styles */
.auto-toggle-container {
    display: flex;
    align-items: center;
    gap: 8px;
}

.auto-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.auto-toggle {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 24px;
}

.auto-checkbox {
    opacity: 0;
    width: 0;
    height: 0;
}

.auto-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(200, 200, 200, 0.3);
    transition: 0.3s;
    border-radius: 24px;
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-clay-light);
}

.auto-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    border-radius: 50%;
    box-shadow: var(--shadow-clay-light);
}

.auto-checkbox:checked+.auto-slider {
    background-color: var(--primary-peach);
}

.auto-checkbox:checked+.auto-slider:before {
    transform: translateX(24px) scale(1.1);
}

/* Ratio Grid Disabled State */
.ratio-grid.disabled .ratio-btn {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.ratio-grid.disabled .ratio-btn.active {
    border-color: rgba(255, 255, 255, 0.5);
    color: rgba(255, 255, 255, 0.5);
}

/* Auto Toggle Label Active State */
.auto-checkbox:checked~.auto-label {
    color: var(--primary-violet);
}

/* Selector top labels */
.selector-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--slate-400);
    margin-bottom: 6px;
}

.selector-label .material-symbols-outlined {
    font-size: 16px;
    line-height: 1;
    align-self: center;
    vertical-align: middle;
}

/* ========================================
   Model Selector Custom Dropdown
   ======================================== */
.model-selector-group {
    margin-bottom: 20px;
}

.model-select-wrapper {
    position: relative;
}

.model-select-display {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.9);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-clay-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-clay-light);
    user-select: none;
}

.model-select-display:hover {
    background: rgba(255, 255, 255, 1);
    border-color: var(--primary-peach);
    box-shadow: var(--shadow-clay);
}

.model-select-icon {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.model-select-name {
    flex: 1;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
}

.model-select-arrow {
    font-size: 20px;
    color: var(--color-text-muted);
    transition: transform 0.25s ease;
    flex-shrink: 0;
}

.model-select-wrapper.open .model-select-arrow {
    transform: rotate(180deg);
}

.model-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.08);
    z-index: 200;
    overflow: hidden;
    animation: modelDropdownFadeIn 0.18s ease;
}

@keyframes modelDropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.model-select-wrapper.open .model-dropdown {
    display: block;
}

.model-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    cursor: pointer;
    transition: background 0.15s ease;
}

.model-option:hover {
    background: #F8FAFF;
}

.model-option.active {
    background: #F0F6FF;
}

.model-option-icon {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    width: 24px;
    justify-content: center;
}

.model-option-info {
    flex: 1;
    min-width: 0;
}

.model-option-name {
    font-size: 14px;
    font-weight: 600;
    color: #1E293B;
    line-height: 1.3;
}

.model-option-desc {
    font-size: 12px;
    color: #64748B;
    line-height: 1.4;
    margin-top: 2px;
}

.model-option-check {
    font-size: 18px;
    color: #3B82F6;
    flex-shrink: 0;
    visibility: hidden;
}

.model-option.active .model-option-check {
    visibility: visible;
}

@media (max-width: 768px) {
    .size-dropdown {
        left: 0;
        width: 100%;
        max-width: 100%;
        transform: translateY(-6px);
        position: absolute;
        top: 100%;
    }

    .ratio-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 6px;
    }

    .ratio-btn {
        padding: 12px 6px;
    }
}

/* Resolution - Segmented Control Style */
.resolution-group {
    display: flex;
    padding: 4px;
    background-color: rgba(15, 23, 42, 0.6);
    border-radius: var(--radius-md);
    border: 1px solid var(--slate-700);
}

.resolution-btn {
    flex: 1;
    text-align: center;
    padding: 8px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    color: var (--slate-400);
    cursor: pointer;
    transition: all 0.2s;
    background: transparent;
    border: none;
}

.resolution-btn:hover {
    color: var(--white);
}

.resolution-btn.active {
    background-color: var(--white);
    color: var(--slate-900);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Ratio Grid */
.ratio-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    overflow-x: visible;
    padding-bottom: 0;
}

/* Hide scrollbar styles not needed for grid */
.ratio-grid::-webkit-scrollbar {
    display: none;
}

.ratio-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 14px 8px;
    border-radius: var(--radius-lg);
    border: var(--border-width) solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--text-secondary);
    box-shadow: var(--shadow-clay-light);
}

.ratio-btn:hover {
    background-color: rgba(255, 255, 255, 1);
    color: var(--text-primary);
    box-shadow: var(--shadow-clay);
    transform: translateY(-2px);
}

.ratio-btn.active {
    background: var(--gradient-primary);
    border-color: var(--border-color);
    color: var(--text-primary);
    box-shadow: var(--shadow-clay);
    transform: translateY(-2px);
}

.ratio-label {
    font-size: 12px;
    margin-top: 8px;
    font-weight: 500;
}

/* Ratio Icons (Filled Shapes) */
.ratio-icon {
    background-color: currentColor;
    /* Use text color (slate-400 inactive, white active) */
    border-radius: 2px;
    transition: all 0.2s;
}

/* Dimensions for filled icons */
.icon-1-1 {
    width: 22px;
    height: 22px;
}

.icon-3-4 {
    width: 17px;
    height: 22px;
}

.icon-4-3 {
    width: 22px;
    height: 17px;
}

.icon-16-9 {
    width: 24px;
    height: 13px;
}

.icon-9-16 {
    width: 13px;
    height: 24px;
}

.icon-2-3 {
    width: 16px;
    height: 24px;
}

.icon-3-2 {
    width: 24px;
    height: 16px;
}

.icon-21-9 {
    width: 26px;
    height: 11px;
}

/* Custom Size Toggle */
.custom-size-toggle {
    display: flex;
    justify-content: flex-end;
    padding-top: 12px;
    border-top: 1px solid var(--slate-700);
}

.custom-size-toggle .btn-text {
    font-size: 13px;
    padding: 0;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   Footer Styles (Matching login.html - Dark Theme)
   ======================================== */
.footer {
    background: #1E293B;
    color: rgba(255, 255, 255, 0.8);
    padding: 64px 0 24px;
    grid-area: footer;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: white;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
}

.footer-logo svg {
    width: 32px;
    height: 32px;
    stroke: white;
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 16px;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 200ms ease-out;
    cursor: pointer;
}

.social-link:hover {
    background: #3B82F6;
    transform: translateY(-2px);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 32px;
}

.footer-heading {
    color: white;
    font-size: 1rem;
    margin-bottom: 16px;
}

.footer-list {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.footer-list li {
    margin-bottom: 12px;
}

.footer-list a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 200ms ease-out;
    cursor: pointer;
}

.footer-list a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 2fr 3fr;
    }
}

#lang-menu.invisible {
    visibility: hidden;
    opacity: 0;
}

#lang-menu.show {
    visibility: visible !important;
    opacity: 1 !important;
    transform: translateX(-50%) translateY(0) !important;
}

/* Language menu styling tweaks per UX request */
#lang-menu {
    /* enforce a slightly wider, fixed menu width */
    min-width: 170px;
    width: 170px;
    background-color: #2D2D2D !important;
    padding: 6px 8px;
    border: none;
    /* remove outer divider look */
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.6);
    /* center the menu under the globe icon */
    left: 50%;
    right: auto;
    transform: translateX(-50%) translateY(-8px);
    transform-origin: top center;
    margin-top: 20px !important;
}

/* Language menu item styling */
.lang-menu-item {
    display: block;
    width: 100%;
    padding: 10px 12px;
    text-align: left;
    color: #FFFFFF;
    background: transparent;
    border: 2px solid transparent;
    /* keeps layout stable when active */
    border-radius: 6px;
    margin: 0;
    /* no visual separators/gaps between items */
}

.lang-menu-item.active {
    border-color: #3B82F6;
    /* blue border to indicate selected */
    outline: 2px solid #3B82F6;
    outline-offset: -2px;
    background-color: rgba(59, 130, 246, 0.06);
}

.lang-menu-item:hover {
    background-color: rgba(255, 255, 255, 0.03);
}

/* User Menu Styles */
.user-menu-container {
    position: relative;
    display: flex;
    align-items: center;
}

.user-menu-button {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--color-bg);
    border: var(--border-clay-sm) solid rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-clay-sm);
    padding: 8px 12px;
    min-height: 44px;
    cursor: pointer;
    transition: all var(--transition-smooth);
    box-shadow: var(--shadow-clay);
    font-family: var(--font-body);
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.875rem;
}

.user-menu-button:hover {
    background-color: rgba(255, 255, 255, 1);
    border-color: var(--primary-peach);
    transform: translateY(-2px);
    box-shadow: var(--shadow-clay);
}

.user-menu-button:focus-visible {
    outline: 2px solid var(--primary-peach);
    outline-offset: 2px;
}

.user-avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gradient-primary);
    overflow: hidden;
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-clay-light);
}

.avatar-icon {
    font-size: 24px;
    color: var(--text-primary);
}

.username-text {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.menu-arrow {
    font-size: 18px;
    color: var(--text-secondary);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.user-menu-button[aria-expanded="true"] .menu-arrow {
    transform: rotate(180deg);
}

.user-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--color-bg);
    border: var(--border-clay-sm) solid rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-clay-sm);
    box-shadow: var (--shadow-clay-hover);
    min-width: 200px;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-smooth);
    z-index: 100;
}

.user-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.menu-header {
    padding: 16px;
    background: var(--gradient-primary);
    border-bottom: var(--border-width) solid var(--border-color);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar-large {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-primary);
    overflow: hidden;
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-clay-light);
}

.user-avatar-large .material-symbols-outlined {
    font-size: 32px;
    color: var(--text-primary);
    vertical-align: middle;
    align-self: center;
}

.user-details {
    flex: 1;
}

.user-name {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.user-email {
    font-size: 13px;
    color: var(--text-secondary);
}

.menu-divider {
    height: var(--border-width);
    background-color: var(--border-color);
    margin: 0;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    cursor: pointer;
    border: none;
    background: transparent;
    width: 100%;
    text-align: left;
    font-size: 14px;
    border-radius: var(--radius-md);
    margin: 2px 8px;
}

.menu-item:hover {
    background-color: rgba(253, 188, 180, 0.1);
    color: var(--text-primary);
    transform: translateX(4px);
}

.menu-item .material-symbols-outlined {
    font-size: 20px;
    color: var(--text-secondary);
    transition: color 0.2s;
    vertical-align: middle;
    align-self: center;
}

.menu-item:hover .material-symbols-outlined {
    color: var(--text-primary);
}

.menu-item-arrow {
    margin-left: auto;
    font-size: 18px;
}

.logout-item {
    color: var(--error);
}

.logout-item:hover {
    background-color: rgba(255, 107, 107, 0.1);
    color: var(--error);
}

.logout-item .material-symbols-outlined {
    color: var(--error);
}

.logout-item:hover .material-symbols-outlined {
    color: var(--error);
}

/* Button secondary style for Sign Up */
.btn-secondary {
    background: var(--color-bg);
    color: var(--color-text);
    padding: 8px 16px;
    /* Mobile: Compact padding */
    font-size: 0.875rem;
    border-radius: var(--radius-clay-sm);
    border: var(--border-clay-sm) solid rgba(255, 255, 255, 0.9);
    box-shadow: var(--shadow-clay);
    white-space: nowrap;
    display: none;
    /* Hide on very small screens */
}

@media (min-width: 480px) {
    .btn-secondary {
        display: inline-block;
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

@media (min-width: 640px) {
    .btn-secondary {
        padding: 12px 24px;
        font-size: 1rem;
    }
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-clay-hover);
}

/* Preview Controls Overlay */
/* Unified Desktop & Mobile Preview Styles */

.preview-controls-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;

    /* Make transparent and allow click-through by default */
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    pointer-events: none;

    /* Layout */
    display: flex;
    flex-direction: column;
    justify-content: flex-end;

    /* Padding to avoid overlap with FAB */
    padding: 16px;
    padding-bottom: max(80px, env(safe-area-inset-bottom));
    z-index: 5;

    /* Reset transforms/opacity */
    opacity: 1;
    transform: none;
    transition: none;
}

/* Hide legacy controls completely */
.preview-controls-overlay .controls-top,
.preview-controls-overlay .controls-bottom {
    display: none !important;
}

/* Gallery Strip */
.preview-controls-overlay .preview-gallery {
    pointer-events: auto;
    /* Subtle background strip */
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);

    width: 100%;
    height: auto;
    min-height: 100px;
    padding: 12px 0;
    margin: 0;

    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);

    /* Horizontal scroll */
    overflow-x: auto;
    overflow-y: hidden;
}

.preview-controls-overlay .thumbnail-grid {
    display: flex;
    flex-wrap: nowrap;
    gap: 12px;
    justify-content: center;
    padding: 0 16px;
}

/* FAB is always visible (Desktop & Mobile) */
.preview-actions-fab {
    position: absolute;
    right: 16px;
    /* Position at bottom-right, ensure it doesn't cover video controls */
    bottom: 70px;
    top: auto;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    /* Dark background matching mobile */
    background: rgba(15, 23, 42, 0.9);
    color: #fff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    z-index: 25;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, background-color 0.2s;
}

.preview-actions-fab:hover {
    transform: scale(1.05);
    background: rgba(15, 23, 42, 1);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

.preview-actions-fab:active {
    transform: scale(0.95);
}

/* Bottom Sheet (Action Sheet) */
.preview-action-sheet {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: flex;
    align-items: flex-end;
    justify-content: center;

    /* Transition for entry */
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.preview-action-sheet.show {
    opacity: 1;
    pointer-events: auto;
}

.preview-action-sheet-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
}

.preview-action-sheet-panel {
    position: relative;
    width: 100%;
    max-width: 480px;
    /* Limit width on desktop */
    background: var(--white);
    border-top-left-radius: 24px;
    border-top-right-radius: 24px;
    padding: 24px;
    padding-bottom: max(24px, env(safe-area-inset-bottom));
    box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.2);

    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.preview-action-sheet.show .preview-action-sheet-panel {
    transform: translateY(0);
}

/* Header */
.preview-action-sheet-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.preview-action-sheet-title {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.preview-action-sheet-close {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: var(--light-bg);
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s;
}

.preview-action-sheet-close:hover {
    background: var(--slate-200);
}

/* Body Buttons */
.preview-action-sheet-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.preview-action-sheet-body .btn {
    height: 52px;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.preview-action-sheet-body .material-symbols-outlined {
    font-size: 22px;
}

/* Remove old media queries that hid FAB on desktop */

/* Adjust main preview image to be full height but allow space for overlay? 
   Actually overlay sits ON TOP. 
*/
@media (min-width: 769px) {
    .preview-main {
        padding: 0;
        overflow: hidden;
    }

    .preview-media {
        max-height: calc(100vh - var(--header-height) - 200px);
        width: 100%;
        height: auto;
        object-fit: contain;
        background: #000;
    }

    .model-viewer-container {
        max-height: min(78dvh, calc(var(--app-dvh, 100vh) - var(--header-height) - 175px));
        min-height: clamp(360px, 56vh, 640px);
        width: 100%;
        height: min(78dvh, calc(var(--app-dvh, 100vh) - var(--header-height) - 175px));
    }
}

/* === Preview Navigation Arrows === */
.preview-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 20;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
    color: #333;
    padding: 0;
}

.preview-nav-btn:hover {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.22);
    transform: translateY(-50%) scale(1.08);
}

.preview-nav-btn:active {
    transform: translateY(-50%) scale(0.96);
}

.preview-nav-prev {
    left: 12px;
}

.preview-nav-next {
    right: 12px;
}

.preview-nav-btn .material-symbols-outlined {
    font-size: 28px;
    line-height: 1;
}

/* ============================================
   User Profile Styles
   ============================================ */

/* Profile Container */
.profile-container {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 24px;
}

/* Page Header */
.profile-header {
    margin-bottom: 32px;
    text-align: left;
}

.header-content h1.page-title {
    font-family: var(--font-heading);
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 8px 0;
}

.header-content p.page-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    margin: 0;
}

/* Profile Card */
.profile-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-clay);
    margin-bottom: 24px;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.profile-card:hover {
    border-color: var(--primary-peach);
    box-shadow: var(--shadow-clay-hover);
    transform: translateY(-4px);
}

.profile-card-header {
    padding: 32px;
    display: flex;
    align-items: center;
    gap: 24px;
    position: relative;
}

/* User Avatar Large */
.user-avatar-large {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-clay);
    overflow: hidden;
}

.user-initials {
    font-family: var(--font-heading);
    font-size: 32px;
    font-weight: 700;
    color: white;
    text-transform: uppercase;
}

/* User Info Header */
.user-info-header {
    flex: 1;
    min-width: 0;
}

.user-name-display {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 8px 0;
}

.user-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.user-email-display {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Member Badge */
.member-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 16px;
    font-size: 12px;
    font-weight: 600;
    color: #3B82F6;
}

.member-badge.pro {
    background: rgba(147, 51, 234, 0.1);
    border-color: rgba(147, 51, 234, 0.3);
    color: #9333EA;
}

.member-badge.premium {
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.2), rgba(168, 85, 247, 0.2));
    border-color: rgba(236, 72, 153, 0.3);
    color: #EC4899;
}

/* Edit Profile Button */
.edit-profile-btn {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-clay-light);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.stat-card:hover {
    border-color: var(--primary-peach);
    box-shadow: var(--shadow-clay);
    transform: translateY(-2px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(59, 130, 246, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon .material-symbols-outlined {
    font-size: 24px;
    color: #3B82F6;
}

.stat-content {
    flex: 1;
    min-width: 0;
}

.stat-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    margin: 0 0 4px 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.stat-masked {
    font-family: monospace;
    letter-spacing: 2px;
}

/* Info Card */
.info-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-clay);
    margin-bottom: 24px;
    overflow: hidden;
}

.info-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 24px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
    background: rgba(59, 130, 246, 0.02);
}

.info-card-header .material-some-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: rgba(59, 130, 246, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-card-header .material-some-icon .material-symbols-outlined {
    font-size: 18px;
    color: #3B82F6;
}

.info-card-header h3 {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.info-card-body {
    padding: 24px;
}

.info-item {
    padding: 16px 0;
    border-bottom: 1px solid rgba(148, 163, 184, 0.05);
}

.info-item:last-child {
    border-bottom: none;
}

.info-item label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-value {
    display: flex;
    align-items: center;
    gap: 8px;
}

.info-value span {
    font-size: 15px;
    color: var(--text-primary);
    font-weight: 500;
}

/* Settings Card */
.settings-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-clay);
    margin-bottom: 24px;
    overflow: hidden;
}

.settings-list {
    padding: 8px;
}

.setting-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 16px;
    border-radius: var(--radius-lg);
    transition: all 0.2s ease;
}

.setting-item:hover {
    background: rgba(59, 130, 246, 0.05);
}

.setting-item-danger {
    border: 1px solid rgba(239, 68, 68, 0.2);
    margin-top: 8px;
}

.setting-item-danger:hover {
    background: rgba(239, 68, 68, 0.05);
}

.setting-info {
    flex: 1;
    min-width: 0;
}

.setting-info h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 4px 0;
}

.setting-info p {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0;
}

.setting-item .btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 600;
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay:not(.d-none) {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-clay);
    max-width: 500px;
    width: 100%;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal-overlay:not(.d-none) .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 24px 20px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.modal-header h3 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.modal-close {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: var(--border-width) solid var(--border-color);
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-clay-light);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 1);
    color: var(--text-primary);
    border-color: var(--primary-peach);
    box-shadow: var(--shadow-clay);
    transform: translateY(-2px);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    padding: 20px 24px;
    border-top: 1px solid rgba(148, 163, 184, 0.1);
}

/* Form Group Styles */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-group .form-control {
    width: 100%;
    padding: 12px 16px;
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 16px;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.9);
    box-shadow: var(--shadow-clay-light);
    transition: all 0.3s ease;
}

.form-group .form-control:focus {
    outline: none;
    border-color: var(--primary-peach);
    box-shadow: var(--shadow-clay);
    transform: translateY(-2px);
}

.form-group .form-control::placeholder {
    color: var(--text-muted);
}

/* Delete Warning */
.delete-warning {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 20px;
}

/* Notification Container */
.notification-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
    pointer-events: none;
}

.notification {
    padding: 16px 20px;
    border-radius: var(--radius-lg);
    background: white;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 12px;
    pointer-events: auto;
    animation: slideIn 0.3s ease-out;
    max-width: 400px;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(100px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.notification-success {
    border-left: 4px solid #4ade80;
}

.notification-error {
    border-left: 4px solid #f87171;
}

.notification .material-symbols-outlined {
    font-size: 20px;
}

.notification-success .material-symbols-outlined {
    color: #4ade80;
}

.notification-error .material-symbols-outlined {
    color: #f87171;
}

/* ============================================
   Profile Page Responsive Styles
   ============================================ */

@media (max-width: 768px) {
    .profile-container {
        padding: 16px;
    }

    .header-content h1.page-title {
        font-size: 24px;
    }

    .header-content p.page-subtitle {
        font-size: 14px;
    }

    /* Profile Card */
    .profile-card-header {
        padding: 24px 20px;
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }

    .user-avatar-large {
        width: 64px;
        height: 64px;
    }

    .user-initials {
        font-size: 28px;
    }

    .user-name-display {
        font-size: 20px;
    }

    .user-meta {
        justify-content: center;
        flex-direction: column;
        gap: 8px;
    }

    .edit-profile-btn {
        width: 100%;
        justify-content: center;
    }

    /* Stats Grid */
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .stat-card {
        padding: 16px;
    }

    .stat-icon {
        width: 40px;
        height: 40px;
    }

    .stat-icon .material-symbols-outlined {
        font-size: 20px;
    }

    .stat-value {
        font-size: 18px;
    }

    /* Info Card */
    .info-card-header {
        padding: 16px 20px;
    }

    .info-card-body {
        padding: 20px;
    }

    .info-item {
        padding: 12px 0;
    }

    /* Settings Card */
    .settings-list {
        padding: 4px;
    }

    .setting-item {
        padding: 16px 12px;
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .setting-item .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .profile-container {
        padding: 12px;
    }

    .header-content h1.page-title {
        font-size: 20px;
    }

    .header-content p.page-subtitle {
        font-size: 13px;
    }

    /* Profile Card */
    .profile-card {
        border-radius: var(--radius-lg);
    }

    .profile-card-header {
        padding: 20px 16px;
        gap: 12px;
    }

    .user-avatar-large {
        width: 56px;
        height: 56px;
    }

    .user-initials {
        font-size: 24px;
    }

    .user-name-display {
        font-size: 18px;
    }

    .user-email-display {
        font-size: 13px;
    }

    /* Stats Cards */
    .stat-card {
        padding: 14px;
        border-radius: var(--radius-md);
    }

    .stat-icon {
        width: 36px;
        height: 36px;
        border-radius: 10px;
    }

    .stat-label {
        font-size: 11px;
    }

    .stat-value {
        font-size: 16px;
    }

    /* Info Card */
    .info-card,
    .settings-card {
        border-radius: var(--radius-lg);
    }

    .info-card-header,
    .settings-card .info-card-header {
        padding: 14px 16px;
    }

    .info-card-header h3 {
        font-size: 16px;
    }

    .info-card-body {
        padding: 16px;
    }

    .info-item {
        padding: 10px 0;
    }

    .info-item label {
        font-size: 11px;
    }

    .info-value span {
        font-size: 14px;
    }

    /* Settings */
    .setting-item {
        padding: 14px 10px;
        border-radius: var(--radius-md);
    }

    .setting-info h4 {
        font-size: 14px;
    }

    .setting-info p {
        font-size: 12px;
    }

    .setting-item .btn {
        font-size: 13px;
    }

    /* Notifications */
    .notification-container {
        top: 16px;
        right: 16px;
        left: 16px;
    }

    .notification {
        max-width: 100%;
        padding: 14px 16px;
    }
}

/* ============================================
   Mobile Bottom Sheet & Native Select Fixes
   ============================================ */

/* Mobile Bottom Sheet Styles */
.mobile-bottom-sheet-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.mobile-bottom-sheet-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-bottom-sheet-content {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px 20px 0 0;
    padding: 20px;
    padding-bottom: calc(20px + env(safe-area-inset-bottom));
    max-height: 80vh;
    overflow-y: auto;
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
}

.mobile-bottom-sheet-overlay.active .mobile-bottom-sheet-content {
    transform: translateY(0);
}

.mobile-bottom-sheet-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.mobile-bottom-sheet-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.mobile-bottom-sheet-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
}

/* Mobile Ratio Selector Styles in Bottom Sheet */
.mobile-bottom-sheet-content .ratio-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    margin-top: 10px;
}

.mobile-bottom-sheet-content .ratio-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 12px 4px;
    height: 70px;
    border-radius: var(--radius-lg);
    border: var(--border-width) solid var(--border-color);
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--text-secondary);
    box-shadow: var(--shadow-clay-light);
    cursor: pointer;
    transition: all 0.2s;
}

.mobile-bottom-sheet-content .ratio-btn:active {
    transform: scale(0.98);
}

.mobile-bottom-sheet-content .ratio-btn.active {
    background: var(--gradient-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow-clay);
    border-color: transparent;
}

.mobile-bottom-sheet-content .ratio-label {
    font-size: 11px;
    margin-top: 6px;
    font-weight: 500;
}

.mobile-bottom-sheet-content .ratio-icon {
    margin-bottom: 0;
    background-color: currentColor;
    opacity: 0.8;
}

/* Icons size adjustment for mobile sheet */
.mobile-bottom-sheet-content .icon-1-1 {
    width: 18px;
    height: 18px;
}

.mobile-bottom-sheet-content .icon-3-4 {
    width: 14px;
    height: 18px;
}

.mobile-bottom-sheet-content .icon-4-3 {
    width: 18px;
    height: 14px;
}

.mobile-bottom-sheet-content .icon-16-9 {
    width: 20px;
    height: 11px;
}

.mobile-bottom-sheet-content .icon-9-16 {
    width: 11px;
    height: 20px;
}

.mobile-bottom-sheet-content .icon-2-3 {
    width: 13px;
    height: 20px;
}

.mobile-bottom-sheet-content .icon-3-2 {
    width: 20px;
    height: 13px;
}

.mobile-bottom-sheet-content .icon-21-9 {
    width: 22px;
    height: 9px;
}

/* Resolution Native Select Fix - Replaced by Bottom Sheet */
@media (max-width: 768px) {

    /* Hide the custom dropdown for resolution on mobile (just in case) */
    .res-selector {
        display: none !important;
    }

    /* Disable native select interaction to use custom bottom sheet */
    .md-select-field.mobile-res-trigger select {
        pointer-events: none;
    }

    .md-select-field.mobile-res-trigger {
        cursor: pointer;
    }

}

/* Resolution Bottom Sheet Styles */
.mobile-bottom-sheet-content .res-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: 10px;
}

.mobile-bottom-sheet-content .res-sheet-btn {
    padding: 16px;
    border-radius: var(--radius-lg);
    border: var(--border-width) solid var(--border-color);
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    box-shadow: var(--shadow-clay-light);
    cursor: pointer;
    transition: all 0.2s;
}

.mobile-bottom-sheet-content .res-sheet-btn:active {
    transform: scale(0.98);
}

.mobile-bottom-sheet-content .res-sheet-btn.active {
    background: var(--gradient-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow-clay);
    border-color: transparent;
}

/* SV20 Gallery UI Styles */
.sv20-upload-section {
    margin-bottom: 24px;
}

.sv20-upload-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.sv20-upload-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--slate-800);
    display: flex;
    align-items: center;
    gap: 8px;
}

.sv20-upload-title .material-symbols-outlined {
    font-size: 18px;
    color: var(--primary-violet);
}

.sv20-duration-tracker {
    font-size: 12px;
    color: var(--slate-500);
    font-weight: 500;
}

.sv20-empty-state {
    border: 2px dashed #d1d5db;
    border-radius: var(--radius-xl);
    padding: 32px 20px;
    text-align: center;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(248, 250, 252, 0.9));
    transition: all 0.2s;
    cursor: pointer;
}

.sv20-empty-state:hover,
.sv20-empty-state.dragover,
.sv20-empty-state.drag-over {
    border-color: var(--primary-violet);
    background: linear-gradient(135deg, rgba(255, 255, 255, 1), rgba(245, 243, 255, 0.5));
}

.sv20-empty-icon-circle {
    width: 60px;
    height: 60px;
    background: #f5f3ff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px auto;
}

.sv20-empty-icon-circle .material-symbols-outlined {
    font-size: 28px;
    color: var(--primary-violet);
}

.sv20-empty-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--slate-800);
    margin-bottom: 4px;
}

.sv20-empty-subtitle {
    font-size: 13px;
    color: var(--slate-500);
}

.sv20-source-input-row {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
}

.sv20-source-input-row .form-control {
    font-size: 13px;
}

.sv20-source-input-row .btn {
    white-space: nowrap;
}

.sv20-gallery-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.sv20-inline-upload-loading {
    margin-top: 10px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid #e9d5ff;
    background: rgba(245, 243, 255, 0.95);
    color: #7c3aed;
    font-size: 12px;
    font-weight: 600;
}

.sv20-inline-upload-loading .spinner-border {
    width: 14px;
    height: 14px;
    border-width: 2px;
}

.sv20-preview-card,
.sv20-add-btn-card {
    width: 140px;
    height: 140px;
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.sv20-preview-card {
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: var(--shadow-sm);
    background: #fff;
}

.sv20-preview-card img,
.sv20-preview-card video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.sv20-preview-card.audio-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #fafafa;
    border: 1px solid #eaeaea;
}

.sv20-preview-card.audio-card .audio-play-circle {
    width: 48px;
    height: 48px;
    background: #eeddf8;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
}

.sv20-preview-card.audio-card .material-symbols-outlined {
    color: #a855f7;
    font-size: 24px;
    margin-left: 2px;
}

.sv20-preview-card.image-asset-card,
.sv20-preview-card.video-asset-card,
.sv20-preview-card.audio-asset-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: #f8fafc;
    border: 1px dashed #cbd5e1;
    text-align: center;
    padding: 10px;
}

.sv20-preview-card.image-asset-card .material-symbols-outlined,
.sv20-preview-card.video-asset-card .material-symbols-outlined,
.sv20-preview-card.audio-asset-card .material-symbols-outlined {
    font-size: 30px;
    color: #6366f1;
}

.sv20-preview-card.video-asset-card .material-symbols-outlined {
    color: #2563eb;
}

.sv20-preview-card.audio-asset-card .material-symbols-outlined {
    color: #7c3aed;
}

.sv20-preview-card.image-asset-card .asset-label,
.sv20-preview-card.video-asset-card .asset-label,
.sv20-preview-card.audio-asset-card .asset-label {
    font-size: 11px;
    font-weight: 600;
    color: #334155;
    word-break: break-all;
}

.sv20-badge-number {
    position: absolute;
    top: 8px;
    left: 8px;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 600;
    z-index: 2;
}

.sv20-badge-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.65);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    z-index: 2;
}

.sv20-preview-card.audio-card .sv20-badge-duration {
    position: relative;
    bottom: auto;
    right: auto;
    background: transparent;
    color: #a855f7;
    font-weight: 600;
    font-size: 12px;
}

.sv20-remove-btn {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 30px;
    height: 30px;
    background: #ef4444;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.2s;
    z-index: 10;
    border: 2px solid white;
}

.sv20-preview-card:hover .sv20-remove-btn {
    opacity: 1;
    transform: scale(1);
    top: 6px;
    right: 6px;
}

.sv20-remove-btn .material-symbols-outlined {
    font-size: 16px !important;
    font-weight: bold;
    color: white !important;
}

.sv20-add-btn-card {
    border: 2px dashed #d1d5db;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #fafafa;
    cursor: pointer;
    transition: all 0.2s;
    color: #9ca3af;
}

.sv20-add-btn-card:hover {
    border-color: var(--primary-violet);
    background: #f5f3ff;
    color: var(--primary-violet);
}

.sv20-add-btn-card .material-symbols-outlined {
    font-size: 24px;
    margin-bottom: 4px;
}

.sv20-add-btn-card span {
    font-size: 12px;
    font-weight: 500;
}

.img2img-upload-section .sv20-upload-header {
    margin-bottom: 12px;
}

.sv20-asset-library-section {
    border: 1px solid rgba(34, 211, 238, 0.28);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(248, 250, 252, 0.98)),
        linear-gradient(135deg, rgba(34, 211, 238, 0.08), rgba(59, 130, 246, 0.04));
    border-radius: 18px;
    padding: 18px 20px;
}

.sv20-asset-library-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 14px;
}

.sv20-asset-library-browse-btn {
    min-width: 164px;
    flex-shrink: 0;
    border-color: rgba(34, 211, 238, 0.55);
    color: #0891b2;
    background: rgba(236, 254, 255, 0.72);
}

.sv20-asset-library-browse-btn:hover,
.sv20-asset-library-browse-btn:focus {
    border-color: rgba(6, 182, 212, 0.7);
    background: rgba(207, 250, 254, 0.92);
    color: #0e7490;
}

.sv20-asset-library-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: stretch;
}

.sv20-asset-library-controls .form-control {
    flex: 1 1 100%;
    min-width: 0;
}

.sv20-asset-library-controls .form-select {
    flex: 1 1 110px;
    max-width: none;
    min-width: 96px;
    padding-left: 12px;
    padding-right: 36px;
}

.sv20-asset-library-controls .btn {
    flex: 0 0 auto;
    min-width: 80px;
    padding-left: 16px;
    padding-right: 16px;
    white-space: nowrap;
}

.sv20-asset-library-controls .form-control,
.sv20-asset-library-controls .form-select,
.sv20-asset-library-controls .btn {
    min-height: 52px;
    border-radius: 16px;
}

.sv20-asset-library-controls .form-control,
.sv20-asset-library-controls .form-select {
    border: 1px solid rgba(148, 163, 184, 0.28);
    box-shadow: 0 8px 22px rgba(15, 23, 42, 0.08);
}

.sv20-asset-library-controls .form-select {
    padding-right: 42px;
}

.sv20-asset-library-helper {
    margin-top: 14px;
    font-size: 14px;
    line-height: 1.65;
    color: #64748b;
}

.sv20-asset-modal {
    position: fixed;
    inset: 0;
    z-index: 1100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
}

body.sv20-asset-modal-open {
    overflow: hidden;
}

.sv20-asset-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.44);
    backdrop-filter: blur(2px);
}

.sv20-asset-modal-dialog {
    position: relative;
    width: min(1040px, 100%);
    margin: 0;
    max-height: calc(100vh - 48px);
    overflow: visible;
    border-radius: 18px;
    border: 1px solid rgba(148, 163, 184, 0.25);
    background: #f2f4fb;
    box-shadow: 0 24px 56px rgba(15, 23, 42, 0.3);
    display: flex;
    flex-direction: column;
}

.sv20-asset-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 18px 20px 14px 20px;
}

.sv20-asset-modal-header h3 {
    margin: 0;
    font-size: 30px;
    font-weight: 700;
    color: #111827;
    line-height: 1.15;
}

.sv20-asset-modal-close {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 10px;
    background: transparent;
    color: #64748b;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.sv20-asset-modal-close:hover {
    background: rgba(148, 163, 184, 0.16);
    color: #0f172a;
}

.sv20-asset-modal-tabs {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin: 0 20px 16px 20px;
    padding: 4px;
    background: #e2e8f0;
    border-radius: 10px;
    width: fit-content;
}

.sv20-asset-tab {
    border: none;
    border-radius: 8px;
    background: transparent;
    color: #475569;
    font-size: 14px;
    font-weight: 700;
    padding: 8px 12px;
    cursor: pointer;
}

.sv20-asset-tab.active {
    background: #ffffff;
    color: #111827;
    box-shadow: 0 1px 4px rgba(15, 23, 42, 0.12);
}

.sv20-asset-modal-controls-wrap {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    margin: 0 20px 16px 20px;
    gap: 12px;
}

.sv20-asset-modal-tabs {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px;
    background: #e2e8f0;
    border-radius: 10px;
    width: fit-content;
}

.sv20-asset-filters-container {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.sv20-filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sv20-filter-group label {
    font-size: 13px;
    font-weight: 500;
    color: #64748b;
    margin: 0;
}

.sv20-filter-group select {
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    background-color: #fff;
    padding: 4px 28px 4px 12px;
    font-size: 13px;
    font-weight: 600;
    color: #0f172a;
    cursor: pointer;
    min-width: 100px;
}

.sv20-asset-modal-grid {
    flex: 1 1 auto;
    padding: 0 20px 20px 20px;
    overflow-x: hidden;
    overflow-y: auto;
    min-height: 0;
    /* 關鍵：允許 flex 子項收縮以啟用滾動 */
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    grid-auto-rows: min-content;
    align-items: start;
    gap: 14px;
}

.sv20-asset-card {
    border: none;
    border-radius: 16px;
    background: #ffffff;
    overflow: hidden;
    cursor: pointer;
    position: relative;
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    height: fit-content;
    /* 讓卡片高度隨內容（圖片比例）調整 */
}

.sv20-asset-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.15);
}

.sv20-asset-card img {
    transition: transform 0.3s ease;
}

.sv20-asset-card:hover img {
    transform: scale(1.05);
}

.sv20-asset-thumb-wrap {
    position: relative;
    background: #e2e8f0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.sv20-asset-thumb-wrap img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    /* 保持比例不變形 */
}

.sv20-asset-thumb-wrap .material-symbols-outlined {
    font-size: 46px;
    color: #64748b;
}

.sv20-portrait-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px 10px 12px 10px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    pointer-events: none;
}

.sv20-portrait-country {
    color: #ffffff;
    font-size: 14px;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    margin-bottom: 2px;
}

.sv20-portrait-age {
    color: rgba(255, 255, 255, 0.9);
    font-size: 11px;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.sv20-asset-type-badge {
    position: absolute;
    top: 8px;
    left: 8px;
    border-radius: 7px;
    padding: 3px 7px;
    font-size: 11px;
    font-weight: 700;
    color: #ffffff;
    background: #0ea5e9;
}

.sv20-asset-type-badge.video {
    background: #2563eb;
}

.sv20-asset-type-badge.audio {
    background: #7c3aed;
}

.sv20-asset-modal-empty {
    margin: 8px 20px 20px 20px;
    border: 1px dashed rgba(148, 163, 184, 0.45);
    border-radius: 12px;
    color: #64748b;
    text-align: center;
    padding: 18px;
    font-size: 14px;
    font-weight: 600;
}

.sv20-prompt-reference-wrap {
    position: relative;
}

.sv20-prompt-mention-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 8px;
    width: min(520px, calc(100% - 16px));
    background: #ffffff;
    border: 1px solid rgba(148, 163, 184, 0.35);
    border-radius: 14px;
    box-shadow: 0 14px 30px rgba(15, 23, 42, 0.16);
    padding: 8px;
    z-index: 30;
}

.sv20-prompt-mention-title {
    font-size: 12px;
    font-weight: 700;
    color: #64748b;
    padding: 6px 8px 8px 8px;
}

.sv20-prompt-mention-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 240px;
    overflow-y: auto;
}

.sv20-prompt-mention-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    border: none;
    border-radius: 10px;
    background: #f8fafc;
    color: #0f172a;
    text-align: left;
    padding: 8px 10px;
    cursor: pointer;
}

.sv20-prompt-mention-item:hover,
.sv20-prompt-mention-item.active {
    background: #eff6ff;
}

.sv20-prompt-mention-thumb {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    object-fit: cover;
    background: #e2e8f0;
    flex-shrink: 0;
}

.sv20-prompt-mention-icon {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #ede9fe;
    color: #6d28d9;
    flex-shrink: 0;
}

.sv20-prompt-mention-text {
    font-size: 14px;
    font-weight: 700;
    color: #1e293b;
}

@media (max-width: 767.98px) {
    .sv20-asset-library-section {
        border-radius: 14px;
        padding: 14px 14px 12px 14px;
    }

    .sv20-asset-library-header {
        flex-direction: column;
        align-items: stretch;
        margin-bottom: 10px;
    }

    .sv20-asset-library-controls {
        gap: 10px;
    }

    .sv20-asset-library-controls .form-control,
    .sv20-asset-library-controls .form-select,
    .sv20-asset-library-controls .btn {
        min-height: 48px;
        border-radius: 12px;
    }

    .sv20-asset-library-browse-btn {
        width: 100%;
        min-width: 0;
    }

    .sv20-asset-library-helper {
        margin-top: 10px;
        font-size: 13px;
        line-height: 1.5;
    }

    .sv20-asset-modal-dialog {
        width: 100%;
        margin: 0;
        max-height: calc(100vh - 16px);
        border-radius: 14px;
    }

    .sv20-asset-modal-header {
        padding: 12px 12px 10px 12px;
    }

    .sv20-asset-modal-header h3 {
        font-size: 21px;
    }

    .sv20-asset-modal-tabs {
        margin: 0 12px 12px 12px;
        width: calc(100% - 24px);
        overflow-x: auto;
    }

    .sv20-asset-modal-grid {
        padding: 0 12px 12px 12px;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
    }

    .sv20-asset-modal-empty {
        margin: 6px 12px 12px 12px;
        padding: 14px;
    }
}

/* 所有桌面尺寸統一使用彈性布局 */
@media (min-width: 768px) {
    .sv20-asset-library-controls {
        gap: 12px;
    }

    .sv20-asset-modal-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

/* ==========================================================================
   Text Generation Chat Interface (Apple-inspired UI/UX RWD)
   ========================================================================== */

.chat-shell {
    display: flex;
    height: calc(100vh - var(--header-height, 70px) - 40px);
    /* Fill available space */
    max-height: 850px;
    min-height: 500px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 24px;
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.08), 0 2px 12px rgba(0, 0, 0, 0.03);
    overflow: hidden;
    position: relative;
    margin-top: 1rem;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Sidebar */
.chat-sidebar {
    width: 280px;
    background: rgba(245, 245, 247, 0.6);
    border-right: 1px solid rgba(0, 0, 0, 0.06);
    display: flex;
    flex-direction: column;
    padding: 20px 16px;
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), opacity 0.3s ease;
    z-index: 10;
}

.chat-new-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 12px;
    background: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 12px;
    font-weight: 600;
    color: #1d1d1f;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
}

.chat-new-btn:hover {
    background: #fdfdfd;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.chat-new-btn:active {
    transform: translateY(0);
}

.chat-search-wrap {
    margin-top: 16px;
    position: relative;
}

.chat-search {
    width: 100%;
    padding: 10px 12px 10px 36px;
    border: none;
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.05);
    font-size: 14px;
    color: #1d1d1f;
    transition: background 0.2s ease, box-shadow 0.2s ease;
}

.chat-search:focus {
    outline: none;
    background: #ffffff;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.4);
}

.chat-search-wrap::before {
    content: 'search';
    font-family: 'Material Symbols Outlined';
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 18px;
    color: #86868b;
    pointer-events: none;
}

.chat-session-list {
    margin-top: 16px;
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    /* Smooth scrolling on iOS */
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* Hide scrollbar for sleek look */
.chat-session-list::-webkit-scrollbar {
    width: 4px;
}

.chat-session-list::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
}

.chat-session-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 12px;
    background: transparent;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    text-align: left;
    transition: background 0.2s ease;
}

.chat-session-item:hover {
    background: rgba(0, 0, 0, 0.04);
}

.chat-session-item.active {
    background: #ffffff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    font-weight: 500;
}

.chat-session-title {
    font-size: 14px;
    color: #1d1d1f;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 160px;
}

.chat-session-time {
    font-size: 12px;
    color: #86868b;
}

.chat-empty-list {
    text-align: center;
    color: #86868b;
    font-size: 13px;
    padding: 20px;
    display: none;
    /* Shown via JS when empty */
}

.chat-history-note {
    font-size: 11px;
    color: #86868b;
    text-align: center;
    margin-top: auto;
    padding-top: 16px;
}

/* Main Chat Area */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.4);
    position: relative;
    padding: 0;
}

.chat-main-header {
    padding: 16px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.chat-sidebar-toggle {
    background: transparent;
    border: none;
    color: #1d1d1f;
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.chat-sidebar-toggle:active {
    background: rgba(0, 0, 0, 0.05);
}

.chat-stage-title {
    font-size: 28px;
    font-weight: 600;
    color: #1d1d1f;
    text-align: center;
    margin-top: auto;
    margin-bottom: auto;
    letter-spacing: -0.5px;
}

.chat-stage-title span {
    background: linear-gradient(135deg, #3B82F6, #8B5CF6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.chat-composer-wrap {
    padding: 20px 24px 32px;
    background: transparent;
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
}

.chat-composer {
    background: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 20px;
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.chat-composer:focus-within {
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.12);
    border-color: rgba(59, 130, 246, 0.3);
}

.chat-attach {
    background: transparent;
    border: none;
    color: #86868b;
    padding: 4px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    transition: color 0.2s, background 0.2s;
    margin-bottom: 8px;
}

.chat-attach:hover {
    color: #1d1d1f;
    background: rgba(0, 0, 0, 0.04);
}

#textGenInput {
    width: 100%;
    border: none;
    resize: vertical;
    outline: none;
    font-family: inherit;
    font-size: 15px;
    line-height: 1.6;
    color: #1d1d1f;
    background: transparent;
    min-height: 56px;
    max-height: 320px;
    padding: 4px 4px;
    overflow-y: auto;
    /* Professional scrollbar */
    scrollbar-width: thin;
    scrollbar-color: rgba(148, 163, 184, 0.4) transparent;
}

#textGenInput::-webkit-scrollbar {
    width: 5px;
}

#textGenInput::-webkit-scrollbar-track {
    background: transparent;
}

#textGenInput::-webkit-scrollbar-thumb {
    background-color: rgba(148, 163, 184, 0.35);
    border-radius: 3px;
}

#textGenInput::-webkit-scrollbar-thumb:hover {
    background-color: rgba(148, 163, 184, 0.6);
}

#textGenInput:focus {
    scrollbar-color: rgba(99, 102, 241, 0.5) transparent;
}

#textGenInput::placeholder {
    color: #86868b;
}

.chat-composer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
}

.chat-model-pill {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(0, 0, 0, 0.04);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 500;
    color: #4b5563;
    cursor: pointer;
    transition: background 0.2s;
}

.chat-model-pill:hover {
    background: rgba(0, 0, 0, 0.08);
}

.chat-model-pill .material-symbols-outlined {
    font-size: 16px;
}

.chat-send {
    background: #3B82F6;
    color: white;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.chat-send:hover {
    background: #2563EB;
    transform: scale(1.05);
}

.chat-send:active {
    transform: scale(0.95);
}

.chat-send .material-symbols-outlined {
    font-size: 18px;
}

/* Chat Model Selector Dropdown */
@keyframes chatModelDropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chat-model-select-wrapper {
    position: relative;
}

.chat-model-dropdown {
    display: none;
    position: absolute;
    bottom: calc(100% + 12px);
    top: auto;
    left: 0;
    min-width: 280px;
    max-width: none;
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.12), 0 -2px 8px rgba(0, 0, 0, 0.08);
    z-index: 1000;
    overflow: visible;
    animation: chatModelDropdownFadeIn 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.chat-model-dropdown .model-option {
    padding: 12px 14px;
}

.chat-model-dropdown .model-option-name {
    font-size: 13px;
}

.chat-model-dropdown .model-option-desc {
    font-size: 11px;
}

.chat-model-pill {
    cursor: pointer;
    transition: all 0.2s ease;
}

.chat-model-pill:hover {
    background: rgba(0, 0, 0, 0.08);
}

.chat-model-select-wrapper.open .model-select-arrow {
    transform: rotate(180deg);
    transition: transform 0.2s ease;
}

.model-select-arrow {
    transition: transform 0.2s ease;
}

@media (max-width: 767px) {
    .chat-model-dropdown {
        position: absolute;
        left: 0;
        bottom: calc(100% + 10px);
        top: auto;
        transform: none;
        min-width: 260px;
        max-width: calc(100vw - 40px);
    }

    .chat-model-select-wrapper.open .chat-model-dropdown {
        transform: none;
    }
}

.chat-composer-hint {
    text-align: center;
    font-size: 11px;
    color: #86868b;
    margin-top: 12px;
}

/* Chat Thread (Future implementation placeholder) */
.chat-thread {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    -webkit-overflow-scrolling: touch;
}

/* ==========================================================================
   Apple-Device Responsive Design (RWD)
   ========================================================================== */

/* 桌面版 (≥992px) 專用樣式 */
@media (min-width: 992px) {

    /* 桌面版隱藏 chat-main-header */
    .chat-main-header {
        display: none;
    }

    /* 桌面版隱藏 feature-cards */
    .feature-cards {
        display: none !important;
    }
}

/* MacBook Air / Small Laptop (13-14 inch) */
@media (max-height: 950px) and (min-width: 992px) {
    .chat-shell {
        max-height: calc(100vh - var(--header-height, 70px) - 30px);
        margin-top: 0.5rem;
        border-radius: 20px;
    }

    /* Reduce padding for smaller screens */
    .chat-sidebar {
        padding: 16px 12px;
        width: 260px;
    }

    .chat-composer-wrap {
        padding: 16px 20px 24px;
    }

    .chat-main-header {
        padding: 12px 16px;
    }

    .chat-stage-title {
        font-size: 24px;
    }
}

/* iPad (Tablet) - 統一中斷點：991px 以下 chat-sidebar 改為抽屜模式 */
@media (max-width: 991px) {
    .chat-shell {
        height: calc(100vh - var(--header-height, 60px) - 20px);
        max-height: none;
        border-radius: 20px;
    }

    /* 991px 以下 chat-sidebar 變成抽屜模式 */
    .chat-sidebar {
        position: absolute;
        top: 0;
        left: 0;
        bottom: 0;
        width: 80%;
        max-width: 300px;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(30px);
        -webkit-backdrop-filter: blur(30px);
        transform: translateX(-100%);
        box-shadow: 4px 0 24px rgba(0, 0, 0, 0.1);
        z-index: 100;
        border-right: none;
    }

    .chat-sidebar.open {
        transform: translateX(0);
    }

    /* Overlay for chat sidebar */
    .chat-sidebar-overlay {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.2);
        z-index: 90;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }

    .chat-sidebar-overlay.open {
        opacity: 1;
        visibility: visible;
    }

    /* 顯示 chat-main-header (包含側邊欄 toggle) */
    .chat-main-header {
        display: flex;
        padding: 12px 16px;
    }

    .chat-composer-wrap {
        padding: 16px 20px 24px;
    }

    .chat-stage-title {
        font-size: 24px;
    }
}

/* iPhone (Mobile) */
@media (max-width: 767px) {
    .chat-shell {
        height: calc(100vh - var(--header-height, 56px) - 30px);
        margin-top: 0;
        border-radius: 16px;
        border: none;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    }

    /* Mobile Sidebar becomes an off-canvas drawer */
    .chat-sidebar {
        position: absolute;
        top: 0;
        left: 0;
        bottom: 0;
        width: 80%;
        max-width: 300px;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(30px);
        -webkit-backdrop-filter: blur(30px);
        transform: translateX(-100%);
        box-shadow: 4px 0 24px rgba(0, 0, 0, 0.1);
        z-index: 100;
        border-right: none;
    }

    .chat-sidebar.open {
        transform: translateX(0);
    }

    /* Overlay for mobile sidebar */
    .chat-sidebar-overlay {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.2);
        z-index: 90;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }

    .chat-sidebar-overlay.open {
        opacity: 1;
        visibility: visible;
    }

    .chat-main-header {
        display: flex;
        /* Shown on mobile */
    }

    .chat-composer-wrap {
        padding: 12px 16px calc(24px + env(safe-area-inset-bottom));
    }

    .chat-stage-title {
        font-size: 24px;
    }

    .chat-composer {
        border-radius: 16px;
        padding: 10px 12px;
    }

    #textGenInput {
        font-size: 16px;
        /* Prevents iOS auto-zoom on focus */
    }
}

/* Chat Model Dropdown Display Fix */
.chat-model-select-wrapper.open .chat-model-dropdown {
    display: block;
}

/* ============================================================
   3D 進階選項樣式最佳化 (Advanced Options UI/UX Enhancement)
   ============================================================ */

/* 進階選項容器 */
.advanced-options-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* 進階選項分組 */
.advanced-group {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
}

.advanced-group:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.08);
    transform: translateY(-2px);
}

/* 分組標題 */
.advanced-group-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: linear-gradient(135deg, rgba(248, 250, 252, 0.8) 0%, rgba(241, 245, 249, 0.8) 100%);
    border-bottom: 1px solid rgba(229, 231, 235, 0.5);
}

.group-icon {
    font-size: 22px;
    color: #6366f1;
    background: rgba(99, 102, 241, 0.1);
    padding: 8px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.group-title {
    font-size: 15px;
    font-weight: 700;
    color: #1e293b;
    letter-spacing: -0.01em;
}

/* 分組內容 */
.advanced-group-content {
    padding: 20px;
}

/* 表單欄位包裝器 */
.form-field-wrapper {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

/* 欄位資訊列 */
.field-info {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 2px;
    padding: 0 2px;
}

.field-hint,
.field-default {
    font-size: 11px;
    color: #9ca3af;
    padding: 2px 8px;
    background: #f3f4f6;
    border-radius: 6px;
}

/* 資訊提示氣泡 */
.info-tooltip {
    font-size: 16px !important;
    color: #9ca3af;
    cursor: help;
    transition: all 0.2s ease;
    user-select: none;
}

.info-tooltip:hover {
    color: #6366f1;
    transform: scale(1.1);
}

/* Tooltip 彈窗 */
.tooltip-popup {
    position: fixed;
    z-index: 9999;
    max-width: 280px;
    padding: 10px 14px;
    background: #1e293b;
    color: #f8fafc;
    font-size: 12px;
    line-height: 1.5;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: all 0.2s ease;
    pointer-events: none;
}

.tooltip-popup.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.tooltip-popup::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 20px;
    width: 12px;
    height: 12px;
    background: #1e293b;
    transform: rotate(45deg);
    border-radius: 2px;
}

.tooltip-popup.above::after {
    bottom: auto;
    top: -6px;
}

/* Toggle 容器 */
.toggles-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* 進階 Toggle 樣式 - 最佳化排版 */
.advanced-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 18px;
    background: rgba(249, 250, 251, 0.5);
    border: 1px solid rgba(229, 231, 235, 0.8);
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
    margin: 0;
    min-width: 0;
    /* 確保容器可以正確收縮 */
}

.advanced-toggle:hover {
    background: rgba(255, 255, 255, 0.9);
    border-color: #6366f1;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.05);
}

.toggle-content {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1 1 auto;
    /* 允許彈性成長和收縮 */
    min-width: 0;
    /* 關鍵：允許 flex 子項收縮低於內容寬度 */
}

.toggle-main {
    display: flex;
    align-items: baseline;
    /* 確保文字和徽章基線對齊 */
    flex-wrap: wrap;
    gap: 8px;
    min-width: 0;
    /* 允許收縮 */
    flex: 1;
    /* 佔用剩餘空間 */
}

.toggle-name {
    font-size: 13px;
    font-weight: 600;
    color: #374151;
    flex: 1 1 auto;
    /* 允許成長和收縮 */
    flex-shrink: 1;
    /* 關鍵修正：允許文字在空間不足時收縮 */
    min-width: 0;
    /* 允許低於內容寬度 */
    white-space: normal;
    /* 允許文字換行 */
    line-height: 1.4;
    /* 提升多行時的可讀性 */
    overflow-wrap: break-word;
    /* 長單字換行 */
    word-break: keep-all;
    /* 中文保持完整單詞 */
}

.toggle-default-badge {
    font-size: 10px;
    font-weight: 500;
    color: #6b7280;
    padding: 3px 8px;
    background: #e5e7eb;
    border-radius: 6px;
    flex-shrink: 0;
}

/* 修正原有的 Toggle 樣式衝突 - 統一使用 :after 確保覆蓋舊樣式 */
.toggle-switch {
    position: relative;
    display: inline-flex;
    align-items: center;
    width: 46px;
    height: 26px;
    flex-shrink: 0;
}

.toggle-switch input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: auto;
    cursor: pointer;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #d1d5db !important;
    transition: all 0.3s ease;
    border-radius: 26px !important;
    box-shadow: none !important;
    transform: none !important;
}

/* 清除舊的 :before 偽元素 */
.toggle-slider:before {
    content: none !important;
    display: none !important;
}

/* 使用 :after 統一偽元素，確保覆蓋舊樣式 */
.toggle-slider:after {
    position: absolute !important;
    content: "" !important;
    height: 20px !important;
    width: 20px !important;
    left: 3px !important;
    top: 50% !important;
    transform: translateY(-50%) !important;
    bottom: auto !important;
    background-color: white !important;
    transition: all 0.3s ease !important;
    border-radius: 50% !important;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15) !important;
}

/* 確保 checkbox checked 狀態能正確套用 */
.toggle-switch input[type="checkbox"]:checked+.toggle-slider {
    background-color: #6366f1 !important;
    background: #6366f1 !important;
}

.toggle-switch input[type="checkbox"]:checked+.toggle-slider:after {
    transform: translateY(-50%) translateX(20px) !important;
    left: 3px !important;
}

/* Select 下拉選項優化 */
.md-select-field select {
    font-size: 15px;
    padding: 12px 44px 12px 16px;
    /* 增加右側 padding 避免文字被下拉箭頭遮蔽 */
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    background-color: #ffffff;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 18px;
    white-space: normal;
    /* 允許文字必要時換行 */
}

.md-select-field select:hover {
    border-color: #6366f1;
    background-color: #f8fafc;
}

.md-select-field select:focus {
    border-color: #6366f1;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
    outline: none;
}

/* 響應式設計 */
@media (max-width: 991px) {
    .advanced-options-container {
        gap: 12px;
    }

    .advanced-group-header {
        padding: 12px 14px;
    }

    .advanced-group-content {
        padding: 14px;
    }

    .toggle-main {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .toggle-name {
        font-size: 12px;
    }

    .field-info {
        gap: 4px;
    }

    .field-hint,
    .field-default {
        font-size: 10px;
        padding: 2px 6px;
    }

    .tooltip-popup {
        max-width: 240px;
        font-size: 11px;
    }
}

@media (max-width: 767px) {
    .advanced-toggle {
        flex-direction: row;
        align-items: center;
        padding: 10px 12px;
        gap: 12px;
    }

    .toggle-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .group-title {
        font-size: 13px;
    }

    .group-icon {
        font-size: 18px;
    }
}