/* ================================
   CSS Variables & Theme
   ================================ */
:root {
    /* Base Colors - Light Mode */
    --bg-primary: #fafafa;
    --bg-secondary: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border-color: #e8e8e8;
    --shadow-color: rgba(0, 0, 0, 0.08);
    --modal-overlay: rgba(0, 0, 0, 0.5);

    /* Season Colors - Spring Default */
    --season-primary: #f8b4c4;
    --season-secondary: #a8e6cf;
    --season-accent: #ffd3b6;
    --season-gradient: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;

    /* Typography */
    --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.75rem;
    --font-size-2xl: 2.5rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 50px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --text-primary: #f0f0f0;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    --border-color: #333333;
    --shadow-color: rgba(0, 0, 0, 0.4);
    --modal-overlay: rgba(0, 0, 0, 0.8);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
}

/* Season Themes */
[data-season="spring"] {
    --season-primary: #f8b4c4;
    --season-secondary: #a8e6cf;
    --season-accent: #ffd3b6;
    --season-gradient: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    --season-bg: linear-gradient(180deg, #fff5f8 0%, #ffeef2 50%, #fff0f5 100%);
}

[data-theme="dark"][data-season="spring"] {
    --season-bg: linear-gradient(180deg, #2d1f22 0%, #1e1e1e 100%);
    --season-primary: #e08da0;
}

[data-season="summer"] {
    --season-primary: #74b9ff;
    --season-secondary: #ffeaa7;
    --season-accent: #81ecec;
    --season-gradient: linear-gradient(135deg, #a1c4fd 0%, #c2e9fb 100%);
    --season-bg: linear-gradient(180deg, #e8f4fc 0%, #dbeeff 50%, #e0f7fa 100%);
}

[data-theme="dark"][data-season="summer"] {
    --season-bg: linear-gradient(180deg, #1f282d 0%, #1e1e1e 100%);
    --season-primary: #5ca0e5;
}

[data-season="autumn"] {
    --season-primary: #d4a574;
    --season-secondary: #c17f59;
    --season-accent: #e8c39e;
    --season-gradient: linear-gradient(135deg, #f5af19 0%, #f12711 100%);
    --season-bg: linear-gradient(180deg, #fff8f0 0%, #ffeee0 50%, #fff5e6 100%);
}

[data-theme="dark"][data-season="autumn"] {
    --season-bg: linear-gradient(180deg, #2d241f 0%, #1e1e1e 100%);
    --season-primary: #ba8d5f;
}

[data-season="winter"] {
    --season-primary: #636e72;
    --season-secondary: #b33939;
    --season-accent: #dfe6e9;
    --season-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --season-bg: linear-gradient(180deg, #f0f2f8 0%, #e8ecf5 50%, #eef1f9 100%);
}

[data-theme="dark"][data-season="winter"] {
    --season-bg: linear-gradient(180deg, #1f2025 0%, #1e1e1e 100%);
    --season-primary: #8a9498;
}

/* ================================
   Reset & Base Styles
   ================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--season-bg, var(--bg-primary));
    min-height: 100vh;
    transition: background var(--transition-slow), color var(--transition-base);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ================================
   Header & Navigation
   ================================ */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(var(--bg-secondary-rgb), 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: var(--space-sm) 0;
}

/* Hack for RGBA variable which css variables don't support directly usually without components */
[data-theme="light"] .header {
    background: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .header {
    background: rgba(30, 30, 30, 0.95);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.logo-icon {
    font-size: 1.5rem;
    color: var(--season-primary);
    transition: color var(--transition-base);
}

.logo-text {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.season-nav {
    display: flex;
    gap: var(--space-xs);
}

.season-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    border: 2px solid transparent;
    border-radius: var(--radius-full);
    background: var(--bg-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: inherit;
    color: var(--text-primary);
}

.season-btn:hover {
    background: var(--season-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.season-btn.active {
    background: var(--season-primary);
    color: white;
    border-color: var(--season-primary);
}

.season-icon {
    font-size: 1.1rem;
}

.season-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* Dark Mode Toggle */
.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.theme-toggle:hover {
    border-color: var(--season-primary);
}

.theme-icon {
    font-size: 1.2rem;
    line-height: 1;
}

[data-theme="light"] .theme-icon.dark {
    display: none;
}

[data-theme="dark"] .theme-icon.light {
    display: none;
}

/* ================================
   Main Content
   ================================ */
.main {
    padding: var(--space-xl) 0;
    min-height: calc(100vh - 200px);
}

/* Season Header */
.season-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.season-title {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    position: relative;
    display: inline-block;
}

.season-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--season-gradient);
    border-radius: 2px;
}

.season-desc {
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
    font-weight: 300;
    margin-top: var(--space-sm);
}

/* ================================
   Weekly Recommend Module
   ================================ */
.weekly-recommend {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-xl);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    border: 1px solid var(--border-color);
}

.recommend-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--season-gradient);
    color: white;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    z-index: 10;
}

.recommend-content {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.recommend-image {
    width: 150px;
    height: 150px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.recommend-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.recommend-info {
    flex: 1;
}

.recommend-title {
    font-size: var(--font-size-xl);
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.recommend-desc {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.recommend-btn {
    background: var(--text-primary);
    color: var(--bg-secondary);
    border: none;
    padding: 10px 24px;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-base);
}

.recommend-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: var(--season-primary);
    color: white;
}

/* ================================
   Filter Section
   ================================ */
.filter-section {
    margin-bottom: var(--space-lg);
}

.filter-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.filter-tag {
    padding: 10px 24px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-base);
}

.filter-tag:hover {
    border-color: var(--season-primary);
    color: var(--season-primary);
}

.filter-tag.active {
    background: var(--text-primary);
    color: var(--bg-secondary);
    border-color: var(--text-primary);
}

.favorite-filter {
    color: #ff6b6b;
    border-color: #ffe3e3;
    display: flex;
    align-items: center;
    gap: 6px;
}

.favorite-filter:hover,
.favorite-filter.active {
    background: #ff6b6b;
    color: white;
    border-color: #ff6b6b;
}

/* ================================
   Gallery Grid
   ================================ */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
}

/* Outfit Card */
.outfit-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.5s ease forwards;
    cursor: pointer;
    border: 1px solid var(--border-color);
}

.outfit-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--season-primary);
}

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

.outfit-card:nth-child(1) {
    animation-delay: 0.1s;
}

.outfit-card:nth-child(2) {
    animation-delay: 0.2s;
}

.outfit-card:nth-child(3) {
    animation-delay: 0.3s;
}

.outfit-card:nth-child(4) {
    animation-delay: 0.4s;
}

.card-image {
    position: relative;
    width: 100%;
    aspect-ratio: 3 / 4;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.outfit-card:hover .card-image img {
    transform: scale(1.05);
}

.card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-md);
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.outfit-card:hover .card-overlay {
    opacity: 1;
}

.card-content {
    padding: var(--space-md);
}

.card-title {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.card-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: var(--space-sm);
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.card-tag {
    padding: 4px 12px;
    background: var(--bg-primary);
    border-radius: var(--radius-full);
    font-size: 12px;
    color: var(--text-muted);
}

.card-tag.occasion {
    background: var(--season-primary);
    color: white;
}

/* ================================
   Skeleton Loading
   ================================ */
.skeleton-gallery {
    display: none;
}

.skeleton-gallery.active {
    display: grid;
}

.skeleton-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.skeleton-image {
    width: 100%;
    aspect-ratio: 3 / 4;
    background: var(--border-color);
    animation: pulse 1.5s infinite;
}

.skeleton-content {
    padding: var(--space-md);
}

.skeleton-title {
    height: 20px;
    width: 70%;
    background: var(--border-color);
    margin-bottom: 10px;
    border-radius: 4px;
    animation: pulse 1.5s infinite;
}

.skeleton-desc {
    height: 14px;
    width: 90%;
    background: var(--border-color);
    margin-bottom: 6px;
    border-radius: 4px;
    animation: pulse 1.5s infinite;
}

.skeleton-tags {
    height: 24px;
    width: 50%;
    background: var(--border-color);
    margin-top: 10px;
    border-radius: 12px;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        opacity: 0.6;
    }

    50% {
        opacity: 0.3;
    }

    100% {
        opacity: 0.6;
    }
}

/* ================================
   Modal Window
   ================================ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--modal-overlay);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    backdrop-filter: blur(5px);
}

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

.modal-content {
    background: var(--bg-secondary);
    width: 90%;
    max-width: 900px;
    max-height: 90vh;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow-y: auto;
    transform: scale(0.95);
    transition: transform var(--transition-base);
    display: flex;
    flex-wrap: wrap;
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 2rem;
    color: white;
    background: rgba(0, 0, 0, 0.3);
    border: none;
    cursor: pointer;
    z-index: 10;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.6);
}

.modal-body {
    display: flex;
    width: 100%;
}

.modal-image {
    flex: 1;
    min-width: 300px;
}

.modal-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.modal-info {
    flex: 1;
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    min-width: 300px;
}

.modal-title {
    font-size: var(--font-size-xl);
    color: var(--text-primary);
}

.modal-desc {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    line-height: 1.6;
}

.color-palette {
    margin: var(--space-sm) 0;
}

.palette-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: 8px;
    display: block;
}

.color-dots {
    display: flex;
    gap: 8px;
}

.color-dot {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
}

.item-list h3,
.styling-tips h3 {
    font-size: var(--font-size-base);
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.item-list ul {
    list-style: none;
    padding-left: 0;
}

.item-list li {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: 6px;
    padding-left: 14px;
    position: relative;
}

.item-list li::before {
    content: '•';
    color: var(--season-primary);
    position: absolute;
    left: 0;
}

.favorite-btn {
    margin-top: auto;
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
}

.favorite-btn:hover {
    border-color: #ff6b6b;
    color: #ff6b6b;
}

.favorite-btn.active {
    background: #ff6b6b;
    color: white;
    border-color: #ff6b6b;
}

/* ================================
   Empty State
   ================================ */
.empty-state {
    text-align: center;
    padding: var(--space-xl);
    color: var(--text-muted);
}

.empty-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

/* ================================
   Footer
   ================================ */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-lg) 0;
    text-align: center;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* ================================
   Music Control Button
   ================================ */
.music-control {
    position: fixed;
    left: 20px;
    bottom: 20px;
    z-index: 900;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: rgba(var(--bg-secondary-rgb), 0.85);
    /* fallback */
    background: var(--bg-secondary);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    font-family: inherit;
    transition: all var(--transition-base);
    color: var(--text-primary);
}

.music-control:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.music-icon {
    font-size: 1.2rem;
    color: var(--season-primary);
}

/* ================================
   Responsive Design
   ================================ */
@media (max-width: 768px) {
    .header .container {
        justify-content: center;
    }

    .logo {
        width: 100%;
        justify-content: center;
        margin-bottom: var(--space-xs);
    }

    .season-nav {
        width: 100%;
        justify-content: center;
    }

    .weekly-recommend {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }

    .recommend-image {
        width: 100%;
        height: 200px;
    }

    .modal-content {
        width: 95%;
        height: 95vh;
        flex-direction: column;
        overflow-y: scroll;
    }

    .modal-image {
        min-height: 250px;
    }

    .modal-info {
        padding: var(--space-md);
    }

    .modal-close {
        top: 10px;
        right: 10px;
    }
}