/* CSS Variables - Theme Tokens */
:root {
    /* Light Theme */
    --background: #F7F5F2;
    --foreground: #1A1A1A;
    --muted: #E8E4DF;
    --muted-foreground: #6B6B6B;
    --card: #FFFFFF;
    --card-foreground: #1A1A1A;
    --border: #E0DCD7;
    --primary: #C4A77D;
    --primary-foreground: #1A1A1A;
    --accent: #8B7355;
    --accent-foreground: #FFFFFF;
    --radius: 0.5rem;

    /* Typography */
    --font-display: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
}

[data-theme="dark"] {
    --background: #0F0F0F;
    --foreground: #F5F5F5;
    --muted: #1F1F1F;
    --muted-foreground: #A0A0A0;
    --card: #1A1A1A;
    --card-foreground: #F5F5F5;
    --border: #2A2A2A;
    --primary: #D4B896;
    --primary-foreground: #0F0F0F;
    --accent: #A08B6F;
    --accent-foreground: #0F0F0F;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--background);
    color: var(--foreground);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background-color: var(--background);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px);
    transition: all var(--transition-normal);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

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

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--muted-foreground);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--foreground);
    transition: width var(--transition-fast);
}

.nav-link:hover {
    color: var(--foreground);
}

.nav-link:hover::after {
    width: 100%;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--foreground);
    transition: background-color var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--muted);
}

.icon-sun,
.icon-moon {
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

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

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

.lang-selector {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--foreground);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
}

.lang-btn:hover {
    background-color: var(--muted);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    padding: 0.5rem;
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

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

.lang-option {
    display: block;
    width: 100%;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    text-align: left;
    color: var(--foreground);
    border-radius: calc(var(--radius) / 2);
    transition: background-color var(--transition-fast);
}

.lang-option:hover {
    background-color: var(--muted);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 2rem 4rem;
    text-align: center;
    background: linear-gradient(180deg, var(--background) 0%, var(--muted) 100%);
}

.hero-content {
    max-width: 700px;
}

.hero-subtitle {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-style: italic;
    color: var(--muted-foreground);
    margin-bottom: 0.5rem;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--muted-foreground);
    line-height: 1.7;
    max-width: 540px;
    margin: 0 auto 2rem;
    text-wrap: balance;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    padding: 1rem 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--primary-foreground);
    background-color: var(--primary);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
}

.hero-cta:hover {
    background-color: var(--accent);
    color: var(--accent-foreground);
    transform: translateY(-2px);
}

/* Exhibitions Section */
.exhibitions {
    padding: 6rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 400;
    margin-bottom: 0.75rem;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--muted-foreground);
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--muted-foreground);
    border: 1px solid var(--border);
    border-radius: 2rem;
    transition: all var(--transition-fast);
}

.filter-tab:hover {
    color: var(--foreground);
    border-color: var(--foreground);
}

.filter-tab.active {
    color: var(--primary-foreground);
    background-color: var(--primary);
    border-color: var(--primary);
}

/* Gallery Grid */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.project-card {
    position: relative;
    background-color: var(--card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.project-card.hidden {
    display: none;
}

.project-image {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
}

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

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

.project-type-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background-color: var(--card);
    color: var(--card-foreground);
    border-radius: 2rem;
}

.project-content {
    padding: 1.5rem;
}

.project-title {
    font-family: var(--font-display);
    font-size: 1.375rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--card-foreground);
}

.project-description {
    font-size: 0.875rem;
    color: var(--muted-foreground);
    line-height: 1.6;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.project-author {
    font-size: 0.75rem;
    color: var(--muted-foreground);
}

.project-link {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--primary);
    transition: color var(--transition-fast);
}

.project-link:hover {
    color: var(--accent);
}

/* About Section */
.about {
    padding: 6rem 2rem;
    background-color: var(--muted);
}

.about-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.about-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 400;
    margin-bottom: 1.5rem;
}

.about-text {
    font-size: 1.125rem;
    color: var(--muted-foreground);
    line-height: 1.8;
    text-wrap: balance;
}

/* Footer */
.footer {
    padding: 2rem;
    text-align: center;
    border-top: 1px solid var(--border);
}

.footer p {
    font-size: 0.875rem;
    color: var(--muted-foreground);
}

/* Modals */
.modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal.open {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    position: relative;
    max-width: 100%;
    max-height: 100%;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

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

.modal-close {
    position: absolute;
    top: -3rem;
    right: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: background-color var(--transition-fast);
}

.modal-close:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Audio Player Modal */
.audio-player-modal {
    width: 100%;
    max-width: 400px;
    padding: 2.5rem;
    background-color: var(--card);
    border-radius: calc(var(--radius) * 2);
}

.audio-player {
    text-align: center;
}

.audio-cover {
    width: 200px;
    height: 200px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    color: var(--card);
    animation: spin 20s linear infinite paused;
}

.audio-cover.playing {
    animation-play-state: running;
}

.audio-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.audio-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--card-foreground);
}

.audio-artist {
    font-size: 0.875rem;
    color: var(--muted-foreground);
    margin-bottom: 1.5rem;
}

.audio-progress {
    margin-bottom: 1.5rem;
}

.progress-bar {
    position: relative;
    height: 4px;
    background-color: var(--muted);
    border-radius: 2px;
    margin-bottom: 0.5rem;
}

.progress-fill {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background-color: var(--primary);
    border-radius: 2px;
    width: 0%;
    transition: width 100ms linear;
}

.progress-input {
    position: absolute;
    top: -6px;
    left: 0;
    width: 100%;
    height: 16px;
    opacity: 0;
    cursor: pointer;
}

.time-display {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--muted-foreground);
}

.audio-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.control-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--card-foreground);
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.control-btn:hover {
    color: var(--primary);
    transform: scale(1.1);
}

.play-btn {
    width: 64px;
    height: 64px;
    background-color: var(--primary);
    color: var(--primary-foreground);
    border-radius: 50%;
}

.play-btn:hover {
    background-color: var(--accent);
    color: var(--accent-foreground);
}

.play-btn .icon-pause {
    display: none;
}

.play-btn.playing .icon-play {
    display: none;
}

.play-btn.playing .icon-pause {
    display: block;
}

.volume-control {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--muted-foreground);
}

.volume-slider {
    flex: 1;
    height: 4px;
    -webkit-appearance: none;
    background-color: var(--muted);
    border-radius: 2px;
    cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background-color: var(--primary);
    border-radius: 50%;
    cursor: pointer;
}

/* Image Lightbox Modal */
.image-modal {
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lightbox-image {
    max-width: 100%;
    max-height: 75vh;
    object-fit: contain;
    border-radius: var(--radius);
}

.lightbox-info {
    margin-top: 1.5rem;
    text-align: center;
    color: #fff;
}

.lightbox-info h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.lightbox-info p {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Project Detail Page */
.project-detail {
    padding-top: 5rem;
}

.project-hero {
    position: relative;
    height: 50vh;
    min-height: 400px;
    display: flex;
    align-items: flex-end;
    background-size: cover;
    background-position: center;
}

.project-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, var(--background), transparent);
}

.project-hero-content {
    position: relative;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.project-detail-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.project-detail-meta {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.meta-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted-foreground);
}

.meta-value {
    font-size: 0.875rem;
    font-weight: 500;
}

.project-detail-description {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--muted-foreground);
    margin-bottom: 2rem;
}

.project-detail-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-foreground);
    background-color: var(--primary);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
}

.project-detail-link:hover {
    background-color: var(--accent);
    color: var(--accent-foreground);
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        padding: 1rem;
    }

    .nav {
        display: none;
    }

    .hero {
        padding: 5rem 1.5rem 3rem;
    }

    .exhibitions {
        padding: 4rem 1.5rem;
    }

    .gallery {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .filter-tabs {
        gap: 0.5rem;
    }

    .filter-tab {
        padding: 0.5rem 1rem;
        font-size: 0.75rem;
    }

    .about {
        padding: 4rem 1.5rem;
    }

    .audio-player-modal {
        padding: 1.5rem;
        margin: 0 1rem;
    }

    .audio-cover {
        width: 160px;
        height: 160px;
    }
}