/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Dark Theme Colors (DramaKuku Style) */
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-card: #1a1a1a;
    --bg-card-hover: #252525;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #808080;
    --border-color: #2a2a2a;
    --accent: #e50914;
    --accent-hover: #f40612;
    --success: #46d369;
    --warning: #ffa500;

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

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.7);

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

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #f5f5f5;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f0f0f0;
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --text-muted: #808080;
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===== NAVIGATION ===== */
.navbar {
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.7) 100%);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: background-color var(--transition-normal);
}

[data-theme="light"] .navbar {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.9) 100%);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    gap: var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 800;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.logo:hover {
    transform: scale(1.05);
}

.logo-icon {
    font-size: 2rem;
}

.logo-text {
    color: var(--accent);
}

.nav-center {
    flex: 1;
    max-width: 600px;
}

.search-box {
    width: 100%;
}

.search-form {
    display: flex;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-fast);
}

[data-theme="light"] .search-form {
    background: rgba(0, 0, 0, 0.05);
    border-color: var(--border-color);
}

.search-form:focus-within {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--accent);
}

[data-theme="light"] .search-form:focus-within {
    background: rgba(0, 0, 0, 0.08);
}

.search-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 0.95rem;
    padding: var(--spacing-sm) var(--spacing-md);
    outline: none;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-btn {
    background: var(--accent);
    border: none;
    color: white;
    padding: 0 var(--spacing-md);
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-btn:hover {
    background: var(--accent-hover);
}

.nav-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.theme-toggle {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    position: relative;
}

[data-theme="light"] .theme-toggle {
    background: rgba(0, 0, 0, 0.05);
    border-color: var(--border-color);
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--accent);
}

[data-theme="light"] .theme-toggle:hover {
    background: rgba(0, 0, 0, 0.1);
}

.theme-toggle svg {
    position: absolute;
    transition: all var(--transition-normal);
}

.sun-icon {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
}

.moon-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

[data-theme="light"] .sun-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

[data-theme="light"] .moon-icon {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
}

/* ===== CATEGORY FILTER ===== */
.category-filter {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 73px;
    z-index: 999;
    transition: background-color var(--transition-normal);
}

.filter-scroll {
    display: flex;
    gap: var(--spacing-sm);
    overflow-x: auto;
    padding-bottom: var(--spacing-xs);
    scrollbar-width: none;
}

.filter-scroll::-webkit-scrollbar {
    display: none;
}

.filter-btn {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
    transition: var(--transition-fast);
    border: 1px solid transparent;
}

[data-theme="light"] .filter-btn {
    background: rgba(0, 0, 0, 0.05);
}

.filter-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
}

[data-theme="light"] .filter-btn:hover {
    background: rgba(0, 0, 0, 0.1);
}

.filter-btn.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* ===== MAIN CONTENT ===== */
.main-content {
    min-height: calc(100vh - 200px);
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

/* ===== VIDEO GRID ===== */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.video-card {
    background: transparent;
    border-radius: var(--radius-md);
    overflow: hidden;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition-normal);
    position: relative;
}

.video-card:hover {
    transform: scale(1.05);
    z-index: 10;
}

.video-poster {
    position: relative;
    padding-top: 150%;
    overflow: hidden;
    background: var(--bg-card);
    border-radius: var(--radius-md);
}

.video-poster img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.video-card:hover .video-poster img {
    transform: scale(1.1);
}

.no-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-weight: 600;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, transparent 50%);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

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

.play-icon {
    width: 50px;
    height: 50px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: white;
    transform: scale(0.8);
    transition: var(--transition-normal);
}

.video-card:hover .play-icon {
    transform: scale(1);
}

.category-badge {
    position: absolute;
    top: var(--spacing-xs);
    left: var(--spacing-xs);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 700;
    backdrop-filter: blur(10px);
}

[data-theme="light"] .category-badge {
    background: rgba(0, 0, 0, 0.7);
}

.video-info {
    padding: var(--spacing-sm) 0;
}

.video-title {
    font-size: 0.9rem;
    font-weight: 600;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.3;
}

/* ===== DETAIL PAGE ===== */
.detail-section {
    padding-bottom: var(--spacing-xl);
}

.detail-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.detail-poster {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.detail-poster img {
    width: 100%;
    display: block;
}

.detail-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    color: var(--accent);
}

.detail-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.detail-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.tag {
    background: rgba(255, 255, 255, 0.1);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

[data-theme="light"] .tag {
    background: rgba(0, 0, 0, 0.05);
}

/* ===== EPISODES GRID ===== */
.episodes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.episode-card {
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
    position: relative;
    font-weight: 700;
    font-size: 1.1rem;
}

[data-theme="light"] .episode-card {
    background: rgba(0, 0, 0, 0.05);
}

.episode-card:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

[data-theme="light"] .episode-card:hover {
    background: rgba(0, 0, 0, 0.1);
}

.episode-card.active {
    background: var(--accent);
    color: white;
}

.episode-number {
    font-weight: 700;
    font-size: 1rem;
}

.episode-title {
    display: none;
}

.episode-play {
    display: none;
}

/* ===== WATCH PAGE ===== */
.watch-section {
    padding: var(--spacing-xl) 0;
}

.watch-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.watch-title {
    font-size: 1.8rem;
    font-weight: 700;
}

.back-btn {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: var(--transition-fast);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

[data-theme="light"] .back-btn {
    background: rgba(0, 0, 0, 0.05);
    border-color: var(--border-color);
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--accent);
}

[data-theme="light"] .back-btn:hover {
    background: rgba(0, 0, 0, 0.1);
}

.video-container {
    background: #000;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

.video-container video {
    width: 100%;
    display: block;
    max-height: 80vh;
}

.video-error {
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--text-secondary);
}

.episode-nav {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.episode-nav-btn {
    background: var(--accent);
    color: white;
    text-decoration: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: var(--transition-fast);
    flex: 1;
    text-align: center;
}

.episode-nav-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-secondary);
    padding: var(--spacing-xl) 0;
    text-align: center;
    margin-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
    transition: background-color var(--transition-normal);
}

.footer p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

/* ===== NO RESULTS ===== */
.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

/* ===== LOADING INDICATOR ===== */
.loading-indicator {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto var(--spacing-md);
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .nav-content {
        flex-wrap: wrap;
    }

    .nav-center {
        order: 3;
        width: 100%;
        max-width: none;
    }

    .detail-content {
        grid-template-columns: 1fr;
    }

    .detail-poster {
        max-width: 300px;
        margin: 0 auto;
    }

    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: var(--spacing-sm);
    }

    .episodes-grid {
        grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
    }

    .episode-nav {
        flex-direction: column;
    }

    .section-title {
        font-size: 1.5rem;
    }
}