:root {

    --color-bg-base: #000000;
    --color-bg-elevated: #0a0a0b;
    --color-bg-card: #121214;
    --color-primary: #8b5cf6;
    --color-primary-hover: #7c3aed;
    --color-primary-glow: rgba(139, 92, 246, 0.4);
    --color-text-primary: #ffffff;
    --color-text-secondary: #a1a1aa;
    --color-text-muted: #71717a;

    --border-subtle: 1px solid rgba(255, 255, 255, 0.08);
    --border-medium: 1px solid rgba(255, 255, 255, 0.12);
    --glass-bg: rgba(18, 18, 20, 0.8);
    --glass-border: rgba(255, 255, 255, 0.1);

    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.25rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 8px 32px var(--color-primary-glow);

    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 350ms cubic-bezier(0.4, 0, 0.2, 1);

    --plyr-color-main: var(--color-primary);
    --plyr-video-control-color: var(--color-text-primary);
    --plyr-video-control-background-hover: rgba(255, 255, 255, 0.12);
    --plyr-menu-background: rgba(18, 18, 20, 0.95);
    --plyr-menu-color: var(--color-text-primary);
    --plyr-menu-border-color: var(--glass-border);
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    margin: 0;
    background-color: var(--color-bg-base);
    color: var(--color-text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.ui-scale {
    transform: scale(0.90);
    transform-origin: top center;
}

.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.8) 0%, transparent 100%);
    z-index: 1000;
    pointer-events: none;
}

.back-btn {
    pointer-events: auto;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.7rem 1.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    color: var(--color-text-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-smooth);
    box-shadow: var(--shadow-sm);
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.watch-container {
    max-width: 1800px;
    margin: 0 auto;
    padding: 1rem var(--spacing-xl) var(--spacing-xl);
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: var(--spacing-xl);
    align-items: start;
}

.watch-container.sidebar-hidden {
    grid-template-columns: 1fr;
}

.player-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.player-toolbar {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.control-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.sd-toggle {
    display: flex;
    background: var(--color-bg-elevated);
    border: var(--border-subtle);
    border-radius: var(--radius-full);
    padding: 4px;
    position: relative;
    cursor: pointer;
}

.sd-option {
    padding: 0.6rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-text-muted);
    z-index: 2;
    transition: color var(--transition-base);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
}

.sd-option.active {
    color: var(--color-text-primary);
}

.sd-bg {
    position: absolute;
    top: 4px;
    left: 4px;
    bottom: 4px;
    width: calc(50% - 4px);
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition: transform var(--transition-smooth);
    box-shadow: 0 4px 12px var(--color-primary-glow);
    z-index: 1;
}

.sd-toggle[data-state="dub"] .sd-bg {
    transform: translateX(100%);
}

.source-select {
    appearance: none;
    background-color: var(--color-bg-elevated);
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1.2rem center;
    border: var(--border-subtle);
    color: var(--color-text-primary);
    padding: 0.7rem 2.8rem 0.7rem 1.2rem;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    min-width: 160px;
    transition: all var(--transition-base);
}

.source-select:hover {
    border-color: var(--color-primary);
    background-color: var(--color-bg-card);
}

.source-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.toggle-episodes-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--color-bg-elevated);
    border: var(--border-subtle);
    color: var(--color-text-primary);
    padding: 0.7rem 1.2rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    margin-left: auto;
}

.toggle-episodes-btn:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.toggle-episodes-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.video-container {
    aspect-ratio: 16/9;
    background: var(--color-bg-base);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg), 0 0 0 1px var(--glass-border);
    position: relative;
    transition: box-shadow var(--transition-smooth);
}

.video-container:hover {
    box-shadow: var(--shadow-lg), 0 0 0 1px var(--color-primary), var(--shadow-glow);
}

#player {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.loading-overlay {
    position: absolute;
    inset: 0;
    background: var(--color-bg-base);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 20;
    gap: var(--spacing-lg);
}

.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-overlay p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

.episode-controls {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.episode-info h1 {
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1.2;
    margin: 0 0 var(--spacing-xs);
    color: var(--color-text-primary);
}

.episode-info p {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 0;
}

.navigation-buttons {
    display: flex;
    gap: var(--spacing-md);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--color-bg-elevated);
    border: var(--border-subtle);
    color: var(--color-text-primary);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.nav-btn:hover:not(:disabled) {
    background: var(--color-primary);
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.episodes-sidebar {
    position: sticky;
    top: 6rem;
    height: calc(100vh - 7rem);
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
}

.watch-container.sidebar-hidden > .episodes-sidebar {
    display: none;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--glass-border);
}

.sidebar-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin: 0;
}

.close-sidebar-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-base);
    padding: 0;
    align-items: center;
    justify-content: center;
}

.close-sidebar-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-text-primary);
}

.sidebar-search {
    margin-bottom: var(--spacing-md);
}

.episode-search-input {
    width: 100%;
    appearance: none;
    background-color: var(--color-bg-elevated);
    border: var(--border-subtle);
    color: var(--color-text-primary);
    padding: 0.75rem 1.2rem;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-base);
}

.episode-search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}

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

.episode-list {
    flex: 1;
    overflow-y: auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
    gap: var(--spacing-sm);
    padding: var(--spacing-xs);
    align-content: start;
}

.episode-list::-webkit-scrollbar {
    width: 6px;
}

.episode-list::-webkit-scrollbar-track {
    background: transparent;
}

.episode-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
}

.episode-list::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

.episode-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-elevated);
    border: var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 0.85rem;
    color: var(--color-text-primary);
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    aspect-ratio: 1;
    min-height: 52px;
}

.episode-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-primary);
    transform: scale(1.05);
}

.episode-btn.active-ep {
    background: var(--color-primary);
    color: var(--color-text-primary);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
    font-weight: 800;
    position: relative;
}

.episode-btn.active-ep::after {
    content: '';
    position: absolute;
    inset: -2px;
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    opacity: 0.5;
}

.anime-details {
    max-width: 1800px;
    margin: var(--spacing-2xl) auto;
    padding: 0 var(--spacing-xl) 1rem;
}

.details-container {
    display: flex;
    gap: var(--spacing-xl);
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.details-cover {
    flex-shrink: 0;
}

.cover-image {
    width: 220px;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.details-content h2 {
    font-size: 2rem;
    font-weight: 800;
    margin: 0 0 var(--spacing-md);
    color: var(--color-text-primary);
}

.details-meta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.meta-badge {
    background: rgba(139, 92, 246, 0.12);
    color: var(--color-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.meta-badge.meta-score {
    background: var(--color-primary);
    color: var(--color-text-primary);
    border-color: var(--color-primary);
}

.details-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin: 0;
}

.plyr--video {
    border-radius: var(--radius-xl);
}

.plyr__controls {
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.5) 50%, transparent 100%) !important;
    padding: 1rem 1.5rem 1.5rem !important;
    border-radius: 0 0 var(--radius-xl) var(--radius-xl) !important;
}

.plyr--full-ui input[type=range] {
    color: var(--color-primary);
}

.plyr__control:hover {
    background: rgba(255, 255, 255, 0.12) !important;
}

.plyr__menu__container {
    background: var(--glass-bg) !important;
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md) !important;
    box-shadow: var(--shadow-lg) !important;
}

@media (max-width: 1100px) {
    .watch-container {
        grid-template-columns: 1fr;
        padding-top: 5rem;
    }

    .episodes-sidebar {
        position: fixed;
        top: 5rem;
        right: 0;
        left: 0;
        width: auto;
        height: auto;
        max-height: 80vh;
        margin: 0 1rem;
        z-index: 999;
        display: none;
    }

    .episodes-sidebar.sidebar-open {
        display: flex;
    }

    .close-sidebar-btn {
        display: flex;
    }

    .episode-list {
        grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    }
}

@media (max-width: 768px) {
    .watch-container {
        padding: 4.5rem 1rem 1rem;
    }

    .anime-details {
        padding: 0 1rem var(--spacing-xl);
    }

    .details-container {
        flex-direction: column;
        text-align: center;
    }

    .cover-image {
        width: 180px;
        margin: 0 auto;
    }

    .player-toolbar {
        justify-content: center;
    }

    .episode-controls {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .navigation-buttons {
        width: 100%;
        justify-content: center;
    }

    .nav-btn {
        flex: 1;
        justify-content: center;
    }

    .episodes-sidebar {
        margin: 0 0.5rem;
        padding: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .episode-info h1 {
        font-size: 1.25rem;
    }

    .details-content h2 {
        font-size: 1.5rem;
    }

    .nav-btn span {
        display: none;
    }
}