/* Variables CSS para tema oscuro inspirado en YouTube/Twitch */
        :root {
            /* Colores principales */
            --bg-primary: #0f0f0f;
            --bg-secondary: #181818;
            --bg-tertiary: #212121;
            --bg-hover: #272727;
            
            /* Colores de texto */
            --text-primary: #ffffff;
            --text-secondary: #aaaaaa;
            --text-muted: #8b8b8b;
            
            /* Colores de acento */
            --accent-red: #ff0000;
            --accent-purple: #9147ff;
            --accent-blue: #3ea6ff;
            
            /* Sombras y bordes */
            --shadow-light: 0 2px 4px rgba(0, 0, 0, 0.1);
            --shadow-medium: 0 4px 8px rgba(0, 0, 0, 0.3);
            --shadow-heavy: 0 8px 16px rgba(0, 0, 0, 0.5);
            
            /* Espaciado */
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.5rem;
            --spacing-lg: 2rem;
            --spacing-xl: 3rem;
            
            /* Transiciones */
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
        }

        /* Reset y estilos base */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* Header y navegación */
        .header {
            background-color: var(--bg-secondary);
            padding: var(--spacing-sm) var(--spacing-lg);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            box-shadow: var(--shadow-medium);
            border-bottom: 1px solid var(--bg-tertiary);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1400px;
            margin: 0 auto;
        }

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

        .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(45deg, var(--accent-red), var(--accent-purple));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
        }

        .search-bar {
            flex: 1;
            max-width: 500px;
            margin: 0 var(--spacing-lg);
            position: relative;
        }

        .search-input {
            width: 100%;
            padding: 12px 16px;
            background-color: var(--bg-tertiary);
            border: 1px solid var(--bg-hover);
            border-radius: 24px;
            color: var(--text-primary);
            font-size: 14px;
            transition: var(--transition-fast);
        }

        .search-input:focus {
            outline: none;
            border-color: var(--accent-blue);
            box-shadow: 0 0 0 2px rgba(62, 166, 255, 0.2);
        }

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

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

        .nav-btn {
            background: none;
            border: none;
            color: var(--text-secondary);
            padding: 8px;
            border-radius: 50%;
            cursor: pointer;
            transition: var(--transition-fast);
        }

        .nav-btn:hover {
            background-color: var(--bg-hover);
            color: var(--text-primary);
        }

        /* Layout principal */
        .main-content {
            display: grid;
            grid-template-columns: 1fr 400px;
            gap: var(--spacing-lg);
            max-width: 1400px;
            margin: 80px auto 0;
            padding: var(--spacing-lg);
            min-height: calc(100vh - 80px);
        }

        /* Reproductor de video */
        .video-player-section {
            background-color: var(--bg-secondary);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-heavy);
        }

        .video-container {
            position: relative;
            width: 100%;
            height: 0;
            padding-bottom: 56.25%; /* 16:9 aspect ratio */
            background-color: #000;
        }

        .video-element {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: #000;
        }

        .video-controls {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
            padding: var(--spacing-md);
            opacity: 0;
            transition: var(--transition-normal);
        }

        .video-container:hover .video-controls {
            opacity: 1;
        }

        .controls-row {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-xs);
        }

        .control-btn {
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 8px;
            border-radius: 4px;
            transition: var(--transition-fast);
        }

        .control-btn:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }

        .progress-container {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .progress-bar {
            flex: 1;
            height: 4px;
            background-color: rgba(255, 255, 255, 0.3);
            border-radius: 2px;
            cursor: pointer;
            position: relative;
        }

        .progress-fill {
            height: 100%;
            background-color: var(--accent-red);
            border-radius: 2px;
            width: 0%;
            transition: var(--transition-fast);
        }

        .time-display {
            color: white;
            font-size: 12px;
            font-weight: 500;
            min-width: 100px;
        }

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

        .volume-slider {
            width: 80px;
            height: 4px;
            background-color: rgba(255, 255, 255, 0.3);
            border-radius: 2px;
            outline: none;
            cursor: pointer;
        }

        /* Información del video */
        .video-info {
            padding: var(--spacing-lg);
        }

        .video-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
            color: var(--text-primary);
        }

        .video-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            margin-bottom: var(--spacing-md);
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .video-description {
            color: var(--text-secondary);
            line-height: 1.6;
            margin-top: var(--spacing-md);
        }

        /* Sidebar de videos */
        .videos-sidebar {
            background-color: var(--bg-secondary);
            border-radius: 12px;
            padding: var(--spacing-md);
            box-shadow: var(--shadow-medium);
            height: fit-content;
        }

        .sidebar-title {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: var(--spacing-md);
            color: var(--text-primary);
        }

        .videos-grid {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .video-card {
            background-color: var(--bg-tertiary);
            border-radius: 8px;
            overflow: hidden;
            cursor: pointer;
            transition: var(--transition-normal);
            border: 2px solid transparent;
        }

        .video-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-medium);
            border-color: var(--accent-blue);
        }

        .video-card.active {
            border-color: var(--accent-purple);
            background-color: var(--bg-hover);
        }

        .video-thumbnail {
            position: relative;
            width: 100%;
            height: 0;
            padding-bottom: 56.25%; /* 16:9 aspect ratio */
            overflow: hidden;
        }

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

        .video-card:hover .thumbnail-img {
            transform: scale(1.05);
        }

        .video-duration {
            position: absolute;
            bottom: 8px;
            right: 8px;
            background-color: rgba(0, 0, 0, 0.8);
            color: white;
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
        }

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

        .video-card-title {
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: var(--spacing-xs);
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .video-card-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .channel-name {
            font-weight: 500;
        }

        /* Responsive Design */
        @media (max-width: 1024px) {
            .main-content {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
                padding: var(--spacing-md);
            }

            .videos-sidebar {
                order: -1;
            }

            .videos-grid {
                display: grid;
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
                gap: var(--spacing-md);
            }
        }

        @media (max-width: 768px) {
            .header {
                padding: var(--spacing-sm);
            }

            .nav-container {
                flex-wrap: wrap;
                gap: var(--spacing-sm);
            }

            .search-bar {
                order: 3;
                margin: 0;
                max-width: 100%;
            }

            .main-content {
                margin-top: 120px;
                padding: var(--spacing-sm);
            }

            .video-title {
                font-size: 1.2rem;
            }

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

            .control-btn {
                padding: 6px;
            }

            .volume-control {
                display: none;
            }
        }

        /* Animaciones */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .video-card {
            animation: fadeInUp 0.3s ease forwards;
        }

        .video-player-section {
            animation: fadeInUp 0.5s ease forwards;
        }

        /* Estados de carga */
        .loading {
            opacity: 0.7;
            pointer-events: none;
        }

        /* Scroll personalizado */
        ::-webkit-scrollbar {
            width: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-primary);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--bg-tertiary);
            border-radius: 4px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--bg-hover);
        }