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

        body {
            font-family: 'Roboto', sans-serif;
            background: linear-gradient(135deg, #0f0f0f 0%, #1a1a1a 100%);
            color: #fff;
            min-height: 100vh;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .header {
            background: rgba(0, 0, 0, 0.8);
            backdrop-filter: blur(10px);
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid #333;
        }

        .header-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: bold;
            color: #ff0000;
        }

        .search-container {
            flex: 1;
            max-width: 600px;
            position: relative;
        }

        .search-box {
            width: 100%;
            padding: 12px 50px 12px 20px;
            border: 2px solid #333;
            border-radius: 25px;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 16px;
            outline: none;
            transition: all 0.3s ease;
        }

        .search-box:focus {
            border-color: #ff0000;
            background: rgba(255, 255, 255, 0.15);
        }

        .search-btn {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: #fff;
            font-size: 18px;
            cursor: pointer;
            transition: color 0.3s ease;
        }

        .search-btn:hover {
            color: #ff0000;
        }

        .nav-tabs {
            display: flex;
            gap: 30px;
            margin: 20px 0;
            border-bottom: 1px solid #333;
        }

        .nav-tab {
            padding: 10px 0;
            color: #aaa;
            cursor: pointer;
            font-weight: 500;
            border-bottom: 2px solid transparent;
            transition: all 0.3s ease;
        }

        .nav-tab.active {
            color: #fff;
            border-bottom-color: #ff0000;
        }

        .nav-tab:hover {
            color: #fff;
        }

        .content {
            padding: 20px 0;
        }

        .section {
            display: none;
        }

        .section.active {
            display: block;
        }

        .video-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 20px;
            margin-top: 20px;
        }

        .video-card {
            background: rgba(255, 255, 255, 0.05);
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
            cursor: pointer;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .video-card:hover {
            transform: translateY(-5px);
            background: rgba(255, 255, 255, 0.1);
            box-shadow: 0 10px 30px rgba(255, 0, 0, 0.2);
        }

        .video-thumbnail {
            position: relative;
            width: 100%;
            height: 180px;
            overflow: hidden;
        }

        .video-thumbnail img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

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

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

        .video-info {
            padding: 15px;
        }

        .video-title {
            font-size: 14px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .video-meta {
            color: #aaa;
            font-size: 12px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .video-author {
            font-weight: 500;
        }

        .video-stats {
            display: flex;
            gap: 10px;
        }

        .loading {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 200px;
            font-size: 18px;
            color: #aaa;
        }

        .spinner {
            border: 3px solid #333;
            border-top: 3px solid #ff0000;
            border-radius: 50%;
            width: 30px;
            height: 30px;
            animation: spin 1s linear infinite;
            margin-right: 10px;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .empty-state {
            text-align: center;
            padding: 60px 20px;
            color: #aaa;
        }

        .empty-state i {
            font-size: 64px;
            margin-bottom: 20px;
            color: #333;
        }

        .empty-state h3 {
            font-size: 24px;
            margin-bottom: 10px;
        }

        .video-actions {
            position: absolute;
            top: 8px;
            right: 8px;
            display: flex;
            gap: 8px;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

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

        .action-btn {
            background: rgba(0, 0, 0, 0.8);
            border: none;
            color: #fff;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            position: relative;
        }

        .action-btn:hover {
            background: #ff0000;
            transform: scale(1.1);
        }

        .action-btn.downloading {
            background: #4caf50;
            pointer-events: none;
        }

        .action-btn.downloading::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            border: 2px solid transparent;
            border-top: 2px solid #fff;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        .download-menu {
            position: absolute;
            top: 40px;
            right: 0;
            background: rgba(30, 30, 30, 0.95);
            backdrop-filter: blur(10px);
            border: 1px solid #444;
            border-radius: 8px;
            padding: 8px 0;
            min-width: 150px;
            display: none;
            z-index: 1000;
        }

        .download-menu.show {
            display: block;
        }

        .download-option {
            padding: 8px 16px;
            cursor: pointer;
            transition: background 0.3s ease;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
        }

        .download-option:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .download-option i {
            width: 16px;
        }

        .toast {
            position: fixed;
            bottom: 20px;
            right: 20px;
            background: #4caf50;
            color: white;
            padding: 12px 20px;
            border-radius: 8px;
            font-weight: 500;
            transform: translateX(400px);
            transition: transform 0.3s ease;
            z-index: 2000;
        }

        .toast.show {
            transform: translateX(0);
        }

        .toast.error {
            background: #f44336;
        }

        .player-modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.9);
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 3000;
        }

        .player-content {
            background: #1a1a1a;
            border-radius: 12px;
            padding: 20px;
            max-width: 90%;
            max-height: 90%;
            overflow: auto;
        }

        .player-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }

        .close-btn {
            background: none;
            border: none;
            color: #fff;
            font-size: 24px;
            cursor: pointer;
            padding: 5px;
        }

        .video-frame {
            width: 100%;
            max-width: 800px;
            height: 450px;
            border: none;
            border-radius: 8px;
        }

        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                gap: 15px;
            }

            .search-container {
                max-width: 100%;
            }

            .nav-tabs {
                gap: 20px;
                overflow-x: auto;
                padding-bottom: 10px;
            }

            .video-grid {
                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
                gap: 15px;
            }

            .video-frame {
                height: 250px;
            }
        }