:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;padding:0;font-family:Arial,sans-serif;display:flex;justify-content:center;align-items:center;min-height:100vh;transition:background-color .3s,color .3s}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#1a3d2f}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#f6f6f6}a:hover{color:#747bff}}.dark-mode{background-color:#121212;color:#fff}.light-mode{background-color:#f6f6f6;color:#000}.toggle-btn-mode{position:absolute;display:flex;align-items:center;gap:8px;top:20px;right:20px;border:none;cursor:pointer;background-color:transparent}.dark-mode .toggle-btn-mode{color:#fff}.light-mode .toggle-btn-mode{color:#000}.video-page{display:flex;flex-direction:column;align-items:center;padding:20px;transition:background-color .3s,color .3s}.dark-mode .video-page{background-color:#121212;color:#fff}.light-mode .video-page{background-color:#f6f6f6;color:#000}.video-container{max-width:800px;width:100%;background-color:#fff;border-radius:8px;box-shadow:0 4px 6px #0000001a;padding:20px;margin-bottom:20px}.dark-mode .video-container{background-color:#1e1e1e;color:#fff}.light-mode .video-container{background-color:#fff;color:#000}.video-item{cursor:pointer;color:#1e90ff;text-decoration:underline;margin:10px 0}.light-mode .video-item{color:#0075e8}.video-item:hover{color:#005bb5}.video-page{display:flex;flex-direction:column;align-items:center;padding:20px;background-color:#f9f9f9;font-family:Arial,sans-serif}.error{color:#d9534f;font-weight:700;margin-bottom:20px}.info{color:#45ae7d;font-weight:700;margin-bottom:20px}.light-mode .info{color:#2d5c46}.video-container{max-width:800px;width:100%;background:#fff;border-radius:8px;box-shadow:0 4px 6px #0000001a;padding:20px;margin-bottom:20px}.video-title{font-size:24px;font-weight:700;margin-bottom:10px}#video-player{width:100%;border:none;border-radius:8px;margin-bottom:20px}.video-info{font-size:16px;line-height:1.5}.thumbnails{margin-top:10px}.thumbnail{max-width:100px;border-radius:4px}.pagination-buttons{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;width:100%}.pagination-buttons .button{display:flex;align-items:center}.button{padding:10px 20px;font-size:16px;border:none;border-radius:4px;background-color:#2d5c46;color:#fff;cursor:pointer;transition:background-color .3s}.button:disabled{background-color:#ccc;cursor:not-allowed}.button:hover:not(:disabled){background-color:#1a3d2f}.scroll-button{margin-left:auto;flex-shrink:0}@media (max-width: 420px){.scroll-button{margin-top:20px;margin-left:0;text-align:center}}