:root{--bg-color: #050505;--nav-bg: #0a0a0a;--text-color: #f8f9fa;--text-secondary: #9ca3af;--accent-color: #ff3e3e;--accent-gradient: linear-gradient(135deg, #ff3e3e, #ff0055);--border-color: rgba(255, 255, 255, .08);--hover-bg: rgba(255, 255, 255, .05);--card-bg: #111111;--glass-bg: rgba(15, 15, 15, .7);--transition: all .4s cubic-bezier(.23, 1, .32, 1);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 4px 20px rgba(0, 0, 0, .5);--shadow-lg: 0 10px 40px rgba(0, 0, 0, .7)}*{margin:0;padding:0;box-sizing:border-box;font-family:Outfit,Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}body{background-color:var(--bg-color);color:var(--text-color);display:flex;flex-direction:column;height:100vh;overflow:hidden;background-image:radial-gradient(at 0% 0%,rgba(255,62,62,.05) 0px,transparent 50%),radial-gradient(at 100% 100%,rgba(255,0,85,.05) 0px,transparent 50%)}header{display:flex;justify-content:space-between;align-items:center;padding:0 24px;height:64px;background-color:var(--glass-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:1000}.left-section,.right-section{display:flex;align-items:center;gap:16px}.middle-section{flex:1;display:flex;justify-content:center;max-width:720px;margin:0 32px}.menu-icon{font-size:22px;cursor:pointer;display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;transition:var(--transition);color:var(--text-secondary)}.menu-icon:hover{background-color:var(--hover-bg);color:var(--text-color)}.logo{font-size:22px;font-weight:700;cursor:pointer;display:flex;align-items:center;gap:8px;letter-spacing:-.5px;-webkit-user-select:none;user-select:none}.logo span{background:var(--accent-gradient);color:#fff;padding:4px 8px;border-radius:8px;font-size:14px;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 15px #ff3e3e66}.search-bar{display:flex;align-items:center;width:100%;position:relative}.search-wrapper{position:relative;flex:1;display:flex;align-items:center}.search-input{width:100%;height:44px;padding:0 48px 0 20px;border:1px solid var(--border-color);border-radius:12px;font-size:15px;outline:none;background-color:#ffffff08;color:var(--text-color);transition:var(--transition)}.search-input:focus{border-color:#ff3e3e80;background-color:#ffffff0d;box-shadow:0 0 0 4px #ff3e3e1a}.search-icon{position:absolute;right:16px;color:var(--text-secondary);pointer-events:none;font-size:18px}.search-btn{display:none}.profile-icon{width:40px;height:40px;border-radius:12px;background:var(--accent-gradient);color:#fff;display:flex;justify-content:center;align-items:center;font-weight:700;cursor:pointer;transition:var(--transition);box-shadow:0 4px 15px #ff3e3e4d}.profile-icon:hover{transform:translateY(-2px);box-shadow:0 8px 25px #ff3e3e80}.app-container{display:flex;flex:1;overflow:hidden}.sidebar{width:260px;background-color:var(--nav-bg);padding:16px 12px;border-right:1px solid var(--border-color);display:flex;flex-direction:column;overflow-y:auto;transition:var(--transition)}.sidebar.collapsed{width:84px}.menu-item{display:flex;align-items:center;padding:12px 16px;cursor:pointer;font-size:14px;font-weight:500;color:var(--text-secondary);gap:20px;border-radius:12px;margin-bottom:4px;transition:var(--transition)}.icon{font-size:20px;width:24px;display:flex;justify-content:center;transition:var(--transition)}.menu-item:hover{background-color:var(--hover-bg);color:var(--text-color)}.menu-item.active{background:#ff3e3e1a;color:var(--accent-color);font-weight:600}.sidebar.collapsed .menu-item{justify-content:center;padding:12px}.sidebar.collapsed .menu-item span{display:none}.divider{height:1px;background-color:var(--border-color);margin:16px 8px}.main-content{flex:1;padding:32px;overflow-y:auto;background-color:transparent;scroll-behavior:smooth}.filter-bar{display:flex;gap:10px;margin-bottom:32px;overflow-x:auto;padding-bottom:8px}.filter-bar::-webkit-scrollbar{display:none}.filter{padding:10px 20px;border-radius:10px;border:1px solid var(--border-color);background:#ffffff08;color:var(--text-secondary);cursor:pointer;font-size:14px;font-weight:500;transition:var(--transition);white-space:nowrap}.filter:hover{background:var(--hover-bg);color:var(--text-color);border-color:#fff3}.filter.active{background:var(--text-color);color:var(--bg-color);border-color:var(--text-color);box-shadow:0 4px 15px #fff3}.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px;row-gap:40px}.video-card{display:flex;flex-direction:column;cursor:pointer;transition:var(--transition);border-radius:16px;padding:8px;background:transparent;animation:slideUp .6s cubic-bezier(.23,1,.32,1) forwards}.video-card:hover{background-color:var(--hover-bg);transform:translateY(-8px)}.thumbnail-container{width:100%;aspect-ratio:16 / 9;overflow:hidden;border-radius:12px;background-color:#1a1a1a;margin-bottom:16px;position:relative;box-shadow:var(--shadow-md);transition:var(--transition)}.thumbnail{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.23,1,.32,1)}.video-card:hover .thumbnail{transform:scale(1.1)}.video-info{display:flex;gap:14px;padding:4px}.channel-avatar{width:40px;height:40px;border-radius:12px;background-color:#222;flex-shrink:0;object-fit:cover;border:1px solid var(--border-color)}.video-details{display:flex;flex-direction:column;gap:6px}.video-title{font-size:15px;font-weight:600;color:var(--text-color);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.channel-name{font-size:13px;color:var(--text-secondary);display:flex;align-items:center;gap:4px}.channel-name:hover{color:var(--text-color)}.verified{color:#3ea6ff;font-size:12px}.video-stats{font-size:13px;color:var(--text-secondary)}.progress-bar{position:absolute;bottom:0;left:0;height:4px;background:var(--accent-gradient);border-radius:0 2px 2px 0;box-shadow:0 0 10px #ff3e3e80}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:20px}::-webkit-scrollbar-thumb:hover{background:#fff3}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@media(max-width:1024px){.sidebar{width:84px}.sidebar .menu-item span{display:none}.sidebar .menu-item{justify-content:center}}@media(max-width:768px){header{padding:0 16px}.sidebar{display:none}.main-content{padding:20px}.video-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.middle-section{margin:0 16px}}@media(max-width:480px){.video-grid{grid-template-columns:1fr}.logo span{display:none}}.video-modal{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#000000e6;z-index:2000;display:none;opacity:0;transition:opacity .3s ease;overflow-y:auto;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.video-modal.active{display:flex;justify-content:center;opacity:1}.modal-content{width:100%;max-width:1200px;background-color:var(--bg-color);margin:40px 20px;border-radius:24px;position:relative;overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid var(--border-color);animation:modalSlideUp .5s cubic-bezier(.23,1,.32,1)}@keyframes modalSlideUp{0%{transform:translateY(100px);opacity:0}to{transform:translateY(0);opacity:1}}.close-modal{position:absolute;top:20px;right:20px;background:var(--hover-bg);border:none;color:#fff;width:40px;height:40px;border-radius:50%;cursor:pointer;z-index:10;display:flex;align-items:center;justify-content:center;transition:var(--transition)}.close-modal:hover{background:#fff3;transform:rotate(90deg)}.player-container{display:flex;flex-direction:column}.main-video{width:100%;aspect-ratio:16 / 9;background:#000;position:relative;cursor:pointer}.main-video img{width:100%;height:100%;object-fit:cover}.play-overlay{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#fff;opacity:.8;transition:var(--transition)}.main-video:hover .play-overlay{transform:translate(-50%,-50%) scale(1.2);opacity:1}.modal-video-details{padding:24px}.modal-video-details h2{font-size:20px;font-weight:700;margin-bottom:16px}.modal-video-meta{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px;margin-bottom:24px}.channel-info{display:flex;align-items:center;gap:12px}.channel-info img{width:40px;height:40px;border-radius:50%}.channel-info h4{font-size:16px;font-weight:600}.channel-info p{font-size:12px;color:var(--text-secondary)}.subscribe-btn{background:#fff;color:#000;border:none;padding:10px 20px;border-radius:20px;font-weight:600;cursor:pointer;margin-left:12px;transition:var(--transition)}.subscribe-btn:hover{background:#e5e5e5}.subscribe-btn.subscribed{background:var(--hover-bg);color:#fff}.video-actions{display:flex;gap:8px}.action-btn{background:var(--hover-bg);border:none;color:#fff;padding:8px 16px;border-radius:20px;display:flex;align-items:center;gap:8px;font-weight:500;cursor:pointer;transition:var(--transition)}.action-btn:hover{background:#ffffff26}.video-description{background:var(--hover-bg);padding:16px;border-radius:12px;margin-bottom:24px}.video-description p:first-child{font-weight:600;margin-bottom:8px}.comments-section h3{margin-bottom:20px}.add-comment{display:flex;gap:16px;margin-bottom:32px}.add-comment input{flex:1;background:transparent;border:none;border-bottom:1px solid var(--border-color);color:#fff;padding:8px 0;outline:none}.add-comment input:focus{border-bottom-color:#fff}.comment{display:flex;gap:16px;margin-bottom:24px}.comment-info h5{font-size:13px;margin-bottom:4px}.comment-info p{font-size:14px;color:var(--text-color)}@media(max-width:768px){.modal-content{margin:0;height:100%;border-radius:0}}.player-container{display:flex;flex-direction:row}.left-col{flex:2.5;border-right:1px solid var(--border-color)}.right-col{flex:1;padding:24px;max-height:80vh;overflow-y:auto}.right-col h3{font-size:16px;margin-bottom:16px;font-weight:600}.related-video-card{display:flex;gap:12px;margin-bottom:16px;cursor:pointer;transition:var(--transition);padding:4px;border-radius:8px}.related-video-card:hover{background:var(--hover-bg)}.related-thumb{width:120px;aspect-ratio:16 / 9;border-radius:8px;object-fit:cover}.related-info{display:flex;flex-direction:column;gap:4px}.related-info h4{font-size:13px;font-weight:600;line-height:1.2;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.related-info p{font-size:11px;color:var(--text-secondary)}@media(max-width:1024px){.player-container{flex-direction:column}.left-col{border-right:none;border-bottom:1px solid var(--border-color)}.right-col{width:100%}}[data-theme=light]{--bg-color: #f9f9f9;--nav-bg: #ffffff;--text-color: #0f0f0f;--text-secondary: #606060;--border-color: rgba(0, 0, 0, .1);--hover-bg: rgba(0, 0, 0, .05);--card-bg: #ffffff;--glass-bg: rgba(255, 255, 255, .8)}.theme-toggle{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:var(--transition);color:var(--text-secondary)}.theme-toggle:hover{background:var(--hover-bg);color:var(--text-color)}[data-theme=light] .sun-icon{display:none}[data-theme=light] .moon-icon{display:flex}.shorts-container{display:flex;flex-direction:column;align-items:center;gap:24px;padding:24px 0;height:calc(100vh - 80px);overflow-y:auto;scroll-snap-type:y mandatory}.short-video{position:relative;width:100%;max-width:400px;aspect-ratio:9 / 16;background:#000;border-radius:16px;overflow:hidden;scroll-snap-align:start;box-shadow:var(--shadow-lg)}.short-video img{width:100%;height:100%;object-fit:cover}.short-info{position:absolute;bottom:0;left:0;width:100%;padding:24px;background:linear-gradient(transparent,#000c);color:#fff}.short-info h3{font-size:16px;margin-bottom:4px}.short-info p{font-size:14px;opacity:.8}.short-actions{position:absolute;right:12px;bottom:100px;display:flex;flex-direction:column;gap:20px}.s-action{display:flex;flex-direction:column;align-items:center;gap:4px;cursor:pointer}.s-action span{font-size:12px;font-weight:500}.subscriptions-page,.library-page{padding:24px}.sub-header,.lib-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.sub-view-options{display:flex;gap:8px}.sub-view-options button{background:var(--hover-bg);border:none;color:var(--text-color);padding:6px 16px;border-radius:16px;cursor:pointer}.sub-view-options button.active{background:var(--text-color);color:var(--bg-color)}.shorts-page-wrapper{height:calc(100vh - 70px);overflow-y:auto;scroll-snap-type:y mandatory;display:flex;flex-direction:column;align-items:center;background-color:#000}.shorts-feed{width:100%;max-width:500px}.short-video-container{height:calc(100vh - 70px);width:100%;display:flex;justify-content:center;align-items:center;scroll-snap-align:start;padding:20px 0}.short-video-wrapper{position:relative;height:100%;aspect-ratio:9 / 16;background:#1a1a1a;border-radius:12px;overflow:hidden;box-shadow:0 20px 50px #00000080}.short-main-thumb{width:100%;height:100%;object-fit:cover}.short-overlay-content{position:absolute;bottom:0;left:0;width:100%;padding:24px;background:linear-gradient(transparent,#000000e6);z-index:2}.short-channel-row{display:flex;align-items:center;gap:12px;margin-bottom:12px}.short-avatar{width:36px;height:36px;border-radius:50%;border:2px solid white}.short-username{font-weight:600;font-size:15px;text-shadow:0 2px 4px rgba(0,0,0,.5)}.short-sub-btn{background:#fff;color:#000;border:none;padding:6px 16px;border-radius:18px;font-weight:600;font-size:13px;cursor:pointer;transition:var(--transition)}.short-sub-btn.subscribed{background:#fff3;color:#fff;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.short-caption{font-size:15px;font-weight:400;line-height:1.4;text-shadow:0 1px 2px rgba(0,0,0,.5)}.short-side-actions{position:absolute;right:12px;bottom:40px;display:flex;flex-direction:column;gap:16px;z-index:3}.short-action-item{display:flex;flex-direction:column;align-items:center;gap:6px}.action-circle{width:48px;height:48px;border-radius:50%;background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:none;color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:var(--transition)}.action-circle:hover{background:#fff3}.action-circle.active{color:var(--accent-color)}.short-action-item span{font-size:12px;font-weight:500;text-shadow:0 1px 3px rgba(0,0,0,.5)}@media(max-width:600px){.short-video-wrapper{width:100%;border-radius:0}}.home-container{padding:0 16px}.shorts-shelf{margin:32px 0;width:100%}.shelf-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.shelf-title{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:700}.shorts-horizontal-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px;margin-bottom:24px}.short-shelf-item{cursor:pointer;transition:var(--transition)}.short-shelf-item:hover .short-shelf-thumb img{transform:scale(1.05)}.short-shelf-thumb{width:100%;aspect-ratio:9 / 16;border-radius:12px;overflow:hidden;margin-bottom:8px}.short-shelf-thumb img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}.short-shelf-info h4{font-size:14px;font-weight:600;line-height:1.3;margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.short-shelf-info p{font-size:12px;color:var(--text-secondary)}.shelf-divider{height:4px;background:var(--hover-bg);margin-top:32px;border-radius:2px}.menu-item span{font-size:14px}.sidebar h4{padding:12px 24px 4px;font-size:16px;font-weight:600}