*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary: #0f0f0f;--bg-secondary: #1a1a1a;--bg-hover: #272727;--bg-card: #1e1e1e;--text-primary: #f1f1f1;--text-secondary: #aaa;--text-muted: #717171;--accent: #ff0000;--accent-hover: #cc0000;--border: #3f3f3f;--sidebar-width: 240px;--header-height: 56px;--bottom-nav-height: 0px}@media (max-width: 767px){:root{--bottom-nav-height: 56px}}body{font-family:Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;overflow-x:hidden}a{color:inherit;text-decoration:none}button{cursor:pointer;border:none;background:none;font-family:inherit;color:inherit}input,textarea,select{font-family:inherit}@media (max-width: 767px){input,textarea,select{font-size:16px!important}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#555;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#777}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:20px;font-size:14px;font-weight:500;transition:all .15s;cursor:pointer;white-space:nowrap}.btn-primary{background:var(--text-primary);color:#0f0f0f}.btn-primary:hover{background:#ccc}.btn-ghost{background:var(--bg-hover);color:var(--text-primary)}.btn-ghost:hover{background:#3f3f3f}.btn-red{background:var(--accent);color:#fff}.btn-red:hover{background:var(--accent-hover)}.btn-subscribed{background:var(--bg-hover);color:var(--text-primary)}.btn-subscribed:hover{background:#3f3f3f}.avatar{border-radius:50%;object-fit:cover;background:#333;flex-shrink:0}.avatar-placeholder{border-radius:50%;background:#444;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;flex-shrink:0}.chip{display:inline-flex;align-items:center;padding:6px 12px;border-radius:8px;font-size:14px;font-weight:500;background:var(--bg-hover);cursor:pointer;white-space:nowrap;transition:background .15s;border:none}.chip:hover{background:#3f3f3f}.chip.active{background:var(--text-primary);color:#0f0f0f}.spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.skeleton{background:linear-gradient(90deg,#1e1e1e 25%,#2a2a2a 50%,#1e1e1e 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:4px}@keyframes shimmer{to{background-position:-200% 0}}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(0,0,0,.85);display:flex;align-items:center;justify-content:center;z-index:1000;padding:16px}.modal{background:#212121;border-radius:12px;padding:24px;width:100%;max-width:520px;max-height:90vh;overflow-y:auto}.modal h2{font-size:20px;margin-bottom:20px}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:13px;color:var(--text-secondary);margin-bottom:6px}.form-input{width:100%;background:var(--bg-hover);border:1px solid var(--border);border-radius:4px;padding:10px 12px;color:var(--text-primary);font-size:14px;transition:border-color .15s}.form-input:focus{outline:none;border-color:#3ea6ff}textarea.form-input{resize:vertical;min-height:80px}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 20px;color:var(--text-muted);gap:12px;text-align:center}.empty-state svg{opacity:.3}.empty-state p{font-size:16px}.bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;height:var(--bottom-nav-height);background:var(--bg-primary);border-top:1px solid var(--border);z-index:100}@media (max-width: 767px){.bottom-nav{display:flex}}.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px 16px}@media (max-width: 767px){.video-grid{grid-template-columns:1fr 1fr;gap:12px 8px}}@media (max-width: 480px){.video-grid{grid-template-columns:1fr;gap:16px}}.search-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--bg-primary);z-index:200;display:flex;flex-direction:column;padding:8px 12px}