:root{font-family:system-ui,-apple-system,Segoe UI,sans-serif;color:#172033;background:#f5f7fb}
*{box-sizing:border-box}body{margin:0}.topbar{background:#172033;color:white;padding:18px 24px;display:flex;justify-content:space-between;align-items:center;gap:20px}.topbar h1{margin:0;font-size:24px}.topbar p{margin:4px 0 0;opacity:.75}.admin-link{color:white;text-decoration:none;background:#33415f;padding:9px 13px;border-radius:8px}
main{max-width:1100px;margin:0 auto;padding:24px}.channel-grid,.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px}.card,.panel{background:white;border-radius:14px;padding:16px;box-shadow:0 2px 12px #0000000d}.card{cursor:pointer}.card:hover{transform:translateY(-2px)}.card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:10px}.card h3{margin:10px 0 4px}.card p{margin:0;color:#647089;font-size:14px}.hidden{display:none!important}.back{border:0;background:none;padding:0 0 14px;color:#3657b5;cursor:pointer;font-size:15px}.video-card button{width:100%;border:0;background:none;text-align:left;padding:0;cursor:pointer}.video-card h3{font-size:16px}.player{position:fixed;inset:0;background:#000b;display:flex;align-items:center;justify-content:center;padding:18px;z-index:10}.player-inner{width:min(1000px,100%);position:relative}.player iframe{width:100%;aspect-ratio:16/9;border:0}.close{position:absolute;right:-4px;top:-42px;border:0;background:none;color:white;font-size:32px;cursor:pointer}.panel{margin-bottom:20px}.panel h2{margin-top:0}.inline-form{display:flex;gap:10px}.inline-form input,.panel input{flex:1;padding:11px;border:1px solid #ccd3df;border-radius:8px;font:inherit}.panel button,button{padding:10px 14px;border:0;border-radius:8px;background:#3657b5;color:white;cursor:pointer}.hint{color:#647089}.error{color:#b42318}.message{min-height:20px}.admin-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid #edf0f5}.admin-row:last-child{border-bottom:0}.admin-row small{display:block;color:#647089}.admin-actions{display:flex;gap:6px;flex-wrap:wrap}.danger{background:#b42318}.secondary{background:#647089}
@media(max-width:600px){main{padding:16px}.inline-form{flex-direction:column}.topbar{padding:16px}.admin-row{align-items:flex-start;flex-direction:column}}