*{box-sizing:border-box}
:root{--red:#ff0033;--text:#0f0f0f;--muted:#606060;--bg:#fff;--soft:#f2f2f2;--line:#e5e5e5}
body{margin:0;font-family:"Noto Sans Bengali",Arial,sans-serif;color:var(--text);background:var(--bg)}
a{text-decoration:none;color:inherit}
.topbar{height:64px;border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:50}
.topbar-inner{height:100%;display:flex;align-items:center;gap:18px;padding:0 20px}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:20px;white-space:nowrap}

.brand>span:last-child>span{color:var(--red)}
.brand-icon{display:grid;place-items:center;width:34px;height:24px;background:var(--red);color:#fff;border-radius:7px;font-size:14px}
.icon-btn{border:0;background:transparent;font-size:23px;cursor:pointer;padding:6px}
.mobile-menu-btn{display:none}
.search-box{display:flex;max-width:650px;flex:1;margin:auto}
.search-box input{height:40px;border:1px solid #ccc;border-right:0;border-radius:22px 0 0 22px;padding:0 18px;font-size:15px;outline:none;width:100%}
.search-box input:focus{border-color:#999}
.search-box button{width:58px;border:1px solid #ccc;background:#f8f8f8;border-radius:0 22px 22px 0;cursor:pointer;font-size:16px}
.admin-link{font-size:14px;border:1px solid var(--line);padding:8px 14px;border-radius:20px}
.page-layout{display:flex;min-height:calc(100vh - 64px)}
.sidebar{width:230px;flex:none;border-right:1px solid var(--line);padding:14px 10px;position:sticky;top:64px;height:calc(100vh - 64px);overflow-y:auto;background:#fff}
.side-link{display:flex;gap:16px;align-items:center;padding:11px 14px;border-radius:10px;font-size:14px}
.side-link:hover{background:var(--soft)}
.side-title{font-size:12px;color:#777;font-weight:700;padding:22px 14px 8px;text-transform:uppercase}
.main-content{flex:1;min-width:0;padding:22px 3vw 50px}
.section-heading{display:flex;justify-content:space-between;align-items:center;gap:10px;margin:8px 0 20px}
.section-heading h1,.section-heading h2{margin:0;font-size:23px}
.muted{color:var(--muted);font-size:14px}
.category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:20px}
.category-card{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;transition:.15s}
.category-card:hover{transform:translateY(-2px);box-shadow:0 5px 18px #00000012}
.category-image{aspect-ratio:16/9;width:100%;object-fit:cover;background:#eee}
.category-name{padding:13px 14px;font-weight:700}
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(245px,1fr));gap:28px 18px}
.video-card{min-width:0}
.thumb-wrap{position:relative;border-radius:10px;overflow:hidden;background:#eee;aspect-ratio:16/9}
.video-thumb{width:100%;height:100%;object-fit:cover;display:block}
.play-badge{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:48px;height:48px;border-radius:50%;background:#000b;color:#fff;display:grid;place-items:center;font-size:19px;opacity:.92}
.video-info{padding:10px 3px}
.video-title{font-weight:700;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{color:var(--muted);font-size:12px;margin-top:5px}
.empty{padding:50px 20px;text-align:center;color:#777;border:1px dashed #ccc;border-radius:12px}
.hero{background:linear-gradient(135deg,#fff0f3,#fff);border:1px solid #ffd5dc;border-radius:16px;padding:26px;margin-bottom:28px}
.hero h1{margin:0 0 8px;font-size:28px}.hero p{margin:0;color:#666}
.breadcrumb{font-size:13px;color:#777;margin-bottom:18px}
.player-box{max-width:1000px;margin:0 auto}
.player{position:relative;aspect-ratio:16/9;background:#000;border-radius:12px;overflow:hidden}
.player iframe{width:100%;height:100%;border:0}
.watch-title{font-size:24px;margin:18px 0 8px}.watch-meta{color:#666;font-size:13px}
.related{margin-top:30px}
.footer{border-top:1px solid var(--line);padding:25px;text-align:center;color:#777;font-size:12px}
@media(max-width:800px){
 .topbar-inner{padding:0 12px;gap:10px}.mobile-menu-btn{display:block}.brand{font-size:17px}.brand-icon{width:30px;height:22px}.admin-link{display:none}
 .sidebar{position:fixed;left:-250px;top:64px;z-index:100;transition:left .2s;width:240px;box-shadow:5px 0 20px #0002}.sidebar-open .sidebar{left:0}
 .main-content{padding:18px 14px 40px}
 .category-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.video-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 10px}
 .video-title{font-size:14px}.search-box{max-width:none}
}
@media(max-width:500px){
 .search-box input{font-size:13px;padding-left:12px}.search-box button{width:45px}
 .category-grid,.video-grid{grid-template-columns:1fr 1fr}.section-heading h1,.section-heading h2{font-size:19px}
}