:root{
  --bg:#0f1417;
  --bg-elevated:#181e22;
  --bg-hover:#222a30;
  --rail-width:240px;
  --rail-mini:72px;
  --header-h:56px;
  --text:#f1f1f1;
  --text-dim:#aab0b4;
  --text-faint:#8a9096;
  --border:#2c3438;
  --accent-blue:#2f7bd6;
  --accent-teal:#35d0c0;
  --accent-grad:linear-gradient(90deg,var(--accent-blue),var(--accent-teal));
  --gold:#f2c14e;
  --gold-dim:#7a6326;
  --danger:#f04141;
  --radius:12px;
  font-size:16px;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;height:100%;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:"Roboto","Segoe UI",Arial,sans-serif;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:#3a4247;border-radius:8px;}
::selection{background:var(--accent-teal);color:#04211d;}

/* ---------- HEADER ---------- */
header.topbar{
  position:fixed;top:0;left:0;right:0;height:var(--header-h);
  display:flex;align-items:center;justify-content:space-between;
  background:var(--bg);z-index:100;padding:0 16px;
  border-bottom:1px solid transparent;
}
.topbar-left{display:flex;align-items:center;gap:20px;min-width:180px;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:none;background:transparent;
  display:flex;align-items:center;justify-content:center;color:var(--text);
  flex-shrink:0;position:relative;
}
.icon-btn:hover{background:var(--bg-hover);}
.icon-btn svg{width:22px;height:22px;fill:currentColor;}
.brand{display:flex;align-items:center;gap:8px;}
.brand img.logo-mark{width:34px;height:34px;border-radius:50%;object-fit:cover;}
.brand .wordmark{font-size:19px;font-weight:700;letter-spacing:-.3px;white-space:nowrap;}
.brand .wordmark b{
  background:var(--accent-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.premium-pill{
  font-size:10px;font-weight:700;letter-spacing:.6px;color:#20180a;
  background:linear-gradient(90deg,#f6d774,var(--gold));
  padding:2px 7px;border-radius:5px;margin-left:2px;transform:translateY(-1px);
}
.topbar-center{flex:1;max-width:720px;display:flex;align-items:center;gap:8px;margin:0 20px;}
.search-wrap{flex:1;display:flex;height:40px;}
.search-wrap input{
  flex:1;background:var(--bg);border:1px solid var(--border);border-right:none;
  border-radius:20px 0 0 20px;padding:0 16px;color:var(--text);font-size:15px;outline:none;
}
.search-wrap input:focus{border-color:var(--accent-teal);}
.search-wrap button.search-btn{
  width:64px;background:var(--bg-elevated);border:1px solid var(--border);border-left:none;
  border-radius:0 20px 20px 0;display:flex;align-items:center;justify-content:center;color:var(--text);
}
.search-wrap button.search-btn:hover{background:var(--bg-hover);}
.topbar-right{display:flex;align-items:center;gap:6px;justify-content:flex-end;min-width:150px;}
.avatar-btn{
  width:32px;height:32px;border-radius:50%;border:none;overflow:hidden;padding:0;margin-left:6px;
  background:var(--accent-grad);color:#fff;font-weight:700;font-size:13px;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.btn-signin{
  background:transparent;border:1px solid var(--border);color:var(--accent-teal);border-radius:20px;
  padding:8px 14px;font-size:13.5px;font-weight:600;display:flex;align-items:center;gap:8px;white-space:nowrap;
}
.btn-signin:hover{background:var(--bg-hover);}
.btn-signin svg{width:18px;height:18px;fill:currentColor;}

/* ---------- ACCOUNT MENU ---------- */
.account-menu{
  position:fixed;top:52px;right:12px;width:290px;background:var(--bg-elevated);
  border-radius:12px;box-shadow:0 4px 24px rgba(0,0,0,.5);z-index:200;
  display:none;flex-direction:column;overflow:hidden;border:1px solid var(--border);
}
.account-menu.open{display:flex;}
.account-menu .who{display:flex;gap:12px;align-items:center;padding:16px;}
.account-menu .who .av{
  width:44px;height:44px;border-radius:50%;background:var(--accent-grad);
  display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;font-size:17px;
}
.account-menu .who .name{font-size:15px;font-weight:500;}
.account-menu .who .mail{font-size:12.5px;color:var(--text-dim);}
.account-menu hr{border:none;border-top:1px solid var(--border);margin:4px 0;}
.account-menu .item{
  display:flex;align-items:center;gap:20px;padding:9px 16px;font-size:13.5px;background:transparent;border:none;color:var(--text);width:100%;text-align:left;
}
.account-menu .item:hover{background:var(--bg-hover);}
.account-menu .item svg{width:20px;height:20px;fill:var(--text-dim);flex-shrink:0;}
.account-menu .premium-card{
  margin:10px 14px 14px;padding:12px;border-radius:10px;
  background:linear-gradient(135deg,rgba(242,193,78,.14),rgba(53,208,192,.08));
  border:1px solid var(--gold-dim);display:flex;gap:10px;align-items:center;
}
.account-menu .premium-card img{width:34px;height:34px;border-radius:50%;}
.account-menu .premium-card .t{font-size:13px;font-weight:700;color:var(--gold);}
.account-menu .premium-card .s{font-size:11.5px;color:var(--text-dim);}

/* ---------- LAYOUT ---------- */
.shell{padding-top:var(--header-h);}
nav.rail{
  position:fixed;top:var(--header-h);left:0;bottom:0;width:var(--rail-width);
  background:var(--bg);overflow-y:auto;padding:12px 0 24px;transition:width .18s ease;z-index:90;
}
body.rail-collapsed nav.rail{width:var(--rail-mini);}
body.rail-collapsed main.content{margin-left:var(--rail-mini);}
body.rail-collapsed .rail .txt{display:none;}
body.rail-collapsed .rail .section-title{display:none;}
body.rail-collapsed .rail a.rail-link{flex-direction:column;gap:2px;padding:14px 0;font-size:10px;border-radius:8px;}
body.rail-collapsed .rail a.rail-link svg{width:22px;height:22px;}
.rail-group{padding:4px 8px;border-bottom:1px solid var(--border);margin-bottom:8px;}
.rail-group:last-child{border-bottom:none;}
a.rail-link{
  display:flex;align-items:center;gap:20px;padding:0 14px;height:40px;border-radius:10px;
  font-size:14px;color:var(--text);white-space:nowrap;
}
a.rail-link:hover{background:var(--bg-hover);}
a.rail-link.active{background:var(--bg-elevated);font-weight:700;}
a.rail-link.active svg{fill:var(--text);}
a.rail-link svg{width:22px;height:22px;fill:var(--text-dim);flex-shrink:0;}
a.rail-link.gold svg{fill:var(--gold);}
a.rail-link.gold .txt{color:var(--gold);font-weight:600;}
.section-title{font-size:14px;font-weight:600;padding:8px 14px;color:var(--text);}

main.content{margin-left:var(--rail-width);flex:1;padding:20px 24px 100px;transition:margin-left .18s ease;min-height:calc(100vh - var(--header-h));}

/* ---------- PREMIUM BANNER ---------- */
.promo{
  position:relative;display:flex;align-items:center;gap:20px;padding:18px 22px;margin-bottom:20px;
  border-radius:var(--radius);
  background:linear-gradient(120deg,rgba(47,123,214,.18),rgba(53,208,192,.10) 60%,rgba(242,193,78,.12));
  border:1px solid var(--border);
  overflow:hidden;
}
.promo img.badge{width:64px;height:64px;border-radius:50%;flex-shrink:0;box-shadow:0 0 0 3px rgba(242,193,78,.35);}
.promo .body{flex:1;min-width:0;}
.promo .title{font-size:17px;font-weight:700;margin:0 0 4px;}
.promo .title span{color:var(--gold);}
.promo .perks{display:flex;flex-wrap:wrap;gap:14px;margin:6px 0 0;padding:0;list-style:none;}
.promo .perks li{display:flex;align-items:center;gap:6px;font-size:12.5px;color:var(--text-dim);}
.promo .perks svg{width:15px;height:15px;fill:var(--accent-teal);}
.promo .cta{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.btn-gold{
  background:linear-gradient(90deg,#f6d774,var(--gold));color:#241c05;font-weight:700;font-size:13.5px;
  border:none;border-radius:20px;padding:10px 18px;white-space:nowrap;
}
.btn-gold:hover{filter:brightness(1.08);}
.btn-gold:disabled{opacity:.6;cursor:default;filter:none;}
.btn-ghost{
  background:transparent;border:1px solid var(--border);color:var(--text);border-radius:20px;
  padding:9px 14px;font-size:13px;
}
.btn-ghost:hover{background:var(--bg-hover);}
.promo .close{
  position:absolute;top:8px;right:8px;width:30px;height:30px;border-radius:50%;border:none;
  background:transparent;color:var(--text-dim);display:flex;align-items:center;justify-content:center;
}
.promo .close:hover{background:rgba(255,255,255,.08);color:var(--text);}

/* ---------- CHIPS ---------- */
.chipbar{display:flex;gap:10px;overflow-x:auto;padding-bottom:16px;margin-bottom:6px;scrollbar-width:none;}
.chipbar::-webkit-scrollbar{display:none;}
.chip{
  flex-shrink:0;background:var(--bg-elevated);border:none;color:var(--text);font-size:13.5px;font-weight:500;
  padding:8px 14px;border-radius:9px;white-space:nowrap;
}
.chip:hover{background:var(--bg-hover);}
.chip.active{background:var(--text);color:#0f1417;}

/* ---------- VIDEO GRID ---------- */
.grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px 16px;
}
.card{cursor:pointer;}
.thumb{
  position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:16/9;
  display:flex;align-items:center;justify-content:center;margin-bottom:10px;
  background:linear-gradient(135deg,var(--accent-blue),var(--accent-teal));
}
.thumb .glyph{width:38%;height:38%;opacity:.35;fill:#fff;}
.thumb .play-overlay{
  position:absolute;inset:0;background:rgba(0,0,0,0);display:flex;align-items:center;justify-content:center;
  transition:background .15s;
}
.card:hover .play-overlay{background:rgba(0,0,0,.25);}
.thumb .play-overlay svg{width:46px;height:46px;fill:#fff;opacity:0;transition:opacity .15s;filter:drop-shadow(0 1px 4px rgba(0,0,0,.6));}
.card:hover .play-overlay svg{opacity:1;}
.meta-row{display:flex;gap:10px;}
.meta-row .av{
  width:36px;height:36px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:700;font-size:13px;background:var(--accent-grad);
}
.meta-row .txt{min-width:0;flex:1;}
.meta-row .vtitle{
  font-size:14.5px;font-weight:600;line-height:1.35;margin:0 0 4px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.meta-row .stats{font-size:12.5px;color:var(--text-dim);}

.empty-state{text-align:center;color:var(--text-dim);padding:60px 20px;font-size:14px;}

/* ---------- AUTH MODAL ---------- */
.modal-backdrop{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:300;display:none;align-items:center;justify-content:center;
}
.modal-backdrop.open{display:flex;}
.modal{
  background:var(--bg-elevated);border:1px solid var(--border);border-radius:14px;width:340px;max-width:calc(100vw - 32px);
  padding:24px;
}
.modal h2{margin:0 0 16px;font-size:18px;}
.modal label{display:block;font-size:12.5px;color:var(--text-dim);margin:12px 0 4px;}
.modal input{
  width:100%;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:10px 12px;
  color:var(--text);font-size:14px;outline:none;
}
.modal input:focus{border-color:var(--accent-teal);}
.modal .err{color:var(--danger);font-size:12.5px;margin-top:10px;min-height:16px;}
.modal .actions{display:flex;justify-content:space-between;align-items:center;margin-top:18px;}
.modal .switch-link{font-size:12.5px;color:var(--accent-teal);background:none;border:none;padding:0;}
.btn-primary{
  background:var(--accent-grad);color:#04211d;font-weight:700;font-size:13.5px;border:none;border-radius:20px;padding:10px 18px;
}
.btn-primary:disabled{opacity:.6;}

/* ---------- WATCH PAGE ---------- */
.watch-wrap{max-width:1100px;margin:0 auto;padding:20px 24px 60px;}
.player-box{position:relative;background:#000;border-radius:var(--radius);overflow:hidden;aspect-ratio:16/9;}
.player-box video{width:100%;height:100%;display:block;background:#000;}
.preroll{
  position:absolute;inset:0;background:#000;display:flex;flex-direction:column;align-items:center;justify-content:center;
  color:#fff;gap:14px;z-index:5;
}
.preroll .tag{font-size:11px;letter-spacing:1px;color:var(--text-dim);text-transform:uppercase;}
.preroll .msg{font-size:16px;font-weight:600;max-width:80%;text-align:center;}
.preroll .count{font-size:13px;color:var(--text-dim);}
.preroll .skip{
  position:absolute;bottom:14px;right:14px;background:rgba(255,255,255,.15);color:#fff;border:none;
  border-radius:6px;padding:8px 14px;font-size:12.5px;font-weight:600;
}
.preroll .skip:hover{background:rgba(255,255,255,.28);}
.preroll .skip:disabled{opacity:.5;}
.adsense-slot{
  margin-top:16px;padding:14px;border:1px dashed var(--border);border-radius:10px;text-align:center;
  color:var(--text-faint);font-size:12px;
}
.watch-title{font-size:20px;font-weight:700;margin:18px 0 6px;}
.watch-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--text-dim);font-size:13.5px;margin-bottom:14px;}
.watch-desc{background:var(--bg-elevated);border-radius:10px;padding:14px;font-size:13.5px;color:var(--text-dim);white-space:pre-wrap;}
.ad-free-tag{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:700;color:var(--gold);}
.ad-free-tag svg{width:13px;height:13px;fill:var(--gold);}

/* ---------- UPLOAD PAGE ---------- */
.upload-form{max-width:520px;margin:0 auto;padding:30px 24px;}
.upload-form h1{font-size:20px;margin-bottom:20px;}
.upload-form label{display:block;font-size:13px;color:var(--text-dim);margin:14px 0 6px;}
.upload-form input[type=text], .upload-form textarea{
  width:100%;background:var(--bg-elevated);border:1px solid var(--border);border-radius:8px;padding:10px 12px;
  color:var(--text);font-size:14px;outline:none;font-family:inherit;
}
.upload-form input[type=file]{color:var(--text-dim);font-size:13px;}
.upload-form textarea{resize:vertical;min-height:80px;}
.upload-status{margin-top:14px;font-size:13px;}
.upload-status.ok{color:var(--accent-teal);}
.upload-status.err{color:var(--danger);}

/* ---------- RESPONSIVE ---------- */
@media (max-width:900px){
  .topbar-center{display:none;}
  .topbar-right .icon-btn.mobile-hide{display:none;}
  nav.rail{transform:translateX(-100%);width:var(--rail-width);transition:transform .2s ease;}
  body.rail-collapsed nav.rail{transform:translateX(0);width:var(--rail-width);}
  body.rail-collapsed .rail .txt{display:inline;}
  body.rail-collapsed .rail .section-title{display:block;}
  body.rail-collapsed .rail a.rail-link{flex-direction:row;gap:20px;padding:0 14px;font-size:14px;}
  body.rail-collapsed .rail a.rail-link svg{width:22px;height:22px;}
  main.content{margin-left:0 !important;}
  .promo{flex-wrap:wrap;}
}
@media (max-width:520px){
  .brand .wordmark{display:none;}
  .search-wrap{display:none;}
  .topbar-center{display:flex;justify-content:flex-end;}
}