:root{
  --bg:#0f0f0f; --bg-soft:#181818; --card:#1c1c1c; --card-hover:#262626;
  --text:#f1f1f1; --text-dim:#aaaaaa; --accent:#ff0033; --accent-hover:#ff2b53;
  --border:#2a2a2a; --link:#3ea6ff;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  -webkit-font-smoothing:antialiased;line-height:1.4}
a{color:inherit;text-decoration:none}
header{position:sticky;top:0;z-index:100;display:flex;align-items:center;gap:16px;
  padding:10px 20px;background:rgba(15,15,15,.95);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border)}
.logo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:20px;
  letter-spacing:-.5px;cursor:pointer;flex-shrink:0}
.logo .play{width:32px;height:22px;background:var(--accent);border-radius:6px;
  display:flex;align-items:center;justify-content:center;transition:transform .2s}
.logo:hover .play{transform:scale(1.08)}
.logo .play::after{content:"";border-left:8px solid #fff;
  border-top:5px solid transparent;border-bottom:5px solid transparent;margin-left:2px}
.search{flex:1;max-width:640px;display:flex;background:var(--bg-soft);
  border:1px solid var(--border);border-radius:20px;overflow:hidden;transition:border-color .2s}
.search:focus-within{border-color:var(--link)}
.search input{flex:1;background:transparent;border:0;outline:0;color:var(--text);
  padding:10px 18px;font-size:14px}
.search input::placeholder{color:var(--text-dim)}
.search button{background:transparent;border:0;border-left:1px solid var(--border);
  color:var(--text-dim);padding:0 20px;cursor:pointer;font-size:15px;transition:all .2s}
.search button:hover{color:var(--text);background:var(--card-hover)}
.header-actions{display:flex;gap:8px;margin-left:auto;align-items:center}
.icon-btn{width:38px;height:38px;border-radius:50%;border:0;background:var(--bg-soft);
  color:var(--text-dim);display:flex;align-items:center;justify-content:center;
  cursor:pointer;font-size:16px;transition:all .2s}
.icon-btn:hover{background:var(--card-hover);color:var(--text)}
.avatar{width:34px;height:34px;border-radius:50%;
  background:linear-gradient(135deg,#ff0033,#7b2ff7);display:flex;align-items:center;
  justify-content:center;font-weight:700;font-size:14px;cursor:pointer;flex-shrink:0}
.btn-login{background:transparent;border:1px solid var(--link);color:var(--link);
  padding:8px 16px;border-radius:20px;font-size:14px;font-weight:600;cursor:pointer;
  font-family:inherit;transition:all .2s;white-space:nowrap}
.btn-login:hover{background:rgba(62,166,255,.15)}
.user-menu{position:relative}
.user-menu .dropdown{position:absolute;right:0;top:46px;background:var(--card);
  border:1px solid var(--border);border-radius:12px;min-width:220px;padding:8px;
  display:none;box-shadow:0 10px 40px rgba(0,0,0,.6);z-index:200}
.user-menu.open .dropdown{display:block}
.dropdown .dd-head{padding:12px 14px;border-bottom:1px solid var(--border);margin-bottom:6px}
.dropdown .dd-head b{display:block;font-size:14px}
.dropdown .dd-head span{font-size:12px;color:var(--text-dim)}
.dropdown a{display:flex;align-items:center;gap:10px;padding:10px 14px;
  border-radius:8px;font-size:14px;cursor:pointer;transition:background .15s}
.dropdown a:hover{background:var(--card-hover)}
.layout{display:flex;min-height:calc(100vh - 59px)}
nav.sidebar{width:220px;flex-shrink:0;padding:12px 8px;border-right:1px solid var(--border);
  position:sticky;top:59px;height:calc(100vh - 59px);overflow-y:auto}
nav.sidebar a{display:flex;align-items:center;gap:14px;padding:10px 14px;border-radius:10px;
  font-size:14px;color:var(--text);transition:background .15s;cursor:pointer}
nav.sidebar a:hover{background:var(--card-hover)}
nav.sidebar a.active{background:var(--card-hover);font-weight:600}
nav.sidebar a .ico{font-size:17px;width:20px;text-align:center}
.nav-sep{height:1px;background:var(--border);margin:10px 14px}
main{flex:1;padding:24px 32px 60px;max-width:1600px;margin:0 auto;width:100%}
.hero{background:linear-gradient(135deg,#1f1f1f 0%,#2a0a12 60%,#3d0a18 100%);
  border:1px solid var(--border);border-radius:18px;padding:36px 40px;
  margin-bottom:36px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;
  border-radius:50%;background:radial-gradient(circle,rgba(255,0,51,.25),transparent 70%)}
.hero .badge{display:inline-block;font-size:12px;font-weight:600;background:var(--accent);
  color:#fff;padding:4px 12px;border-radius:20px;margin-bottom:14px;letter-spacing:.4px}
.hero h1{font-size:clamp(24px,3.2vw,40px);font-weight:800;letter-spacing:-1px;
  margin-bottom:12px;max-width:640px}
.hero p{color:var(--text-dim);font-size:16px;max-width:560px;margin-bottom:24px}
.btn{display:inline-flex;align-items:center;gap:8px;border:0;border-radius:24px;
  padding:12px 24px;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s;
  font-family:inherit}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.1);color:var(--text)}
.btn-ghost:hover{background:rgba(255,255,255,.18)}
.hero .actions{display:flex;gap:12px;flex-wrap:wrap}
.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.section-head h2{font-size:20px;font-weight:700;letter-spacing:-.3px}
.section-head .more{font-size:13px;color:var(--link);cursor:pointer;background:none;
  border:0;font-family:inherit}
.section-head .more:hover{text-decoration:underline}
.grid{display:grid;gap:22px 16px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  margin-bottom:40px}
.video-card{cursor:pointer;transition:transform .2s}
.video-card:hover{transform:translateY(-3px)}
.thumb{position:relative;aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:#222}
.thumb .grad{position:absolute;inset:0}
.g1{background:linear-gradient(135deg,#ff0033,#7b2ff7)}
.g2{background:linear-gradient(135deg,#00c6ff,#0072ff)}
.g3{background:linear-gradient(135deg,#f7971e,#ffd200)}
.g4{background:linear-gradient(135deg,#11998e,#38ef7d)}
.g5{background:linear-gradient(135deg,#fc466b,#3f5efb)}
.g6{background:linear-gradient(135deg,#8e2de2,#4a00e0)}
.g7{background:linear-gradient(135deg,#e96443,#904e95)}
.g8{background:linear-gradient(135deg,#232526,#414345)}
.thumb::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 45%,rgba(0,0,0,.7))}
.duration{position:absolute;right:8px;bottom:8px;z-index:2;background:rgba(0,0,0,.85);
  color:#fff;font-size:12px;font-weight:600;padding:3px 7px;border-radius:5px}
.play-overlay{position:absolute;inset:0;z-index:3;display:flex;align-items:center;
  justify-content:center;opacity:0;transition:opacity .2s}
.video-card:hover .play-overlay{opacity:1}
.play-overlay span{width:54px;height:54px;border-radius:50%;background:rgba(0,0,0,.65);
  backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;
  border:2px solid rgba(255,255,255,.8)}
.play-overlay span::after{content:"";border-left:16px solid #fff;
  border-top:10px solid transparent;border-bottom:10px solid transparent;margin-left:4px}
.video-info{display:flex;gap:12px;margin-top:12px}
.channel-avatar{width:36px;height:36px;border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;font-size:14px;
  font-weight:700;color:#fff}
.video-text{min-width:0;flex:1}
.video-title{font-size:15px;font-weight:600;line-height:1.35;margin-bottom:5px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{font-size:13px;color:var(--text-dim);line-height:1.4}
.video-meta .dot{margin:0 4px}
.auth-wrap{min-height:calc(100vh - 59px);display:flex;align-items:center;
  justify-content:center;padding:40px 20px}
.auth-card{width:100%;max-width:440px;background:var(--card);border:1px solid var(--border);
  border-radius:18px;padding:40px 36px;box-shadow:0 20px 60px rgba(0,0,0,.5)}
.auth-card .brand{display:flex;align-items:center;gap:10px;justify-content:center;
  margin-bottom:26px;font-weight:700;font-size:22px}
.auth-card .brand .play{width:36px;height:24px;background:var(--accent);
  border-radius:6px;display:flex;align-items:center;justify-content:center}
.auth-card .brand .play::after{content:"";border-left:9px solid #fff;
  border-top:5.5px solid transparent;border-bottom:5.5px solid transparent;margin-left:2px}
.auth-card h1{font-size:24px;font-weight:700;text-align:center;margin-bottom:8px}
.auth-card .sub{text-align:center;color:var(--text-dim);font-size:14px;margin-bottom:28px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-dim);margin-bottom:6px}
.field input{width:100%;background:var(--bg-soft);border:1px solid var(--border);
  border-radius:10px;padding:12px 14px;color:var(--text);font-size:15px;
  font-family:inherit;outline:0;transition:border-color .2s,background .2s}
.field input:focus{border-color:var(--link);background:#1f1f1f}
.btn-block{width:100%;justify-content:center;padding:13px;border-radius:12px;font-size:15px}
.auth-card .row{display:flex;align-items:center;justify-content:space-between;
  font-size:13px;margin-bottom:20px}
.auth-card .row label{display:flex;align-items:center;gap:8px;color:var(--text-dim);cursor:pointer}
.auth-card .row a{color:var(--link)}
.auth-card .row a:hover{text-decoration:underline}
.auth-divider{display:flex;align-items:center;gap:12px;color:var(--text-dim);
  font-size:12px;margin:24px 0}
.auth-divider::before,.auth-divider::after{content:"";flex:1;height:1px;background:var(--border)}
.auth-switch{text-align:center;font-size:14px;color:var(--text-dim);margin-top:22px}
.auth-switch a{color:var(--link);font-weight:600}
.auth-switch a:hover{text-decoration:underline}
.social-row{display:flex;gap:10px}
.social-row button{flex:1;background:var(--bg-soft);border:1px solid var(--border);
  color:var(--text);padding:11px;border-radius:10px;cursor:pointer;font-size:14px;
  font-family:inherit;transition:background .2s}
.social-row button:hover{background:var(--card-hover)}
.msg{padding:11px 14px;border-radius:10px;font-size:13px;margin-bottom:16px;display:none}
.msg.show{display:block}
.msg.err{background:rgba(255,0,51,.12);border:1px solid rgba(255,0,51,.4);color:#ff8fa3}
.msg.ok{background:rgba(56,239,125,.12);border:1px solid rgba(56,239,125,.4);color:#7df0a8}
footer{border-top:1px solid var(--border);padding:28px 32px;text-align:center;
  color:var(--text-dim);font-size:13px}
footer a{color:var(--link);cursor:pointer}
footer a:hover{text-decoration:underline}
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%) translateY(120%);
  background:#fff;color:#111;padding:12px 22px;border-radius:30px;font-size:14px;
  font-weight:600;z-index:999;transition:transform .3s cubic-bezier(.34,1.56,.64,1);
  box-shadow:0 8px 30px rgba(0,0,0,.5);white-space:nowrap;max-width:90vw;overflow:hidden;
  text-overflow:ellipsis}
.toast.show{transform:translateX(-50%) translateY(0)}
@media (max-width:900px){
  nav.sidebar{display:none}
  main{padding:18px 16px 50px}
  .hero{padding:26px 22px;border-radius:14px}
  .search{display:none}
  .hide-m{display:none !important}
  .auth-card{padding:30px 22px}
}
@media (max-width:520px){.grid{grid-template-columns:1fr}}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:#383838;border-radius:5px}
::-webkit-scrollbar-thumb:hover{background:#4d4d4d}