:root {
  --bg: #0d0d12; --bg2: #15151d; --bg3: #1d1d28; --line: #2a2a38;
  --txt: #e7e7ef; --dim: #9a9ab0; --accent: #a855f7; --accent2: #7c3aed;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--txt); height: 100vh; overflow: hidden; }
.hidden { display: none !important; }
button { cursor: pointer; font: inherit; }
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-thumb { background: var(--line); border-radius: 6px; }

/* ---- login ---- */
#login { position: fixed; inset: 0; display: grid; place-items: center;
  background: radial-gradient(120% 120% at 50% 0%, #1a1126 0%, var(--bg) 60%); }
#loginForm { display: flex; flex-direction: column; align-items: center; gap: 14px;
  background: var(--bg2); padding: 40px 44px; border: 1px solid var(--line); border-radius: 18px;
  box-shadow: 0 20px 60px rgba(0,0,0,.5); width: 320px; }
#loginForm .logo { font-size: 44px; }
#loginForm h1 { font-size: 22px; letter-spacing: -.02em; }
#loginForm .sub { color: var(--dim); font-size: 13px; margin-top: -8px; }
#loginForm input { width: 100%; padding: 12px 14px; background: var(--bg3); border: 1px solid var(--line);
  border-radius: 10px; color: var(--txt); font-size: 15px; }
#loginForm input:focus { outline: none; border-color: var(--accent); }
#loginForm button { width: 100%; padding: 12px; border: none; border-radius: 10px; color: #fff; font-weight: 600;
  background: linear-gradient(135deg, var(--accent), var(--accent2)); }
#loginErr { color: #f87171; font-size: 13px; min-height: 16px; }

/* ---- app layout ---- */
#app { display: grid; grid-template-columns: 72px 240px 1fr; height: 100vh; }
#servers { background: var(--bg); border-right: 1px solid var(--line); padding: 12px 0; display: flex;
  flex-direction: column; align-items: center; gap: 10px; overflow-y: auto; }
.srv { width: 48px; height: 48px; border-radius: 16px; background: var(--bg3); border: 1px solid var(--line);
  display: grid; place-items: center; font-weight: 700; color: var(--dim); overflow: hidden; transition: .15s; }
.srv:hover, .srv.active { border-radius: 14px; border-color: var(--accent); color: #fff; }
.srv img { width: 100%; height: 100%; object-fit: cover; }

#tree { background: var(--bg2); border-right: 1px solid var(--line); overflow-y: auto; padding: 10px 8px; }
#tree .hint { color: var(--dim); font-size: 13px; padding: 16px 10px; }
.cat { color: var(--dim); font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em;
  padding: 14px 10px 4px; }
.chan { padding: 7px 10px; border-radius: 8px; color: var(--txt); font-size: 14px; cursor: pointer; display: flex; gap: 6px; }
.chan::before { content: "#"; color: var(--dim); }
.chan:hover { background: var(--bg3); }
.chan.active { background: var(--accent2); color: #fff; }
.chan.active::before { color: #fff; }

#content { overflow-y: auto; padding: 20px; }
#content .empty, #content .loading { color: var(--dim); display: grid; place-items: center; height: 100%; font-size: 15px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }
.card { background: var(--bg2); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; border-left: 4px solid var(--accent); }
.card video { width: 100%; max-height: 520px; background: #000; display: block; }
.card .body { padding: 12px 14px; }
.card .title { font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.card .author { color: var(--accent); font-size: 13px; text-decoration: none; }
.card .tags { color: var(--dim); font-size: 12px; margin: 6px 0; word-break: break-word; }
.card .stats { display: flex; flex-wrap: wrap; gap: 10px; color: var(--dim); font-size: 12px; margin-top: 8px; }
.card .novid { padding: 20px 14px; color: var(--dim); font-size: 13px; }
.loadmore { display: block; margin: 22px auto; padding: 10px 24px; background: var(--bg3); border: 1px solid var(--line);
  border-radius: 10px; color: var(--txt); }
.loadmore:hover { border-color: var(--accent); }
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.topbar h2 { font-size: 17px; }
.topbar h2 span { color: var(--dim); font-weight: 400; }
#logout { background: none; border: 1px solid var(--line); color: var(--dim); padding: 6px 12px; border-radius: 8px; font-size: 12px; }