/* Tilavaddinov dars boti: umumiy dizayn tizimi.
   Qoidalar: og'ir effektlar (backdrop-filter, katta soyalar, ko'p animatsiya) ishlatilmaydi,
   animatsiya faqat transform/opacity bilan, shunda telefon qotmaydi. */
:root {
  --bg:#070b17; --bg2:#0d1428;
  --surface:rgba(255,255,255,.045); --surface2:rgba(255,255,255,.08);
  --line:rgba(255,255,255,.09);
  --text:#eef2ff; --muted:#93a0c0;
  --a1:#5b8cff; --a2:#8b5cf6;
  --grad:linear-gradient(135deg,#5b8cff 0%,#8b5cf6 100%);
  --ok:#34d399; --bad:#fb7185; --warn:#fbbf24; --live:#ff4d6d; --gold:#e8b44a;
  --accent:#5b8cff; --card:rgba(255,255,255,.05);
  --safe-t:env(safe-area-inset-top,0px); --safe-b:env(safe-area-inset-bottom,0px);
}
* { box-sizing:border-box; -webkit-tap-highlight-color:transparent; }
html { -webkit-text-size-adjust:100%; }
body {
  margin:0; min-height:100vh; color:var(--text); background:var(--bg);
  font:16px/1.5 -apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,Inter,system-ui,sans-serif;
  display:flex; justify-content:center;
  padding:max(14px,var(--safe-t)) 14px calc(26px + var(--safe-b));
}
body::before {
  content:""; position:fixed; top:0; right:0; bottom:0; left:0; z-index:-1; pointer-events:none;
  background:
    radial-gradient(900px 480px at 8% -8%, rgba(91,140,255,.22), transparent 60%),
    radial-gradient(800px 460px at 105% 0%, rgba(139,92,246,.18), transparent 55%),
    radial-gradient(700px 500px at 50% 118%, rgba(52,211,153,.07), transparent 60%),
    linear-gradient(180deg,var(--bg2),var(--bg));
}
.box { width:100%; max-width:560px; margin:0 auto; }
.hidden { display:none !important; }
h1,h2,h3,h4 { letter-spacing:-.01em; }
h2 { margin:6px 0 14px; font-size:26px; font-weight:800; }
p { margin:0; }
a { color:#8fb0ff; text-decoration:none; }
.muted { color:var(--muted); font-size:14px; }

/* ---------- yuqori panel ---------- */
.top { display:flex; align-items:center; gap:12px; padding:6px 2px 14px; }
.top .logo { width:42px; height:42px; border-radius:14px; object-fit:cover; flex:none; box-shadow:0 0 0 1px var(--line); background:#fff2; }
.top .brand { flex:1; min-width:0; line-height:1.25; }
.top .brand b { display:block; font-size:14px; font-weight:800; letter-spacing:.01em; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.top .brand span { font-size:12px; color:var(--muted); }
.top a.back { font-size:14px; font-weight:600; padding:8px 12px; border-radius:12px; background:var(--surface); border:1px solid var(--line); }

/* ---------- kartalar ---------- */
.card {
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.03));
  border:1px solid var(--line); border-radius:22px; padding:16px; margin-bottom:12px;
}
.hero { text-align:center; padding:34px 18px 22px; }
.hero h2 { margin:18px 0 8px; font-size:28px; }
.hero p { color:var(--muted); margin-bottom:22px; padding:0 6px; }
.orb {
  width:104px; height:104px; margin:0 auto; border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:46px;
  background:radial-gradient(circle at 30% 25%,rgba(255,255,255,.28),rgba(91,140,255,.35) 45%,rgba(139,92,246,.35));
  box-shadow:0 0 0 1px var(--line), 0 14px 40px rgba(91,140,255,.28);
  animation:float 4.5s ease-in-out infinite;
}
.orb.off { background:radial-gradient(circle at 30% 25%,rgba(255,255,255,.18),rgba(147,160,192,.25) 55%,rgba(60,70,100,.3)); box-shadow:0 0 0 1px var(--line); }
.orb.on::after { content:""; position:absolute; }
@keyframes float { 50% { transform:translateY(-7px); } }

/* ---------- tugmalar ---------- */
button {
  font:inherit; font-weight:650; color:#fff; border:1px solid var(--line); border-radius:16px; padding:14px 18px;
  background:var(--surface2); cursor:pointer; touch-action:manipulation;
  transition:transform .12s ease, opacity .15s ease, filter .15s ease;
}
button:active:not(:disabled) { transform:scale(.97); }
button:disabled { opacity:.55; cursor:default; }
button.primary, button.ok, button.danger { width:100%; border-color:transparent; }
button.primary { background:var(--grad); box-shadow:0 10px 26px rgba(91,140,255,.32); }
button.ok { background:linear-gradient(135deg,#10b981,#34d399); box-shadow:0 10px 26px rgba(16,185,129,.26); }
button.danger { background:linear-gradient(135deg,#f43f5e,#fb7185); box-shadow:0 10px 24px rgba(244,63,94,.26); }
button.ghost { background:transparent; width:100%; color:var(--muted); }
button.wide { width:100%; }
.stack > * + * { margin-top:10px; }

/* ---------- JONLI belgisi ---------- */
.live { display:inline-flex; align-items:center; gap:7px; padding:5px 12px; border-radius:99px; background:rgba(255,77,109,.14);
  color:#ff8aa0; font-size:12px; font-weight:800; letter-spacing:.07em; flex:none; }
.live::before { content:""; width:8px; height:8px; border-radius:50%; background:var(--live); animation:blink 1.4s ease-in-out infinite; }
@keyframes blink { 50% { transform:scale(.55); opacity:.45; } }

/* ---------- avatar va ovoz to'lqini ---------- */
.av { --h:220; width:38px; height:38px; border-radius:50%; flex:none; display:flex; align-items:center; justify-content:center;
  font-size:14px; font-weight:800; color:#fff; text-shadow:0 1px 2px rgba(0,0,0,.3);
  background:linear-gradient(135deg,hsl(var(--h) 75% 58%),hsl(calc(var(--h) + 45) 75% 48%)); }
.bars { display:inline-flex; align-items:flex-end; gap:3px; height:18px; flex:none; }
.bars i { width:3px; height:100%; border-radius:2px; background:var(--ok); transform:scaleY(.3); transform-origin:bottom; }
.talk .bars i { animation:eq .9s ease-in-out infinite; }
.talk .bars i:nth-child(2) { animation-delay:.15s; } .talk .bars i:nth-child(3) { animation-delay:.3s; } .talk .bars i:nth-child(4) { animation-delay:.45s; }
@keyframes eq { 0%,100% { transform:scaleY(.3); } 50% { transform:scaleY(1); } }

/* ---------- dars: sahna va ro'yxat ---------- */
.stage { margin-bottom:12px; }
.chip { display:flex; align-items:center; gap:12px; padding:12px 14px; margin-bottom:8px; border-radius:20px;
  background:var(--surface); border:1px solid var(--line); transition:background .2s ease, border-color .2s ease; }
.chip .nm { flex:1; min-width:0; line-height:1.3; }
.chip .nm b { display:block; font-size:16px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.chip .nm small { color:var(--muted); font-size:13px; }
.chip.talk { background:rgba(52,211,153,.09); border-color:rgba(52,211,153,.45); }
.chip.off { opacity:.6; }
.people { max-height:38vh; overflow:auto; -webkit-overflow-scrolling:touch; margin:0 -4px; padding:0 4px; }
.people-h { display:flex; justify-content:space-between; align-items:center; margin:0 0 8px; font-size:13px; color:var(--muted); font-weight:700; }
.prow { display:flex; align-items:center; gap:10px; padding:7px 4px; border-bottom:1px solid rgba(255,255,255,.05); }
.prow:last-child { border:0; }
.prow .av { width:32px; height:32px; font-size:12px; }
.prow .nm { flex:1; min-width:0; font-size:15px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.prow .st { font-size:15px; flex:none; }
.prow.me .nm { color:#9db8ff; font-weight:700; }
.prow.talk .nm { color:var(--ok); }
.prow .bars { height:14px; visibility:hidden; } .prow.talk .bars { visibility:visible; }
.more { width:100%; margin-top:6px; padding:10px; font-size:14px; background:transparent; color:var(--muted); }
.now { display:flex; align-items:center; gap:12px; }
.now .ttl { font-size:18px; font-weight:800; line-height:1.25; }
.now .sub { color:var(--muted); font-size:13px; margin-top:2px; }
.now .tm { margin-left:auto; font-variant-numeric:tabular-nums; font-weight:800; font-size:18px; color:#c9d4f5; }
.hint { min-height:22px; text-align:center; color:var(--muted); font-size:14px; margin:10px 0 14px; }
.banner { padding:11px 14px; border-radius:16px; margin-bottom:12px; font-size:14px; font-weight:600; text-align:center; }
.banner.warn { background:rgba(251,191,36,.12); color:#fcd34d; border:1px solid rgba(251,191,36,.3); }
.err { color:#ff9aad; margin-top:12px; min-height:20px; text-align:center; font-size:14px; }

/* ---------- skeleton ---------- */
.skel { height:78px; border-radius:20px; margin-bottom:12px;
  background:linear-gradient(90deg,rgba(255,255,255,.04),rgba(255,255,255,.1),rgba(255,255,255,.04)); background-size:220% 100%; animation:sh 1.3s linear infinite; }
.skel.big { height:210px; }
@keyframes sh { to { background-position:-220% 0; } }

/* ---------- progress ---------- */
.pbar { height:6px; border-radius:99px; background:rgba(255,255,255,.08); overflow:hidden; }
.pbar i { display:block; height:100%; width:0; background:var(--grad); border-radius:99px; transition:width .35s ease; }

/* ---------- testlar ---------- */
.topbar { position:sticky; top:0; z-index:5; padding:10px 2px 10px; margin:0 0 12px; background:rgba(7,11,23,.94); }
.topbar .trow { display:flex; justify-content:space-between; align-items:center; margin-bottom:8px; }
.topbar #timer { font-variant-numeric:tabular-nums; font-size:20px; font-weight:800; }
.topbar #timer.warn { color:var(--bad); }
.topbar #progress { font-size:14px; color:#c9d4f5; font-weight:700; }
details { margin-bottom:12px; }
summary { cursor:pointer; list-style:none; padding:15px 16px; border-radius:20px; font-weight:800;
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.04)); border:1px solid var(--line); display:flex; align-items:center; gap:10px; }
summary::-webkit-details-marker { display:none; }
summary::after { content:"›"; margin-left:auto; font-size:22px; color:var(--muted); transition:transform .2s ease; }
details[open] > summary::after { transform:rotate(90deg); }
details > .card { margin-top:10px; background:rgba(255,255,255,.03); }
details.sub { margin:10px 0 0 6px; }
details.sub > summary { padding:12px 14px; font-size:14.5px; border-radius:16px; background:rgba(255,255,255,.04); }
.qmeta { display:flex; flex-wrap:wrap; gap:6px; margin:8px 0 12px; }
.chipm { padding:4px 10px; border-radius:99px; font-size:12.5px; font-weight:700; background:var(--surface2); color:#c9d4f5; }
.chipm.best { background:rgba(52,211,153,.14); color:#6ee7b7; }
.q { content-visibility:auto; contain-intrinsic-size:auto 320px; }
.q h3 { margin:0 0 12px; font-size:16px; font-weight:600; line-height:1.55; display:flex; gap:10px; align-items:flex-start; }
.q h3 .qn { flex:none; min-width:30px; height:30px; padding:0 8px; border-radius:10px; display:inline-flex; align-items:center; justify-content:center;
  font-size:13px; font-weight:800; background:var(--grad); color:#fff; margin-top:-2px; }
.q h3 .qt { flex:1; }
.q p { margin:6px 0; line-height:1.55; font-size:15px; color:#dbe3fb; }
.q img { max-width:100%; border-radius:14px; margin:8px 0; background:#fff; }
.opts { display:flex; flex-direction:column; gap:9px; margin-top:12px; }
.opt { display:flex; align-items:center; gap:12px; text-align:left; width:100%; padding:12px 14px; border-radius:16px; font-size:15px; font-weight:500; line-height:1.45;
  background:rgba(255,255,255,.05); border:1px solid var(--line); transition:background .18s ease, border-color .18s ease, transform .12s ease; }
.opt:disabled { color:#fff; opacity:1; }
.opt .L { flex:none; width:30px; height:30px; border-radius:10px; display:flex; align-items:center; justify-content:center; font-size:13px; font-weight:800; background:rgba(255,255,255,.1); }
.opt .T { flex:1; }
.opt.sel { background:rgba(91,140,255,.16); border-color:var(--a1); }
.opt.sel .L { background:var(--a1); }
.opt.sel::after { content:""; width:16px; height:16px; border-radius:50%; flex:none; border:2px solid rgba(255,255,255,.35); border-top-color:#fff; animation:spin .7s linear infinite; }
@keyframes spin { to { transform:rotate(360deg); } }
.opt.right { background:rgba(52,211,153,.14); border-color:var(--ok); }
.opt.right .L { background:var(--ok); color:#06281b; }
.opt.right::after { content:"✓"; font-weight:900; color:var(--ok); font-size:18px; }
.opt.wrong { background:rgba(251,113,133,.14); border-color:var(--bad); }
.opt.wrong .L { background:var(--bad); color:#33060f; }
.opt.wrong::after { content:"✕"; font-weight:900; color:var(--bad); font-size:17px; }
.fb { margin-top:12px; padding:12px 14px; border-radius:16px; font-size:14px; line-height:1.55; background:rgba(255,255,255,.04); border:1px solid var(--line); animation:rise .28s ease; }
.fb.good { border-left:4px solid var(--ok); background:rgba(52,211,153,.07); } .fb.bad { border-left:4px solid var(--bad); background:rgba(251,113,133,.07); }
.fb.good b { color:var(--ok); } .fb.bad b { color:var(--bad); }
.fb .why { margin-top:7px; color:#cfd8f3; }
@keyframes rise { from { opacity:0; transform:translateY(6px); } to { opacity:1; transform:none; } }
table { width:100%; border-collapse:separate; border-spacing:0; margin:10px 0; font-size:14px; overflow:hidden; border-radius:14px; border:1px solid var(--line); }
th, td { padding:9px 10px; text-align:left; vertical-align:top; border-bottom:1px solid var(--line); }
th { background:rgba(255,255,255,.07); font-weight:700; font-size:13px; }
tr:last-child td { border-bottom:0; }
.two { display:grid; grid-template-columns:1fr 1fr; gap:10px; margin:10px 0; font-size:14px; line-height:1.5; }
.two > div { padding:10px 12px; border-radius:14px; background:rgba(255,255,255,.04); border:1px solid var(--line); }
.two div p { margin:0 0 6px; }
select, input[type=text], input[type=password], input[type=number] {
  width:100%; padding:13px 14px; border-radius:14px; border:1px solid var(--line); background:rgba(255,255,255,.06); color:var(--text); font:inherit; font-size:15px; margin-top:6px;
  outline:none; transition:border-color .15s ease, background .15s ease; }
select:focus, input:focus { border-color:var(--a1); background:rgba(91,140,255,.1); }
select:disabled, input:disabled { opacity:1; color:#fff; }
select option { color:#111; }
.okb { border-color:var(--ok) !important; background:rgba(52,211,153,.14) !important; }
.badb { border-color:var(--bad) !important; background:rgba(251,113,133,.14) !important; }
.irow { display:flex; gap:8px; align-items:stretch; }
.irow input { flex:1; } .irow button { margin-top:6px; padding:0 16px; font-size:14px; background:var(--grad); border-color:transparent; }
.lab { margin-top:14px; font-size:14px; color:#aab6d8; }

/* ---------- natija ---------- */
.ring { --p:0; width:176px; height:176px; margin:6px auto 12px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  background:conic-gradient(var(--a1) calc(var(--p) * 1%), rgba(255,255,255,.08) 0); }
.ring-in { width:146px; height:146px; border-radius:50%; background:#0b1226; display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center; }
.res-big { font-size:30px; font-weight:900; line-height:1.1; background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.gradebox { text-align:center; margin-top:6px; }
.badge { display:inline-block; font-size:42px; font-weight:900; padding:4px 24px; border-radius:20px; letter-spacing:.02em; }
.g-a { background:rgba(52,211,153,.15); color:#6ee7b7; } .g-b { background:rgba(91,140,255,.18); color:#9db8ff; } .g-c { background:rgba(251,191,36,.15); color:#fcd34d; }
.item { padding:12px 0; border-bottom:1px solid var(--line); font-size:14px; line-height:1.55; }
.item:last-child { border:0; }
.good { color:var(--ok); } .bad { color:var(--bad); }
#cert { width:100%; height:auto; border-radius:16px; display:block; }
.crow { display:flex; gap:10px; margin-top:12px; } .crow button { flex:1; font-size:14px; }
#msg, #listMsg { color:#ff9aad; margin:10px 0; min-height:20px; text-align:center; }

/* ---------- ekran ulashish (o'quvchi ko'rinishi) ---------- */
.screen { position:relative; margin-bottom:12px; border-radius:20px; overflow:hidden; background:#000; border:1px solid var(--line); }
.screen video { display:block; width:100%; max-height:46vh; object-fit:contain; background:#000; }
.screen .sbar { display:flex; align-items:center; gap:8px; padding:9px 12px; background:rgba(255,255,255,.06); font-size:13px; font-weight:700; color:#c9d4f5; }
.screen .sbar .sp { flex:1; }
.screen .sbar button { padding:7px 12px; font-size:13px; border-radius:12px; }
.screen.full { position:fixed; top:0; right:0; bottom:0; left:0; z-index:60; margin:0; border-radius:0; border:0; display:flex; flex-direction:column; }
.screen.full .vwrap { flex:1; overflow:auto; -webkit-overflow-scrolling:touch; display:flex; align-items:center; justify-content:center; }
.screen.full .vwrap.zoomed { display:block; }
.screen.full video { max-height:none; width:100%; height:100%; }
.screen.full .vwrap.zoomed video { height:auto; }
.screen.full .sbar { padding-bottom:calc(9px + var(--safe-b)); background:#0b1226; }
.screen:not(.full) .zbtn { display:none; }

@media (prefers-reduced-motion:reduce) { *, *::before, *::after { animation:none !important; transition:none !important; } }