/* ============================================================
   HETINS ARENA — Sistema de diseño
   Derivado de docs/ARENA-REFERENCIA-DISENO.html (maqueta APROBADA).
   No alterar la paleta sin aprobación de dirección.
   ============================================================ */

:root{
  /* --- azules --- */
  --navy-0:#050B1F; --navy-1:#0A1533; --navy-2:#0F1E47; --navy-3:#16295E;
  /* --- dorados --- */
  --gold:#D4AF37; --gold-2:#F2D06B; --gold-dim:rgba(212,175,55,.35);
  /* --- tinta --- */
  --ink:#EAF0FF; --ink-dim:#8FA0C9;
  /* --- semánticos --- */
  --ok:#38D9A9; --bad:#FF6B6B; --violet:#7C6BFF; --cyan:#39C0ED; --amber:#FF9B6B;
  /* --- cristal --- */
  --glass:rgba(255,255,255,.055); --glass-brd:rgba(255,255,255,.12); --glass-hi:rgba(255,255,255,.20);

  --r-sm:12px; --r-md:16px; --r-lg:22px; --r-xl:28px;
  --ease:cubic-bezier(.22,.8,.24,1);
  --pop:cubic-bezier(.2,1.4,.3,1);
  --font:'Inter',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --font-d:'Sora','Inter',-apple-system,sans-serif;
  --mono:ui-monospace,Menlo,Consolas,monospace;
}

*{margin:0;padding:0;box-sizing:border-box}
/* Cualquier `display` de una clase gana al atributo `hidden`; esta regla
   devuelve a `hidden` el poder de ocultar de verdad. */
[hidden]{display:none !important}
html{-webkit-text-size-adjust:100%}
body{
  min-height:100svh;font-family:var(--font);color:var(--ink);
  background:
    radial-gradient(1200px 800px at 80% -10%, rgba(57,192,237,.12) 0%, transparent 60%),
    radial-gradient(1000px 700px at -10% 110%, rgba(124,107,255,.14) 0%, transparent 55%),
    linear-gradient(160deg, var(--navy-0) 0%, var(--navy-1) 45%, var(--navy-2) 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
::selection{background:rgba(212,175,55,.3)}

#fx{position:fixed;inset:0;z-index:0;pointer-events:none}
.vignette{position:fixed;inset:0;z-index:1;pointer-events:none;
  background:radial-gradient(120% 90% at 50% 40%, transparent 55%, rgba(3,7,20,.55) 100%)}
canvas.confetti{position:fixed;inset:0;z-index:8;pointer-events:none}
.app{position:relative;z-index:2;min-height:100svh;display:flex;flex-direction:column;width:100%;max-width:100vw;overflow-x:clip}

/* ================= BARRA SUPERIOR ================= */
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:12px clamp(14px,3vw,26px);border-bottom:1px solid var(--glass-brd);
  background:linear-gradient(180deg, rgba(10,21,51,.85), rgba(10,21,51,.35));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.brand{display:flex;align-items:center;gap:13px;min-width:0}
.brand__logo{height:38px;width:auto;flex:none;filter:drop-shadow(0 0 14px rgba(212,175,55,.25))}
.brand__rule{width:1px;height:28px;background:linear-gradient(180deg,transparent,var(--glass-hi),transparent);flex:none}
.brand__txt h1{font-family:var(--font-d);font-size:17px;font-weight:800;letter-spacing:.14em;line-height:1.1;white-space:nowrap}
.brand__txt h1 b{color:var(--gold)}
.brand__txt small{display:block;font-size:9px;letter-spacing:.3em;color:var(--ink-dim);font-weight:600;margin-top:2px;white-space:nowrap}

.ecg{width:200px;height:34px;opacity:.9;flex:none}
.ecg polyline{fill:none;stroke:var(--gold);stroke-width:2;stroke-linejoin:round;
  filter:drop-shadow(0 0 6px var(--gold-dim));stroke-dasharray:600;animation:ecgdash 3.2s linear infinite}
@keyframes ecgdash{from{stroke-dashoffset:600}to{stroke-dashoffset:0}}

.chips{display:flex;gap:9px;align-items:center;font-size:12px;color:var(--ink-dim);flex-wrap:wrap;justify-content:flex-end}
.chip{padding:6px 14px;border:1px solid var(--glass-brd);border-radius:999px;background:var(--glass);white-space:nowrap}
.chip b{color:var(--gold)}

/* ================= PRIMITIVAS ================= */
.glass{border:1px solid var(--glass-brd);border-radius:var(--r-lg);background:var(--glass);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.card{border:1px solid var(--glass-brd);border-radius:var(--r-xl);
  background:linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 30px 80px rgba(0,0,0,.45)}
/* La columna del grid debe ceñirse al ancho disponible: con `auto` crece a
   max-content y desborda en móvil (el texto de una línea manda). */
.stage{flex:1;display:grid;grid-template-columns:minmax(0,1fr);place-items:center;
  padding:clamp(16px,3vw,30px);position:relative;width:100%}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-family:var(--font-d);font-weight:700;font-size:15px;padding:14px 26px;border-radius:999px;
  transition:transform .18s var(--ease),box-shadow .3s var(--ease),background .25s,border-color .25s,color .25s}
.btn svg{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.btn--gold{color:#0A1533;background:linear-gradient(135deg,var(--gold),var(--gold-2));box-shadow:0 14px 40px -12px rgba(212,175,55,.6)}
.btn--gold:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 20px 54px -12px rgba(212,175,55,.75)}
.btn--ghost{color:var(--ink-dim);border:1px solid var(--glass-brd);background:var(--glass)}
.btn--ghost:hover{color:var(--ink);border-color:var(--gold-dim)}
.btn:disabled{cursor:not-allowed;background:var(--glass);color:var(--ink-dim);border:1px solid var(--glass-brd);box-shadow:none}
.btn--xl{width:100%;padding:19px 28px;font-size:17px;border-radius:var(--r-md)}
.btn:focus-visible{outline:2px solid var(--gold-2);outline-offset:3px}

/* ================= LOBBY (presentador) ================= */
.lobby{text-align:center;max-width:min(1000px,100%);width:100%}
.lobby .kicker{letter-spacing:.42em;font-size:12px;color:var(--ink-dim);font-weight:700;margin-bottom:14px}
.lobby h2{font-family:var(--font-d);font-size:clamp(26px,4.6vw,54px);font-weight:800;line-height:1.06}
.lobby h2 span{background:linear-gradient(90deg,var(--gold),var(--gold-2),var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.pinwrap{margin:clamp(20px,4vw,34px) auto 8px;display:inline-flex;gap:clamp(6px,1.4vw,12px)}
.pin{width:clamp(48px,9vw,74px);height:clamp(60px,11vw,92px);display:grid;place-items:center;
  font-family:var(--font-d);font-size:clamp(28px,5.5vw,44px);font-weight:800;
  border:1px solid var(--glass-brd);border-radius:18px;color:var(--gold-2);
  background:linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.02));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.12), 0 18px 40px rgba(0,0,0,.35);
  font-variant-numeric:tabular-nums;animation:pinpop .6s var(--pop) backwards}
.pin:nth-child(2){animation-delay:.07s}.pin:nth-child(3){animation-delay:.14s}
.pin:nth-child(4){animation-delay:.21s}.pin:nth-child(5){animation-delay:.28s}.pin:nth-child(6){animation-delay:.35s}
@keyframes pinpop{from{transform:translateY(18px) scale(.7);opacity:0}}
.joinline{color:var(--ink-dim);font-size:clamp(13px,1.6vw,14.5px);margin-top:10px}
.joinline b{color:var(--ink)}
.lobby-grid{display:flex;gap:26px;align-items:center;justify-content:center;margin-top:clamp(22px,3.5vw,34px);flex-wrap:wrap}
.qr{width:150px;height:150px;border-radius:20px;padding:12px;background:#fff;box-shadow:0 24px 60px rgba(0,0,0,.45);flex:none}
.qr svg,.qr img{width:100%;height:100%;display:block}
.joined{min-width:min(340px,100%);max-width:520px;text-align:left;padding:18px 20px;
  border:1px solid var(--glass-brd);border-radius:20px;background:var(--glass);backdrop-filter:blur(10px)}
.joined h4{font-size:12px;letter-spacing:.22em;color:var(--ink-dim);margin-bottom:12px}
.joined h4 b{color:var(--gold);font-size:16px;letter-spacing:0}
.avatars{display:flex;flex-wrap:wrap;gap:8px;max-height:190px;overflow-y:auto}
.avt{padding:7px 13px;border-radius:999px;font-size:13px;font-weight:600;
  border:1px solid var(--glass-brd);background:rgba(255,255,255,.05);animation:pinpop .5s var(--pop) backwards}
.avt i{font-style:normal;margin-right:6px;color:var(--ok)}

/* ================= PREGUNTA ================= */
.qscene{width:min(1180px,100%);display:grid;grid-template-columns:1.25fr .9fr;gap:26px;align-items:stretch}
.qcard{overflow:hidden;display:flex;flex-direction:column}
.qhead{display:flex;justify-content:space-between;align-items:center;gap:14px;
  padding:14px 22px;border-bottom:1px solid var(--glass-brd);font-size:12.5px;color:var(--ink-dim)}
.qhead .tag{color:var(--gold);font-weight:700;letter-spacing:.18em}
.timer{position:relative;width:54px;height:54px;flex:none}
.timer svg{transform:rotate(-90deg)}
.timer circle{fill:none;stroke-width:5}
.timer .bg{stroke:rgba(255,255,255,.12)}
.timer .fg{stroke:var(--gold);stroke-linecap:round;stroke-dasharray:138;
  filter:drop-shadow(0 0 6px var(--gold-dim));transition:stroke-dashoffset 1s linear, stroke .3s}
.timer span{position:absolute;inset:0;display:grid;place-items:center;font-weight:800;font-size:17px;font-variant-numeric:tabular-nums}
.timer.urgent .fg{stroke:var(--bad)}
.timer.urgent span{color:var(--bad)}

.case{padding:20px 26px 6px}
.case .pt{display:flex;gap:14px;align-items:center;margin-bottom:14px}
.case .ptavatar{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;font-size:22px;flex:none;
  background:linear-gradient(135deg,var(--navy-3),var(--violet));border:1px solid var(--glass-brd)}
.case .pt b{font-size:15px}
.case .pt small{display:block;color:var(--ink-dim);font-size:12px}
.case p{font-size:clamp(15px,1.6vw,19px);line-height:1.55;color:#DDE6FF}
.case p mark{background:none;color:var(--gold-2);font-weight:700}

.monitor{margin:18px 26px 20px;border-radius:16px;border:1px solid rgba(56,217,169,.25);
  background:#04140F;padding:10px 16px;display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  box-shadow:inset 0 0 30px rgba(56,217,169,.08)}
.monitor svg{flex:1;min-width:180px;height:44px}
.monitor polyline{fill:none;stroke:var(--ok);stroke-width:2;stroke-dasharray:700;
  filter:drop-shadow(0 0 5px rgba(56,217,169,.6));animation:ecgdash 2.1s linear infinite}
.vitals{display:flex;gap:16px;font-family:var(--mono);font-size:13px}
.vitals div{text-align:right}
.vitals b{display:block;font-size:19px;color:var(--ok)}
.vitals .warn b{color:var(--bad);animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:.35}}

.answers{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:0 26px 24px;margin-top:auto}
.ans{position:relative;display:flex;align-items:center;gap:12px;padding:15px 54px 15px 16px;border-radius:16px;
  border:1px solid var(--glass-brd);background:rgba(255,255,255,.045);overflow:hidden;
  font-size:14.5px;font-weight:600;text-align:left;
  transition:transform .18s, border-color .25s, background .25s, opacity .3s}
.ans:hover{transform:translateY(-2px);border-color:var(--gold-dim)}
.ans .key{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;font-weight:800;flex:none}
.k1{background:rgba(212,175,55,.2);color:var(--gold-2)} .k2{background:rgba(57,192,237,.18);color:var(--cyan)}
.k3{background:rgba(124,107,255,.2);color:#B3A8FF} .k4{background:rgba(255,107,107,.16);color:#FF9B9B}
.ans .pct{position:absolute;right:14px;top:50%;transform:translateY(-50%);font-size:13px;
  font-variant-numeric:tabular-nums;color:var(--ink-dim);opacity:0;transition:opacity .4s}
.ans .bar{position:absolute;left:0;bottom:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--gold),var(--gold-2));transition:width 1s var(--ease)}
.reveal .ans{cursor:default;opacity:.55;transform:none}
.reveal .ans.correct{opacity:1;border-color:var(--ok);background:rgba(56,217,169,.1);
  box-shadow:0 0 0 1px rgba(56,217,169,.35), 0 10px 40px rgba(56,217,169,.15)}
.reveal .ans .pct{opacity:1}

.explain{margin:0 26px;padding:0 18px;border-radius:16px;font-size:14px;line-height:1.6;
  border:1px solid rgba(56,217,169,0);background:rgba(56,217,169,0);color:#CFF5E8;
  opacity:0;transform:translateY(10px);max-height:0;overflow:hidden;transition:.5s var(--ease)}
.reveal .explain{opacity:1;transform:none;max-height:420px;padding:16px 18px;margin-bottom:24px;
  border-color:rgba(56,217,169,.3);background:rgba(56,217,169,.07)}
.explain b{color:var(--ok)}

.live{display:flex;flex-direction:column;gap:18px}
.livecard{border:1px solid var(--glass-brd);border-radius:22px;background:var(--glass);
  backdrop-filter:blur(12px);padding:18px 20px}
.livecard h4{font-size:11.5px;letter-spacing:.24em;color:var(--ink-dim);margin-bottom:14px}
.bigcount{font-family:var(--font-d);font-size:52px;font-weight:800;color:var(--gold-2);line-height:1;font-variant-numeric:tabular-nums}
.bigcount small{font-size:13px;color:var(--ink-dim);font-weight:600;letter-spacing:.1em;font-family:var(--font)}
.teamrow{display:flex;align-items:center;gap:12px;margin-bottom:12px;font-size:13.5px;font-weight:600}
.teamrow:last-child{margin-bottom:0}
.teamrow .dot{width:11px;height:11px;border-radius:50%;flex:none}
.teamrow .nm{flex:none;min-width:96px}
.teamrow .track{flex:1;height:9px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden}
.teamrow .fill{display:block;height:100%;border-radius:99px;width:0;transition:width 1.1s var(--ease)}
.teamrow .pts{width:56px;text-align:right;font-family:var(--mono);color:var(--ink-dim)}

.esperando-abiertas{grid-column:1/-1;text-align:center;padding:30px 20px;color:var(--ink-dim);font-size:15px;line-height:1.9}
.esperando-abiertas b{font-family:var(--font-d);font-size:38px;color:var(--gold-2);display:block;margin-top:6px}
.hipotesis{grid-column:1/-1;display:grid;gap:9px;max-height:340px;overflow-y:auto}
.hip{padding:11px 14px;border-radius:12px;font-size:13.5px;line-height:1.5;
  border:1px solid var(--glass-brd);background:rgba(255,255,255,.04)}
.hip b{display:block;color:var(--gold-2);font-size:12px;margin-bottom:3px}

/* ================= PODIO ================= */
.podioscene{text-align:center;width:min(900px,100%)}
.podioscene h2{font-family:var(--font-d);font-size:clamp(26px,3.6vw,42px);font-weight:800;margin-bottom:6px}
.podioscene h2 span{color:var(--gold)}
.podioscene .sub{color:var(--ink-dim);margin-bottom:40px}
.podio{display:flex;align-items:flex-end;justify-content:center;gap:clamp(10px,2.4vw,22px);height:320px}
.col{width:clamp(100px,20vw,180px);display:flex;flex-direction:column;justify-content:flex-end}
.col .name{font-weight:700;margin-bottom:32px;font-size:clamp(13px,1.6vw,15px)}
.col .name small{display:block;font-weight:500;color:var(--ink-dim);font-size:12px}
.col .block{border-radius:18px 18px 6px 6px;position:relative;
  box-shadow:0 24px 60px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.25);
  transform-origin:bottom;animation:rise 1s var(--ease) backwards}
.col .medal{position:absolute;top:-22px;left:50%;transform:translateX(-50%);
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;font-size:20px;
  background:linear-gradient(135deg,#fff3,#fff0),var(--navy-2);border:1px solid var(--glass-brd)}
.c1 .block{height:230px;background:linear-gradient(180deg,var(--gold),#8A6D1C);animation-delay:.5s}
.c2 .block{height:165px;background:linear-gradient(180deg,#C7D2F0,#5E6C8F);animation-delay:.25s}
.c3 .block{height:120px;background:linear-gradient(180deg,#D8A470,#7A4E2A);animation-delay:.05s}
@keyframes rise{from{transform:scaleY(0)}}
.col .score{position:absolute;bottom:12px;left:0;right:0;font-family:var(--font-d);font-weight:800;font-size:22px;color:#0A1533}

/* ================= VISTA ALUMNO ================= */
.phone{width:300px;border-radius:38px;border:1px solid var(--glass-brd);
  background:linear-gradient(180deg,#0B1737,#08102A);box-shadow:0 40px 100px rgba(0,0,0,.6);
  padding:16px 14px 18px;position:relative}
.phone .notch{width:110px;height:22px;border-radius:99px;background:#020617;margin:0 auto 14px}
.phone .php{display:flex;justify-content:space-between;font-size:11px;color:var(--ink-dim);padding:0 6px 10px}
.phone .php b{color:var(--gold)}
.pans{display:grid;gap:10px}
.pans .pa{padding:20px 16px;border-radius:16px;font-weight:700;font-size:15px;text-align:center;
  border:1px solid var(--glass-brd);transition:transform .12s}
.pans .pa:active{transform:scale(.96)}
.pa1{background:linear-gradient(135deg,rgba(212,175,55,.32),rgba(212,175,55,.1))}
.pa2{background:linear-gradient(135deg,rgba(57,192,237,.3),rgba(57,192,237,.08))}
.pa3{background:linear-gradient(135deg,rgba(124,107,255,.3),rgba(124,107,255,.08))}
.pa4{background:linear-gradient(135deg,rgba(255,107,107,.28),rgba(255,107,107,.08))}
.phone .streak{margin-top:14px;text-align:center;font-size:12.5px;color:var(--ink-dim)}
.phone .streak b{color:var(--gold-2)}

/* ================= PORTADA / ENTRADA ================= */
.join-wrap{width:100%;max-width:min(520px,100%);text-align:center;padding:clamp(24px,4vw,34px)}
.join-wrap .kicker{letter-spacing:.34em;font-size:11.5px;color:var(--ink-dim);font-weight:700}
.join-wrap h2{font-family:var(--font-d);font-size:clamp(25px,6vw,38px);font-weight:800;line-height:1.1;margin:14px 0 8px}
.join-wrap h2 span{background:linear-gradient(90deg,var(--gold),var(--gold-2));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.join-wrap .lede{color:var(--ink-dim);font-size:15px;margin-bottom:26px;text-wrap:pretty}
.pinput{position:relative;margin-bottom:18px}
.pinput input{position:absolute;inset:0;width:100%;height:100%;opacity:0;font-size:16px;cursor:pointer;z-index:2}
.pincells{display:flex;gap:clamp(5px,1.6vw,9px);justify-content:center}
.pincell{flex:1 1 0;min-width:0;max-width:62px;aspect-ratio:3/4;display:grid;place-items:center;
  font-family:var(--font-d);font-size:clamp(22px,7vw,32px);font-weight:800;color:var(--gold-2);
  border:1px solid var(--glass-brd);border-radius:14px;
  background:linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.1);font-variant-numeric:tabular-nums;
  transition:border-color .3s,box-shadow .3s,transform .3s,background .3s}
.pincell.on{border-color:var(--gold);box-shadow:0 0 0 3px rgba(212,175,55,.16),inset 0 1px 0 rgba(255,255,255,.14)}
.pincell.typed{animation:cellpop .32s var(--pop)}
@keyframes cellpop{from{transform:scale(.82)}}
.pinput.err .pincell{border-color:rgba(255,107,107,.6)}
.pinput.err{animation:shake .45s}
@keyframes shake{10%,90%{transform:translateX(-3px)}30%,70%{transform:translateX(5px)}50%{transform:translateX(-6px)}}
.hint{margin-top:16px;font-size:13px;color:var(--ink-dim);display:flex;align-items:center;gap:8px;justify-content:center}
.msg{margin-top:14px;font-size:13.5px;min-height:20px;color:var(--bad)}

.foot{padding:22px;text-align:center;font-size:12px;color:var(--ink-dim);border-top:1px solid rgba(255,255,255,.06)}
.foot a:hover{color:var(--gold-2)}

.scene{display:none;width:100%;min-width:0;place-items:center}
.scene.on{display:grid;animation:sceneIn .55s var(--ease)}
@keyframes sceneIn{from{opacity:0;transform:translateY(26px) scale(.985)}}

/* ================= RESPONSIVE ================= */
@media (max-width:960px){
  .qscene{grid-template-columns:1fr}
  .live{flex-direction:row;flex-wrap:wrap}
  .livecard{flex:1;min-width:240px}
  .ecg{display:none}
}
@media (max-width:640px){
  .answers{grid-template-columns:1fr}
  .brand__txt small{display:none}
  .chips{display:none}
  .podio{height:240px}
  .c1 .block{height:170px}.c2 .block{height:125px}.c3 .block{height:92px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}

/* Los tres primeros, por su nombre, sobre el podio de equipos. */
.mejores{display:flex;justify-content:center;flex-wrap:wrap;gap:10px 22px;margin-bottom:14px}
.mejores .mejor{display:inline-flex;align-items:center;gap:8px;font-size:17px;color:#fff;font-weight:600}
.mejores .mejor b{font-size:21px}
.mejores .mejor i{font-style:normal;color:var(--gold-2,#E8C766);font-weight:800;font-variant-numeric:tabular-nums}