:root{
  --bg:#150f26; --surface:#211838; --line:#3a2d5c;
  --text:#ece7ff; --muted:#a79ccb; --accent:#ffb547; --accent-ink:#2a1a00; --danger:#ff5d73;
  --font:"Bricolage Grotesque",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box;margin:0}
html,body{height:100%}
body{background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.5}
[hidden]{display:none!important}
button,input{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

/* Lobby */
.lobby{max-width:560px;margin:0 auto;padding:clamp(24px,6vw,64px) 20px;display:grid;gap:20px}
.brand{display:flex;align-items:center;gap:14px}
.brand h1{font-size:clamp(2.4rem,8vw,3.6rem);font-weight:800;letter-spacing:-.03em;line-height:1}
.tagline{color:var(--muted);max-width:44ch}
.wave{display:inline-flex;align-items:center;gap:3px;height:28px}
.brand .wave{height:44px;gap:4px}
.wave i{width:5px;border-radius:3px;background:var(--accent);height:40%;animation:pulse 1.1s ease-in-out infinite}
.brand .wave i{width:6px}
.wave i:nth-child(2){animation-delay:.15s}.wave i:nth-child(3){animation-delay:.3s}
.wave i:nth-child(4){animation-delay:.45s}.wave i:nth-child(5){animation-delay:.6s}
@keyframes pulse{0%,100%{height:25%}50%{height:100%}}

.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px;display:grid;gap:14px}
.card h2,.card label[for]{font-size:1rem;font-weight:600}
.hint{color:var(--muted);font-size:.9rem}
.row{display:flex;gap:8px}
.row input,.text{flex:1;min-width:0;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px 12px}

.btn{border:0;border-radius:12px;padding:12px 20px;font-weight:600;cursor:pointer;transition:transform .12s}
.btn:active{transform:scale(.97)}
.btn.primary{background:var(--accent);color:var(--accent-ink);font-size:1.05rem;padding:14px 20px}
.btn.secondary{background:var(--line);color:var(--text)}
.btn.small{padding:8px 14px;font-size:.9rem}
.icon{background:var(--line);border:0;border-radius:10px;width:44px;cursor:pointer;display:grid;place-items:center}

.choices{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.choice input{position:absolute;opacity:0}
.choice-body{display:grid;gap:4px;justify-items:start;padding:16px;border:2px solid var(--line);border-radius:14px;cursor:pointer;height:100%;transition:border-color .15s,background .15s}
.choice-body small{color:var(--muted);font-size:.82rem;line-height:1.3}
.choice input:checked + .choice-body{border-color:var(--accent);background:rgba(255,181,71,.08)}
.choice input:focus-visible + .choice-body{outline:3px solid var(--accent);outline-offset:2px}
.error{color:var(--danger);font-size:.92rem}

/* Sala */
.call{position:fixed;inset:0;display:grid;grid-template-rows:auto 1fr;grid-template-columns:1fr;background:var(--bg)}
.call.chat-open{grid-template-columns:1fr 320px}
.topbar{grid-column:1/-1;display:flex;align-items:center;gap:10px;padding:10px 16px;border-bottom:1px solid var(--line)}
.count{background:var(--line);border-radius:999px;padding:2px 10px;font-size:.85rem;font-weight:600}
.status{flex:1;color:var(--muted);font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.main{padding:12px 12px 84px;min-height:0;min-width:0}
.grid{--cols:1;height:100%;display:grid;grid-template-columns:repeat(var(--cols),minmax(0,1fr));grid-auto-rows:minmax(0,1fr);gap:10px}
.grid.has-spot{grid-template-rows:minmax(0,1fr) 120px;grid-auto-rows:120px}
.tile{position:relative;min-height:0;background:#000;border:2px solid var(--line);border-radius:14px;overflow:hidden;cursor:pointer;transition:border-color .15s,box-shadow .15s}
.tile video{width:100%;height:100%;object-fit:cover;display:block}
.tile.screen video{object-fit:contain}
.tile.local:not(.screen) video{transform:scaleX(-1)}
.tile.spot{grid-column:1/-1;grid-row:1}
.tile.speaking{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent)}
.tile figcaption{position:absolute;left:8px;bottom:8px;display:flex;gap:6px;align-items:center;background:rgba(21,15,38,.8);border-radius:8px;padding:2px 10px;font-size:.85rem}
.tile .mic{display:none;color:var(--danger)}
.tile.muted .mic{display:inline-flex}
.avatar{position:absolute;inset:0;display:none;place-items:center;background:var(--surface);font-size:clamp(2rem,8vw,4rem);font-weight:800;color:var(--accent)}
.tile.cam-off .avatar{display:grid}

.chat{display:none;flex-direction:column;border-left:1px solid var(--line);background:var(--surface);min-height:0;padding-bottom:84px}
.chat-open .chat{display:flex}
.messages{flex:1;overflow-y:auto;padding:14px;display:grid;align-content:start;gap:10px}
.msg{font-size:.92rem;word-break:break-word}
.msg b{display:flex;justify-content:space-between;align-items:center;font-size:.78rem;color:var(--accent)}
.msg .txt{display:block}
.del{border:0;background:transparent;color:var(--danger);cursor:pointer;font-size:.75rem;font-weight:600}
.msg.me b{color:var(--muted)}
.msg.sys{color:var(--muted);font-style:italic;font-size:.82rem}
.chat-form{display:flex;gap:8px;padding:10px 12px;border-top:1px solid var(--line)}

.controls{position:fixed;left:calc(50% - 160px * var(--chat,1));transform:translateX(-50%);bottom:16px;display:flex;gap:10px;padding:10px;background:rgba(21,15,38,.9);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:16px}
.call:not(.chat-open) .controls{left:50%}
.ctrl{border:0;border-radius:10px;padding:11px 16px;background:var(--line);cursor:pointer;font-weight:600}
.ctrl[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink)}
#toggleChat[aria-pressed="false"]{background:var(--line);color:var(--text)}
.ctrl.danger{background:var(--danger);color:#fff}

.toast{position:fixed;left:50%;bottom:90px;transform:translate(-50%,20px);background:var(--text);color:var(--bg);padding:10px 18px;border-radius:999px;font-weight:600;opacity:0;pointer-events:none;transition:.2s;z-index:10}
.toast.show{opacity:1;transform:translate(-50%,0)}

.modbtn{position:absolute;top:8px;right:8px;border:0;border-radius:8px;padding:4px 10px;font-size:.8rem;font-weight:600;background:rgba(21,15,38,.85);color:var(--text);cursor:pointer}
.tile.host figcaption::after{content:"Anfitrión";background:var(--accent);color:var(--accent-ink);border-radius:5px;padding:0 6px;font-size:.72rem;font-weight:600}
.chat-head{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;border-bottom:1px solid var(--line);font-weight:600}
.chat-form .text:disabled{opacity:.5}
.btn[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink)}
.btn.danger{background:var(--danger);color:#fff}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.6);display:grid;place-items:center;z-index:20;padding:20px}
.modal-box{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px;width:min(380px,100%);display:grid;gap:12px}
.modal-box h2{font-size:1.1rem}
.modal-actions{display:grid;gap:8px}
.modal-actions .btn{text-align:left}

@media (max-width:800px){
  .call.chat-open{grid-template-columns:1fr}
  .chat{position:fixed;inset:auto 0 0 0;height:55%;border-left:0;border-top:1px solid var(--line);border-radius:18px 18px 0 0;z-index:5}
  .controls{left:50%!important;z-index:6}
}
@media (max-width:520px){
  .choices{grid-template-columns:1fr}
  .row{flex-wrap:wrap}.row input{flex-basis:100%}
  .ctrl{padding:10px 10px;font-size:.85rem}
}
@media (prefers-reduced-motion:reduce){
  .wave i{animation:none;height:70%}
  *{transition:none!important}
}