:root{
  --bg:#12141A;
  --bg-alt:#181B23;
  --surface:#1D212B;
  --surface-2:#252A36;
  --border:rgba(255,255,255,0.08);
  --border-strong:rgba(255,255,255,0.16);
  --text:#ECEDF2;
  --text-dim:#9297A8;
  --accent:#FFB43C;
  --accent-ink:#1A1200;
  --accent-2:#5B8CFF;
  --danger:#C93C3C;
  --radius:10px;
  --font-display:'Space Grotesk',sans-serif;
  --font-body:'Inter',sans-serif;
  --font-mono:'JetBrains Mono',monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{background:var(--bg);color:var(--text);font-family:var(--font-body);line-height:1.5;-webkit-font-smoothing:antialiased}
[hidden]{display:none !important}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
button{font-family:inherit}

.brand{display:flex;align-items:center;gap:12px}
.brand img{width:34px;height:34px;border-radius:9px;display:block}
.brand b{font-family:var(--font-display);font-size:19px;letter-spacing:-0.02em;display:block}
.mono{font-family:var(--font-mono);font-weight:500;font-size:12px;letter-spacing:0.08em;color:var(--text-dim)}

/* ----- páginas simples (lobby, admin, início) ----- */
.page{min-height:100%;display:flex;align-items:center;justify-content:center;padding:24px}
.card{width:100%;max-width:460px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:28px;display:flex;flex-direction:column;gap:16px}
.card.wide{max-width:640px}
.card h1{font-family:var(--font-display);font-size:24px;letter-spacing:-0.02em}
.card p{color:var(--text-dim);font-size:14px}
.field{display:flex;flex-direction:column;gap:6px;font-size:14px}
.field span{color:var(--text-dim)}
.field input,.field select{min-height:46px;padding:0 14px;border-radius:var(--radius);border:1px solid var(--border-strong);background:var(--bg);color:var(--text);font-size:15px;font-family:inherit}
.check{display:flex;align-items:center;gap:10px;font-size:14px;min-height:36px}
.check input{width:20px;height:20px;accent-color:var(--accent)}
.btn{min-height:46px;padding:0 18px;border-radius:var(--radius);border:1px solid var(--border-strong);background:transparent;color:var(--text);font-size:14px;font-weight:600;cursor:pointer}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn:disabled{opacity:0.6;cursor:default}
.error{color:#F4A6A0;font-size:14px;min-height:20px}
.row{display:flex;flex-wrap:wrap;gap:10px}
.linkbox{display:flex;flex-direction:column;gap:6px;padding:12px 14px;border-radius:var(--radius);background:var(--surface-2);font-size:14px;word-break:break-all}
.list{display:flex;flex-direction:column;gap:8px}
.list a{display:block;padding:12px 14px;border-radius:var(--radius);background:var(--surface-2);color:var(--text);text-decoration:none;font-size:14px}

/* ----- sala ----- */
#app{height:100%;display:flex;flex-direction:column}
.top{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:12px 20px;background:rgba(18,20,26,0.9);border-bottom:1px solid var(--border)}
.pill{padding:6px 12px;border-radius:999px;background:var(--surface);border:1px solid var(--border-strong);font-size:13px;color:#C9CCD8}
.main{flex:1;min-height:0;display:flex;gap:16px;padding:16px 20px}
.stage{flex:1;min-width:0;position:relative;overflow:auto;border-radius:14px;background:var(--bg-alt);border:1px solid var(--border);padding:12px}
.tiles{display:grid;gap:12px;height:100%}
.tiles.grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));grid-auto-rows:minmax(200px,1fr)}
.tiles.with-screen{display:flex;flex-wrap:wrap;align-content:flex-start;gap:12px;height:100%}
.tiles.with-screen .tile{flex:0 0 180px;height:120px;order:1}
.tile{position:relative;border-radius:12px;overflow:hidden;background:linear-gradient(160deg,var(--surface-2),var(--bg-alt));border:2px solid transparent;min-height:0}
.tile.speaking{border-color:var(--accent)}
.tile video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.tile.local video{transform:scaleX(-1)}
.tile.screen{background:#000}
.tiles.with-screen .tile.screen{order:2;flex:1 1 100%;height:calc(100% - 132px);min-height:240px}
.tile.screen video{object-fit:contain;transform:none}
.avatar{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.avatar::before{content:attr(data-i);width:72px;height:72px;border-radius:999px;background:var(--accent);color:var(--accent-ink);display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:600}
.label{position:absolute;left:10px;bottom:10px;max-width:calc(100% - 20px);padding:4px 10px;border-radius:8px;background:rgba(18,20,26,0.82);font-size:13px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.empty{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--text-dim);font-size:15px;text-align:center;padding:24px}

.panel{flex:0 0 360px;max-width:100%;display:flex;flex-direction:column;border-radius:14px;background:var(--surface);border:1px solid var(--border);overflow:hidden}
.panel header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--border);font-family:var(--font-display);font-size:16px;font-weight:700}
.panel header button{min-height:36px;padding:0 12px;border-radius:8px;border:1px solid var(--border-strong);background:transparent;color:var(--text);font-size:13px;cursor:pointer}
.view{flex:1;min-height:0;display:flex;flex-direction:column}
.msgs{flex:1;min-height:0;overflow:auto;padding:14px 16px;display:flex;flex-direction:column;gap:10px;font-size:14px}
.msg{max-width:88%;padding:9px 13px;border-radius:12px;background:var(--surface-2);overflow-wrap:anywhere}
.msg.me{align-self:flex-end;background:var(--accent);color:var(--accent-ink)}
.msg small{display:block;font-size:12px;opacity:0.75;margin-bottom:2px}
.compose{display:flex;gap:8px;padding:12px;border-top:1px solid var(--border)}
.compose input{flex:1;min-width:0;min-height:44px;padding:0 14px;border-radius:var(--radius);border:1px solid var(--border-strong);background:var(--bg);color:var(--text);font-size:14px;font-family:inherit}
.items{flex:1;min-height:0;overflow:auto;padding:14px 16px;display:flex;flex-direction:column;gap:8px}
.item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 13px;border-radius:var(--radius);background:var(--surface-2);font-size:14px}
.item .meta{min-width:0}
.item .meta b{display:block;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.item .meta span{font-size:12px;color:var(--text-dim)}
.item a{color:var(--accent);font-weight:600;font-size:13px;text-decoration:none;white-space:nowrap}
.foot{padding:12px;border-top:1px solid var(--border);display:flex}
.foot .btn{flex:1}

.controls{display:flex;flex-wrap:wrap;justify-content:center;gap:16px;padding:12px 20px 18px;background:var(--bg-alt);border-top:1px solid var(--border)}
.ctl{display:flex;flex-direction:column;align-items:center;gap:6px}
.ctl button{width:52px;height:52px;border:0;border-radius:12px;background:var(--surface-2);color:var(--text);display:flex;align-items:center;justify-content:center;cursor:pointer}
.ctl button svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.ctl button[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink)}
.ctl button.off{background:var(--danger);color:#fff}
.ctl button.leave{width:72px;background:var(--danger);color:#fff}
.ctl span{font-family:var(--font-mono);font-weight:500;font-size:12px;color:var(--text-dim)}

#toast{position:fixed;left:50%;bottom:100px;transform:translateX(-50%);max-width:90%;padding:10px 16px;border-radius:10px;background:var(--surface-2);border:1px solid var(--border-strong);font-size:14px;z-index:20}

@media (max-width:820px){
  .top{padding:10px 14px}
  .main{flex-direction:column;padding:10px;gap:10px}
  .stage{flex:1 1 200px;min-height:200px;padding:8px}
  .panel{flex:0 0 38vh;height:38vh}
  .tiles.grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));grid-auto-rows:minmax(140px,1fr);gap:8px}
  .tiles.with-screen .tile{flex:0 0 110px;height:76px}
  .tiles.with-screen .tile.screen{height:calc(100% - 88px);min-height:150px}
  .controls{gap:10px 12px;padding:10px 10px 14px}
  .ctl button{width:46px;height:46px}
  .ctl button.leave{width:64px}
  .ctl span{font-size:11px}
  .avatar::before{width:52px;height:52px;font-size:20px}
}
@media (prefers-reduced-motion:reduce){*{transition:none !important;animation:none !important}}

/* ----- seletor de idioma ----- */
.lang{display:flex;gap:2px;padding:3px;border-radius:10px;background:var(--bg);border:1px solid var(--border);margin-left:auto}
.lang button{min-height:36px;min-width:44px;padding:0 10px;border:0;border-radius:7px;background:transparent;color:var(--text);font-family:var(--font-mono);font-weight:500;font-size:12px;letter-spacing:0.08em;cursor:pointer}
.lang button[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink)}
.top .lang{margin-left:0}

/* ----- mão levantada ----- */
.hand{position:absolute;top:10px;right:10px;width:42px;height:42px;border-radius:999px;background:var(--accent);color:var(--accent-ink);display:flex;align-items:center;justify-content:center;box-shadow:0 2px 10px rgba(0,0,0,0.4);transform-origin:70% 90%;animation:wave 1.4s ease-in-out infinite}
.hand svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
@keyframes wave{0%,100%{transform:rotate(0)}25%{transform:rotate(14deg)}75%{transform:rotate(-10deg)}}
.tile.more{order:99;display:flex;align-items:center;justify-content:center;background:var(--surface)}
.more-text{font-family:var(--font-mono);font-weight:500;font-size:14px;color:var(--text-dim);text-align:center;padding:8px}