/* UNICOACH Games — giao diện dùng chung cho LinkSnap và Read The Room (Ear Snap tự chứa CSS riêng, cùng ngôn ngữ thiết kế). */
html,body{margin:0}[hidden]{display:none!important}
:root{
  color-scheme: dark;
  --ink:#0b111c;
  --panel:#121b2b;
  --line:#24324a;
  --fg:#e6ecf5;
  --muted:#8b9ab3;
  --amber:#ffb547;
  --ok:#3fd9a8;
  --bad:#ff5d6c;
  --f-display:"Chakra Petch","Arial Narrow",system-ui,sans-serif;
  --f-body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-ipa:"Charis SIL","Doulos SIL","Gentium Plus","Times New Roman",serif;
}
*{box-sizing:border-box}
html,body{min-height:100%}
body{background:var(--ink);color:var(--fg);font-family:var(--f-body);font-size:15px;line-height:1.5;-webkit-tap-highlight-color:transparent}
.app{min-height:100dvh;display:flex;flex-direction:column;max-width:720px;margin:0 auto;padding:12px 16px;gap:12px}
.hud{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.brand{font-family:var(--f-display);font-weight:700;letter-spacing:.14em;font-size:15px;color:var(--amber)}
.brand span{color:var(--muted);font-weight:500;letter-spacing:.08em;margin-left:8px;font-size:12px}
.stats{display:flex;gap:14px;font-variant-numeric:tabular-nums}
.stat{display:flex;flex-direction:column;align-items:flex-end;line-height:1.1}
.stat b{font-family:var(--f-display);font-size:22px}
.stat b.hearts{font-size:17px;letter-spacing:.1em;color:var(--bad);line-height:1.4}
.stat small{font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.stage{position:relative;flex:1 1 auto;min-height:150px;border:1px solid var(--line);border-radius:6px;background:
  linear-gradient(var(--line) 1px,transparent 1px) 0 0/100% 25%,
  linear-gradient(90deg,var(--line) 1px,transparent 1px) 0 0/10% 100%, var(--ink);overflow:hidden}
.stage canvas{position:absolute;inset:0;width:100%;height:100%}
.prompt{position:absolute;left:0;right:0;top:10px;text-align:center;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);padding-inline:8px}
.prompt .lv{display:block;margin-bottom:2px;color:var(--fg)}
.flash{position:absolute;left:0;right:0;bottom:20px;text-align:center;font-family:var(--f-display);font-size:24px;opacity:0;transition:opacity .15s;padding-inline:12px}
.flash.on{opacity:1}.flash.ok{color:var(--ok)}.flash.up{color:var(--amber)}
.timer{position:absolute;left:0;bottom:0;height:4px;background:var(--amber);width:0}
.gates{display:grid;gap:10px}
.gate{position:relative;border:1px solid var(--line);background:var(--panel);color:var(--fg);border-radius:6px;padding:14px 14px 14px 40px;min-height:64px;display:flex;flex-direction:column;justify-content:center;gap:4px;cursor:pointer;font:inherit;text-align:left;touch-action:manipulation;transition:transform .06s,border-color .1s,background .1s;min-width:0}
.gate:active{transform:scale(.99)}
.gate:focus-visible,.btn:focus-visible,.chip:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--amber);outline-offset:2px}
.gate .key{position:absolute;left:14px;top:50%;transform:translateY(-50%);font-family:var(--f-display);font-size:13px;color:var(--muted)}
.gate .t{font-size:18px;font-weight:600;line-height:1.35;overflow-wrap:anywhere}
.gate .why{font-size:13px;color:var(--muted);line-height:1.45}
.gate.right{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 14%,var(--panel))}
.gate.wrong{border-color:var(--bad);background:color-mix(in srgb,var(--bad) 16%,var(--panel))}
.gate.right .why,.gate.wrong .why{color:var(--fg)}
.gate:disabled{cursor:default}
.foot{font-size:12px;color:var(--muted);text-align:center}
.tipbox{border:1px solid var(--amber);border-radius:6px;padding:12px 14px;background:color-mix(in srgb,var(--amber) 8%,var(--panel));display:grid;gap:8px}
.tipbox p{margin:0}
.shake{animation:shake .32s}
@keyframes shake{20%{transform:translateX(-8px)}40%{transform:translateX(7px)}60%{transform:translateX(-5px)}80%{transform:translateX(3px)}}
@media (prefers-reduced-motion:reduce){.shake{animation:none}.gate{transition:none}}
.overlay{position:fixed;inset:0;background:color-mix(in srgb,var(--ink) 94%,transparent);display:flex;align-items:flex-start;justify-content:center;overflow-y:auto;padding:24px 16px calc(24px + env(safe-area-inset-bottom,0px));z-index:5}
.card{width:100%;max-width:560px;display:flex;flex-direction:column;gap:16px}
h1{font-family:var(--f-display);font-size:clamp(38px,10vw,60px);line-height:1;margin:0;color:var(--amber);letter-spacing:.04em;text-wrap:balance}
h2{font-family:var(--f-display);font-size:28px;margin:0;line-height:1.1;text-wrap:balance}
.lede{margin:0;max-width:60ch}
.label{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 6px}
.row{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1px solid var(--line);background:var(--panel);color:var(--fg);border-radius:999px;padding:6px 12px;font:inherit;font-size:13px;cursor:pointer}
.chip[aria-pressed="true"]{border-color:var(--amber);color:var(--amber)}
.chip.mode{border-radius:6px;padding:10px 14px;font-family:var(--f-display);font-weight:700;font-size:15px;letter-spacing:.04em}
input[type=text]{background:var(--panel);border:1px solid var(--line);color:var(--fg);border-radius:6px;padding:10px 12px;font:inherit;width:100%}
input[type=text]:disabled{opacity:.7}
.consent{display:flex;gap:8px;align-items:flex-start;margin-top:10px;font-size:13px;cursor:pointer}
.consent input{margin-top:3px;accent-color:var(--amber)}
.btn{border:0;border-radius:6px;padding:14px 18px;font-family:var(--f-display);font-weight:700;font-size:18px;letter-spacing:.08em;cursor:pointer;background:var(--amber);color:var(--ink)}
.btn.ghost{background:transparent;color:var(--fg);border:1px solid var(--line);font-size:14px;padding:10px 14px}
.btn.sm{font-size:13px;padding:8px 12px;letter-spacing:.04em}
a.btn{text-decoration:none;text-align:center;display:inline-block}
.btns{display:flex;gap:8px;flex-wrap:wrap}
.btns .btn{flex:1 1 auto}
.note{font-size:12px;color:var(--muted);margin:0}
.warn{border:1px solid var(--bad);border-radius:6px;padding:10px 12px;font-size:13px}
.miss{border:1px solid var(--bad);border-radius:6px;padding:12px 14px;display:grid;gap:6px;background:color-mix(in srgb,var(--bad) 8%,var(--ink))}
.big{font-family:var(--f-display);font-size:56px;line-height:1;font-variant-numeric:tabular-nums}
.cta{border:1px solid var(--line);border-radius:6px;padding:14px;background:var(--panel);display:grid;gap:10px}
.back{color:var(--muted);font-size:12px;text-decoration:none}
.back:hover{color:var(--amber)}
table{width:100%;border-collapse:collapse;font-size:13px;font-variant-numeric:tabular-nums}
td,th{padding:6px 4px;border-bottom:1px solid var(--line);text-align:left}
th{font-weight:500;color:var(--muted);font-size:11px;letter-spacing:.1em;text-transform:uppercase}
.bar{height:6px;background:var(--line);border-radius:3px;overflow:hidden;min-width:60px}
.bar i{display:block;height:100%;background:var(--amber)}