/* CoolSchool shared design system — extracted from tabuada.html / verbos.html.
   Used by index.html now; tabuada.html/verbos.html adopt it in a later phase. */
:root{
  --paper:#fbfdff; --grid:#dce8f6; --ink:#1e2a5a; --muted:#66729a;
  --blue:#2f6bff; --blue-dark:#1d47b8; --blue-soft:#e6eeff;
  --pencil:#ffc93c; --line:#cfdcef; --red:#e4353b;
  --ok:#12833f; --ok-soft:#d9f7e4; --bad:#c62828; --bad-soft:#ffe1e1;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0}
body{
  min-height:100vh; color:var(--ink); padding:24px 16px 40px;
  font-family:"Arial Rounded MT Bold","Trebuchet MS","Segoe UI",Verdana,sans-serif;
  background-color:var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:28px 28px;
}
.app{max-width:820px;margin:0 auto}
.screen{display:none}
.screen.active{display:block}
.card{background:#fff;border:3px solid var(--ink);border-radius:22px;padding:28px;box-shadow:8px 8px 0 var(--ink)}
.sub{color:var(--muted);margin:12px 0 0;font-size:1.05rem;line-height:1.45;max-width:58ch}
.label{font-size:1.05rem;font-weight:700;margin:28px 0 10px;display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}
.row{display:flex;flex-wrap:wrap;gap:10px}
.chip{font:inherit;font-weight:800;font-size:1.35rem;color:var(--ink);background:#fff;border:3px solid var(--ink);border-radius:14px;padding:12px 0;min-width:72px;cursor:pointer;box-shadow:0 4px 0 var(--ink);transition:transform .06s,box-shadow .06s}
.chip:active{transform:translateY(3px);box-shadow:0 1px 0 var(--ink)}
.chip.on{background:var(--blue);color:#fff}
.chip small{display:block;font-size:1rem;line-height:1.2;margin-top:2px}
.tabs{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.tabs .chip{flex:1;min-width:200px;font-size:1.1rem;padding:12px 10px;text-align:center}
.chip.sm{font-size:1.15rem;min-width:56px;padding:10px 0}
.chip:focus-visible,.btn:focus-visible,.link:focus-visible{outline:4px solid var(--pencil);outline-offset:2px}
.link{font:inherit;font-size:.95rem;background:none;border:none;color:var(--blue-dark);cursor:pointer;padding:4px 6px;text-decoration:underline;text-underline-offset:3px}
.btn{font:inherit;font-weight:800;font-size:1.2rem;border:3px solid var(--ink);border-radius:16px;padding:14px 24px;cursor:pointer;background:var(--blue);color:#fff;box-shadow:0 5px 0 var(--ink);transition:transform .06s,box-shadow .06s}
.btn:active{transform:translateY(4px);box-shadow:0 1px 0 var(--ink)}
.btn:disabled{background:#c9d2e6;color:#66729a;cursor:not-allowed;transform:none;box-shadow:0 5px 0 #9aa6c2;border-color:#9aa6c2}
.btn.ghost{background:#fff;color:var(--ink)}
.btn.yellow{background:var(--pencil);color:var(--ink)}
.btn.big{width:100%;font-size:1.55rem;margin-top:28px;padding:18px}
.hint{color:var(--bad);font-weight:700;min-height:1.2em;margin:8px 0 0}
.muted{color:var(--muted)}

.top{display:flex;gap:10px;flex-wrap:wrap}
.pill{flex:1;min-width:100px;border:3px solid var(--ink);border-radius:14px;padding:6px 12px;text-align:center;background:#fff}
.pill small{display:block;font-size:.85rem;color:var(--muted)}
.pill span{font-size:1.5rem;font-weight:800;font-variant-numeric:tabular-nums}
.bar{height:14px;background:var(--blue-soft);border:2px solid var(--ink);border-radius:99px;overflow:hidden;margin:16px 0 4px}
.bar div{height:100%;width:0;background:var(--blue);transition:width .3s}
.feedback{text-align:center;font-size:1.5rem;font-weight:800;min-height:2em;margin:0}
.feedback.good{color:var(--ok)}
.feedback.bad{color:var(--bad)}

.result-head{display:flex;gap:28px;align-items:center;flex-wrap:wrap}
.ring{--p:0;--c:#999;width:190px;height:190px;border-radius:50%;border:3px solid var(--ink);background:conic-gradient(var(--c) calc(var(--p)*1%),#eef2f9 0);display:grid;place-items:center;flex-shrink:0}
.ring div{width:136px;height:136px;border-radius:50%;background:#fff;border:3px solid var(--ink);display:grid;place-items:center;font-size:2.7rem;font-weight:800}
.result-text{flex:1;min-width:230px}
.msg{font-size:1.6rem;font-weight:800;margin:0 0 14px;line-height:1.2}
.stats{display:flex;gap:10px;flex-wrap:wrap}
.scale{position:relative;height:24px;border:3px solid var(--ink);border-radius:99px;margin:36px 0 8px;background:linear-gradient(90deg,#ef4444 0%,#f97316 40%,#facc15 65%,#22c55e 90%,#22c55e 97%,#9333ea 100%)}
.marker{position:absolute;top:-14px;width:10px;height:46px;background:var(--ink);border:3px solid #fff;border-radius:6px;transform:translateX(-50%);left:0;transition:left 1s cubic-bezier(.2,.8,.2,1)}
.ticks{position:relative;height:1.3em;font-size:.85rem;color:var(--muted)}
.ticks span{position:absolute;transform:translateX(-50%)}
.wrong{display:flex;flex-wrap:wrap;gap:8px}
.w{background:var(--bad-soft);color:var(--bad);border:2px solid var(--bad);border-radius:10px;padding:6px 12px;font-weight:700}
.w s{opacity:.65;font-weight:400;margin-left:4px}
.unlocks{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:14px}
.unlock{border:3px dashed var(--line);border-radius:18px;padding:18px;text-align:center}
.unlock .ico{font-size:3rem;line-height:1}
.unlock h3{margin:8px 0 4px;font-size:1.3rem}
.unlock p{margin:0 0 14px;color:var(--muted);min-height:2.6em}
.unlock.locked .ico{filter:grayscale(1);opacity:.4}
.unlock.open{border:3px solid var(--ink);background:#fff8dc;box-shadow:5px 5px 0 var(--ink)}
.unlock .btn{width:100%}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.actions .btn{flex:1;min-width:200px}
.newrec{display:inline-block;background:var(--pencil);border:2px solid var(--ink);font-weight:800;border-radius:99px;padding:3px 12px;font-size:.95rem;margin-bottom:10px}

.game-head{display:flex;align-items:center;gap:14px;margin-bottom:14px;flex-wrap:wrap}
.game-head h2{margin:0;font-size:1.6rem}
.game-head .btn{padding:8px 16px;font-size:1rem}
canvas{display:block;margin:0 auto;border-radius:14px;border:3px solid var(--ink);touch-action:none;cursor:pointer}
.cvwrap{position:relative}
.lockbox{position:absolute;inset:0;display:grid;place-content:center;text-align:center;gap:6px;background:rgba(255,255,255,.95);border-radius:14px;padding:20px}
.lockbox .ico{font-size:3.5rem}
.lockbox h3{margin:0;font-size:1.7rem}
.lockbox p{margin:0 0 12px;color:var(--muted);font-size:1.05rem}
.passinfo{margin:0 0 12px;font-weight:700;color:var(--blue-dark)}
.game-help{text-align:center;margin:12px 0 0;line-height:1.5}

/* ---------- shared page chrome (header / footer / cookie banner) ---------- */
.site-header{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:0 0 18px;padding-top:4px}
.brand{font-size:1.4rem;font-weight:800;color:var(--ink);text-decoration:none}
.site-nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.site-nav a{color:var(--blue-dark);text-decoration:none;font-weight:700}
.site-nav a:hover{text-decoration:underline}
.lang-switch{display:flex;gap:6px}
.lang-switch button{font:inherit;font-weight:800;font-size:.9rem;color:var(--ink);background:#fff;border:3px solid var(--ink);border-radius:10px;padding:6px 12px;cursor:pointer;box-shadow:0 3px 0 var(--ink)}
.lang-switch button:active{transform:translateY(2px);box-shadow:0 1px 0 var(--ink)}
.lang-switch button.on{background:var(--blue);color:#fff}
.site-footer{margin:32px 0 0;padding-top:18px;border-top:3px solid var(--line);color:var(--muted);font-size:.9rem;line-height:1.6}
.footer-grid{display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:center}
.footer-company{display:flex;flex-direction:column;gap:2px}
.footer-company b{color:var(--ink)}
.footer-company a{color:var(--blue-dark);text-decoration:none;font-weight:700}
.footer-company a:hover{text-decoration:underline}
.footer-lang{display:flex;justify-content:center}
.footer-links{display:flex;gap:16px;justify-content:flex-end;flex-wrap:wrap}
.footer-links a{color:var(--blue-dark);text-decoration:none;font-weight:700}
.footer-links a:hover{text-decoration:underline}
.footer-note{margin:14px 0 0;text-align:center;font-size:.8rem}
@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr;text-align:center}
  .footer-company{align-items:center}
  .footer-links{justify-content:center}
}
.cookie-banner{
  position:fixed;left:16px;right:16px;bottom:16px;z-index:100;max-width:720px;margin:0 auto;
  background:#fff;border:3px solid var(--ink);border-radius:18px;box-shadow:6px 6px 0 var(--ink);
  padding:16px 18px;display:flex;gap:14px;align-items:center;flex-wrap:wrap;
}
.cookie-banner p{margin:0;flex:1;min-width:220px;font-size:.95rem;line-height:1.5}
.cookie-banner .btn{white-space:nowrap}

@media (max-width:520px){
  .card{padding:20px;box-shadow:5px 5px 0 var(--ink)}
  .cookie-banner{left:10px;right:10px;bottom:10px;padding:14px}
}
@media (prefers-reduced-motion:reduce){.pop,.shake{animation:none}.marker,.bar div{transition:none}}