/* ====== Reset mínimo ====== */
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,'Helvetica Neue',Arial;
  color:#e8eef7;
  background: #0b1220;
}

/* ====== Layout ====== */
.wrap{max-width:960px;margin:0 auto;padding:12px 12px 28px}

/* Topbar */
.topbar{
  display:flex;align-items:flex-start;justify-content:space-between;
  gap:12px;padding:10px 12px;border-bottom:1px solid rgba(255,255,255,.06);
  background:linear-gradient(180deg,#0f1726 0%,#0b1220 100%);
  position:sticky;top:0;z-index:10;
}
.brand{font-size:22px;letter-spacing:.3px}
.userbox{font-size:14px;text-align:right}
.userline{opacity:.9}
.actions{margin-top:6px;display:flex;gap:8px;justify-content:flex-end;flex-wrap:wrap}

/* Controles */
.controls{margin:14px auto 12px;max-width:520px}
.label{display:block;margin-bottom:6px;opacity:.85}
.row{display:flex;gap:10px;align-items:center}
.input{
  flex:1;min-width:0;height:46px;border-radius:12px;border:1px solid rgba(255,255,255,.08);
  background:#0f1824;color:#e8eef7;padding:0 14px;font-size:16px;outline:none;
}
.btn{
  border:0;border-radius:14px;padding:12px 16px;font-weight:600;cursor:pointer;
  background:#1e2a3a;color:#e8eef7;transition:transform .12s ease,filter .12s ease,background .12s ease;
}
.btn:active{transform:translateY(1px)}
.btn:hover{filter:brightness(1.06)}
.btn-main{background:linear-gradient(180deg,#ff6b7c,#ff4f66)}
.btn-subtle{background:#223046}
.btn-wide{width:100%;margin-top:12px}
.btn-small{padding:8px 12px;border-radius:10px}

/* ====== Board & Grid (responsive 3x3) ====== */
.board{max-width:min(94vw, 420px);margin:12px auto 18px;padding:0 6px}
.grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:12px;justify-items:center;
}

/* Carta/casilla */
.card{
  width:28vw;height:28vw;          /* escala con pantalla */
  max-width:140px;max-height:140px;/* límites en pantallas grandes */
  background:linear-gradient(180deg,#16202b,#0f1822);
  border:2px solid rgba(255,255,255,.08);
  border-radius:18px;
  box-shadow:0 6px 14px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.06);
  display:flex;align-items:center;justify-content:center;
  transition:transform .12s ease,border-color .12s ease,box-shadow .12s ease;
  touch-action:manipulation;
}
.card:active{transform:scale(.98)}
.card.revealed{border-color:rgba(255,255,255,.18)}
.card.fail{border-color:#ff5268;box-shadow:0 6px 16px rgba(255,82,104,.25)}
.card.win {border-color:#18d39e;box-shadow:0 6px 16px rgba(24,211,158,.2)}
.card .emoji{font-size:clamp(28px,7.3vw,44px);line-height:1}

/* Leyenda */
.legend{display:flex;flex-wrap:wrap;gap:10px;row-gap:8px;max-width:520px;margin:0 auto 10px}
.pill{
  background:#121c2b;border:1px solid rgba(255,255,255,.08);
  padding:8px 12px;border-radius:999px;font-size:13px;opacity:.92;
}

/* Historial */
.history{max-width:820px;margin:18px auto 0}
.history__head{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.history h2{margin:0 8px 0 0}
.chk{display:flex;gap:8px;align-items:center;font-size:14px;opacity:.9}
.table{
  margin-top:10px;border:1px solid rgba(255,255,255,.06);border-radius:12px;overflow:hidden;
  background:#0f1824;min-height:48px;
}

/* Botones esquina (por si ya los tenías) */
.topbar .btn-subtle{background:#283651}

/* Media pequeños */
@media (max-width:360px){
  .grid{gap:10px}
  .card{width:29vw;height:29vw}
}

/* Dark scroll on iOS */
*{ -webkit-tap-highlight-color: transparent; }