:root {
  --ink: #e8f7ff;
  --muted: #9ec9df;
  --accent: #3dd6c6;
  --warn: #ffb4a2;
  --ok: #9dffc0;
  --font: "Nunito", "Noto Sans Myanmar", "Padauk", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--ink);
  background: #024a7a;
}
.bg {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(circle at 15% 10%, rgba(61,214,198,0.35), transparent 42%),
    radial-gradient(circle at 90% 0%, rgba(255,180,162,0.22), transparent 38%),
    linear-gradient(165deg, #012a4a, #013a63 40%, #014f86 100%);
}
.shell {
  position: relative; z-index: 1;
  max-width: 440px;
  margin: 0 auto;
  padding: max(18px, env(safe-area-inset-top)) 16px 36px;
  animation: rise 0.5s ease both;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}
.hero { text-align: center; margin-bottom: 14px; }
.badge {
  display: inline-block;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.18);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.45rem;
}
h1 {
  margin: 0;
  font-size: clamp(1.7rem, 6vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.sub {
  margin: 0.45rem auto 0.9rem;
  max-width: 28em;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.4;
  font-weight: 600;
}
.sub b { color: var(--accent); }
.meta { display: flex; justify-content: center; gap: 0.55rem; flex-wrap: wrap; }
.chip {
  display: inline-flex; gap: 0.35rem; align-items: center;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.14);
  font-size: 0.86rem;
  font-weight: 700;
}
.chip b { color: #fff; font-variant-numeric: tabular-nums; }
.grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 7px;
  padding: 12px;
  border-radius: 20px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 18px 40px rgba(0,20,40,0.35);
}
.cell {
  aspect-ratio: 1;
  border: 0;
  border-radius: 14px;
  font-size: clamp(1.2rem, 5vw, 1.55rem);
  cursor: pointer;
  background: linear-gradient(160deg, rgba(255,255,255,0.18), rgba(255,255,255,0.06));
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.25);
  transition: transform 0.12s ease, outline 0.12s ease, background 0.12s ease;
  -webkit-tap-highlight-color: transparent;
}
.cell:active { transform: scale(0.94); }
.cell.selected {
  outline: 2px solid var(--accent);
  transform: scale(1.06);
  background: linear-gradient(160deg, rgba(61,214,198,0.35), rgba(255,255,255,0.12));
}
.msg {
  min-height: 1.5em;
  text-align: center;
  font-weight: 800;
  margin: 12px 0 8px;
}
.msg.bad { color: var(--warn); }
.msg.ok { color: var(--ok); }
.btn {
  display: block; width: 100%;
  border: 0; border-radius: 999px;
  padding: 13px 18px;
  background: linear-gradient(180deg, #54e0d0, #2bb8aa);
  color: #013047;
  font: inherit; font-weight: 800; font-size: 1rem;
  cursor: pointer;
  box-shadow: 0 8px 0 #1a7f76, 0 14px 28px rgba(0,0,0,0.25);
}
.btn:active { transform: translateY(3px); box-shadow: 0 4px 0 #1a7f76; }
.btn.ghost {
  margin-top: 10px;
  background: rgba(255,255,255,0.12);
  color: #fff;
  box-shadow: 0 4px 0 rgba(0,0,0,0.2);
}
body.lang-my { --font: "Noto Sans Myanmar", "Padauk", "Nunito", system-ui, sans-serif; }