/* EduFabTech — game-math.css  (Mental maths; önek gm-math-) */
.gm-math-box {
  width: min(560px, 100%);
  max-width: 420px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-family: var(--sans);
  color: var(--text);
}
.gm-math-status {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
  text-align: center;
  font-variant-numeric: tabular-nums;
}
.gm-math-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 14px 12px;
  text-align: center;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.gm-math-line {
  display: flex;
  align-items: baseline;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.35em;
  font-family: var(--mono);
  font-size: clamp(1.9rem, 9vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}
.gm-math-eq { color: var(--muted); }
.gm-math-out {
  display: inline-block;
  min-width: 2.6em;
  padding: 0 0.2em;
  border-bottom: 3px solid var(--brand);
  color: var(--brand);
  text-align: center;
}
.gm-math-out.gm-math-empty { color: var(--muted); }
.gm-math-fb {
  min-height: 1.4em;
  margin: 10px 0 0;
  font-size: 0.95rem;
  font-weight: 600;
}
.gm-math-right { border-color: var(--brand); background: color-mix(in srgb, var(--brand) 12%, var(--card)); }
.gm-math-right .gm-math-fb { color: var(--brand); }
.gm-math-wrong { border-color: var(--err); background: color-mix(in srgb, var(--err) 12%, var(--card)); }
.gm-math-wrong .gm-math-fb { color: var(--err); }
.gm-math-wrong .gm-math-out { color: var(--err); border-bottom-color: var(--err); text-decoration: line-through; }

.gm-math-pad {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
}
.gm-math-key {
  min-height: 56px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-family: var(--mono);
  font-size: 1.45rem;
  font-weight: 700;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background-color 0.08s ease, transform 0.08s ease;
}
.gm-math-key:hover { background: var(--card); }
.gm-math-key:active { transform: scale(0.96); background: var(--border); }
.gm-math-key:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.gm-math-key-back { color: var(--muted); font-family: var(--sans); }
.gm-math-key-ok {
  background: var(--brand);
  border-color: var(--brand);
  color: #06120c;
  font-family: var(--sans);
  font-size: 1.15rem;
}
.gm-math-key-ok:hover { background: color-mix(in srgb, var(--brand) 88%, #ffffff); }
.gm-math-key-ok:active { background: color-mix(in srgb, var(--brand) 80%, #000000); }

.gm-math-still .gm-math-card,
.gm-math-still .gm-math-key { transition: none; }
.gm-math-still .gm-math-key:active { transform: none; }
@media (prefers-reduced-motion: reduce) {
  .gm-math-card, .gm-math-key { transition: none; }
  .gm-math-key:active { transform: none; }
}
@media (max-width: 380px) {
  .gm-math-key { min-height: 52px; }
  .gm-math-card { padding: 18px 10px 10px; }
}