/* Connect Four — page-specific styles */

.c4-board {
  max-width: 30rem;
  margin: 0 auto 0.5rem;
}

.c4-picker {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.4rem;
  margin-bottom: 0.35rem;
}

.c4-drop {
  font-size: 1rem;
  padding: 0.3rem 0;
  border: 2px solid #e8e2d8;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: transform 0.12s, background 0.15s, color 0.15s, border-color 0.15s;
}

.c4-drop:hover:not(:disabled),
.c4-drop:focus-visible:not(:disabled) {
  transform: translateY(-2px);
  background: var(--color-sky);
  border-color: var(--color-sky);
  color: #fff;
  outline: none;
}

.c4-drop:disabled { opacity: 0.35; cursor: default; }

.c4-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.4rem;
  padding: 0.5rem;
  background: #4a90e2;
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.c4-cell {
  aspect-ratio: 1;
  border-radius: 50%;
  background: #eaf3fb;
  box-shadow: inset 0 3px 6px rgba(0, 0, 0, 0.22);
  transition: background 0.18s;
}

.c4-cell.is-you {
  background: radial-gradient(circle at 35% 30%, #ff8f8f, #e04141);
}

.c4-cell.is-cpu {
  background: radial-gradient(circle at 35% 30%, #ffe58a, #e8b91d);
}

.c4-cell.is-last {
  box-shadow: inset 0 3px 6px rgba(0, 0, 0, 0.22), 0 0 0 3px rgba(255, 255, 255, 0.85);
}

.c4-cell.is-win {
  animation: c4-pop 0.6s ease infinite alternate;
  box-shadow: inset 0 3px 6px rgba(0, 0, 0, 0.22), 0 0 0 4px var(--color-sun);
}

@keyframes c4-pop {
  from { transform: scale(1); }
  to { transform: scale(1.09); }
}

@media (prefers-reduced-motion: reduce) {
  .c4-cell.is-win { animation: none; }
  .c4-drop { transition: none; }
}

@media (max-width: 480px) {
  .c4-grid, .c4-picker { gap: 0.25rem; }
}