/* Connect 4 Styles */
.game-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 2rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.controls {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.control-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.controls select, .controls button {
  padding: 0.5rem 1rem;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  font-family: inherit;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.controls button {
  background: var(--accent-light, #3b82f6);
  font-weight: 600;
  border: none;
}

.controls button:hover {
  background: var(--accent, #2563eb);
  transform: translateY(-2px);
}

.turn-indicator {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  height: 30px;
  color: #fff;
}

.connect4-board {
  background-color: #0b5394;
  padding: 10px;
  border-radius: 12px;
  display: inline-flex;
  flex-direction: column;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
  border: 4px solid #073763;
}

.board-row {
  display: flex;
}

.cell {
  width: 60px;
  height: 60px;
  background-color: #1a1a2e;
  border-radius: 50%;
  margin: 5px;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  box-shadow: inset 0 3px 5px rgba(0,0,0,0.5);
  position: relative;
  overflow: hidden;
  transition: background-color 0.3s ease;
}

.cell::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: 50%;
  box-shadow: inset 0 5px 10px rgba(255,255,255,0.1);
  pointer-events: none;
}

.cell:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.piece {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  box-shadow: inset 0 -3px 5px rgba(0,0,0,0.4), 0 2px 4px rgba(0,0,0,0.3);
  position: absolute;
  top: 3px;
  animation: dropIn 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.piece.player1 {
  background: radial-gradient(circle at 30% 30%, #ff6b6b, #c0392b);
}

.piece.player2 {
  background: radial-gradient(circle at 30% 30%, #f1c40f, #f39c12);
}

.piece.winning-piece::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  animation: pulse 1s infinite alternate;
}

@keyframes dropIn {
  0% { transform: translateY(-400px); opacity: 0; }
  60% { transform: translateY(20px); }
  80% { transform: translateY(-10px); }
  100% { transform: translateY(0); opacity: 1; }
}

@keyframes pulse {
  0% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
  100% { transform: translate(-50%, -50%) scale(1.5); opacity: 0; }
}

@media (max-width: 600px) {
  .cell {
    width: 40px;
    height: 40px;
    margin: 3px;
  }
  .piece {
    width: 36px;
    height: 36px;
    top: 2px;
  }
}