/* Tic-Tac-Toe Custom Styles */

/* Game board cell styling */
.cell {
  background-color: #f1f5f9;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  box-shadow: inset 0 0 0 2px #e2e8f0;
}

.dark .cell {
  background-color: #334155;
  box-shadow: inset 0 0 0 2px #475569;
}

/* Cell hover effect */
.cell:hover {
  transform: scale(1.02);
  box-shadow: inset 0 0 0 2px #c4b5fd;
}

.dark .cell:hover {
  box-shadow: inset 0 0 0 2px #7c3aed;
}

/* X and O styles */
.cell.x::before,
.cell.x::after {
  content: '';
  position: absolute;
  width: 80%;
  height: 10%;
  background-color: #7c3aed;
  border-radius: 999px;
}

.dark .cell.x::before,
.dark .cell.x::after {
  background-color: #a78bfa;
}

.cell.x::before {
  transform: rotate(45deg);
}

.cell.x::after {
  transform: rotate(-45deg);
}

.cell.o::before,
.cell.o::after {
  content: '';
  position: absolute;
  border-radius: 50%;
}

.cell.o::before {
  width: 70%;
  height: 70%;
  border: 10px solid #7c3aed;
}

.dark .cell.o::before {
  border-color: #a78bfa;
}

/* Animation for X and O markers */
@keyframes appear {
  0% { opacity: 0; transform: scale(0.5); }
  100% { opacity: 1; transform: scale(1); }
}

.cell.x::before,
.cell.x::after,
.cell.o::before {
  animation: appear 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

/* Winning line styles */
.win-line {
  position: absolute;
  background-color: #10b981;
  z-index: 1;
  opacity: 0.7;
}

.dark .win-line {
  background-color: #34d399;
}

/* Button press effects */
button:active {
  transform: scale(0.95);
}

/* Game Mode Select Styling */
select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 0.5rem center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: 2.5rem;
}

/* Mobile optimizations */
@media (max-width: 640px) {
  .cell {
    font-size: 2rem;
  }
  
  .cell.o::before {
    border-width: 8px;
  }
}