* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: radial-gradient(circle at top, #fef3c7, #e0e7ff);
  color: #0f172a;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

/* Embedded app styles for Farcaster/Base */
body.embedded {
  background: transparent !important;
  padding: 0 !important;
}

body.embedded .app {
  margin: 0 !important;
  border-radius: 0 !important;
  min-height: 100vh !important;
  width: 100vw !important;
  box-shadow: none !important;
}

.app {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.15);
  backdrop-filter: blur(8px);
  width: min(95vw, 500px);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

header {
  text-align: center;
}

h1 {
  font-size: 2.5rem;
  margin: 0;
  color: #1e293b;
}

.subtitle {
  color: #64748b;
  margin: 0.5rem 0 0;
}

.stats {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.chip {
  background: #e2e8f0;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  color: #475569;
}

.board-wrapper {
  display: flex;
  justify-content: center;
}

.board {
  width: min(80vmin, 400px);
  height: min(80vmin, 400px);
  display: grid;
  gap: 4px;
  padding: 8px;
  background: #cbd5e1;
  border-radius: 16px;
  box-shadow: inset 0 4px 12px rgba(15, 23, 42, 0.2);
}

.tile {
  border-radius: 12px;
  transition: background-color 0.2s ease;
}

.tile.flooding {
  animation: pulse 0.3s ease;
}

@keyframes pulse {
  0% { transform: scale(0.9); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

.color-buttons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  max-width: 300px;
  margin: 0 auto;
}

.color-btn {
  border: none;
  border-radius: 12px;
  height: 60px;
  cursor: pointer;
  transition: transform 0.2s ease, filter 0.2s ease;
}

.color-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.color-btn.active {
  opacity: 0.7;
  transform: scale(0.95);
}

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

.reset-btn, .sound-btn, .new-game-btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.reset-btn:hover, .sound-btn:hover, .new-game-btn:hover {
  transform: translateY(-2px);
}

.reset-btn {
  background: #3b82f6;
  color: white;
}

.sound-btn {
  background: #64748b;
  color: white;
}

.new-game-btn {
  background: #dc2626;
  color: white;
}

.overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  z-index: 1000;
}

.overlay.hidden {
  display: none;
}

.overlay-card {
  background: white;
  padding: 2rem;
  border-radius: 20px;
  text-align: center;
  max-width: 300px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.overlay-card h2 {
  margin-bottom: 1rem;
  color: #1e293b;
}

.overlay-card p {
  margin-bottom: 1.5rem;
  color: #64748b;
}

.overlay-card button {
  padding: 0.75rem 2rem;
  border: none;
  border-radius: 12px;
  background: #3b82f6;
  color: white;
  font-weight: 600;
  cursor: pointer;
}

@media (max-width: 480px) {
  .app {
    padding: 1.5rem;
    border-radius: 20px;
  }
  
  body.embedded .app {
    padding: 1rem !important;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  .stats {
    flex-direction: column;
    align-items: center;
  }
  
  .chip {
    width: 100%;
    text-align: center;
  }
  
  .color-buttons {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .game-controls {
    flex-direction: column;
  }
}