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

body {
  background-color: #0C0D14;
  color: #fff;
  font-family: 'Courier New', monospace;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 16px;
  overflow-x: hidden;
  -webkit-user-select: none;
  user-select: none;
}

.game-container {
  width: 100%;
  max-width: 820px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

/* Header */
.game-header {
  width: 100%;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.game-header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  color: #00ff88;
  letter-spacing: 3px;
  text-transform: uppercase;
}

/* Controls */
.controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.difficulty-selector {
  display: flex;
  gap: 4px;
  background: #1A1B26;
  border-radius: 8px;
  padding: 4px;
}

.diff-btn {
  padding: 8px 14px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: #666;
  font-family: 'Courier New', monospace;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  letter-spacing: 1px;
}

.diff-btn:hover {
  color: #aaa;
}

.diff-btn.active {
  background: #00ff88;
  color: #0C0D14;
  font-weight: 700;
}

.action-buttons {
  display: flex;
  gap: 8px;
}

.action-btn {
  padding: 8px 18px;
  border: 2px solid #00ff88;
  border-radius: 8px;
  background: transparent;
  color: #00ff88;
  font-family: 'Courier New', monospace;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.action-btn:hover {
  background: #00ff88;
  color: #0C0D14;
}

.action-btn.primary {
  background: #00ff88;
  color: #0C0D14;
  font-weight: 700;
  letter-spacing: 3px;
}

.action-btn.primary:hover {
  background: #33ffaa;
  box-shadow: 0 0 20px rgba(0, 255, 136, 0.4);
}

/* Stats */
.stats {
  display: flex;
  gap: 28px;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.stat-label {
  font-size: 0.7rem;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 600;
}

.stat-value {
  font-size: 1.3rem;
  font-weight: 700;
  color: #ffcc00;
  font-variant-numeric: tabular-nums;
}

/* Canvas */
.canvas-wrapper {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
}

#gameCanvas {
  border-radius: 6px;
  box-shadow: 0 0 30px rgba(0, 255, 136, 0.08);
  display: block;
  touch-action: none;
  cursor: grab;
}

#gameCanvas:active {
  cursor: grabbing;
}

#previewCanvas {
  position: absolute;
  top: 8px;
  right: 8px;
  border: 2px solid rgba(0, 255, 136, 0.4);
  border-radius: 4px;
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.6);
  pointer-events: none;
}

/* Win Overlay */
.win-overlay {
  position: fixed;
  inset: 0;
  background: rgba(12, 13, 20, 0.92);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
  z-index: 100;
}

.win-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

.win-modal {
  background: #1A1B26;
  border: 2px solid #00ff88;
  border-radius: 16px;
  padding: 40px 56px;
  text-align: center;
  box-shadow: 0 0 40px rgba(0, 255, 136, 0.25);
  transform: scale(0.9);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.win-overlay.visible .win-modal {
  transform: scale(1);
}

.win-modal h2 {
  font-size: 1.8rem;
  color: #00ff88;
  margin-bottom: 20px;
  letter-spacing: 3px;
  text-transform: uppercase;
}

.win-stats {
  display: flex;
  gap: 32px;
  justify-content: center;
  margin-bottom: 28px;
}

.win-stats p {
  font-size: 1rem;
  color: #888;
  letter-spacing: 1px;
}

.win-stats span {
  color: #ffcc00;
  font-weight: 700;
}

/* Responsive */
@media (max-width: 600px) {
  body {
    padding: 8px;
  }

  .game-container {
    gap: 10px;
  }

  .game-header h1 {
    font-size: 1.3rem;
    letter-spacing: 2px;
  }

  .diff-btn {
    padding: 6px 10px;
    font-size: 0.7rem;
  }

  .action-btn {
    padding: 6px 12px;
    font-size: 0.7rem;
  }

  .stats {
    gap: 18px;
  }

  .stat-value {
    font-size: 1.1rem;
  }

  .win-modal {
    padding: 28px 28px;
  }

  .win-modal h2 {
    font-size: 1.3rem;
  }
}

@media (max-width: 400px) {
  .difficulty-selector {
    gap: 2px;
  }

  .diff-btn {
    padding: 5px 7px;
    font-size: 0.65rem;
  }

  .action-buttons {
    gap: 4px;
  }
}