.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.2rem;
}

.container h1 {
  font-size: 1.8rem;
  letter-spacing: 0.2em;
}

h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-magenta));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 40px rgba(0, 255, 242, 0.3);
  animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

.canvas-wrapper {
  position: relative;
  border-radius: 50%;
  padding: 4px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-magenta));
  box-shadow:
    0 0 60px rgba(0, 255, 242, 0.3),
    0 0 120px rgba(255, 0, 170, 0.2),
    inset 0 0 60px rgba(0, 0, 0, 0.5);
  max-width: 90vw;
  max-height: 70vh;
  aspect-ratio: 1;
}

.canvas-wrapper.shape-circle {
  border-radius: 50%;
}

.canvas-wrapper.shape-rectangle {
  border-radius: 12px;
}

.canvas-wrapper.shape-hexagon {
  border-radius: 0;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

canvas#simulation {
  display: block;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--canvas-bg-inner) 0%, var(--canvas-bg-outer) 100%);
  cursor: crosshair;
  touch-action: none;
  max-width: 100%;
  height: auto;
  position: relative;
  z-index: 1;
}

.starfield-canvas {
  position: absolute;
  top: 4px;
  left: 4px;
  width: calc(100% - 8px);
  height: calc(100% - 8px);
  pointer-events: none;
  z-index: 0;
  border-radius: 50%;
}

.shape-rectangle .starfield-canvas {
  border-radius: 8px;
}

.shape-hexagon .starfield-canvas {
  border-radius: 0;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.shape-rectangle canvas {
  border-radius: 8px;
}

.shape-hexagon canvas {
  border-radius: 0;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  font-family: 'Orbitron', sans-serif;
  font-size: 1rem;
  letter-spacing: 0.1em;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
}

.stat-label {
  font-size: 0.6rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-cyan);
  text-shadow: 0 0 20px var(--accent-cyan);
}

.stat-value.magenta { color: var(--accent-magenta); text-shadow: 0 0 20px var(--accent-magenta); }
.stat-value.yellow { color: var(--accent-yellow); text-shadow: 0 0 20px var(--accent-yellow); }
.stat-value.green { color: var(--accent-green); text-shadow: 0 0 20px var(--accent-green); }

.controls {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

button {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--accent-cyan);
  background: transparent;
  color: var(--accent-cyan);
  cursor: pointer;
  transition: all 0.3s ease;
}

button:hover {
  background: rgba(0, 255, 242, 0.1);
  box-shadow: 0 0 20px rgba(0, 255, 242, 0.3);
}

button.active {
  background: rgba(0, 255, 242, 0.3);
  box-shadow: 0 0 20px rgba(0, 255, 242, 0.5);
}

button.secondary {
  border-color: var(--text-muted);
  color: var(--text-muted);
}

button.secondary:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

button.danger {
  border-color: var(--accent-magenta);
  color: var(--accent-magenta);
}

button.danger:hover {
  background: rgba(255, 0, 170, 0.1);
  box-shadow: 0 0 20px rgba(255, 0, 170, 0.3);
}

button.danger.active {
  background: rgba(255, 0, 170, 0.3);
}

.controls-secondary select {
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--text-muted);
  color: var(--text-primary);
  padding: 0.5rem 0.8rem;
  font-family: 'Orbitron', sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  outline: none;
}

.controls-secondary select:hover,
.controls-secondary select:focus {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.controls-secondary select option {
  background: var(--bg-dark);
  color: var(--text-primary);
}

.mode-indicator {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: center;
  min-height: 1.2rem;
}

.mode-indicator.active {
  color: var(--accent-yellow);
}

.keyboard-hints {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-align: center;
  letter-spacing: 0.05em;
}

@media (hover: none) {
  .keyboard-hints {
    display: none;
  }
}

.paused-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: 'Orbitron', sans-serif;
  font-size: 2rem;
  color: var(--accent-cyan);
  text-shadow: 0 0 30px var(--accent-cyan);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}

.paused-overlay.visible {
  opacity: 1;
}