:root {
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0b0c10;
  color: #e8e8ec;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

#game-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px;
}

h1 {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #f2f2f5;
}

#canvas-wrap {
  position: relative;
}

canvas {
  background: #14161c;
  border: 2px solid #2a2d36;
  border-radius: 8px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  cursor: pointer;
  display: block;
}

#next-level-btn {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  padding: 10px 22px;
  font-size: 1rem;
  font-weight: 600;
  color: #0b0c10;
  background: #5cff8a;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(92, 255, 138, 0.35);
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}

#next-level-btn:hover {
  transform: translate(-50%, -50%) scale(1.05);
  box-shadow: 0 6px 20px rgba(92, 255, 138, 0.5);
}

.hidden {
  display: none;
}

.hint {
  margin: 0;
  font-size: 0.9rem;
  color: #9a9ea8;
}

kbd {
  background: #2a2d36;
  border: 1px solid #3a3f4b;
  border-radius: 4px;
  padding: 2px 6px;
  font-family: inherit;
  font-size: 0.85rem;
}