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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: #1a2a3a;
}

#canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
}

#canvas.sailing {
  cursor: grabbing;
}

#ui {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 10;
  color: #f5f0e6;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
  pointer-events: none;
  user-select: none;
}

#ui h1 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

#ui p {
  font-size: 0.9rem;
  opacity: 0.9;
  line-height: 1.5;
}

#ui .hint {
  margin-top: 4px;
  font-size: 0.8rem;
  opacity: 0.75;
}

kbd {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  font-size: 0.75rem;
  font-family: inherit;
}