body {
  margin: 0;
  overflow: hidden;
  font-family: "Segoe UI", sans-serif;
  user-select: none;
}

#canvas-container {
  width: 100vw;
  height: 100vh;
}

#ui-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hud-top {
  display: flex;
  justify-content: space-between;
  padding: 20px;
  color: #fff;
  font-size: 20px;
  font-weight: bold;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
}

.stat-box {
  background: rgba(20, 20, 20, 0.8);
  padding: 10px 20px;
  border-radius: 8px;
  border: 1px solid #444;
  backdrop-filter: blur(4px);
}

#message-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(10, 10, 10, 0.95);
  padding: 40px;
  border-radius: 16px;
  text-align: center;
  color: white;
  border: 1px solid #00ddee;
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: 0 0 40px rgba(0, 221, 238, 0.2);
}

.hidden {
  display: none !important;
}

button {
  background: #00ddee;
  color: #000;
  border: none;
  padding: 12px 30px;
  font-size: 18px;
  font-weight: bold;
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  background: #fff;
}

.hint {
  color: #888;
  font-size: 14px;
  margin-top: 10px;
}