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

body {
  background: #0a0a1a;
  overflow: hidden;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

#gameCanvas {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
}

#menu {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

#menu h1 {
  font-size: 72px;
  color: #0ff;
  text-shadow: 0 0 20px #0ff, 0 0 40px #0ff, 0 0 80px #08f;
  margin-bottom: 60px;
  letter-spacing: 8px;
}

#levelButtons {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

#levelButtons button {
  background: transparent;
  border: 2px solid #0ff;
  color: #0ff;
  padding: 16px 40px;
  font-size: 20px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

#levelButtons button:hover {
  background: #0ff;
  color: #0a0a1a;
  box-shadow: 0 0 20px #0ff;
}

#controls {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 8px 16px;
  background: rgba(0, 0, 0, 0.6);
  border-bottom: 1px solid rgba(0, 255, 255, 0.2);
}

.ctrl-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.ctrl-label {
  color: rgba(255, 255, 255, 0.5);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-right: 4px;
}

#controls button {
  background: rgba(0, 255, 255, 0.08);
  border: 1px solid rgba(0, 255, 255, 0.3);
  color: #0ff;
  padding: 4px 12px;
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s;
}

#controls button:hover {
  background: rgba(0, 255, 255, 0.2);
  border-color: #0ff;
}

#controls button.active {
  background: rgba(0, 255, 255, 0.3);
  border-color: #0ff;
  color: #fff;
  box-shadow: 0 0 8px rgba(0, 255, 255, 0.3);
}

.btn-icon {
  vertical-align: -2px;
  margin-right: 2px;
  filter: drop-shadow(0 0 3px rgba(0, 255, 255, 0.5));
}

#homeBtn:hover .btn-icon {
  filter: drop-shadow(0 0 6px #0ff);
}

.sfx-btn {
  font-size: 12px !important;
  padding: 4px 8px !important;
}

.sfx-btn:active {
  background: rgba(255, 255, 0, 0.3) !important;
  border-color: #ff0 !important;
}