/* FPS Counter Styles */
.fps-counter {
    position: fixed;
    top: 16px;
    left: 16px;
    background: rgba(0,0,0,0.7);
    color: #fff;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 1.1em;
    z-index: 2000;
    display: block !important;
}
body {
    margin: 0;
    overflow: hidden;
    background-color: #000;
    font-family: sans-serif;
}


#webgpu-canvas {
    display: block;
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    pointer-events: auto;
}

.control-panel {
    position: fixed;
    left: 50%;
    bottom: 32px;
    transform: translateX(-50%);
    z-index: 1000;
    background: rgba(0,0,0,0.7);
    color: white;
    padding: 18px 32px;
    border-radius: 16px;
    display: flex;
    flex-direction: row;
    gap: 32px;
    font-family: sans-serif;
    pointer-events: auto;
}

/* Hidden by default; toggled with .visible */
.control-panel.hidden {
  opacity: 0;
  transform: translateY(12px) translateX(-50%);
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}
.control-panel.visible {
  opacity: 1;
  transform: translateY(0) translateX(-50%);
  pointer-events: auto;
  transition: opacity 180ms ease, transform 180ms ease;
}

/* Menu toggle button at bottom-left */
.menu-toggle {
  position: fixed;
  left: 16px;
  bottom: 16px;
  z-index: 2000;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: rgba(0,0,0,0.7);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.08);
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  backdrop-filter: blur(6px);
}
.menu-toggle:hover { background: rgba(255,255,255,0.04); }
.menu-toggle:active { transform: translateY(1px); }
.menu-toggle.active { background: rgba(74,144,226,0.95); }

.control-label {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.reset-button {
  margin-top: 2px;
  padding: 6px 12px;
  font-size: 1em;
  color: white;
  background-color: #333;
  border: 1px solid #555;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.reset-button:hover {
  background-color: #444;
}

/* Custom Checkbox */
.control-label input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  background-color: #555;
  border: 1px solid #888;
  border-radius: 4px;
  cursor: pointer;
  position: relative;
  transition: background-color 0.2s;
}

.control-label input[type="checkbox"]:checked {
  background-color: #4a90e2;
  border-color: #4a90e2;
}

.control-label input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 6px;
  width: 4px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}