/* Reset and base styles */
body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: #111;
  color: #fff;
  overflow: hidden; /* desktop default; mobile overrides below */
}

/* Panel container (desktop defaults) */
.controls-panel {
  position: absolute;
  top: 20px;
  left: 20px;
  width: 230px;
  background: rgba(20, 20, 20, 0.9);
  padding: 15px;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  z-index: 10;
  font-size: 14px;
}

/* Section headers */
.controls-panel h3 {
  margin: 0 0 10px;
  font-size: 15px;
  font-weight: 600;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  padding-bottom: 4px;
}

/* Color inputs */
.color-input-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.color-input-group label { flex: 1; margin-right: 8px; }
.color-input-group input[type="color"] {
  width: 38px;
  height: 24px;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
}

/* Radio group styling */
.radio-group { display: flex; flex-direction: column; gap: 5px; }
.radio-option { display: flex; align-items: center; cursor: pointer; }
.radio-option input[type="radio"] { margin-right: 8px; }
.radio-swatch {
  display: inline-block;
  width: 18px; height: 18px; border-radius: 4px;
  border: 1px solid rgba(255,255,255,0.2); margin-right: 6px;
}

/* Hover/focus */
input[type="color"]:hover,
input[type="radio"]:hover + .radio-swatch { outline: 2px solid rgba(255,255,255,0.3); }
input[type="radio"]:checked + .radio-swatch { outline: 2px solid #4cafef; }

/* Fullscreen canvas (single, stable rule) */
canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100svh; /* avoids address-bar jump */
  display: block;
  touch-action: none; /* helps OrbitControls on touch */
}

  /* Full-width grabber button */
.panel-button {
display: block;
width: 100%;
height: 40px;
line-height: 40px;
border: none;
border-radius: 8px;
margin: 0 0 8px 0;
background: rgba(255,255,255,0.08);
color: #ccc;
font-size: 15px;
font-weight: 600;
text-align: center;
cursor: pointer;
}
.panel-button:hover {
      color:#44d62c;
      transition: 0.7s;
      background-color: #63666a;
  }
/* Hide the grabber on desktop */
.panel-grabber { display: none; }
/* -------- Mobile-only: bottom sheet + minimize -------- */
@media (max-width: 640px) {
  body {
    overflow: auto; /* allow scroll when sheet is open */
  }

  .controls-panel {
    position: fixed;
    left: 0; right: 0; bottom: 0; top: auto;
    width: auto;
    max-height: 70svh;
    overflow: auto;
    border-radius: 14px 14px 0 0;
    padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
    box-shadow: 0 -6px 24px rgba(0,0,0,.5);
    font-size: clamp(14px, 3.8vw, 16px);
    -webkit-overflow-scrolling: touch;
    background: rgba(20,20,20,0.92);
    z-index: 10;

    /* Animation */
    transition: transform 220ms cubic-bezier(.2, .7, .3, 1);
    will-change: transform;
  }

  /* When closed, slide down so only grabber is visible */
  .controls-panel.closed {
    transform: translateY(calc(100% - 63px));
  }

  /* Full-width grabber button */
  .panel-grabber {
    display: block;
    width: 100%;
    height: 40px;
    line-height: 40px;
    border: none;
    border-radius: 8px;
    margin: 0 0 8px 0;
    background: rgba(255,255,255,0.08);
    color: #ccc;
    font-size: 15px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
  }

  /* Bigger tap targets */
  .color-input-group input[type="color"],
  .radio-option input[type="radio"] {
    min-width: 20px;
    min-height: 20px;
  }
.screenshot-fab {
  position: fixed;
  right: 16px;
  top: 16px;
  z-index: 11; 
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  backdrop-filter: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.screenshot-fab svg {
  display: block;
}

@media (max-width: 640px) {
  .screenshot-fab {
    bottom: calc(16px + env(safe-area-inset-bottom));
  }
}

}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}