:root {
  color-scheme: light dark;
}

* {
  box-sizing: border-box;
}

html,
body {
  font-family: var(--font-sans, system-ui, -apple-system, sans-serif);
  font-size: 1rem;
  margin: 0;
  padding: 0;
  background: transparent;
}

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 400px;
  color: var(--color-text-secondary, #888);
  font-size: 14px;
}

.error {
  padding: 20px;
  color: var(--color-text-danger, #ff6b6b);
}

.threejs-container {
  width: 100%;
  position: relative;
}

.error-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-danger, #ff6b6b);
  background: var(--color-background-secondary, rgba(26, 26, 46, 0.9));
  border-radius: var(--border-radius-md, 8px);
  font-family: var(--font-sans, system-ui);
  padding: 20px;
}

/* Fullscreen button */
.fullscreen-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.6);
  color: white;
  cursor: pointer;
  display: none; /* Hidden by default, shown when fullscreen available */
  align-items: center;
  justify-content: center;
  transition:
    background 0.2s,
    opacity 0.2s;
  opacity: 0; /* Initially invisible, shown on hover */
  z-index: 100;
}

.fullscreen-btn:hover {
  background: rgba(0, 0, 0, 0.8);
  opacity: 1;
}

.fullscreen-btn svg {
  width: 20px;
  height: 20px;
}

.fullscreen-btn .collapse-icon {
  display: none;
}

.fullscreen-btn.available {
  display: flex;
}

/* Show button on container hover */
.threejs-container:hover .fullscreen-btn.available {
  opacity: 0.7;
}

/* Fullscreen mode: swap icons and remove border radius */
.threejs-container.fullscreen .fullscreen-btn .expand-icon {
  display: none;
}

.threejs-container.fullscreen .fullscreen-btn .collapse-icon {
  display: block;
}

.threejs-container.fullscreen canvas {
  border-radius: 0 !important;
}