/**
 * Shared Demo Styles for iced_nodegraph WASM Demos
 *
 * These styles are used by all embedded demos in the rustdoc documentation.
 * The demos render WebGPU content into a canvas element.
 */

/* Demo container - provides the frame for the WASM canvas */
#demo-container {
  position: relative;
  width: 100%;
  height: 600px;
  background: #1e1e2e;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  margin: 2em 0;
}

/* Canvas positioning - ensures WASM canvas fills the container */
#demo-container canvas,
#demo-container #demo-canvas-container {
  display: block !important;
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  height: 100% !important;
  pointer-events: auto !important;
}

/* Loading overlay - shown while WASM initializes */
#demo-loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: #89b4fa;
  z-index: 10;
}

#demo-loading p {
  margin: 0;
  font-size: 0.875rem;
}

/* Loading spinner animation */
.demo-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid #313244;
  border-top-color: #89b4fa;
  border-radius: 50%;
  animation: demo-spin 1s linear infinite;
  margin: 0 auto 1em;
}

@keyframes demo-spin {
  to {
    transform: rotate(360deg);
  }
}

/* Error panel - shown when WebGPU is unavailable */
#demo-error {
  display: none;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 1.5rem 2rem;
  background: #f38ba8;
  color: #1e1e2e;
  border-radius: 8px;
  text-align: center;
  font-weight: 500;
  z-index: 10;
}

#demo-error strong {
  display: block;
  margin-bottom: 0.5rem;
}