/*
 * Lotus classroom hero — original inline SVG (1024×535) inside Liquid Glass–style chrome.
 * Copy lives ON the whiteboard in the illustration, not as HTML over a raster.
 * Apple material context: https://developer.apple.com/documentation/technologyoverviews/adopting-liquid-glass
 */
.slide-presenter {
  --focus-ring: var(--focus-ring-color, #007aff);
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  width: 100vw;
  max-width: none;
  padding: clamp(1rem, 3vw, 2rem) 0 clamp(1.5rem, 4vw, 2.5rem);
  background: transparent;
}

.slide-presenter__shell {
  width: min(100% - 1.5rem, 1120px);
  margin-inline: auto;
}

.slide-glass {
  background: linear-gradient(
    165deg,
    rgba(255, 255, 255, 0.94) 0%,
    rgba(255, 255, 255, 0.62) 45%,
    rgba(255, 255, 255, 0.38) 100%
  );
  backdrop-filter: var(--liquid-blur, blur(56px) saturate(210%));
  -webkit-backdrop-filter: var(--liquid-blur, blur(56px) saturate(210%));
  border-radius: var(--radius-xl, 22px);
  border: 1px solid var(--glass-edge-hairline, rgba(255, 255, 255, 0.56));
  box-shadow:
    0 1px 0 var(--glass-edge-specular, rgba(255, 255, 255, 0.86)) inset,
    0 32px 84px rgba(0, 0, 0, 0.16),
    0 0 0 1px var(--glass-panel-highlight, rgba(255, 255, 255, 0.48)) inset;
  padding: clamp(1rem, 2.5vw, 1.5rem);
}

.slide-presenter__caption {
  margin: 0 0 0.75rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--label-secondary, rgba(60, 60, 67, 0.6));
  text-align: center;
  font-family: var(--font-body, -apple-system, system-ui, sans-serif);
}

.slide-stage {
  display: flex;
  justify-content: center;
  align-items: center;
}

.slide-canvas {
  position: relative;
  width: 100%;
  max-width: 100%;
  aspect-ratio: 1024 / 535;
  border-radius: var(--radius-lg, 20px);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
  background: #1a6b62;
}

.lotus-classroom-svg {
  display: block;
  width: 100%;
  height: auto;
}

/* SVG hotspot links */
.lotus-classroom-link {
  cursor: pointer;
  outline: none;
}

.lotus-classroom-link rect,
.lotus-classroom-link circle {
  fill: transparent;
  stroke: transparent;
  stroke-width: 3;
  transition: fill 0.15s ease, stroke 0.15s ease;
}

.lotus-classroom-link:hover rect,
.lotus-classroom-link:hover circle,
.lotus-classroom-link:focus-visible rect,
.lotus-classroom-link:focus-visible circle {
  fill: rgba(255, 255, 255, 0.18);
  stroke: rgba(255, 255, 255, 0.85);
}

.lotus-classroom-link:focus {
  outline: none;
}

.lotus-classroom-link:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.slide-presenter__hint {
  margin: 1rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.47;
  color: var(--label-secondary, rgba(60, 60, 67, 0.6));
  text-align: center;
  max-width: 46ch;
  margin-inline: auto;
  font-family: var(--font-body, -apple-system, system-ui, sans-serif);
}

.page--home .home-welcome {
  padding-bottom: var(--space-sm);
}

@supports not (backdrop-filter: blur(1px)) {
  .slide-glass {
    background: var(--glass-panel-bg, rgba(255, 255, 255, 0.92));
  }
}

@media (prefers-color-scheme: dark) {
  .slide-glass {
    background: linear-gradient(
      165deg,
      rgba(58, 58, 60, 0.92) 0%,
      rgba(38, 38, 40, 0.7) 45%,
      rgba(28, 28, 30, 0.56) 100%
    );
    border-color: rgba(255, 255, 255, 0.18);
    box-shadow:
      0 1px 0 rgba(255, 255, 255, 0.16) inset,
      0 32px 84px rgba(0, 0, 0, 0.55),
      0 0 0 1px rgba(255, 255, 255, 0.1) inset;
  }
}