/* ---- Nematostella Toolkit — modern polish ---------------------------- */

:root {
  --md-primary-fg-color:        #009688;
  --md-primary-fg-color--light: #4db6ac;
  --md-primary-fg-color--dark:  #00695c;
  --md-accent-fg-color:         #00bcd4;
}

/* Landing page hero ---------------------------------------------------- */
.md-typeset h1:first-of-type {
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.15rem;
  line-height: 1.6;
  max-width: 46rem;
  color: var(--md-default-fg-color--light);
  margin: 0.2rem 0 1.6rem;
}

.hero-footnote {
  font-size: 0.75rem;
  color: var(--md-default-fg-color--light);
}

/* Grid cards ----------------------------------------------------------- */
.md-typeset .grid.cards > ul > li {
  border-radius: 0.8rem;
  border: 1px solid var(--md-default-fg-color--lightest);
  padding: 1.1rem 1.2rem;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.md-typeset .grid.cards > ul > li:hover {
  border-color: var(--md-accent-fg-color);
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.10);
  transform: translateY(-2px);
}

.md-typeset .grid.cards .lg.middle {
  color: var(--md-primary-fg-color);
}

/* Sticky tabs get a subtle divider ------------------------------------ */
.md-tabs {
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
}

/* Slightly wider content for a more spacious, modern feel -------------- */
@media screen and (min-width: 76.25em) {
  .md-grid {
    max-width: 68rem;
  }
}

/* Interactive STL viewer ---------------------------------------------- */
.md-typeset .stl-thumb {
  cursor: pointer;
  display: inline-block;
  position: relative;
  border-radius: 0.4rem;
  transition: transform 140ms ease, box-shadow 140ms ease;
}
.md-typeset .stl-thumb:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
}
.md-typeset .stl-thumb-canvas {
  display: block;
  width: 150px;
  max-width: 100%;
  height: auto;
  aspect-ratio: 340 / 240;
  border-radius: 0.4rem;
  background: var(--md-default-fg-color--lightest);
}
/* gentle pulse until the browser has rendered the preview */
.md-typeset .stl-thumb:not(.stl-thumb--ready) .stl-thumb-canvas {
  animation: stlv-pulse 1.2s ease-in-out infinite;
}
@keyframes stlv-pulse {
  0%, 100% { opacity: 0.55; }
  50% { opacity: 1; }
}
/* "3D" badge to signal interactivity */
.md-typeset .stl-thumb::after {
  content: "◻ 3D";
  position: absolute;
  right: 0.25rem;
  bottom: 0.25rem;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #fff;
  background: var(--md-primary-fg-color);
  padding: 0.05rem 0.3rem;
  border-radius: 0.5rem;
  opacity: 0.9;
  pointer-events: none;
}

.stlv-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(2px);
  padding: 1.2rem;
}
.stlv-dialog {
  display: flex;
  flex-direction: column;
  width: min(880px, 96vw);
  max-height: 92vh;
  background: var(--md-default-bg-color);
  color: var(--md-default-fg-color);
  border-radius: 0.7rem;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.45);
  overflow: hidden;
}
.stlv-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
}
.stlv-title {
  font-weight: 700;
  font-size: 0.9rem;
}
.stlv-close {
  border: 0;
  background: transparent;
  color: inherit;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 0.2rem;
}
.stlv-close:hover {
  color: var(--md-accent-fg-color);
}
.stlv-canvas {
  position: relative;
  width: 100%;
  height: 70vh;
  min-height: 260px;
}
.stlv-canvas canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}
.stlv-spinner,
.stlv-error {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--md-default-fg-color--light);
  font-size: 0.85rem;
}
.stlv-hint {
  padding: 0.5rem 0.9rem;
  font-size: 0.72rem;
  color: var(--md-default-fg-color--light);
  border-top: 1px solid var(--md-default-fg-color--lightest);
  text-align: center;
}