/* Micro-interactions: subtle, fast (<200ms), opacity/transform only */

/* Link hover: underline thickness + color */
.site-link {
  text-underline-offset: 0.2em;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  transition: color 180ms ease, text-decoration-color 180ms ease, text-decoration-thickness 180ms ease;
}
.site-link:hover {
  text-decoration-thickness: 2px;
  color: #0369a1;
}
.dark .site-link:hover {
  color: #38bdf8;
}

/* Cards: slight elevate, shadow, translateY(-2px) */
.card-hover {
  transition: transform 180ms ease, box-shadow 180ms ease;
}
.card-hover:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.05);
}
.dark .card-hover:hover {
  box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.2);
}

/* Section reveal: initial state hidden */
.section-reveal {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 400ms ease, transform 400ms ease;
}
.section-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .section-reveal {
    opacity: 1;
    transform: none;
  }
  .section-reveal.is-visible {
    opacity: 1;
    transform: none;
  }
}

/* Sidebar nav: appears when mouse near left edge */
.sidebar-nav {
  position: fixed;
  left: 0;
  top: 50%;
  transform: translateY(-50%) translateX(-100%);
  z-index: 40;
  transition: transform 200ms ease;
}
.sidebar-nav.is-visible {
  transform: translateY(-50%) translateX(0);
}
.sidebar-nav .sidebar-trigger-zone {
  position: fixed;
  left: 0;
  top: 0;
  width: 24px;
  height: 100%;
  z-index: 39;
}

/* Code block: copy button container */
.code-block-wrap {
  position: relative;
}
.code-block-wrap .copy-code-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  opacity: 0;
  transition: opacity 180ms ease;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  background: #334155;
  color: #f8fafc;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}
.code-block-wrap:hover .copy-code-btn,
.code-block-wrap .copy-code-btn:focus,
.copy-code-btn.copied {
  opacity: 1;
}
.code-block-wrap .copy-code-btn.copied {
  background: #0f172a;
}

@media (prefers-reduced-motion: reduce) {
  .code-block-wrap .copy-code-btn {
    opacity: 1;
  }
}