/* ============================================================================
   Graph-themed look for the esnfed docs: a network loading screen, a subtle
   "node grid" background, and small graph-node accents on headings.
   ========================================================================== */

/* ---- network loading screen --------------------------------------------- */
#graph-loader {
  position: fixed;
  inset: 0;
  z-index: 100000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: radial-gradient(circle at 50% 42%, #1b2036 0%, #0d0f1c 70%);
  transition: opacity 0.42s ease;
}
#graph-loader.gl-done { opacity: 0; pointer-events: none; }
#graph-loader #gl-canvas { max-width: 90vw; }
#graph-loader .gl-label {
  font: 600 22px/1 system-ui, -apple-system, "Segoe UI", sans-serif;
  letter-spacing: 0.2em;
  color: #cfc8ff;
  opacity: 0.92;
}
#graph-loader .gl-label::after {
  content: "";
  display: block;
  width: 120px;
  height: 2px;
  margin: 12px auto 0;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, #7c6cff, transparent);
  animation: gl-scan 1.1s ease-in-out infinite;
}
@keyframes gl-scan { 0%,100% { opacity: 0.3; } 50% { opacity: 1; } }
/* never linger / never show with reduced motion */
html:not(.gl-loading) #graph-loader { display: none; }
@media (prefers-reduced-motion: reduce) { #graph-loader { display: none !important; } }

/* ---- "node grid" page background ---------------------------------------- */
.md-main {
  background-image: radial-gradient(rgba(124, 108, 255, 0.10) 1px, transparent 1.4px);
  background-size: 24px 24px;
}
[data-md-color-scheme="slate"] .md-main {
  background-image: radial-gradient(rgba(138, 124, 255, 0.16) 1px, transparent 1.4px);
}

/* ---- graph-node accent on section headings ------------------------------ */
.md-typeset h2 { display: flex; align-items: center; }
.md-typeset h2::before {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-right: 0.55rem;
  border-radius: 50%;
  background: var(--md-accent-fg-color);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--md-accent-fg-color) 22%, transparent);
}

/* ---- a touch of "edge" gradient under the page title -------------------- */
.md-typeset h1 {
  border-bottom: 2px solid transparent;
  border-image: linear-gradient(90deg, var(--md-accent-fg-color), transparent) 1;
  padding-bottom: 0.2em;
}

/* slightly bolder, graph-ish tabs */
.md-tabs { font-weight: 600; }