/* ==========================================================================
   @digithings/design — living-architecture/styles.css
   All classes are scoped under `.la-*`. Consumes tokens from ../tokens.css.
   ========================================================================== */

.la-host {
  display: block;
  width: 100%;
  height: 100%;
  outline: none;
}
.la-host:focus-visible {
  box-shadow: 0 0 0 2px var(--accent, var(--fg));
  border-radius: var(--radius-md);
}

.la-svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* --- Edges --------------------------------------------------------------- */
.la-edge {
  fill: none;
  stroke: var(--border-color);
  stroke-width: 1.2;
  stroke-dasharray: 4 8;
  stroke-dashoffset: 0;
  opacity: 0.7;
  animation: la-flow 6s linear infinite;
  transition:
    stroke 0.4s var(--transition-ease),
    opacity 0.4s var(--transition-ease),
    stroke-width 0.3s var(--transition-ease);
}
.la-edge.la-is-hot {
  stroke: var(--accent, var(--fg));
  stroke-width: 1.6;
  opacity: 1;
}

@keyframes la-flow {
  from { stroke-dashoffset: 0; }
  to   { stroke-dashoffset: -48; }
}

/* --- Nodes --------------------------------------------------------------- */
.la-node {
  cursor: pointer;
  transform-box: fill-box;
  transform-origin: center;
  transition:
    opacity 0.4s var(--transition-ease),
    transform 0.3s var(--transition-ease);
}
.la-node.la-is-dim { opacity: 0.28; }

.la-node .la-halo {
  fill: var(--accent, var(--fg));
  opacity: 0;
  transition: opacity 0.3s linear;
}
.la-node:hover .la-halo,
.la-node:focus-visible .la-halo,
.la-node.la-is-active .la-halo {
  opacity: 0.22;
}
.la-node.la-is-active .la-halo { opacity: 0.35; }

.la-node .la-ring {
  fill: rgba(255, 255, 255, 0.02);
  stroke: var(--border-color);
  stroke-width: 1;
  transition: stroke 0.3s, stroke-width 0.3s;
}
.la-node:hover .la-ring,
.la-node:focus-visible .la-ring,
.la-node.la-is-active .la-ring {
  stroke: var(--accent, var(--fg));
  stroke-width: 2;
}

.la-node .la-dot {
  fill: var(--accent, var(--fg));
  opacity: 0.5;
}

.la-node .la-label {
  font-family: var(--font-family-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  fill: var(--text-primary);
  text-anchor: middle;
  pointer-events: none;
  user-select: none;
}

.la-node:focus { outline: none; }
.la-node:focus-visible .la-ring { stroke-dasharray: 3 3; }

/* --- Zoom-out button ----------------------------------------------------- */
.la-zoom-out-btn {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: rgba(10, 10, 10, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.la-zoom-out-btn:hover,
.la-zoom-out-btn:focus-visible {
  color: var(--fg);
  border-color: var(--accent, var(--fg));
  background: rgba(18, 18, 18, 0.9);
  outline: none;
}

/* --- Reduced motion ------------------------------------------------------ */
.la-host.la-reduced-motion .la-edge { animation: none; }
.la-host.la-reduced-motion .la-node,
.la-host.la-reduced-motion .la-halo,
.la-host.la-reduced-motion .la-ring,
.la-host.la-reduced-motion .la-edge {
  transition: none;
}

@media (prefers-reduced-motion: reduce) {
  .la-edge { animation: none; }
  .la-node,
  .la-halo,
  .la-ring { transition: none; }
}