.arch-wrap {
  max-width: 1560px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.arch-layout {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 1100px) {
  .arch-layout { grid-template-columns: minmax(0, 1fr) 340px; }
  .arch-side { position: sticky; top: 1rem; max-height: calc(100vh - 2rem); overflow: auto; }
}

.arch-toolbar,
.flow-bar,
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.6rem;
  align-items: center;
  margin: 0.6rem 0;
}

.arch-toolbar .grow { flex: 1; }

.arch-wrap button,
.arch-wrap input,
.arch-wrap select {
  font: inherit;
  color: var(--text);
}


#flows,
.arch-toolbar button,
.stepper button,
.chip {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 999px;
  padding: 0.25rem 0.9rem;
  cursor: pointer;
}

#play[aria-pressed="true"] {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
}

.arch-wrap button:disabled { opacity: 0.4; cursor: default; }
.arch-wrap button:focus-visible,
.arch-wrap input:focus-visible,
.arch-wrap select:focus-visible,
.node:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

#search {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 999px;
  padding: 0.25rem 0.9rem;
  min-width: 18rem;
}

.search-box { position: relative; }
#results {
  position: absolute;
  z-index: 3;
  margin: 0.25rem 0 0;
  padding: 0.25rem;
  list-style: none;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
#results:empty { display: none; }
#results button { border: 0; background: none; width: 100%; text-align: left; padding: 0.25rem 0.6rem; cursor: pointer; }
#results button:hover { background: var(--surface); }

.stepper {
  background: var(--surface);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  margin: 0.6rem 0;
}
.stepper p { margin: 0.25rem 0 0.5rem; }
#step-count { font-weight: 600; color: var(--muted); margin: 0; }

.map-scroll {
  overflow: auto;
  border-radius: var(--radius);
  background: transparent;
  box-shadow: var(--shadow);
}

svg#map { display: block; width: 100%; height: auto; min-width: 900px; font-family: inherit; }

.zone .bg { fill: color-mix(in srgb, var(--zc) 7%, var(--bg)); stroke: color-mix(in srgb, var(--zc) 35%, var(--bg)); }
.zone.outside .bg { stroke-dasharray: 6 4; }
.ztitle { font-size: 14px; font-weight: 650; fill: var(--text); }
.zblurb { font-size: 10.5px; fill: var(--muted); }

.node { cursor: pointer; transition: opacity 0.2s; }
.node .card { fill: var(--surface); stroke: var(--border); stroke-width: 1; transition: stroke 0.15s, fill 0.2s; }
.node .strip { fill: var(--zc); }
.node:hover .card { stroke: var(--accent); }
.node.sel .card, .node.now .card { stroke: var(--accent); stroke-width: 2.5; }
.node.now .card { fill: color-mix(in srgb, var(--accent) 14%, var(--surface)); }
.node.dim { opacity: 0.22; }
.ntitle { font-size: 12.5px; font-weight: 600; fill: var(--text); pointer-events: none; }
.ncode { font: 10px var(--mono); fill: var(--muted); pointer-events: none; }

.edge { fill: none; stroke: var(--muted); stroke-width: 1.2; opacity: 0.35; transition: opacity 0.2s; }
.edge.ipc { stroke-dasharray: 7 4; }
.edge.disk { stroke-dasharray: 2 4; stroke-linecap: round; }
.edge.net { stroke-dasharray: 10 3 2 3; }
.edge.on { stroke: var(--accent); stroke-width: 2.2; opacity: 1; }
.edge.done { stroke: var(--accent); opacity: 0.45; }
.edge.dim { opacity: 0.06; }
.edge.flowing { stroke-dasharray: 8 6; animation: dash 0.8s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -14; } }
.arrow { fill: var(--muted); opacity: 0.6; }
.arrow-on { fill: var(--accent); }

@media (prefers-reduced-motion: reduce) { .edge.flowing { animation: none; } }

.legend { font-size: 0.875rem; color: var(--muted); }
.legend svg { vertical-align: middle; margin-right: 0.3rem; }
.legend line { stroke: var(--muted); stroke-width: 2; }

.arch-side { background: var(--surface); box-shadow: var(--shadow); border-radius: var(--radius); padding: 1rem 1.25rem; align-self: start; }
.arch-side h2 { margin: 0 0 0.25rem; font-size: 1.2rem; }
.arch-side h3 { font-size: 0.9rem; margin: 1rem 0 0.4rem; }
.arch-side .eyebrow { margin: 0; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); }
.arch-side .code { margin: 0 0 0.5rem; font: 0.8rem var(--mono); color: var(--muted); }
.arch-side .muted { color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 0.3rem; }
.chip { font-size: 0.8rem; padding: 0.1rem 0.6rem; }
.files { padding-left: 1.1rem; font-size: 0.85rem; word-break: break-all; }

#glossary dt { font-weight: 600; margin-top: 0.6rem; }
#glossary dd { margin: 0; color: var(--muted); }

#flows { max-width: 100%; border-radius: var(--radius); }

.arch-wrap > h1 { margin-top: 2rem; }

.arch-wrap > .eyebrow { margin-top: 1.5rem; }