/* -----------------------------------------------------------------------------
 * File: css/chapters/05.css
 * Purpose: Chapter 05 — Systems & Integrations interactive index. 12-card grid
 *          + per-card <details> expansion revealing a flow diagram + workflow.
 *          Consumes tokens.css exclusively — no hardcoded hex/px values.
 * -------------------------------------------------------------------------- */

/* ================================ Legend ================================== */
.systems-legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-6);
  margin-bottom: var(--sp-8);
  padding: var(--sp-4) var(--sp-6);
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
}

.systems-legend-group {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
}

.systems-legend-label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
}

.systems-legend-swatches {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-2);
}

.legend-node {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-xs);
  color: var(--c-text-secondary);
}

.legend-node .swatch {
  display: inline-block;
  width: 16px;
  height: 16px;
  border-radius: var(--r-sm);
  flex-shrink: 0;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.25);
}

.legend-node .swatch.is-source { background: var(--c-text-muted); border: 1.5px solid var(--c-text-muted); }
.legend-node .swatch.is-transform { background: var(--c-accent-soft); border: 1.5px solid var(--c-accent); }
.legend-node .swatch.is-destination { background: var(--c-bg-tertiary); border: 2px solid var(--c-accent); }

/* ================================= Grid ==================================== */
.systems-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-6);
}

@media (max-width: 1000px) {
  .systems-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .systems-grid { grid-template-columns: 1fr; }
}

/* Each card is a <details> — collapsed by default, spans full grid row when open */
.integration-card {
  grid-column: span 1;
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: border-color var(--dur-base) var(--ease-standard),
              box-shadow var(--dur-base) var(--ease-standard);
}

.integration-card:hover { border-color: var(--c-accent); }

.integration-card[open] {
  grid-column: 1 / -1;
  border-color: var(--c-accent);
  box-shadow: var(--shadow-glow);
}

/* Remove default marker/triangle, build our own affordance */
.integration-card > summary {
  list-style: none;
  cursor: pointer;
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.integration-card > summary::-webkit-details-marker,
.integration-card > summary::marker {
  display: none;
  content: '';
}

.integration-card > summary:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: -2px;
  border-radius: var(--r-md);
}

.integration-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-3);
}

.integration-glyph {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  color: var(--c-accent);
}

.integration-glyph svg { width: 100%; height: 100%; }

.integration-toggle-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--c-text-muted);
  transition: transform var(--dur-base) var(--ease-standard);
  margin-top: var(--sp-1);
}

.integration-card[open] .integration-toggle-icon { transform: rotate(180deg); color: var(--c-accent); }

.integration-name {
  font-family: var(--font-head);
  font-size: var(--fs-md);
  font-weight: 700;
  color: var(--c-text-primary);
  margin-top: var(--sp-3);
}

.integration-direction {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--c-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.integration-direction .dir-icon { width: 14px; height: 14px; flex-shrink: 0; }

.integration-transport {
  font-size: var(--fs-xs);
  color: var(--c-text-secondary);
  line-height: 1.4;
}

.integration-card-foot {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-1);
}

.integration-card-foot .pill {
  white-space: normal;
  text-align: left;
}

/* ============================== Detail panel =============================== */
.integration-detail {
  padding: 0 var(--sp-6) var(--sp-8);
  border-top: 1px solid var(--c-border-soft);
  padding-top: var(--sp-6);
}

.integration-detail-summary {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-6);
  margin-bottom: var(--sp-6);
  font-size: var(--fs-sm);
  color: var(--c-text-secondary);
}

.integration-detail-summary dt {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--c-text-muted);
  margin-bottom: var(--sp-1);
}

.integration-detail-summary dd { color: var(--c-text-primary); }

.integration-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
  gap: var(--sp-3) var(--sp-6);
}

.integration-entities {
  margin-top: var(--sp-6);
  padding-left: var(--sp-6);
  color: var(--c-text-secondary);
  font-size: var(--fs-sm);
}

.integration-entities li { margin-bottom: var(--sp-2); line-height: 1.5; }
.integration-entities li::marker { color: var(--c-accent); }
.integration-entities strong { color: var(--c-text-primary); }

.integration-issue {
  margin-top: var(--sp-6);
}

.integration-crosslink {
  margin-top: var(--sp-4);
  font-size: var(--fs-sm);
}

/* ============================ Flow diagram sizing =========================== */
.integration-detail .diagram-panel {
  margin-top: var(--sp-2);
  margin-bottom: var(--sp-6);
}

.integration-detail .diagram-panel svg {
  width: 100%;
  height: auto;
}

.flow-node-label {
  fill: var(--c-text-primary);
  font-family: var(--font-body);
  font-size: 12.5px;
  font-weight: 600;
}

.flow-node-sublabel {
  fill: var(--c-text-muted);
  font-family: var(--font-mono);
  font-size: 10px;
}

/* ================================ Print =================================== */
@media print {
  .systems-grid { display: block; }

  .integration-card {
    display: block;
    break-inside: avoid;
    page-break-inside: avoid;
    margin-bottom: var(--sp-6);
    box-shadow: none;
  }

  .integration-card > summary {
    cursor: default;
  }

  .integration-toggle-icon { display: none; }

  /* Chromium's UA stylesheet hides a closed <details>'s non-summary content
     via `details:not([open]) > *:not(summary) { display: none }`, which the
     shared print.css's `details:not([open]) { display: block !important }`
     rule (targeting the <details> element itself) does not override — that
     rule only ensures the <details> box itself isn't display:none, not its
     children. Match the UA selector shape directly, with our own !important,
     so every collapsed card's content forces open for print regardless of
     on-screen JS/open state. */
  .integration-card:not([open]) > *:not(summary) {
    display: block !important;
  }

  .integration-detail {
    display: block !important;
  }

  .integration-detail .diagram-panel {
    break-inside: avoid;
    page-break-inside: avoid;
  }
}