/* Knowledge Graph Explorer — self-contained styles. Prefix: .kgx- */
.kgx-root {
  --kgx-bg: #0f1115;
  --kgx-fg: #e7ecf3;
  --kgx-muted: #95a3b8;
  --kgx-accent: #6ea8fe;
  --kgx-accent-strong: #2f6feb;
  --kgx-render: #6ea8fe;
  --kgx-raw: #f4a261;
  --kgx-stub: #c97bff;
  --kgx-orphan: #94a3b8;
  --kgx-stroke: #475569;
  --kgx-card: #161a21;
  --kgx-border: #232a36;
  --kgx-focus: #ffd166;

  background: var(--kgx-bg);
  color: var(--kgx-fg);
  min-height: 100vh;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
}
.kgx-root *, .kgx-root *::before, .kgx-root *::after { box-sizing: border-box; }
/* Force the [hidden] attribute rule above class rules so JS-managed
 visibility actually hides those containers. Browser default [hidden]
 is selector (0,1,0); with classes also (0,1,0), source order decides
 and class rules come after the UA rule, so we override. */
[hidden] { display: none !important; }

.kgx-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--kgx-border);
  background: linear-gradient(180deg, #11151c, var(--kgx-bg));
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}
.kgx-header-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}
.kgx-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  flex: 1 1 auto;
  min-width: 0;
}
.kgx-title .accent { color: var(--kgx-accent); }

.kgx-search {
  flex: 1 1 240px;
  min-width: 0;
  position: relative;
}
.kgx-search input[type="search"] {
  width: 100%;
  background: var(--kgx-card);
  color: var(--kgx-fg);
  border: 1px solid var(--kgx-border);
  border-radius: 0.5rem;
  padding: 0.5rem 0.75rem;
  font: inherit;
}
.kgx-search input[type="search"]:focus-visible,
.kgx-toggle:focus-visible,
.kgx-btn:focus-visible {
  outline: 2px solid var(--kgx-focus);
  outline-offset: 2px;
  border-color: var(--kgx-focus);
}
.kgx-suggestions {
  position: absolute;
  z-index: 30;
  inset-inline: 0;
  top: 100%;
  margin-top: 4px;
  max-height: 18rem;
  overflow: auto;
  background: var(--kgx-card);
  border: 1px solid var(--kgx-border);
  border-radius: 0.5rem;
  box-shadow: 0 12px 28px rgba(0,0,0,0.45);
  display: none;
}
.kgx-suggestions.open { display: block; }
.kgx-suggestion {
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  color: var(--kgx-fg);
  font: inherit;
}
.kgx-suggestion:hover,
.kgx-suggestion.active { background: var(--kgx-accent-strong); color: white; }
.kgx-suggestion .meta { color: var(--kgx-muted); font-size: 0.78rem; }

.kgx-toggles {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.kgx-toggle {
  background: var(--kgx-card);
  color: var(--kgx-fg);
  border: 1px solid var(--kgx-border);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.kgx-toggle[aria-pressed="true"] {
  background: var(--kgx-accent-strong);
  border-color: var(--kgx-accent-strong);
  color: white;
}
.kgx-toggle .dot {
  display: inline-block;
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 999px;
  background: currentColor;
}

.kgx-main {
  display: grid;
  grid-template-columns: 1fr;
  min-height: 0;
}
.kgx-main.with-detail { grid-template-columns: minmax(0, 1fr) min(360px, 32vw); }

.kgx-canvas-wrap {
  position: relative;
  min-height: 60vh;
  background:
    radial-gradient(circle at 30% 25%, rgba(46, 85, 200, 0.08), transparent 55%),
    radial-gradient(circle at 75% 75%, rgba(244, 162, 97, 0.05), transparent 55%),
    var(--kgx-bg);
}
.kgx-svg {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}
.kgx-svg.panning { cursor: grabbing; }
.kgx-svg .kgx-edge { stroke: var(--kgx-stroke); stroke-width: 1px; opacity: 0.7; }
.kgx-svg .kgx-edge.to-raw { stroke: var(--kgx-raw); }
.kgx-svg .kgx-edge.to-stub { stroke: var(--kgx-stub); }
.kgx-svg .kgx-node circle {
  stroke: #0c0f15;
  stroke-width: 1.5px;
  cursor: pointer;
  transition: r 120ms ease, fill-opacity 120ms ease;
}
.kgx-svg .kgx-node.render circle { fill: var(--kgx-render); }
.kgx-svg .kgx-node.raw circle { fill: var(--kgx-raw); }
.kgx-svg .kgx-node.stub circle { fill: var(--kgx-stub); }
.kgx-svg .kgx-node.orphan circle { fill: var(--kgx-orphan); }
.kgx-svg .kgx-node:hover circle,
.kgx-svg .kgx-node.selected circle {
  stroke: var(--kgx-focus);
  stroke-width: 2.5px;
}
.kgx-svg .kgx-node text {
  font-size: 11px;
  fill: var(--kgx-fg);
  pointer-events: none;
  paint-order: stroke;
  stroke: var(--kgx-bg);
  stroke-width: 3px;
}
.kgx-svg .kgx-node.focusable {
  cursor: pointer;
}
.kgx-svg .kgx-dim { opacity: 0.15; }

.kgx-legend {
  position: absolute;
  left: 0.75rem;
  bottom: 0.75rem;
  background: rgba(15, 17, 21, 0.78);
  border: 1px solid var(--kgx-border);
  border-radius: 0.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.8rem;
  color: var(--kgx-muted);
  display: grid;
  gap: 0.25rem;
}
.kgx-legend .swatch {
  display: inline-block;
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 999px;
  margin-right: 0.4rem;
  vertical-align: middle;
}

.kgx-hint {
  position: absolute;
  right: 0.75rem;
  top: 0.75rem;
  background: rgba(15, 17, 21, 0.78);
  border: 1px solid var(--kgx-border);
  border-radius: 0.5rem;
  padding: 0.4rem 0.65rem;
  font-size: 0.78rem;
  color: var(--kgx-muted);
  max-width: 22rem;
}

.kgx-detail {
  border-left: 1px solid var(--kgx-border);
  background: var(--kgx-card);
  padding: 1rem 1.1rem;
  overflow: auto;
  min-height: 0;
}
.kgx-detail[hidden] { display: none; }
.kgx-detail h2 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  line-height: 1.3;
  color: var(--kgx-fg);
}
.kgx-detail .kgx-id {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, "Liberation Mono", monospace;
  font-size: 0.78rem;
  color: var(--kgx-muted);
  word-break: break-all;
}
.kgx-detail dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.35rem 0.85rem;
  margin: 0.75rem 0 0;
}
.kgx-detail dt {
  color: var(--kgx-muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  align-self: center;
}
.kgx-detail dd {
  margin: 0;
  font-size: 0.9rem;
  word-break: break-word;
}
.kgx-detail a {
  color: var(--kgx-accent);
  text-decoration: none;
}
.kgx-detail a:hover { text-decoration: underline; }

.kgx-links {
  margin: 1rem 0 0;
}
.kgx-links h3 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--kgx-muted);
  margin: 0.75rem 0 0.25rem;
}
.kgx-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.25rem;
}
.kgx-links li {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0.35rem;
  border-radius: 0.35rem;
}
.kgx-links li:hover { background: rgba(110, 168, 254, 0.08); }
.kgx-links li .badge {
  font-size: 0.7rem;
  color: var(--kgx-muted);
  padding: 0.05rem 0.4rem;
  border: 1px solid var(--kgx-border);
  border-radius: 999px;
}
.kgx-links a {
  color: inherit;
  text-decoration: none;
  flex: 1 1 auto;
  min-width: 0;
}
.kgx-links a:hover { color: var(--kgx-accent); }

.kgx-empty,
.kgx-loading,
.kgx-error,
.kgx-no-results:not([hidden]) {
  display: grid;
}
  place-items: center;
  padding: 3rem 1rem;
  color: var(--kgx-muted);
  text-align: center;
  min-height: 40vh;
}
.kgx-error { color: #ff8b8b; }
.kgx-spinner {
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 999px;
  border: 2px solid var(--kgx-border);
  border-top-color: var(--kgx-accent);
  animation: kgx-spin 0.9s linear infinite;
  display: inline-block;
  margin-right: 0.5rem;
  vertical-align: middle;
}
@keyframes kgx-spin { to { transform: rotate(360deg); } }

.kgx-footer {
  border-top: 1px solid var(--kgx-border);
  background: var(--kgx-card);
  color: var(--kgx-muted);
  padding: 0.6rem 1.25rem;
  font-size: 0.78rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  justify-content: space-between;
}
.kgx-footer a {
  color: var(--kgx-muted);
  text-decoration: none;
}
.kgx-footer a:hover { color: var(--kgx-accent); text-decoration: underline; }

.kgx-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.kgx-tags .tag {
  background: rgba(110, 168, 254, 0.12);
  border: 1px solid rgba(110, 168, 254, 0.35);
  color: var(--kgx-fg);
  border-radius: 999px;
  padding: 0.1rem 0.6rem;
  font-size: 0.75rem;
}

@media (max-width: 760px) {
  .kgx-main.with-detail { grid-template-columns: 1fr; }
  .kgx-detail { border-left: none; border-top: 1px solid var(--kgx-border); }
}

@media (prefers-reduced-motion: reduce) {
  .kgx-svg .kgx-node circle { transition: none; }
  .kgx-spinner { animation: none; }
}

.kgx-svg .kgx-node.dim { opacity: 0.35; }
.kgx-svg .kgx-edge.dim { opacity: 0.15; }

/* Visually hidden, still announced by screen readers. */
.kgx-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* The skip link is hidden until it takes focus, then becomes visible so a
   sighted keyboard user can see what they are about to activate. */
.kgx-skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 10;
  background: var(--kgx-card);
  color: var(--kgx-fg);
  border: 1px solid var(--kgx-accent);
  border-radius: 0 0 0.5rem 0;
  padding: 0.5rem 0.9rem;
  text-decoration: none;
}
.kgx-skip-link:focus {
  left: 0;
  outline: 2px solid var(--kgx-focus);
  outline-offset: 2px;
}

.kgx-detail-close {
  float: right;
  background: transparent;
  border: 1px solid var(--kgx-border);
  color: var(--kgx-muted);
  border-radius: 0.35rem;
  padding: 0.2rem 0.5rem;
  cursor: pointer;
}
.kgx-detail-close:hover { color: var(--kgx-fg); border-color: var(--kgx-accent); }
.kgx-detail-close:focus-visible { outline: 2px solid var(--kgx-focus); outline-offset: 2px; }