/* ==========================================================================
   OKF Visualizer — /okf/visual.html
   Self-contained styling. All assets served from 'self' (CSP compliant).
   Griddo palette: navy #001b3c · cream #faf9f6 · blue #5057FF · cyan #3CC3DD
   ========================================================================== */

:root {
  --navy: #001b3c;
  --navy-2: #0a2950;
  --navy-3: #04122a;
  --cream: #faf9f6;
  --blue: #5057ff;
  --cyan: #3cc3dd;
  --border: #1e3a63;
  --border-soft: #16305480;
  --text: #faf9f6;
  --text-muted: #bdc4d3;
  --text-dim: #7d8db0;

  /* Layer palette (kept in sync with visual.js LAYERS) */
  --l-ctp: #5057ff; /* content types · page */
  --l-cts: #8f94ff; /* content types · simple */
  --l-tax: #3cc3dd; /* taxonomies */
  --l-dp:  #f5a623; /* data packs */
  --l-mod: #b36bff; /* modules */
  --l-tpl: #37d9a0; /* templates */

  --radius: 12px;
  --radius-sm: 8px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font);
  color: var(--text);
  background: radial-gradient(1200px 800px at 75% -10%, #0a2c57 0%, var(--navy) 45%, var(--navy-3) 100%);
  -webkit-font-smoothing: antialiased;
  display: grid;
  grid-template-rows: auto 1fr;
  grid-template-columns: 300px 1fr 380px;
  grid-template-areas:
    "header header header"
    "side   graph  detail";
  height: 100vh;
}

/* ---------- Header ---------- */
.app-header {
  grid-area: header;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--border);
  background: rgba(4, 18, 42, 0.6);
  backdrop-filter: blur(8px);
  z-index: 10;
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; }
.brand img { height: 26px; width: auto; display: block; }
.brand .divider { width: 1px; height: 22px; background: var(--border); }
.brand h1 {
  font-size: 15px;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.01em;
}
.brand h1 .accent {
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.header-spacer { flex: 1; }
.header-stats {
  display: flex;
  gap: 18px;
  font-size: 12px;
  color: var(--text-muted);
}
.header-stats b { color: var(--text); font-variant-numeric: tabular-nums; }
.root-field {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-dim);
}
.root-field input {
  background: var(--navy-3);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-family: var(--mono);
  font-size: 12px;
  width: 150px;
}
.root-field button, .btn {
  background: var(--blue);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 7px 14px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: filter .15s ease;
}
.root-field button:hover, .btn:hover { filter: brightness(1.12); }

/* ---------- Sidebar ---------- */
.sidebar {
  grid-area: side;
  border-right: 1px solid var(--border);
  padding: 18px 16px;
  overflow-y: auto;
  background: rgba(4, 18, 42, 0.35);
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.panel-block h2 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin: 0 0 10px;
  font-weight: 700;
}
.search-box {
  position: relative;
}
.search-box input {
  width: 100%;
  background: var(--navy-3);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  font-size: 13px;
}
.search-box input::placeholder { color: var(--text-dim); }

/* Layer toggles / legend */
.layer-list { display: flex; flex-direction: column; gap: 6px; }
.layer-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 9px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  user-select: none;
  border: 1px solid transparent;
  transition: background .12s ease, border-color .12s ease;
}
.layer-item:hover { background: #ffffff0d; }
.layer-item.off { opacity: 0.4; }
.layer-swatch {
  width: 13px; height: 13px; border-radius: 4px; flex: none;
  box-shadow: 0 0 0 2px #ffffff14;
}
.layer-name { font-size: 13px; flex: 1; }
.layer-count {
  font-size: 11px;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
  background: #ffffff0f;
  padding: 1px 7px;
  border-radius: 20px;
}
.layer-actions { display: flex; gap: 8px; margin-top: 10px; }
.layer-actions button {
  flex: 1;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  padding: 6px;
  font-size: 11px;
  cursor: pointer;
}
.layer-actions button:hover { border-color: var(--cyan); color: var(--text); }

/* Controls */
.control-row { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.control-row label { font-size: 12px; color: var(--text-muted); }
.control-row select {
  background: var(--navy-3);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-size: 13px;
}
.checkbox-row {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--text-muted); cursor: pointer;
}
.checkbox-row input { accent-color: var(--blue); }

/* ---------- Graph ---------- */
.graph-wrap { grid-area: graph; position: relative; overflow: hidden; }
#cy { position: absolute; inset: 0; }
.graph-toolbar {
  position: absolute;
  top: 14px; left: 14px;
  display: flex;
  gap: 6px;
  z-index: 5;
}
.graph-toolbar button {
  width: 34px; height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(4, 18, 42, 0.8);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  display: grid;
  place-items: center;
  backdrop-filter: blur(4px);
}
.graph-toolbar button:hover { color: var(--text); border-color: var(--cyan); }

.loader {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 20;
  background: var(--navy-3);
  transition: opacity .4s ease;
}
.loader.hidden { opacity: 0; pointer-events: none; }
.loader-inner { text-align: center; color: var(--text-muted); }
.spinner {
  width: 42px; height: 42px;
  border: 3px solid #ffffff1a;
  border-top-color: var(--cyan);
  border-radius: 50%;
  margin: 0 auto 16px;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loader-status { font-size: 13px; }
.loader-sub { font-size: 12px; color: var(--text-dim); margin-top: 6px; }

.error-box {
  max-width: 460px;
  text-align: center;
  color: var(--text-muted);
  padding: 24px;
}
.error-box h3 { color: #ff8fa3; margin: 0 0 10px; }
.error-box code { font-family: var(--mono); color: var(--cyan); }

/* ---------- Detail panel ---------- */
.detail {
  grid-area: detail;
  border-left: 1px solid var(--border);
  overflow-y: auto;
  background: rgba(4, 18, 42, 0.5);
  padding: 22px 20px 60px;
}
.detail-empty {
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.6;
  margin-top: 40px;
  text-align: center;
}
.detail-empty svg { opacity: 0.4; margin-bottom: 14px; }

.d-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 12px;
}
.d-badge .dot { width: 8px; height: 8px; border-radius: 50%; }
.detail h2.d-title {
  font-size: 21px;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
  line-height: 1.2;
}
.d-type { font-size: 12px; color: var(--text-dim); margin: 0 0 16px; font-family: var(--mono); }
.d-tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 18px; }
.d-tag {
  font-size: 11px;
  background: #ffffff0f;
  color: var(--text-muted);
  padding: 3px 9px;
  border-radius: 6px;
}
.d-links { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 18px; }
.d-links a {
  font-size: 12px;
  color: var(--cyan);
  text-decoration: none;
  border: 1px solid var(--border);
  padding: 5px 11px;
  border-radius: var(--radius-sm);
}
.d-links a:hover { border-color: var(--cyan); background: #3cc3dd14; }

.d-neighbors { margin: 4px 0 20px; }
.d-neighbors h3 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin: 0 0 8px;
}
.d-neighbor {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 8px; border-radius: var(--radius-sm);
  cursor: pointer; font-size: 13px;
}
.d-neighbor:hover { background: #ffffff0d; }
.d-neighbor .dot { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.d-neighbor .dir { font-size: 10px; color: var(--text-dim); font-family: var(--mono); }

.d-divider { height: 1px; background: var(--border); margin: 4px 0 18px; }

/* Rendered markdown */
.md-body { font-size: 13.5px; line-height: 1.6; color: var(--text-muted); }
.md-body h1 { font-size: 17px; color: var(--text); margin: 20px 0 8px; }
.md-body h2 { font-size: 15px; color: var(--text); margin: 18px 0 8px; }
.md-body h3 { font-size: 13.5px; color: var(--text); margin: 16px 0 6px; }
.md-body p { margin: 8px 0; }
.md-body a { color: var(--cyan); text-decoration: none; }
.md-body a:hover { text-decoration: underline; }
.md-body ul, .md-body ol { padding-left: 20px; margin: 8px 0; }
.md-body li { margin: 3px 0; }
.md-body code {
  font-family: var(--mono);
  font-size: 12px;
  background: #ffffff0f;
  padding: 1px 5px;
  border-radius: 4px;
  color: var(--cyan);
}
.md-body pre {
  background: var(--navy-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  overflow-x: auto;
}
.md-body pre code { background: none; padding: 0; color: var(--text-muted); }
.md-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  margin: 10px 0;
  display: block;
  overflow-x: auto;
}
.md-body th, .md-body td {
  border: 1px solid var(--border);
  padding: 6px 9px;
  text-align: left;
}
.md-body th { background: #ffffff0a; color: var(--text); font-weight: 600; }
.md-body blockquote {
  border-left: 3px solid var(--cyan);
  margin: 10px 0;
  padding: 2px 14px;
  color: var(--text-dim);
}

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  body { grid-template-columns: 260px 1fr; grid-template-areas: "header header" "side graph"; }
  .detail {
    position: fixed;
    top: 56px; right: 0; bottom: 0;
    width: min(420px, 90vw);
    transform: translateX(105%);
    transition: transform .25s ease;
    z-index: 30;
    box-shadow: -20px 0 40px #00000055;
  }
  .detail.open { transform: none; }
}
@media (max-width: 720px) {
  body { grid-template-columns: 1fr; grid-template-areas: "header" "graph"; }
  .sidebar {
    position: fixed;
    top: 56px; left: 0; bottom: 0;
    width: min(300px, 88vw);
    transform: translateX(-105%);
    transition: transform .25s ease;
    z-index: 30;
  }
  .sidebar.open { transform: none; }
  .header-stats { display: none; }
  .root-field input { width: 110px; }
}
.mobile-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  cursor: pointer;
  font-size: 13px;
}
@media (max-width: 720px) { .mobile-toggle { display: inline-block; } }