:root {
  --primary: #B91C1C;
  --bright: #DC2626;
  --dark: #7F1D1D;
  --tint: #FEE2E2;
  --soft: #FEF2F2;
  --ink: #111827;
  --muted: #6B7280;
  --border: #E5E7EB;
  --bg: #F9FAFB;
  --surface: #FFFFFF;
  --code-bg: #F3F4F6;
  --shadow: 0 2px 10px rgba(17, 24, 39, 0.06);
  --font: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

[data-theme="dark"] {
  --primary: #EF4444;
  --bright: #F87171;
  --dark: #FCA5A5;
  --tint: #450A0A;
  --soft: #2A0F12;
  --ink: #F9FAFB;
  --muted: #9CA3AF;
  --border: #374151;
  --bg: #0F172A;
  --surface: #1E293B;
  --code-bg: #111827;
  --shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}

.skip-link {
  position: absolute;
  left: -9999px;
}
.skip-link:focus {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 999;
  padding: 8px 14px;
  background: var(--primary);
  color: #FFFFFF;
  border-radius: 6px;
}

.top-stripe {
  height: 5px;
  background: linear-gradient(90deg, #7F1D1D, #B91C1C, #DC2626);
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.tagline {
  margin: 0;
  font-size: 0.78rem;
  color: var(--muted);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1 1 360px;
  max-width: 620px;
  justify-content: flex-end;
}

.global-search-wrap {
  flex: 1 1 280px;
}
#global-search {
  width: 100%;
  padding: 8px 12px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 0.92rem;
}
#global-search:focus {
  outline: none;
  border-color: var(--primary);
}

.nav-tabs {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
}

.tab-btn {
  border: none;
  background: transparent;
  color: var(--muted);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 10px 14px;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}
.tab-btn:hover { color: var(--ink); }
.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.workspace {
  max-width: 1440px;
  margin: 0 auto;
  padding: 20px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.main-pane {
  flex: 1 1 auto;
  min-width: 0;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.btn {
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.btn-sm { padding: 6px 11px; font-size: 0.8rem; }
.btn-primary {
  background: #B91C1C;
  color: #FFFFFF;
}
.btn-primary:hover { background: #991B1B; }
.btn-outline {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--border);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-link {
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
}

.pill {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 700;
}
.pill-red { background: var(--tint); color: var(--dark); }
.pill-soft { background: var(--soft); color: var(--primary); border: 1px solid var(--tint); }
.pill-neutral { background: var(--code-bg); color: var(--muted); }

.hero-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 6px solid #B91C1C;
  border-radius: 12px;
  padding: 22px 24px;
  box-shadow: var(--shadow);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  margin-bottom: 18px;
}
.hero-card h2 { margin: 8px 0 6px; font-size: 1.45rem; }
.hero-card p { margin: 0; color: var(--muted); max-width: 72ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 8px; }

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(175px, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}
.kpi-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.12s ease;
}
.kpi-card:hover { border-color: var(--primary); transform: translateY(-1px); }
.kpi-num { font-size: 1.65rem; font-weight: 800; color: var(--primary); line-height: 1.1; }
.kpi-label { font-size: 0.82rem; font-weight: 700; margin-top: 4px; }
.kpi-sub { font-size: 0.74rem; color: var(--muted); }

.section-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 16px;
}
.panel-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
  box-shadow: var(--shadow);
}
.panel-card h3 { margin: 0 0 14px; font-size: 1.05rem; }

.bar-row { margin-bottom: 10px; }
.bar-row-head { display: flex; justify-content: space-between; font-size: 0.82rem; margin-bottom: 4px; }
.bar-track { height: 9px; border-radius: 999px; background: var(--soft); overflow: hidden; }
.bar-fill { height: 100%; background: #B91C1C; border-radius: 999px; }

.quick-links { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.quick-chip {
  background: var(--soft);
  color: var(--dark);
  border: 1px solid var(--tint);
  border-radius: 8px;
  padding: 6px 10px;
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
}
.quick-chip:hover { background: var(--tint); border-color: var(--primary); }

.callout-soft {
  background: var(--soft);
  border-left: 3px solid var(--primary);
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 0.84rem;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 16px;
}
.filter-bar select, .filter-bar input {
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 0.85rem;
}
.ctrl-group {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
}
.count-label { margin-left: auto; font-size: 0.82rem; font-weight: 600; color: var(--muted); }

.alias-banner {
  background: var(--soft);
  border: 1px solid var(--tint);
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 14px;
  font-size: 0.86rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 12px;
}
.entity-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color 0.14s ease, box-shadow 0.14s ease;
}
.entity-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.entity-card.selected {
  border-color: var(--primary);
  border-width: 2px;
}
.card-top { display: flex; justify-content: space-between; align-items: center; gap: 6px; }
.card-title { font-weight: 700; font-size: 0.96rem; margin: 2px 0; }
.card-summary { font-size: 0.82rem; color: var(--muted); margin: 0; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; padding-top: 6px; }

.graph-stage-wrap {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  height: 620px;
}
#graph-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}
#graph-canvas:active { cursor: grabbing; }
.graph-legend {
  position: absolute;
  left: 12px;
  bottom: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.76rem;
  opacity: 0.95;
}
.legend-item { display: flex; align-items: center; gap: 5px; }
.legend-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.graph-tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--ink);
  color: var(--surface);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 0.78rem;
  max-width: 280px;
  z-index: 15;
}

.learning-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}
.track-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.track-pill {
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
}
.track-pill.active {
  background: #B91C1C;
  border-color: #7F1D1D;
  color: #FFFFFF;
}
.progress-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  min-width: 270px;
}
.progress-meta { display: flex; justify-content: space-between; align-items: center; font-size: 0.82rem; font-weight: 700; margin-bottom: 6px; gap: 12px; }
.progress-bar-bg { height: 8px; background: var(--soft); border-radius: 999px; overflow: hidden; }
.progress-bar-fill { height: 100%; background: #B91C1C; width: 0%; transition: width 0.2s ease; }

.steps-list { display: flex; flex-direction: column; gap: 12px; }
.step-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.step-card.completed { border-left: 4px solid #B91C1C; background: var(--soft); }
.step-check { width: 19px; height: 19px; margin-top: 4px; accent-color: #B91C1C; cursor: pointer; }
.step-body { flex: 1 1 auto; }
.step-title { font-weight: 700; font-size: 1rem; margin: 2px 0 4px; }
.step-desc { margin: 0 0 8px; font-size: 0.86rem; color: var(--muted); }
.step-chips { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }

.table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow-x: auto;
}
.data-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.data-table th {
  text-align: left;
  padding: 11px 12px;
  background: var(--soft);
  border-bottom: 1.5px solid var(--tint);
  font-weight: 700;
}
.data-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
.data-table a { color: var(--primary); text-decoration: none; font-weight: 600; }
.data-table a:hover { text-decoration: underline; }

.detail-drawer {
  width: 390px;
  flex: 0 0 390px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 5px solid #B91C1C;
  border-radius: 12px;
  padding: 18px;
  box-shadow: var(--shadow);
  position: sticky;
  top: 112px;
  max-height: calc(100vh - 130px);
  overflow-y: auto;
}
.drawer-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.btn-close {
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}
.detail-drawer h2 { margin: 4px 0 8px; font-size: 1.15rem; }
.drawer-badges { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.drawer-actions { margin-bottom: 14px; }
.drawer-field { margin-bottom: 12px; }
.drawer-field-label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); font-weight: 700; margin-bottom: 3px; }
.drawer-field-val { font-size: 0.86rem; word-break: break-word; }
.drawer-edges, .drawer-sources { margin-top: 14px; border-top: 1px solid var(--border); padding-top: 12px; }
.drawer-section-title { font-size: 0.84rem; font-weight: 800; margin: 0 0 8px; color: var(--dark); }
.edge-chip {
  display: block;
  width: 100%;
  text-align: left;
  background: var(--soft);
  border: 1px solid var(--tint);
  border-radius: 7px;
  padding: 6px 9px;
  margin-bottom: 6px;
  color: var(--ink);
  font-family: var(--font);
  font-size: 0.8rem;
  cursor: pointer;
}
.edge-chip:hover { border-color: var(--primary); }
.src-link { display: block; font-size: 0.8rem; color: var(--primary); text-decoration: none; margin-bottom: 6px; }
.src-link:hover { text-decoration: underline; }

.load-error {
  max-width: 720px;
  margin: 40px auto;
  padding: 20px;
  background: var(--tint);
  color: var(--dark);
  border: 1.5px solid var(--primary);
  border-radius: 10px;
  font-weight: 600;
}

@media (max-width: 980px) {
  .workspace { flex-direction: column; }
  .detail-drawer {
    width: 100%;
    flex: none;
    position: static;
    max-height: none;
  }
}