/* ============================================
   AI Knowledge Graph - Global Styles
   Dark theme, inspired by funeralai.cc
   ============================================ */

:root {
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #21262d;
  --border: #30363d;
  --text: #e6edf3;
  --text2: #8b949e;
  --text3: #484f58;
  --accent: #58a6ff;
  --accent2: #388bfd;

  /* Node type colors */
  --color-company: #f78166;
  --color-product: #79c0ff;
  --color-person: #d2a8ff;
  --color-tech: #56d364;
  --color-paper: #e3b341;

  --radius: 8px;
  --radius-lg: 12px;
  --transition: 0.2s ease;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- Nav ---- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 56px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 32px;
  z-index: 100;
}

.nav-brand {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-brand span { color: var(--accent); }

.nav-links { display: flex; gap: 4px; }

.nav-links a {
  padding: 6px 12px;
  border-radius: var(--radius);
  color: var(--text2);
  transition: var(--transition);
  font-size: 13px;
}

.nav-links a:hover, .nav-links a.active {
  background: var(--bg3);
  color: var(--text);
  text-decoration: none;
}

.nav-meta {
  margin-left: auto;
  color: var(--text3);
  font-size: 12px;
}

/* ---- Page layout ---- */
.page { padding-top: 56px; height: 100vh; }

/* ---- Type badge ---- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 500;
  border: 1px solid transparent;
}

.badge-company  { color: var(--color-company);  border-color: var(--color-company);  background: rgba(247,129,102,.1); }
.badge-product  { color: var(--color-product);  border-color: var(--color-product);  background: rgba(121,192,255,.1); }
.badge-person   { color: var(--color-person);   border-color: var(--color-person);   background: rgba(210,168,255,.1); }
.badge-tech     { color: var(--color-tech);     border-color: var(--color-tech);     background: rgba(86,211,100,.1);  }
.badge-paper    { color: var(--color-paper);    border-color: var(--color-paper);    background: rgba(227,179,65,.1);  }

/* ---- Filter chips ---- */
.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.chip {
  padding: 5px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text2);
  cursor: pointer;
  font-size: 12px;
  transition: var(--transition);
}

.chip:hover { border-color: var(--accent); color: var(--text); }
.chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.chip.chip-company.active  { background: var(--color-company);  border-color: var(--color-company); }
.chip.chip-product.active  { background: var(--color-product);  border-color: var(--color-product); color: #0d1117; }
.chip.chip-person.active   { background: var(--color-person);   border-color: var(--color-person);  color: #0d1117; }
.chip.chip-tech.active     { background: var(--color-tech);     border-color: var(--color-tech);    color: #0d1117; }
.chip.chip-paper.active    { background: var(--color-paper);    border-color: var(--color-paper);   color: #0d1117; }

/* ---- Search ---- */
.search-box {
  position: relative;
}

.search-box input {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 12px 8px 36px;
  border-radius: var(--radius);
  font-size: 13px;
  width: 220px;
  transition: var(--transition);
}

.search-box input:focus {
  outline: none;
  border-color: var(--accent);
  width: 280px;
}

.search-box .search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text3);
  font-size: 14px;
  pointer-events: none;
}

/* ---- Panel ---- */
.panel {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.panel-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.panel-header h3 { font-size: 14px; font-weight: 600; }

.panel-body { padding: 16px 20px; }

/* ---- Stats bar ---- */
.stats-bar {
  display: flex;
  gap: 24px;
}

.stat { text-align: center; }
.stat-value { font-size: 22px; font-weight: 700; color: var(--accent); }
.stat-label { font-size: 11px; color: var(--text2); margin-top: 2px; }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text3); }

/* ---- Loading ---- */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 16px;
  color: var(--text2);
}

.spinner {
  width: 32px; height: 32px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Tooltip ---- */
.tooltip {
  position: fixed;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 12px;
  font-size: 12px;
  color: var(--text);
  pointer-events: none;
  z-index: 200;
  max-width: 200px;
  box-shadow: 0 4px 12px rgba(0,0,0,.4);
}

/* ---- Empty state ---- */
.empty {
  text-align: center;
  padding: 48px 24px;
  color: var(--text2);
}

.empty-icon { font-size: 40px; margin-bottom: 12px; opacity: .5; }


/* ============================================
   v2 Additions
   ============================================ */

/* ---- Ranking page: new styles ---- */
.rank-meta-row {
  display: flex;
  gap: 6px;
  margin-top: 4px;
  flex-wrap: wrap;
}

.rank-meta-pill {
  font-size: 10px;
  color: var(--text3);
  background: var(--bg3);
  padding: 1px 6px;
  border-radius: 10px;
  border: 1px solid var(--border);
}

/* ---- Browse page: doc cards ---- */
.doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
  padding: 16px 0;
}

.doc-card {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  cursor: pointer;
  transition: border-color 0.18s, background 0.18s;
}

.doc-card:hover {
  border-color: var(--accent);
  background: #1c2330;
}

.doc-card-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 8px;
}

.doc-card-meta {
  display: flex;
  gap: 12px;
  margin-bottom: 6px;
}

.doc-meta-stat {
  font-size: 11px;
  color: var(--text3);
}

.doc-type-chips {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.doc-type-chip {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 10px;
  border: 1px solid;
}

/* ---- Browse page: header ---- */
.browse-header {
  margin-bottom: 12px;
}

.browse-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
}

.browse-desc {
  font-size: 13px;
  color: var(--text2);
}

/* ---- Browse page: mini stats ---- */
.mini-stats {
  display: flex;
  gap: 16px;
  margin: 12px 0;
  padding: 12px 16px;
  background: var(--bg3);
  border-radius: var(--radius);
  flex-wrap: wrap;
}

.mini-stat { text-align: center; min-width: 52px; }
.mini-stat-val { font-size: 20px; font-weight: 700; }
.mini-stat-lab { font-size: 11px; color: var(--text2); margin-top: 2px; }

/* ---- Doc drawer ---- */
#doc-drawer {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 300;
}

.drawer-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.5);
}

.drawer-panel {
  position: absolute;
  right: 0; top: 0; bottom: 0;
  width: 400px;
  background: var(--bg2);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.28s cubic-bezier(.4,0,.2,1);
  overflow: hidden;
}

.drawer-panel.open {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 20px 20px 14px;
  border-bottom: 1px solid var(--border);
  gap: 12px;
}

.drawer-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
}

.drawer-close {
  background: none;
  border: none;
  color: var(--text3);
  cursor: pointer;
  font-size: 16px;
  padding: 2px 6px;
  border-radius: 4px;
  flex-shrink: 0;
}
.drawer-close:hover { background: var(--bg3); color: var(--text); }

.drawer-stats {
  display: flex;
  gap: 16px;
  padding: 10px 20px;
  background: var(--bg3);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  color: var(--text2);
}

.drawer-subtitle {
  padding: 12px 20px 6px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.drawer-entities {
  flex: 1;
  overflow-y: auto;
  padding: 0 20px 12px;
}

.detail-entity {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.15s;
  border-radius: 4px;
}
.detail-entity:last-child { border-bottom: none; }
.detail-entity:hover { background: var(--bg3); padding-left: 6px; }

.detail-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.detail-name {
  flex: 1;
  font-size: 13px;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.detail-type {
  font-size: 10px;
  flex-shrink: 0;
}

.detail-count {
  font-size: 10px;
  color: var(--text3);
  flex-shrink: 0;
}

.drawer-more {
  text-align: center;
  font-size: 11px;
  color: var(--text3);
  padding: 8px;
}

.drawer-graph-btn {
  display: block;
  margin: 0 20px 20px;
  padding: 10px;
  text-align: center;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--accent);
  font-size: 13px;
  transition: var(--transition);
}
.drawer-graph-btn:hover {
  background: var(--accent);
  color: #fff;
  text-decoration: none;
}

/* ---- Doc card summary & new fields ---- */
.doc-card-summary {
  font-size: 12px;
  color: var(--text2);
  line-height: 1.5;
  margin: 6px 0 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.doc-date {
  font-size: 11px;
  color: var(--text3);
}

.doc-km-link {
  font-size: 11px;
  color: var(--accent);
  text-decoration: none;
  margin-left: auto;
}
.doc-km-link:hover { text-decoration: underline; }

/* ---- Drawer improvements ---- */
.drawer-summary {
  font-size: 13px;
  color: var(--text2);
  line-height: 1.6;
  padding: 0 20px 12px;
  border-bottom: 1px solid var(--border);
}

.drawer-actions {
  display: flex;
  gap: 10px;
  padding: 10px 20px 20px;
}

.drawer-km-btn {
  flex: 1;
  display: block;
  padding: 10px;
  text-align: center;
  background: var(--bg3);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: var(--accent);
  font-size: 13px;
  transition: var(--transition);
  text-decoration: none;
}
.drawer-km-btn:hover {
  background: var(--accent);
  color: #fff;
}

.drawer-graph-btn {
  flex: 1;
}