/* THUAS Research Portal - Unified styles */
:root {
  --thuas-dark: #2C4254;
  --thuas-green: #9EA700;
  --thuas-olive: #909805;
  --thuas-caption: #606E86;
  --thuas-light: #F5F7FA;
  --thuas-border: #E2E8F0;
  --accent: #4361EE;
  --accent-light: #EEF1FF;
}

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--thuas-light);
  color: var(--thuas-dark);
  min-height: 100vh;
}

/* ---- Top navbar ---- */
.portal-nav {
  background: var(--thuas-dark);
  color: #fff;
  display: flex;
  align-items: center;
  padding: 0 24px;
  height: 56px;
  gap: 32px;
  position: sticky;
  top: 0;
  z-index: 1000;
}
.portal-brand {
  font-size: 1.1rem;
  font-weight: 700;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}
.portal-brand .accent { color: var(--thuas-green); }

.portal-tabs {
  display: flex;
  gap: 2px;
  height: 100%;
  align-items: stretch;
}
.portal-tab {
  padding: 0 18px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 500;
  color: #94A3B8;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all 0.15s;
  white-space: nowrap;
  text-decoration: none;
}
.portal-tab:hover { color: #E2E8F0; background: rgba(255,255,255,0.05); }
.portal-tab.active { color: #fff; border-bottom-color: var(--thuas-green); }
.portal-tab i { font-size: 1rem; }

/* ---- Tab content ---- */
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* ---- Shared card styles ---- */
.card {
  background: #fff;
  border: 1px solid var(--thuas-border);
  border-radius: 10px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.card-header {
  padding: 12px 16px;
  font-weight: 600;
  font-size: 0.92rem;
  border-bottom: 1px solid var(--thuas-border);
  color: var(--thuas-dark);
}
.card-body { padding: 16px; }

/* ---- Stat cards ---- */
.stat-card {
  background: #fff;
  border-radius: 10px;
  padding: 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  display: flex;
  align-items: center;
  gap: 14px;
  border: 1px solid var(--thuas-border);
}
.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}
.stat-icon.blue { background: #DBEAFE; color: #2563EB; }
.stat-icon.green { background: #DCFCE7; color: #16A34A; }
.stat-icon.purple { background: #EDE9FE; color: #7C3AED; }
.stat-icon.amber { background: #FEF3C7; color: #D97706; }
.stat-val { font-size: 1.4rem; font-weight: 700; color: var(--thuas-dark); }
.stat-label { font-size: 0.78rem; color: var(--thuas-caption); }

/* ---- Section header ---- */
.section-header {
  padding: 20px 24px 12px;
}
.section-header h2 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--thuas-dark);
}
.section-header p {
  font-size: 0.85rem;
  color: var(--thuas-caption);
  margin-top: 2px;
}
.ef-note {
  margin-top: 8px;
  padding: 8px 14px;
  background: #F8FAF0;
  border: 1px solid #E8EBCE;
  border-radius: 8px;
  font-size: 0.82rem;
  color: #5A6340;
}
.ef-note i { color: var(--thuas-olive); margin-right: 4px; }

/* ---- Content area ---- */
.tab-content-area { padding: 0 24px 24px; }

/* ---- Expert Finder styles ---- */
.ef-search-section {
  background: #fff;
  border-bottom: 1px solid var(--thuas-border);
  padding: 16px 24px;
}
.ef-search-bar {
  display: flex;
  gap: 8px;
}
.ef-search-bar input[type="text"] {
  flex: 1;
  padding: 10px 14px;
  border: 2px solid var(--thuas-border);
  border-radius: 8px;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
}
.ef-search-bar input:focus { border-color: var(--thuas-olive); }
.ef-search-bar button {
  padding: 10px 24px;
  background: var(--thuas-dark);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  cursor: pointer;
  font-weight: 500;
}
.ef-search-bar button:hover { background: #3A556A; }
.ef-search-bar button:disabled { background: #94A3B8; cursor: not-allowed; }

.ef-filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.ef-filters select {
  padding: 6px 10px;
  border: 1px solid var(--thuas-border);
  border-radius: 6px;
  font-size: 0.85rem;
  background: #fff;
  color: var(--thuas-dark);
  max-width: 280px;
}

/* Example query buttons */
.ef-examples {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
  align-items: center;
}
.ef-examples-label {
  font-size: 0.82rem;
  color: var(--thuas-caption);
  font-weight: 500;
}
.ef-example-btn {
  padding: 4px 12px;
  border: 1px solid var(--thuas-border);
  border-radius: 16px;
  background: #fff;
  font-size: 0.8rem;
  color: var(--thuas-dark);
  cursor: pointer;
  transition: all 0.15s;
}
.ef-example-btn:hover {
  background: var(--thuas-dark);
  color: #fff;
  border-color: var(--thuas-dark);
}

.ef-results { max-width: 960px; margin: 0 auto; padding: 20px; }

/* Empty state */
.ef-empty-state { text-align: center; padding: 60px 20px; color: var(--thuas-caption); }
.ef-empty-state p { font-size: 1.05rem; margin-bottom: 4px; }
.ef-empty-hint { font-size: 0.85rem !important; }

/* Summary bar */
.ef-summary {
  background: #fff;
  border: 1px solid var(--thuas-border);
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: 16px;
}
.ef-summary-text { font-size: 0.92rem; color: var(--thuas-dark); }
.ef-summary-note {
  font-size: 0.8rem;
  color: var(--thuas-caption);
  margin-top: 4px;
}
.ef-summary-note i { margin-right: 3px; }

/* Related topics/groups */
.ef-related {
  margin-bottom: 16px;
}
.ef-related-section {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  margin-bottom: 6px;
}
.ef-related-label {
  font-size: 0.78rem;
  color: var(--thuas-caption);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.ef-related-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 14px;
  font-size: 0.78rem;
  font-weight: 500;
}
.ef-related-tag.topic { background: #FFF8EE; color: #B87800; border: 1px solid #FFE0A0; }
.ef-related-tag.group { background: #FFFBEB; color: #B45309; border: 1px solid #FDE68A; }

/* Result cards — clean, no scores */
.ef-result-card {
  background: #fff;
  border: 1px solid var(--thuas-border);
  border-radius: 10px;
  padding: 16px 18px;
  margin-bottom: 10px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  transition: box-shadow 0.2s;
}
.ef-result-card:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.ef-result-rank {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--thuas-light);
  color: var(--thuas-caption);
  font-size: 0.82rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.ef-result-body { flex: 1; min-width: 0; }
.ef-result-title { font-size: 0.95rem; font-weight: 600; line-height: 1.4; color: var(--thuas-dark); margin-bottom: 4px; }
.ef-result-authors { font-size: 0.82rem; color: #64748B; margin-bottom: 6px; line-height: 1.4; }
.ef-result-meta { display: flex; flex-wrap: wrap; gap: 12px; font-size: 0.8rem; color: #64748B; }
.ef-meta-item { display: flex; align-items: center; gap: 4px; }
.ef-meta-item i { font-size: 0.78rem; color: var(--thuas-caption); }
.ef-result-topic { margin-top: 6px; }
.ef-topic-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.72rem;
  background: var(--accent-light);
  color: var(--accent);
  border: 1px solid #D0D8FF;
}

.tag {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
  margin: 2px;
}
.tag.topic { background: #FFF8EE; color: #B87800; border: 1px solid #FFE0A0; }
.tag.keyword { background: #F0FAF0; color: #2D8A4E; border: 1px solid #C0E8C0; }
.tag.subfield { background: var(--accent-light); color: var(--accent); border: 1px solid #D0D8FF; }
.tag.research_group { background: #FFFBEB; color: #B45309; border: 1px solid #FDE68A; }

.matched-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.72rem;
  margin-top: 4px;
  margin-right: 4px;
  background: var(--accent-light);
  color: var(--accent);
  border: 1px solid #D0D8FF;
}

.level-header { font-size: 0.78rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; color: var(--thuas-caption); margin-bottom: 6px; }
.tags-row { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 10px; }

/* ---- Pagination ---- */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  padding: 16px 0;
}
.pagination button {
  padding: 6px 14px;
  border: 1px solid var(--thuas-border);
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--thuas-dark);
}
.pagination button:hover { border-color: var(--thuas-olive); color: var(--thuas-olive); }
.pagination button:disabled { opacity: 0.4; cursor: not-allowed; }
.pagination button.active { background: var(--thuas-dark); color: #fff; border-color: var(--thuas-dark); }
.pagination .page-info { font-size: 0.82rem; color: var(--thuas-caption); }

/* ---- Knowledge Graph overrides (dark canvas in light portal) ---- */
.kg-container {
  position: relative;
  height: calc(100vh - 150px);
  background: #0F1117;
  border-radius: 10px;
  overflow: hidden;
  margin: 0 24px 24px;
}
.kg-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 24px;
  background: #14161E;
  border-bottom: 1px solid #1E2130;
  min-height: 40px;
  font-size: 0.82rem;
}
.kg-controls input[type="text"] {
  padding: 5px 10px;
  border-radius: 6px;
  border: 1px solid #2A2D3A;
  background: #1A1D27;
  color: #E0E0E0;
  font-size: 0.82rem;
  width: 260px;
}
.kg-controls select {
  padding: 5px 8px;
  border-radius: 6px;
  border: 1px solid #2A2D3A;
  background: #1A1D27;
  color: #E0E0E0;
  font-size: 0.82rem;
}
.kg-controls button {
  padding: 5px 12px;
  border-radius: 6px;
  border: 1px solid #2A2D3A;
  background: #1A1D27;
  color: #8892A6;
  font-size: 0.82rem;
  cursor: pointer;
}
.kg-controls button:hover { background: #22263A; color: #B0BCD0; }
.kg-controls label { color: #6A7180; font-size: 0.78rem; }

.kg-tab {
  padding: 5px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 500;
  background: transparent;
  border: 1px solid #2A2D3A;
  color: #8892A6;
  transition: all 0.15s;
}
.kg-tab:hover { background: #22263A; color: #B0BCD0; }
.kg-tab.active { background: #1E3A5F; border-color: #3A6EA5; color: #7EB8FF; }

.kg-legend {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: #1A1D27CC;
  border: 1px solid #2A2D3A;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.75rem;
  color: #8892A6;
  z-index: 10;
}
.kg-legend-item { display: flex; align-items: center; gap: 6px; margin: 3px 0; }
.kg-legend-dot { width: 10px; height: 10px; border-radius: 50%; }

.kg-info {
  position: absolute;
  bottom: 16px;
  right: 16px;
  width: 340px;
  max-height: 45vh;
  overflow-y: auto;
  background: #1A1D27;
  border: 1px solid #2A2D3A;
  border-radius: 10px;
  padding: 14px;
  font-size: 0.82rem;
  color: #C8D0DC;
  z-index: 10;
  display: none;
  box-shadow: 0 8px 30px rgba(0,0,0,0.4);
}
.kg-info h3 { color: #7EB8FF; margin-bottom: 6px; font-size: 0.95rem; }
.kg-info .field { margin-bottom: 5px; }
.kg-info .field-label { color: #6A7180; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.5px; }
.kg-info .kw-tag { display: inline-block; padding: 2px 6px; margin: 1px; background: #1E3A5F; border-radius: 4px; font-size: 0.72rem; color: #7EB8FF; }
.kg-info .close-btn { position: absolute; top: 6px; right: 10px; cursor: pointer; color: #6A7180; font-size: 1.1rem; }
.kg-info .close-btn:hover { color: #E0E0E0; }

.kg-stats {
  position: absolute;
  top: 8px;
  left: 16px;
  background: #1A1D27CC;
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.72rem;
  color: #6A7180;
  z-index: 10;
}

.hidden { display: none !important; }

/* ---- Explorer sub-nav ---- */
.explorer-subnav {
  display: flex;
  gap: 4px;
  padding: 10px 24px;
  border-bottom: 1px solid var(--thuas-border);
  background: #fff;
}
.explorer-subnav a {
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--thuas-caption);
  text-decoration: none;
  cursor: pointer;
  transition: 0.15s;
}
.explorer-subnav a:hover { background: var(--thuas-light); color: var(--thuas-dark); }
.explorer-subnav a.active { background: var(--thuas-dark); color: #fff; }

/* ---- Explorer tables ---- */
.explorer-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.explorer-table th {
  text-align: left;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--thuas-caption);
  border-bottom: 2px solid var(--thuas-border);
  padding: 8px 12px;
}
.explorer-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--thuas-border);
  vertical-align: top;
}
.explorer-table tbody tr { cursor: pointer; }
.explorer-table tbody tr:hover { background: var(--thuas-light); }

.badge-type {
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 6px;
  font-weight: 500;
  background: var(--accent-light);
  color: var(--accent);
}
.badge-topic {
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 12px;
  font-weight: 500;
  background: var(--accent-light);
  color: var(--accent);
  cursor: pointer;
  display: inline-block;
  margin: 1px;
}
.badge-topic:hover { background: var(--accent); color: #fff; }

/* ---- Data sources table ---- */
.ds-table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 0.82rem; line-height: 1.4; }
.ds-table thead th { background: var(--thuas-dark); color: #fff; padding: 10px 12px; font-weight: 600; text-align: left; font-size: 0.85rem; }
.ds-table thead th:first-child { border-radius: 8px 0 0 0; }
.ds-table thead th:last-child { border-radius: 0 8px 0 0; }
.ds-table tbody td { padding: 8px 12px; border-bottom: 1px solid #E8ECF0; vertical-align: top; }
.ds-table .src-name { font-weight: 700; color: var(--thuas-dark); white-space: nowrap; }
.ds-table .src-name small { font-weight: 400; color: var(--thuas-caption); font-size: 0.88em; }
.ds-table tr.available td { background: #F8FAF8; }
.ds-table tr.partial td { background: #FEFDF6; }
.ds-table tr.unavail td { background: #FDF8F8; }
.ds-table tr.blocked td { background: #F5F5F7; }

.status-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
}
.status-badge.green { background: #DEF7EC; color: #03543F; }
.status-badge.amber { background: #FEF3C7; color: #92400E; }
.status-badge.red { background: #FDE8E8; color: #9B1C1C; }
.status-badge.grey { background: #E5E7EB; color: #4B5563; }

.domain-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.78rem;
  font-weight: 600;
}
.domain-badge.research { background: #E8F0FE; color: #1A56DB; }
.domain-badge.education { background: #FEF3C7; color: #92400E; }
.domain-badge.identity { background: #EDE9FE; color: #6D28D9; }

/* ---- Roadmap styles ---- */
.roadmap-section { max-width: 900px; margin: 0 auto; }
.roadmap-card { background: #fff; border-radius: 10px; border: 1px solid var(--thuas-border); padding: 20px; margin-bottom: 16px; }
.roadmap-card h3 { font-size: 1rem; font-weight: 700; color: var(--thuas-dark); margin-bottom: 8px; }
.roadmap-card p { font-size: 0.88rem; color: #475569; line-height: 1.6; }
.roadmap-card ul { margin-top: 8px; padding-left: 20px; font-size: 0.85rem; color: #475569; line-height: 1.8; }
.roadmap-done { border-left: 4px solid var(--thuas-green); }
.roadmap-gap { border-left: 4px solid #F59E0B; }
.roadmap-future { border-left: 4px solid var(--accent); }

/* ---- SQL editor ---- */
.sql-editor {
  font-family: 'Cascadia Code', 'Fira Code', Consolas, monospace;
  font-size: 0.85rem;
  background: #0F172A;
  color: #E2E8F0;
  border: none;
  border-radius: 8px;
  padding: 14px;
  width: 100%;
  min-height: 160px;
  resize: vertical;
  line-height: 1.6;
  tab-size: 2;
}
.sql-editor:focus { outline: 2px solid var(--thuas-olive); }
.sql-editor::placeholder { color: #475569; }

.sql-result-scroll { max-height: 400px; overflow: auto; border-radius: 8px; border: 1px solid var(--thuas-border); }
.sql-result-table { font-size: 0.78rem; width: 100%; border-collapse: collapse; }
.sql-result-table th { background: #F8FAFC; position: sticky; top: 0; z-index: 1; font-size: 0.72rem; white-space: nowrap; padding: 6px 8px; text-align: left; border-bottom: 1px solid var(--thuas-border); }
.sql-result-table td { white-space: nowrap; max-width: 300px; overflow: hidden; text-overflow: ellipsis; padding: 4px 8px; border-bottom: 1px solid var(--thuas-border); }
.sql-meta { font-size: 0.78rem; color: var(--thuas-caption); display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.sql-error { background: #FEF2F2; border: 1px solid #FECACA; color: #991B1B; border-radius: 8px; padding: 10px 14px; font-family: monospace; font-size: 0.82rem; white-space: pre-wrap; }

/* ---- Spinner ---- */
.spinner { display: none; text-align: center; padding: 40px; }
.spinner.active { display: block; }
.spinner::after {
  content: '';
  display: inline-block;
  width: 28px;
  height: 28px;
  border: 3px solid var(--thuas-border);
  border-top-color: var(--thuas-olive);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Detail panels ---- */
.detail-panel { background: #fff; border-radius: 10px; border: 1px solid var(--thuas-border); padding: 20px; }
.detail-panel h2 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
.detail-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.detail-meta span { font-size: 0.78rem; padding: 3px 8px; border-radius: 6px; background: var(--thuas-light); color: #475569; }
.back-link { font-size: 0.85rem; color: var(--thuas-olive); cursor: pointer; display: inline-flex; align-items: center; gap: 4px; margin-bottom: 10px; }
.back-link:hover { text-decoration: underline; }

/* ---- Chart containers ---- */
.chart-container { position: relative; height: 260px; }

/* ---- Scrollbar (for dark panels) ---- */
.kg-info::-webkit-scrollbar { width: 5px; }
.kg-info::-webkit-scrollbar-track { background: #14161E; }
.kg-info::-webkit-scrollbar-thumb { background: #2A2D3A; border-radius: 3px; }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .portal-nav { padding: 0 12px; gap: 12px; }
  .portal-tab span { display: none; }
  .portal-tab i { font-size: 1.2rem; }
  .ef-search-bar { flex-direction: column; }
  .ef-filters { flex-direction: column; }
  .tab-content-area { padding: 0 12px 12px; }
}

/* ---- Search box (explorer) ---- */
.search-box { position: relative; }
.search-box input { padding-left: 2.2rem; border-radius: 8px; border: 1px solid var(--thuas-border); background: #fff; width: 100%; padding-top: 6px; padding-bottom: 6px; font-size: 0.85rem; }
.search-box input:focus { border-color: var(--thuas-olive); outline: none; box-shadow: 0 0 0 2px rgba(158,167,0,0.15); }
.search-box i { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); color: #94A3B8; font-size: 0.85rem; }

/* ---- Grid helpers ---- */
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 768px) { .grid-2 { grid-template-columns: 1fr; } }

/* ---- Form controls (explorer) ---- */
.form-label { font-size: 0.75rem; color: var(--thuas-caption); display: block; margin-bottom: 2px; }
.form-select, .form-input {
  width: 100%;
  padding: 5px 8px;
  border: 1px solid var(--thuas-border);
  border-radius: 6px;
  font-size: 0.82rem;
  background: #fff;
  color: var(--thuas-dark);
}
.btn {
  padding: 6px 14px;
  border: none;
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  font-weight: 500;
}
.btn-primary { background: var(--thuas-dark); color: #fff; }
.btn-primary:hover { background: #3A556A; }
.btn-outline { background: #fff; color: var(--thuas-caption); border: 1px solid var(--thuas-border); }
.btn-outline:hover { border-color: var(--thuas-dark); color: var(--thuas-dark); }

.text-muted { color: var(--thuas-caption); }
.text-sm { font-size: 0.82rem; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }
.gap-2 { gap: 8px; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-end { align-items: flex-end; }
.justify-between { justify-content: space-between; }

/* ============================================================
   KNOWLEDGE GRAPH - Full canvas with dark theme
   ============================================================ */
.kg-toolbar {
  background: #1A1D27;
  border-bottom: 1px solid #2A2D3A;
  padding: 8px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin: 0 24px;
  border-radius: 10px 10px 0 0;
}
.kg-modes { display: flex; gap: 4px; }
.kg-mode {
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 500;
  background: transparent;
  border: 1px solid #2A2D3A;
  color: #8892A6;
  transition: all 0.15s;
}
.kg-mode:hover { background: #22263A; color: #B0BCD0; }
.kg-mode.active { background: var(--thuas-dark); border-color: var(--thuas-green); color: var(--thuas-green); }
.kg-mode i { margin-right: 4px; }

.kg-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.82rem;
}
.kg-input {
  padding: 5px 10px;
  border-radius: 6px;
  border: 1px solid #2A2D3A;
  background: #14161E;
  color: #E0E0E0;
  font-size: 0.82rem;
  width: 240px;
  outline: none;
}
.kg-input:focus { border-color: var(--thuas-green); }
.kg-select {
  padding: 5px 8px;
  border-radius: 6px;
  border: 1px solid #2A2D3A;
  background: #14161E;
  color: #E0E0E0;
  font-size: 0.82rem;
}
.kg-btn {
  padding: 5px 12px;
  border-radius: 6px;
  border: 1px solid #2A2D3A;
  background: #1A1D27;
  color: #8892A6;
  font-size: 0.82rem;
  cursor: pointer;
  transition: 0.15s;
}
.kg-btn:hover { background: #22263A; color: #B0BCD0; }
.kg-hint { color: #6A7180; font-size: 0.78rem; }

.kg-canvas-wrap {
  position: relative;
  height: calc(100vh - 200px);
  min-height: 500px;
  background: #0F1117;
  margin: 0 24px 24px;
  border-radius: 0 0 10px 10px;
  overflow: hidden;
}
#kg-network { width: 100%; height: 100%; }

.kg-info-panel {
  position: absolute;
  bottom: 16px;
  right: 16px;
  width: 340px;
  max-height: 50vh;
  overflow-y: auto;
  background: #1A1D27;
  border: 1px solid #2A2D3A;
  border-radius: 10px;
  padding: 14px;
  font-size: 0.82rem;
  color: #C8D0DC;
  z-index: 10;
  display: none;
  box-shadow: 0 8px 30px rgba(0,0,0,0.4);
}
.kg-info-panel h3 { color: #7EB8FF; margin-bottom: 6px; font-size: 0.95rem; }
.kg-info-close { position: absolute; top: 6px; right: 10px; cursor: pointer; color: #6A7180; font-size: 1.1rem; }
.kg-info-close:hover { color: #E0E0E0; }
.kg-field { margin-bottom: 5px; }
.kg-field-label { color: #6A7180; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.5px; }

.kg-info-panel::-webkit-scrollbar { width: 5px; }
.kg-info-panel::-webkit-scrollbar-track { background: #14161E; }
.kg-info-panel::-webkit-scrollbar-thumb { background: #2A2D3A; border-radius: 3px; }

.kg-legend {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: #1A1D27CC;
  border: 1px solid #2A2D3A;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.75rem;
  color: #8892A6;
  z-index: 10;
}
.kg-legend-item { display: flex; align-items: center; gap: 6px; margin: 3px 0; }
.kg-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }

.kg-stats {
  position: absolute;
  top: 8px;
  left: 16px;
  background: #1A1D27CC;
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.72rem;
  color: #6A7180;
  z-index: 10;
}

/* ============================================================
   EXPLORER - Sub-navigation, stat cards, charts, SQL
   ============================================================ */
.ex-subnav {
  display: flex;
  gap: 4px;
  padding: 10px 24px;
  border-bottom: 1px solid var(--thuas-border);
  background: #fff;
  flex-wrap: wrap;
}
.ex-tab {
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--thuas-caption);
  text-decoration: none;
  cursor: pointer;
  transition: 0.15s;
  display: flex;
  align-items: center;
  gap: 5px;
}
.ex-tab:hover { background: var(--thuas-light); color: var(--thuas-dark); }
.ex-tab.active { background: var(--thuas-dark); color: #fff; }

.ex-page { display: none; padding: 20px 24px; }
.ex-page.active { display: block; }

/* Stat cards row */
.ex-stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 20px; }
.ex-stat-card {
  background: #fff;
  border-radius: 10px;
  padding: 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  display: flex;
  align-items: center;
  gap: 14px;
  border: 1px solid var(--thuas-border);
}
.ex-stat-icon {
  width: 44px; height: 44px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center; font-size: 1.2rem;
}
.ex-stat-icon.blue { background: #DBEAFE; color: #2563EB; }
.ex-stat-icon.green { background: #DCFCE7; color: #16A34A; }
.ex-stat-icon.purple { background: #EDE9FE; color: #7C3AED; }
.ex-stat-icon.amber { background: #FEF3C7; color: #D97706; }
.ex-stat-val { font-size: 1.4rem; font-weight: 700; color: var(--thuas-dark); }
.ex-stat-label { font-size: 0.78rem; color: var(--thuas-caption); }

/* Chart layout */
.ex-chart-row { display: flex; gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }
.ex-chart-card {
  background: #fff; border: 1px solid var(--thuas-border); border-radius: 10px;
  padding: 16px; flex: 1; min-width: 280px;
}
.ex-chart-card.wide { flex: 2; min-width: 400px; }
.ex-chart-title { font-weight: 600; font-size: 0.92rem; color: var(--thuas-dark); margin-bottom: 10px; }
.ex-chart-wrap { position: relative; height: 260px; }
.ex-chart-wrap.tall { height: 340px; }

/* Count row */
.ex-count-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; font-size: 0.85rem; color: var(--thuas-caption); }

/* Form controls */
.ex-label { font-size: 0.75rem; color: var(--thuas-caption); display: block; margin-bottom: 2px; }
.ex-input {
  width: 100%; padding: 6px 10px; border: 1px solid var(--thuas-border);
  border-radius: 6px; font-size: 0.85rem; background: #fff; color: var(--thuas-dark); outline: none;
}
.ex-input:focus { border-color: var(--thuas-olive); box-shadow: 0 0 0 2px rgba(158,167,0,0.15); }
.ex-select {
  width: 100%; padding: 6px 10px; border: 1px solid var(--thuas-border);
  border-radius: 6px; font-size: 0.85rem; background: #fff; color: var(--thuas-dark);
}
.ef-btn {
  padding: 6px 18px; background: var(--thuas-dark); color: #fff;
  border: none; border-radius: 6px; font-size: 0.85rem; cursor: pointer; font-weight: 500;
  white-space: nowrap;
}
.ef-btn:hover { background: #3A556A; }

/* SQL editor */
.ex-sql-layout { display: flex; gap: 16px; flex-wrap: wrap; }
.ex-sql-main { flex: 2; min-width: 400px; }
.ex-sql-sidebar { flex: 1; min-width: 260px; }
.ex-sql-editor {
  font-family: 'Cascadia Code', 'Fira Code', Consolas, monospace;
  font-size: 0.85rem; background: #0F172A; color: #E2E8F0;
  border: none; border-radius: 8px; padding: 14px;
  width: 100%; min-height: 160px; resize: vertical;
  line-height: 1.6; tab-size: 2;
}
.ex-sql-editor:focus { outline: 2px solid var(--thuas-olive); }
.ex-sql-editor::placeholder { color: #475569; }
.ex-sql-meta { font-size: 0.82rem; color: var(--thuas-caption); margin-bottom: 8px; }

.ex-spinner { display: none; text-align: center; padding: 40px; }
.ex-spinner::after {
  content: '';
  display: inline-block;
  width: 28px; height: 28px;
  border: 3px solid var(--thuas-border); border-top-color: var(--thuas-olive);
  border-radius: 50%; animation: spin 0.8s linear infinite;
}

/* ============================================================
   ROADMAP - Architecture, pipeline, gaps, timeline
   ============================================================ */
.roadmap-section { max-width: 960px; margin: 0 auto 32px; }
.roadmap-section h3 {
  font-size: 1.1rem; font-weight: 700; color: var(--thuas-dark);
  margin-bottom: 16px; padding-bottom: 8px;
  border-bottom: 2px solid var(--thuas-border);
}
.roadmap-section h3 i { color: var(--thuas-green); margin-right: 6px; }

/* Architecture grid */
.arch-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; margin-bottom: 24px; }
.arch-card {
  background: #fff; border: 1px solid var(--thuas-border); border-radius: 10px;
  padding: 16px; display: flex; gap: 12px; align-items: flex-start;
}
.arch-icon {
  width: 40px; height: 40px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.1rem; flex-shrink: 0;
}
.arch-card h4 { font-size: 0.92rem; font-weight: 700; color: var(--thuas-dark); margin-bottom: 4px; }
.arch-card p { font-size: 0.82rem; color: #475569; line-height: 1.5; }

/* Pipeline steps */
.pipeline-steps { display: flex; align-items: flex-start; gap: 0; flex-wrap: wrap; margin-bottom: 24px; }
.pipe-step {
  display: flex; gap: 10px; align-items: flex-start;
  background: #fff; border: 1px solid var(--thuas-border); border-radius: 10px;
  padding: 12px 14px; flex: 1; min-width: 140px;
}
.pipe-num {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--thuas-dark); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.82rem; font-weight: 700; flex-shrink: 0;
}
.pipe-step strong { font-size: 0.85rem; color: var(--thuas-dark); }
.pipe-step p { font-size: 0.78rem; color: #64748B; margin-top: 2px; line-height: 1.4; }
.pipe-arrow { display: flex; align-items: center; padding: 0 6px; color: var(--thuas-caption); font-size: 1.1rem; }

/* Gap cards */
.gap-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 14px; margin-bottom: 24px; }
.gap-card {
  background: #fff; border: 1px solid var(--thuas-border); border-radius: 10px;
  padding: 16px; border-left: 4px solid transparent;
}
.gap-card.critical { border-left-color: #E11D48; }
.gap-card.moderate { border-left-color: #F59E0B; }
.gap-card.low { border-left-color: #06B6D4; }
.gap-badge {
  display: inline-block; padding: 2px 8px; border-radius: 10px;
  font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px;
  margin-bottom: 6px;
}
.gap-badge.critical { background: #FDE8E8; color: #9B1C1C; }
.gap-badge.moderate { background: #FEF3C7; color: #92400E; }
.gap-badge.low { background: #E0F7FA; color: #006064; }
.gap-card h4 { font-size: 0.92rem; font-weight: 700; color: var(--thuas-dark); margin-bottom: 4px; }
.gap-card p { font-size: 0.82rem; color: #475569; line-height: 1.5; }
.gap-card.future-card { border-left-color: var(--thuas-green); }
.gap-badge.future { background: #F0FAF0; color: #2D6A2E; }

.roadmap-note {
  margin-top: 16px;
  padding: 12px 16px;
  background: #F8FAF0;
  border: 1px solid #E8EBCE;
  border-radius: 8px;
  font-size: 0.85rem;
  color: #5A6340;
  line-height: 1.5;
}

/* Timeline */
.timeline { position: relative; padding-left: 28px; }
.timeline::before {
  content: ''; position: absolute; left: 9px; top: 0; bottom: 0;
  width: 2px; background: var(--thuas-border);
}
.tl-item { position: relative; margin-bottom: 24px; }
.tl-marker {
  position: absolute; left: -28px; top: 4px;
  width: 20px; height: 20px; border-radius: 50%;
  border: 3px solid var(--thuas-border); background: #fff; z-index: 1;
}
.tl-item.done .tl-marker { border-color: var(--thuas-green); background: var(--thuas-green); }
.tl-item.current .tl-marker { border-color: var(--thuas-olive); background: #fff; box-shadow: 0 0 0 4px rgba(158,167,0,0.2); }
.tl-item.future .tl-marker { border-color: var(--thuas-border); background: #fff; }
.tl-content {
  background: #fff; border: 1px solid var(--thuas-border); border-radius: 10px;
  padding: 14px 16px;
}
.tl-item.current .tl-content { border-color: var(--thuas-olive); box-shadow: 0 0 0 1px rgba(158,167,0,0.15); }
.tl-date { font-size: 0.75rem; color: var(--thuas-caption); font-weight: 500; }
.tl-content h4 { font-size: 0.95rem; font-weight: 700; color: var(--thuas-dark); margin: 2px 0 4px; }
.tl-content p { font-size: 0.82rem; color: #475569; line-height: 1.5; }

@media (max-width: 768px) {
  .kg-toolbar { margin: 0 12px; padding: 8px 12px; }
  .kg-canvas-wrap { margin: 0 12px 12px; height: calc(100vh - 240px); }
  .kg-info-panel { width: 280px; }
  .ex-page { padding: 16px 12px; }
  .ex-chart-card.wide { min-width: 100%; }
  .pipeline-steps { flex-direction: column; }
  .pipe-arrow { transform: rotate(90deg); padding: 4px 0; }
  .ex-sql-layout { flex-direction: column; }
}