/* ==========================================================================
   HCQ Pharmacoepidemiology Portal - Design System & Stylesheet
   Clean Top-Nav Layout • Full-Width Dashboard • Visual Graphs
   ========================================================================== */

:root {
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;
  --primary-900: #1e3a8a;

  --teal-50: #f0fdfa;
  --teal-500: #14b8a6;
  --teal-600: #0d9488;
  --teal-700: #0f766e;

  --navy-950: #0a0f1d;
  --navy-900: #0f172a;
  --navy-800: #1e293b;
  --navy-700: #334155;
  --navy-600: #475569;
  --navy-500: #64748b;
  --navy-400: #94a3b8;
  --navy-300: #cbd5e1;
  --navy-200: #e2e8f0;
  --navy-100: #f1f5f9;
  --navy-50: #f8fafc;

  --surface-bg: #f8fafc;
  --surface-card: #ffffff;
  --surface-border: #e2e8f0;
  --surface-hover: #f1f5f9;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  --accent-rose: #e11d48;
  --accent-rose-bg: #ffe4e6;
  --accent-amber: #d97706;
  --accent-amber-bg: #fef3c7;
  --accent-emerald: #059669;
  --accent-emerald-bg: #d1fae5;
  --accent-purple: #7c3aed;
  --accent-purple-bg: #ede9fe;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.08), 0 2px 4px -2px rgb(0 0 0 / 0.06);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.04);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.05);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
}

[data-theme="dark"] {
  --surface-bg: #090d16;
  --surface-card: #111827;
  --surface-border: #1f2937;
  --surface-hover: #1e293b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --navy-100: #1e293b;
  --navy-50: #0f172a;
  --shadow-md: 0 4px 12px 0 rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 24px -3px rgba(0, 0, 0, 0.5);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--surface-bg);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* ==========================================================================
   Typography & Base Components
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.25;
}

p {
  color: var(--text-muted);
}

a {
  color: var(--primary-600);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--primary-700);
  text-decoration: underline;
}

code, pre {
  font-family: var(--font-mono);
}

/* ==========================================================================
   Top Portal Header & In-Site Navigation (NO Left Sidebar)
   ========================================================================== */
.portal-header {
  background: var(--surface-card);
  border-bottom: 1px solid var(--surface-border);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}

.header-main-row {
  max-width: 1560px;
  margin: 0 auto;
  padding: 0.85rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-icon-wrap {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary-600), var(--teal-600));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.25);
  flex-shrink: 0;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.search-box-global {
  position: relative;
  width: 260px;
}

.search-box-global input {
  width: 100%;
  padding: 0.45rem 0.85rem 0.45rem 2.2rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--surface-border);
  background: var(--surface-bg);
  color: var(--text-main);
  font-size: 0.82rem;
  transition: all 0.2s ease;
}

.search-box-global input:focus {
  outline: none;
  border-color: var(--primary-600);
  background: var(--surface-card);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.search-box-global svg {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.btn-header-action {
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 0.45rem 0.8rem;
  color: var(--text-main);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all 0.15s ease;
}

.btn-header-action:hover {
  background: var(--surface-hover);
  border-color: var(--primary-600);
}

/* In-Site Tab Navigation Bar */
.header-nav-row {
  border-top: 1px solid var(--surface-border);
  background: var(--surface-card);
  overflow-x: auto;
  scrollbar-width: none;
}

.header-nav-row::-webkit-scrollbar {
  display: none;
}

.nav-pill-list {
  max-width: 1560px;
  margin: 0 auto;
  padding: 0.4rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  list-style: none;
  white-space: nowrap;
}

.nav-pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s ease;
  border: 1px solid transparent;
}

.nav-pill-btn:hover {
  background: var(--surface-hover);
  color: var(--text-main);
  text-decoration: none;
}

.nav-pill-btn.active {
  background: var(--primary-600);
  color: #fff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.nav-pill-btn svg {
  flex-shrink: 0;
  opacity: 0.85;
}

.nav-pill-btn.active svg {
  opacity: 1;
}

/* ==========================================================================
   Full-Width Content Layout
   ========================================================================== */
.content-body {
  padding: 2rem 1.75rem;
  max-width: 1560px;
  width: 100%;
  margin: 0 auto;
}

.tab-pane {
  display: none;
  animation: fadeIn 0.2s ease-in-out;
}

.tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Hero Banner & Key Metrics
   ========================================================================== */
.hero-banner {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 60%, #0d9488 100%);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2.5rem;
  color: #fff;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.hero-banner::after {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(4px);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-title {
  font-size: 1.85rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: 0.6rem;
  max-width: 980px;
  line-height: 1.25;
}

.hero-description {
  font-size: 0.95rem;
  color: #cbd5e1;
  max-width: 900px;
  margin-bottom: 1.5rem;
}

.hero-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 1.25rem;
}

.meta-item-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  color: #94a3b8;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.meta-item-value {
  font-size: 0.85rem;
  color: #f1f5f9;
  font-weight: 600;
}

/* Metric KPI Cards Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.metric-card {
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
  overflow: hidden;
}

.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.metric-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.metric-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.metric-icon-wrap {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.metric-val {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.metric-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
}

/* ==========================================================================
   Visual Graphs Dashboard Grid
   ========================================================================== */
.visual-graphs-section {
  margin-bottom: 2.5rem;
}

.section-heading-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.section-heading-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.visual-analytics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (max-width: 1080px) {
  .visual-analytics-grid {
    grid-template-columns: 1fr;
  }
}

.chart-card {
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.chart-card:hover {
  box-shadow: var(--shadow-md);
}

.chart-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1rem;
  gap: 0.75rem;
}

.chart-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
}

.chart-card-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.chart-container-box {
  position: relative;
  width: 100%;
  height: 290px;
  margin-bottom: 0.75rem;
}

.chart-meta-footer {
  margin-top: auto;
  border-top: 1px solid var(--surface-border);
  padding-top: 0.75rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ==========================================================================
   Panels & Reusable Components
   ========================================================================== */
.card-panel {
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--surface-border);
  flex-wrap: wrap;
  gap: 0.75rem;
}

.panel-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.panel-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
}

.badge-blue { background: #dbeafe; color: #1e40af; }
.badge-purple { background: #ede9fe; color: #5b21b6; }
.badge-emerald { background: #d1fae5; color: #065f46; }
.badge-amber { background: #fef3c7; color: #92400e; }
.badge-rose { background: #ffe4e6; color: #9f1239; }
.badge-slate { background: #e2e8f0; color: #334155; }
.badge-teal { background: #ccfbf1; color: #115e59; }

[data-theme="dark"] .badge-blue { background: rgba(59, 130, 246, 0.2); color: #93c5fd; }
[data-theme="dark"] .badge-purple { background: rgba(139, 92, 246, 0.2); color: #c4b5fd; }
[data-theme="dark"] .badge-emerald { background: rgba(16, 185, 129, 0.2); color: #6ee7b7; }
[data-theme="dark"] .badge-amber { background: rgba(245, 158, 11, 0.2); color: #fcd34d; }
[data-theme="dark"] .badge-rose { background: rgba(244, 63, 94, 0.2); color: #fda4af; }
[data-theme="dark"] .badge-slate { background: rgba(100, 116, 139, 0.2); color: #cbd5e1; }
[data-theme="dark"] .badge-teal { background: rgba(20, 184, 166, 0.2); color: #5eead4; }

/* Filter Tabs / Pills */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.filter-btn {
  background: var(--surface-bg);
  border: 1px solid var(--surface-border);
  color: var(--text-muted);
  border-radius: var(--radius-full);
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-btn:hover {
  background: var(--surface-hover);
  color: var(--text-main);
}

.filter-btn.active {
  background: var(--primary-600);
  color: #fff;
  border-color: var(--primary-600);
  font-weight: 600;
}

/* ==========================================================================
   Data Tables
   ========================================================================== */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--surface-border);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.85rem;
}

.data-table th {
  background: var(--surface-bg);
  color: var(--text-muted);
  font-weight: 600;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--surface-border);
  white-space: nowrap;
}

.data-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--surface-border);
  color: var(--text-main);
  vertical-align: middle;
}

.data-table tbody tr:hover {
  background: var(--surface-hover);
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

/* Callout Box */
.callout {
  border-left: 4px solid var(--primary-600);
  background: var(--navy-50);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 1.25rem 0;
  font-size: 0.875rem;
}

.callout.callout-rose {
  border-left-color: var(--accent-rose);
  background: rgba(225, 29, 72, 0.05);
}

.callout.callout-amber {
  border-left-color: var(--accent-amber);
  background: rgba(217, 119, 6, 0.05);
}

.callout.callout-teal {
  border-left-color: var(--teal-600);
  background: rgba(13, 148, 136, 0.05);
}

.callout strong {
  color: var(--text-main);
}

/* ==========================================================================
   Calculators (Retinal Risk & ROR)
   ========================================================================== */
.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

@media (max-width: 900px) {
  .calc-grid {
    grid-template-columns: 1fr;
  }
}

.calc-inputs-pane {
  background: var(--surface-bg);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.form-input, .form-select {
  width: 100%;
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--surface-border);
  background: var(--surface-card);
  color: var(--text-main);
  font-size: 0.875rem;
  transition: border-color 0.15s ease;
}

.form-input:focus, .form-select:focus {
  outline: none;
  border-color: var(--primary-600);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  color: var(--text-main);
  cursor: pointer;
}

.calc-result-pane {
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.calc-hero-stat {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
}

.calc-hero-stat.risk-safe {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.calc-hero-stat.risk-warning {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.calc-hero-stat.risk-danger {
  background: rgba(244, 63, 94, 0.1);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

/* ==========================================================================
   Triangulation Scatter & Disconnect Matrix
   ========================================================================== */
.scatter-canvas-container {
  position: relative;
  width: 100%;
  height: 420px;
  background: var(--surface-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--surface-border);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.disconnect-quadrant-legend {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.quadrant-legend-card {
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  font-size: 0.78rem;
  border: 1px solid var(--surface-border);
}

/* ==========================================================================
   Epistemic Boundaries Cards
   ========================================================================== */
.boundary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.25rem;
}

.boundary-card {
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.boundary-header {
  background: var(--surface-bg);
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--surface-border);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text-main);
}

.boundary-body {
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.boundary-can {
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  background: rgba(16, 185, 129, 0.08);
  border-left: 3px solid #10b981;
  font-size: 0.8rem;
}

.boundary-cannot {
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  background: rgba(244, 63, 94, 0.08);
  border-left: 3px solid #f43f5e;
  font-size: 0.8rem;
}

/* ==========================================================================
   Sources & Evidence Library (#sources)
   ========================================================================== */
.sources-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 1.5rem;
  margin-top: 1.25rem;
}

@media (max-width: 640px) {
  .sources-card-grid {
    grid-template-columns: 1fr;
  }
}

.source-card {
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
  border-left: 4px solid var(--primary-600);
}

.source-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.source-card.level-1 { border-left-color: var(--primary-600); }
.source-card.level-2 { border-left-color: var(--accent-purple); }
.source-card.level-3 { border-left-color: var(--accent-amber); }
.source-card.level-4 { border-left-color: var(--teal-600); }
.source-card.level-5 { border-left-color: var(--accent-rose); }
.source-card.level-6 { border-left-color: #6366f1; }
.source-card.level-reg { border-left-color: var(--accent-emerald); }

.source-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.65rem;
}

.source-title-link {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.35;
  margin-bottom: 0.5rem;
  display: block;
}

.source-title-link:hover {
  color: var(--primary-600);
}

.source-authors {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.source-meta-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.source-meta-bar strong {
  color: var(--text-main);
}

.source-tags-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.source-tag {
  background: var(--surface-bg);
  border: 1px solid var(--surface-border);
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  font-size: 0.68rem;
  color: var(--navy-600);
  font-weight: 500;
}

[data-theme="dark"] .source-tag {
  color: var(--navy-300);
}

.source-finding-box {
  background: var(--surface-bg);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
  margin-bottom: 1.15rem;
  font-size: 0.82rem;
  line-height: 1.5;
}

.source-finding-box strong {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary-600);
  margin-bottom: 0.25rem;
}

.source-actions-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: wrap;
  border-top: 1px solid var(--surface-border);
  padding-top: 0.85rem;
  margin-top: auto;
}

.btn-cite-action {
  background: var(--surface-bg);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.15s ease;
}

.btn-cite-action:hover {
  background: var(--surface-hover);
  border-color: var(--primary-600);
  color: var(--primary-600);
}

.btn-cite-primary {
  background: var(--primary-600);
  color: #fff;
  border-color: var(--primary-600);
}

.btn-cite-primary:hover {
  background: var(--primary-700);
  color: #fff;
}

/* Floating copy toast notification */
.copy-toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--navy-900);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow-xl);
  display: none;
  align-items: center;
  gap: 0.5rem;
  z-index: 1000;
  animation: toastFade 0.2s ease;
}

.copy-toast.active {
  display: flex;
}

@keyframes toastFade {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Evidence Hierarchy Visual Bar */
.hierarchy-pyramid-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.5rem;
  margin: 1.25rem 0;
}

.hierarchy-tier-card {
  background: var(--surface-bg);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-sm);
  padding: 0.65rem;
  text-align: center;
  transition: all 0.15s ease;
  cursor: pointer;
}

.hierarchy-tier-card:hover, .hierarchy-tier-card.active {
  border-color: var(--primary-600);
  background: rgba(37, 99, 235, 0.05);
}

.hierarchy-tier-count {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1;
}

.hierarchy-tier-name {
  font-size: 0.68rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* ==========================================================================
   Modals
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  max-width: 720px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  padding: 2rem;
  position: relative;
  animation: modalPop 0.25s ease;
}

@keyframes modalPop {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 0.3rem;
  border-radius: var(--radius-sm);
}

.modal-close-btn:hover {
  color: var(--text-main);
  background: var(--surface-hover);
}

/* ==========================================================================
   Responsive & Print
   ========================================================================== */
@media (max-width: 768px) {
  .content-body {
    padding: 1rem;
  }

  .hero-banner {
    padding: 1.5rem;
  }

  .hero-title {
    font-size: 1.4rem;
  }

  .header-main-row {
    padding: 0.75rem 1rem;
  }

  .search-box-global {
    width: 100%;
  }

  .chart-container-box {
    height: 240px;
  }
}

@media print {
  .portal-header, .filter-bar, .panel-actions, .btn-header-action, .btn-cite-action {
    display: none !important;
  }

  .tab-pane {
    display: block !important;
    page-break-after: always;
  }

  body {
    background: #fff !important;
    color: #000 !important;
  }

  .card-panel, .chart-card {
    border: 1px solid #ccc !important;
    box-shadow: none !important;
  }
}