:root {
  --bg-primary: #0f141c;
  --bg-surface: #171f2b;
  --bg-card: #1e293b;
  --border-color: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-gold: #f59e0b;
  --accent-blue: #38bdf8;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --font-serif: 'Newsreader', Georgia, serif;
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-surface: #ffffff;
  --bg-card: #f1f5f9;
  --border-color: #e2e8f0;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Header */
.app-header {
  height: 56px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  z-index: 100;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.detective-badge {
  background: var(--accent-gold);
  color: #000;
  font-weight: 800;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  padding: 2px 8px;
  border-radius: 4px;
}

.app-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.sub-title {
  font-size: 0.8rem;
  color: var(--text-muted);
  border-left: 1px solid var(--border-color);
  padding-left: 0.75rem;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.db-status-pill {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border-color);
}

.live-dot {
  width: 7px;
  height: 7px;
  background: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-green);
}

.btn-icon {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 4px 8px;
  border-radius: 6px;
  cursor: pointer;
}

/* Workbench Container */
.workbench-container {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Left Pane: Book */
.left-pane {
  flex: 1.1;
  display: flex;
  flex-direction: column;
  background: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  overflow: hidden;
}

.book-nav-bar {
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-surface);
  overflow-x: auto;
  white-space: nowrap;
}

.chapter-stepper {
  display: flex;
  gap: 0.5rem;
}

.chapter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.78rem;
  padding: 5px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.chapter-btn:hover {
  background: var(--border-color);
  color: var(--text-primary);
}

.chapter-btn.active {
  background: var(--accent-gold);
  color: #000;
  font-weight: 600;
  border-color: var(--accent-gold);
}

.chapter-content-wrapper {
  flex: 1;
  overflow-y: auto;
  padding: 2.5rem 3.5rem;
}

.chapter-article {
  max-width: 680px;
  margin: 0 auto;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  line-height: 1.75;
  color: var(--text-primary);
}

.chapter-article h1 {
  font-family: var(--font-sans);
  font-size: 1.85rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.chapter-article .subtitle {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--accent-gold);
  margin-bottom: 2rem;
  font-weight: 500;
}

.chapter-article h2, .chapter-article h3 {
  font-family: var(--font-sans);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.chapter-article p {
  margin-bottom: 1.25rem;
}

.chapter-article blockquote {
  border-left: 3px solid var(--accent-gold);
  padding-left: 1.25rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--text-secondary);
}

/* Clickable Verification Badges */
.verify-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-blue);
  border: 1px solid rgba(56, 189, 248, 0.3);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 1px 7px;
  border-radius: 4px;
  cursor: pointer;
  margin: 0 4px;
  transition: all 0.15s ease;
  vertical-align: middle;
}

.verify-badge:hover {
  background: var(--accent-blue);
  color: #000;
  font-weight: 600;
}

/* Resizer */
.pane-resizer {
  width: 4px;
  background: var(--border-color);
  cursor: col-resize;
  transition: background 0.2s;
}

.pane-resizer:hover {
  background: var(--accent-gold);
}

/* Right Pane: Audit */
.right-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
  overflow: hidden;
}

.audit-tabs {
  height: 48px;
  display: flex;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
}

.audit-tab {
  flex: 1;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.audit-tab:hover {
  color: var(--text-primary);
}

.audit-tab.active {
  color: var(--accent-blue);
  border-bottom-color: var(--accent-blue);
  background: var(--bg-card);
}

.tab-content {
  display: none;
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem 2rem;
}

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

.proof-header {
  margin-bottom: 1.5rem;
}

.rule-dial-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-gold);
  letter-spacing: 0.05em;
  margin-bottom: 0.3rem;
}

.proof-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.proof-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* KPI Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 0.75rem;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.kpi-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
}

.kpi-val {
  font-size: 1.15rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--accent-green);
}

/* SQL Box */
.section-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.dossier-section h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.btn-action {
  background: var(--accent-blue);
  color: #000;
  border: none;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: opacity 0.15s;
}

.btn-action:hover {
  opacity: 0.9;
}

.sql-box {
  background: #090d13;
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #a5b4fc;
  overflow-x: auto;
  margin-bottom: 1.5rem;
  line-height: 1.45;
}

/* Traps & Winners Lists */
.traps-list, .winners-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.5rem;
  margin-bottom: 1.5rem;
}

.card-item {
  background: var(--bg-card);
  border-left: 3px solid var(--accent-red);
  padding: 0.65rem 1rem;
  border-radius: 4px;
  font-size: 0.82rem;
}

.card-item.winner {
  border-left-color: var(--accent-green);
}

.card-item strong {
  color: var(--text-primary);
  font-family: var(--font-mono);
  margin-right: 0.5rem;
}

/* Sandbox Sliders */
.sandbox-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  background: var(--bg-card);
  padding: 1rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.slider-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.slider-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.slider-label strong {
  color: var(--accent-gold);
  font-family: var(--font-mono);
}

input[type="range"] {
  accent-color: var(--accent-gold);
  cursor: pointer;
}

.table-scroll-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: 6px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.75rem;
  font-family: var(--font-mono);
}

.data-table th, .data-table td {
  padding: 6px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  background: var(--bg-card);
  color: var(--text-muted);
}

/* Case Dissector */
.case-selector-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}

.btn-chip {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 999px;
  cursor: pointer;
}

.btn-chip.active {
  background: var(--accent-blue);
  color: #000;
  font-weight: 600;
  border-color: var(--accent-blue);
}

.dials-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.dial-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 0.75rem;
  border-radius: 8px;
}

.dial-box h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.dial-status {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--accent-green);
  margin-bottom: 0.4rem;
}

.dial-metrics {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}

.verdict-banner {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--accent-green);
  padding: 1rem;
  border-radius: 8px;
  text-align: center;
}

.verdict-banner h3 {
  color: var(--accent-green);
  font-size: 1rem;
}