/* ==========================================================================
   LOOSEWIRE — EDITORIAL APPSPEC DESIGN SYSTEM
   Dark · Minimal · Swiss-Grid · Helvetica-like · Technical · High Discipline
   ========================================================================== */

:root {
  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Spacing Scale (4px Base) */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-8: 32px;
  --sp-10: 40px;
  --sp-12: 48px;
  --sp-16: 64px;

  /* Deep Charcoal Surfaces (Never Pure #000000) */
  --bg-app: #0d0e12;
  --bg-sidebar: #121318;
  --surface-1: #15171e;
  --surface-2: #1a1d26;
  --surface-3: #222632;
  --surface-hover: #1e212c;

  /* Restrained 1px Borders */
  --border-subtle: #1e212b;
  --border-medium: #272b38;
  --border-strong: #363b4d;

  /* Typography Colors */
  --text-primary: #f0f1f4;
  --text-secondary: #9aa0ae;
  --text-muted: #5e6473;
  --text-faint: #414654;

  /* Restrained Semantic Accents (Desaturated, Never Neon) */
  --critical: #d9584c;
  --critical-bg: rgba(217, 88, 76, 0.12);
  --critical-border: rgba(217, 88, 76, 0.28);

  --high: #d98538;
  --high-bg: rgba(217, 133, 56, 0.12);
  --high-border: rgba(217, 133, 56, 0.28);

  --medium: #c7a838;
  --medium-bg: rgba(199, 168, 56, 0.12);
  --medium-border: rgba(199, 168, 56, 0.28);

  --low: #688275;
  --low-bg: rgba(104, 130, 117, 0.12);
  --low-border: rgba(104, 130, 117, 0.28);

  --positive: #48a66d;
  --positive-bg: rgba(72, 166, 109, 0.12);
  --positive-border: rgba(72, 166, 109, 0.28);

  --accent-blue: #4f7ee8;
  --accent-purple: #8672db;

  /* Crisp Border Radius */
  --radius-xs: 3px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  --transition-fast: 0.14s ease-out;
}

/* ---------- RESET & BASE ---------- */

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

html, body {
  background-color: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}

::selection {
  background-color: var(--surface-3);
  color: var(--text-primary);
}

.monospace {
  font-family: var(--font-mono);
}

.tabular {
  font-variant-numeric: tabular-nums;
}

/* ---------- LAYOUT SHELL ---------- */

.app-shell {
  display: flex;
  min-height: 100vh;
}

/* ---------- SIDEBAR ---------- */

.sidebar {
  width: 228px;
  flex-shrink: 0;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: sticky;
  top: 0;
  z-index: 40;
}

.sidebar-header {
  padding: var(--sp-8) var(--sp-6) var(--sp-6);
  border-bottom: 1px solid var(--border-subtle);
}

.wordmark {
  font-family: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.045em;
  color: var(--text-primary);
  line-height: 1;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  padding: var(--sp-6) var(--sp-3);
  gap: var(--sp-6);
  flex: 1;
}

.sidebar-group {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.sidebar-group-title {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0 10px var(--sp-1);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  width: 100%;
  padding: 9px 10px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 13.5px;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
}

.nav-item:hover {
  color: var(--text-primary);
  background-color: var(--surface-1);
}

.nav-item.active {
  color: var(--text-primary);
  background-color: var(--surface-2);
  border-color: var(--border-subtle);
  font-weight: 600;
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-muted);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.nav-item.active .nav-index {
  color: var(--text-secondary);
}

.nav-label {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- MAIN CONTENT AREA ---------- */

.main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.content {
  max-width: 1120px;
  width: 100%;
  margin: 0 auto;
  padding: var(--sp-10) var(--sp-10) var(--sp-16);
}

.view {
  display: none;
}

.view.active {
  display: block;
  animation: fadeIn 0.18s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0.7; transform: translateY(2px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- EDITORIAL HEADERS & DIVIDERS ---------- */

.view-header {
  margin-bottom: var(--sp-6);
}

.view-eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--sp-2);
}

.view-title {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--sp-2);
}

.view-description {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 640px;
}

.editorial-divider {
  height: 1px;
  background-color: var(--border-subtle);
  margin: var(--sp-8) 0;
  width: 100%;
}

.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--sp-4);
}

/* ---------- BUTTONS ---------- */

.btn-primary {
  background-color: var(--text-primary);
  color: #0d0e12;
  border: 1px solid var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 8px 18px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
}

.btn-primary:hover {
  opacity: 0.92;
}

.btn-primary:active {
  transform: scale(0.99);
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 500;
  padding: 6px 12px;
  cursor: pointer;
  margin-bottom: var(--sp-4);
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.btn-back:hover {
  color: var(--text-primary);
  border-color: var(--border-medium);
  background-color: var(--surface-1);
}

/* ---------- SCAN PAGE ---------- */

.scan-workspace {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--sp-8);
  align-items: start;
}

.drop-target {
  background-color: var(--surface-1);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: var(--sp-10) var(--sp-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.drop-target:hover,
.drop-target.drag-over {
  border-color: var(--border-strong);
  background-color: var(--surface-2);
}

.drop-target-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--surface-2);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-4);
  transition: color var(--transition-fast);
}

.drop-target:hover .drop-target-icon {
  color: var(--text-primary);
}

.drop-target-title {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.drop-target-hint {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: var(--sp-5);
}

.upload-status {
  font-size: 13.5px;
  min-height: 20px;
  margin: var(--sp-3) 0 0;
  font-weight: 500;
  color: var(--text-secondary);
}

.upload-status.error {
  color: var(--critical);
}

.upload-status.success {
  color: var(--positive);
}

.upload-status.info {
  color: var(--text-secondary);
}

/* Scan Stages Progress Card */
.scan-stages-card {
  margin-top: var(--sp-5);
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
}

.scan-stages-header {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: var(--sp-3);
}

.scan-stages-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.scan-stage-row {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: 13px;
  padding: 4px 0;
}

.scan-stage-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  width: 20px;
}

.scan-stage-label {
  flex: 1;
  color: var(--text-muted);
  font-weight: 400;
}

.scan-stage-row.done .scan-stage-label {
  color: var(--text-secondary);
}

.scan-stage-row.running .scan-stage-label {
  color: var(--text-primary);
  font-weight: 500;
}

.scan-stage-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  color: var(--text-muted);
}

.scan-stage-badge.done {
  color: var(--positive);
  background-color: var(--positive-bg);
}

.scan-stage-badge.running {
  color: var(--text-primary);
  background-color: var(--surface-3);
}

/* Analysis Grid (Checks) */
.analysis-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3);
}

.analysis-cell {
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
  transition: border-color var(--transition-fast);
}

.analysis-cell:hover {
  border-color: var(--border-medium);
}

.analysis-cell-head {
  display: flex;
  align-items: baseline;
  gap: var(--sp-2);
  margin-bottom: var(--sp-2);
}

.analysis-num {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-muted);
}

.analysis-name {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.analysis-desc {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Scope Row */
.scope-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3) var(--sp-8);
}

.scope-item {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 12.5px;
  color: var(--text-muted);
  font-weight: 400;
}

.scope-bullet {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--text-muted);
}

/* ---------- FINDINGS PAGE ---------- */

.findings-meta-bar {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: 13.5px;
  color: var(--text-muted);
  margin-top: 2px;
}

.meta-item {
  color: var(--text-secondary);
}

.meta-separator {
  color: var(--text-muted);
}

.status-clean {
  color: var(--positive);
  font-weight: 500;
}

/* Severity Distribution Overview */
.findings-overview-bar {
  margin-bottom: 0;
}

.overview-section-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: var(--sp-3);
}

.severity-dist-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-3);
}

.severity-dist-card {
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--sp-3) var(--sp-4);
  transition: border-color var(--transition-fast);
}

.severity-dist-card.is-zero {
  opacity: 0.55;
}

.severity-dist-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-2);
}

.severity-dist-val {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.severity-dist-track {
  height: 4px;
  background-color: var(--surface-2);
  border-radius: 2px;
  overflow: hidden;
}

.severity-dist-fill {
  height: 100%;
  border-radius: 2px;
}

.severity-dist-fill.critical { background-color: var(--critical); }
.severity-dist-fill.high { background-color: var(--high); }
.severity-dist-fill.medium { background-color: var(--medium); }
.severity-dist-fill.low { background-color: var(--low); }

/* Severity Pill */
.severity-pill {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: var(--radius-xs);
  display: inline-block;
  line-height: 1.4;
}

.severity-pill.critical {
  color: var(--critical);
  background-color: var(--critical-bg);
  border: 1px solid var(--critical-border);
}

.severity-pill.high {
  color: var(--high);
  background-color: var(--high-bg);
  border: 1px solid var(--high-border);
}

.severity-pill.medium {
  color: var(--medium);
  background-color: var(--medium-bg);
  border: 1px solid var(--medium-border);
}

.severity-pill.low {
  color: var(--low);
  background-color: var(--low-bg);
  border: 1px solid var(--low-border);
}

.confidence-pill {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* Split Investigation Layout */
.investigation {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: var(--sp-6);
  min-height: 540px;
  align-items: stretch;
}

.finding-list-pane {
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  box-sizing: border-box;
}

.pane-header {
  padding: var(--sp-3) var(--sp-4);
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--surface-1);
  flex-shrink: 0;
}

.pane-title {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.finding-list {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow-y: auto;
}

.finding-item {
  height: 98px;
  min-height: 98px;
  max-height: 98px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--sp-4);
  border-bottom: 1px solid var(--border-subtle);
  border-left: 2px solid transparent;
  cursor: pointer;
  background-color: var(--surface-1);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
  box-sizing: border-box;
  flex-shrink: 0;
}

.finding-item:last-child {
  border-bottom: none;
}

.finding-item:hover {
  background-color: var(--surface-hover);
}

.finding-item.selected {
  background-color: var(--surface-2);
  border-left-color: var(--text-primary);
}

.finding-item.dismissed {
  opacity: 0.55;
}

.finding-item-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0;
}

.finding-item-title {
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  text-transform: capitalize;
  margin-bottom: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.finding-item-loc {
  font-size: 11.5px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.finding-item-loc .line-num {
  color: var(--text-secondary);
}

/* Detail Pane */
.finding-detail-pane {
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--sp-6);
  height: 100%;
  overflow-y: auto;
  box-sizing: border-box;
}

.finding-detail-back {
  display: none;
}

.detail-header {
  margin-bottom: var(--sp-6);
}

.detail-badges {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-3);
  flex-wrap: wrap;
}

.confidence-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.rule-key {
  font-size: 11px;
  color: var(--text-muted);
}

.detail-headline {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-transform: capitalize;
  margin-bottom: var(--sp-2);
}

.detail-description {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.detail-section {
  margin-top: var(--sp-6);
}

/* Code Reference Box */
.code-ref-card {
  background-color: var(--bg-app);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.code-ref-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  background-color: var(--surface-2);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 11.5px;
}

.code-ref-file {
  color: var(--text-secondary);
}

.code-ref-line-tag {
  color: var(--text-muted);
}

.code-ref-body {
  display: flex;
  padding: var(--sp-3) 0;
  font-size: 12.5px;
  line-height: 1.5;
}

.code-ref-gutter {
  width: 44px;
  text-align: right;
  padding-right: var(--sp-3);
  color: var(--text-muted);
  border-right: 1px solid var(--border-subtle);
  user-select: none;
}

.code-ref-content {
  padding-left: var(--sp-3);
  padding-right: var(--sp-4);
  color: var(--text-primary);
  flex: 1;
}

.code-flagged-marker {
  color: var(--critical);
  font-size: 10px;
  margin-right: 4px;
}

.code-flagged-text {
  color: var(--text-primary);
}

/* Callout Boxes */
.detail-callout {
  background-color: var(--surface-2);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: var(--sp-4);
}

.risk-callout {
  border-left-color: var(--high);
}

.fix-callout {
  border-left-color: var(--positive);
}

.callout-text {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.callout-text.font-fix {
  color: var(--text-primary);
  font-family: var(--font-sans);
}

/* Empty State */
.empty-state {
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--sp-12) var(--sp-6);
  text-align: center;
}

.empty-state-inner {
  max-width: 440px;
  margin: 0 auto;
}

.empty-state-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: var(--sp-2);
}

.empty-state-inner p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.loading-placeholder {
  color: var(--text-muted);
  font-size: 13px;
  padding: var(--sp-8) 0;
}

/* ---------- METRICS PAGE ---------- */

.metrics-scope-bar {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

.metrics-block {
  margin-bottom: 0;
}

/* Hero Metrics 3-Col Grid */
.hero-metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
}

.hero-metric-tile {
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--sp-5) var(--sp-6);
}

.hero-metric-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: var(--sp-2);
}

.hero-metric-value {
  font-size: 38px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--text-primary);
  margin-bottom: var(--sp-4);
}

.hero-metric-scale {
  height: 4px;
  background-color: var(--surface-2);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: var(--sp-3);
}

.hero-metric-bar {
  height: 100%;
  background-color: var(--text-primary);
  border-radius: 2px;
}

.hero-metric-sub {
  font-size: 12px;
  color: var(--text-muted);
}

/* Rule Performance Table */
.table-container {
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--sp-4);
}

.rule-matrix {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

.rule-matrix th {
  padding: var(--sp-3) var(--sp-4);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--surface-1);
}

.rule-matrix td {
  padding: 11px var(--sp-4);
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.rule-matrix tr:last-child td {
  border-bottom: none;
}

.rule-matrix tr:hover td {
  background-color: var(--surface-hover);
}

.rule-matrix th.num-col,
.rule-matrix td.num-col {
  text-align: right;
}

.rule-matrix th.status-col,
.rule-matrix td.status-col {
  text-align: right;
  width: 100px;
}

.rule-name-cell {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  color: var(--text-primary);
  font-weight: 500;
}

.rule-display-name {
  text-transform: capitalize;
  color: var(--text-primary);
}

.status-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-indicator.perfect {
  background-color: var(--positive);
}

.status-indicator.imperfect {
  background-color: var(--high);
}

.highlight-metric {
  color: var(--text-primary);
  font-weight: 500;
}

.matrix-status-pill {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
}

.matrix-status-pill.perfect {
  color: var(--positive);
  background-color: var(--positive-bg);
}

.matrix-status-pill.imperfect {
  color: var(--high);
  background-color: var(--high-bg);
}

/* Rule Comparison Grid */
.rule-comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3);
}

.rule-comp-card {
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
}

.rule-comp-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-3);
}

.rule-comp-name {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  text-transform: capitalize;
}

.rule-comp-stat {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

.rule-comp-bars {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rule-comp-bar-row {
  display: grid;
  grid-template-columns: 70px 1fr 48px;
  align-items: center;
  gap: var(--sp-2);
  font-size: 11px;
}

.rule-bar-lbl {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}

.rule-bar-track {
  height: 4px;
  background-color: var(--surface-2);
  border-radius: 2px;
  overflow: hidden;
}

.rule-bar-fill {
  height: 100%;
  border-radius: 2px;
}

.rule-bar-fill.prec {
  background-color: var(--text-primary);
}

.rule-bar-fill.rec {
  background-color: var(--text-secondary);
}

.rule-bar-val {
  text-align: right;
  color: var(--text-secondary);
  font-size: 11.5px;
}

/* Methodology Section */
.methodology-split {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--sp-8);
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--sp-6);
}

.methodology-lead {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.6;
  margin-bottom: var(--sp-3);
}

.methodology-body {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.6;
}

.methodology-stats-col {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  border-left: 1px solid var(--border-subtle);
  padding-left: var(--sp-6);
  justify-content: center;
}

.method-fact-row {
  display: flex;
  align-items: baseline;
  gap: var(--sp-3);
}

.fact-num {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  min-width: 28px;
}

.fact-lbl {
  font-size: 12.5px;
  color: var(--text-muted);
}

/* Estimated Value / Cost Model */
.cost-model-card {
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--sp-6);
}

.cost-headline-row {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  margin-bottom: var(--sp-5);
  flex-wrap: wrap;
}

.cost-figure {
  font-size: 42px;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  line-height: 1;
}

.cost-tag-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.cost-tag-subtitle {
  font-size: 12.5px;
  color: var(--text-muted);
  margin-top: 2px;
}

.cost-assumptions-box {
  background-color: var(--surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: var(--sp-3) var(--sp-4);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-2) var(--sp-3);
  font-size: 12px;
  color: var(--text-secondary);
}

.assumption-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background-color: var(--surface-1);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
}

.assumption-sep {
  color: var(--text-faint);
}

.assumption-disclaimer {
  width: 100%;
  font-size: 11.5px;
  color: var(--text-muted);
  margin-top: 4px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 6px;
}

.info-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  background-color: var(--surface-2);
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  padding: 0;
  margin-left: 6px;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
  vertical-align: middle;
}

.info-icon-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
  background-color: var(--surface-3);
}

.info-icon-btn:focus-visible {
  outline: 2px solid var(--border-strong);
  outline-offset: 1px;
}

/* ==========================================================================
   PRODUCT HANDBOOK / GUIDE STYLES
   ========================================================================== */

.guide-disclaimer-callout {
  background-color: var(--surface-1);
  border-left: 3px solid var(--medium);
  border-radius: var(--radius-xs);
  padding: var(--sp-3) var(--sp-4);
  margin: var(--sp-4) 0;
  font-size: 14px;
  color: var(--text-primary);
  line-height: 1.6;
}

.guide-disclaimer-callout strong {
  color: var(--text-primary);
}

.guide-container {
  margin-top: var(--sp-2);
}

.guide-header {
  margin-bottom: var(--sp-6);
}

.guide-main-title {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: var(--sp-2);
}

.guide-lead {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 720px;
}

.guide-divider {
  height: 1px;
  background-color: var(--border-subtle);
  margin: var(--sp-8) 0;
}

.guide-section {
  display: flex;
  gap: var(--sp-6);
  align-items: flex-start;
}

.guide-section-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  width: 28px;
  flex-shrink: 0;
  padding-top: 2px;
  letter-spacing: -0.02em;
}

.guide-section-content {
  flex: 1;
  min-width: 0;
}

.guide-section-title {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--text-primary);
  margin-bottom: var(--sp-3);
}

.guide-sub-title {
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin: var(--sp-4) 0 var(--sp-2);
}

.guide-p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--sp-3);
}

.guide-p:last-child {
  margin-bottom: 0;
}

.guide-p code {
  font-family: var(--font-mono);
  font-size: 12.5px;
  background-color: var(--surface-2);
  border: 1px solid var(--border-subtle);
  padding: 1px 5px;
  border-radius: var(--radius-xs);
  color: var(--text-primary);
}

/* Guide Flow Cards (Conceptual Flows) */
.guide-flow-card {
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: var(--sp-4) 0 var(--sp-3);
}

.guide-flow-row {
  padding: var(--sp-3) var(--sp-4);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.guide-flow-row.insecure {
  background-color: rgba(217, 88, 76, 0.05);
  border-bottom: 1px solid var(--border-subtle);
}

.guide-flow-row.secure {
  background-color: rgba(72, 166, 109, 0.05);
}

.flow-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.flow-tag.tag-bad {
  color: var(--critical);
}

.flow-tag.tag-good {
  color: var(--positive);
}

.flow-steps {
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  color: var(--text-secondary);
}

.flow-arr {
  color: var(--text-muted);
}

.flow-bad {
  color: var(--critical);
  font-weight: 500;
}

.flow-good {
  color: var(--positive);
  font-weight: 500;
}

/* Example Validation Box */
.guide-example-card {
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
  margin: var(--sp-4) 0 var(--sp-3);
}

.example-line {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 12.5px;
  margin-bottom: 6px;
}

.example-label {
  color: var(--text-muted);
}

.example-val {
  color: var(--text-primary);
  font-weight: 500;
}

.example-val.warning {
  color: var(--high);
  font-weight: 600;
}

.example-val.status-fail {
  color: var(--critical);
  font-weight: 600;
}

.example-divider {
  height: 1px;
  background-color: var(--border-subtle);
  margin: var(--sp-2) 0 var(--sp-3);
}

/* 6-Step Pipeline Grid */
.guide-steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
  margin-top: var(--sp-3);
}

.guide-step-item {
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: var(--sp-3) var(--sp-4);
}

.guide-step-idx {
  font-size: 10.5px;
  color: var(--text-muted);
  margin-bottom: 4px;
  display: block;
}

.guide-step-name {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.guide-step-desc {
  font-size: 11.5px;
  color: var(--text-muted);
  line-height: 1.45;
}

/* Finding Fields List */
.guide-fields-list {
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: var(--sp-3);
}

.guide-field-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: var(--sp-4);
  padding: 11px var(--sp-4);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 14px;
  align-items: baseline;
}

.guide-field-row:last-child {
  border-bottom: none;
}

.guide-field-name {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 13px;
}

.guide-field-desc {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Metrics Explanation Grid */
.guide-metrics-expl-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
  margin-top: var(--sp-3);
}

.guide-metric-card {
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
}

.metric-expl-title {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.metric-expl-formula {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: var(--sp-3);
}

.metric-expl-example {
  background-color: var(--surface-2);
  border-radius: var(--radius-xs);
  padding: 8px 10px;
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.55;
  border-left: 2px solid var(--border-strong);
  margin-top: var(--sp-2);
}

/* Cost Assumptions Breakdown */
.guide-assumptions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3);
  margin-top: var(--sp-3);
}

.guide-assumption-card {
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: var(--sp-3) var(--sp-4);
}

.assumption-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.guide-calc-list {
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: var(--sp-3) var(--sp-4);
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: 13.5px;
  color: var(--text-secondary);
}

.guide-calc-list li strong {
  color: var(--text-primary);
}

/* Pillars Grid */
.guide-pillars-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-2) var(--sp-6);
  margin-top: var(--sp-3);
}

.guide-pillar-item {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ---------- RESPONSIVE BREAKPOINTS ---------- */

@media (max-width: 960px) {
  .scan-workspace {
    grid-template-columns: 1fr;
    gap: var(--sp-6);
  }

  .investigation {
    grid-template-columns: 1fr;
  }

  .finding-detail-pane {
    max-height: none;
  }

  .hero-metrics-grid {
    grid-template-columns: 1fr;
  }

  .rule-comparison-grid {
    grid-template-columns: 1fr;
  }

  .methodology-split {
    grid-template-columns: 1fr;
  }

  .methodology-stats-col {
    border-left: none;
    border-top: 1px solid var(--border-subtle);
    padding-left: 0;
    padding-top: var(--sp-4);
  }

  .guide-steps-grid {
    grid-template-columns: 1fr 1fr;
  }

  .guide-metrics-expl-grid {
    grid-template-columns: 1fr;
  }

  .guide-assumptions-grid {
    grid-template-columns: 1fr;
  }

  .guide-pillars-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .app-shell {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    height: auto;
    position: sticky;
    top: 0;
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--sp-4);
  }

  .sidebar-header {
    border-bottom: none;
    padding: var(--sp-3) 0;
  }

  .sidebar-nav {
    flex-direction: row;
    padding: var(--sp-2) 0;
    gap: var(--sp-3);
    flex: initial;
    overflow-x: auto;
  }

  .sidebar-group {
    flex-direction: row;
    align-items: center;
    gap: var(--sp-2);
  }

  .sidebar-group-title {
    display: none;
  }

  .nav-item {
    padding: 6px 8px;
    font-size: 12px;
  }

  .content {
    padding: var(--sp-6) var(--sp-4) var(--sp-12);
  }

  .severity-dist-grid {
    grid-template-columns: 1fr 1fr;
  }

  .analysis-grid {
    grid-template-columns: 1fr;
  }

  /* Mobile Drill-in navigation for Findings */
  .investigation.show-detail .finding-list-pane {
    display: none;
  }

  .investigation .finding-detail-pane {
    display: none;
  }

  .investigation.show-detail .finding-detail-pane {
    display: block;
  }

  .finding-detail-back {
    display: inline-flex;
  }

  .guide-section {
    flex-direction: column;
    gap: var(--sp-2);
  }

  .guide-steps-grid {
    grid-template-columns: 1fr;
  }

  .guide-field-row {
    grid-template-columns: 1fr;
    gap: var(--sp-1);
  }
}