:root {
  color-scheme: light;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "Cascadia Code", "Source Code Pro", Menlo, Consolas, monospace;

  /* Brand and Neutral Palette */
  --color-primary-950: #0a101d;
  --color-primary-900: #0f172a;
  --color-primary-800: #1e293b;
  --color-primary-700: #334155;
  --color-primary-600: #475569;
  --color-primary-500: #64748b;
  --color-primary-300: #cbd5e1;
  --color-primary-200: #e2e8f0;
  --color-primary-100: #f1f5f9;
  --color-primary-50:  #f8fafc;

  --color-brand-700: #0369a1;
  --color-brand-600: #0284c7;
  --color-brand-500: #0ea5e9;
  --color-brand-100: #e0f2fe;
  --color-brand-50:  #f0f9ff;

  /* Surfaces & Borders */
  --color-bg-app: #f4f6fa;
  --color-surface: #ffffff;
  --color-surface-subtle: #f8fafc;
  --color-surface-inset: #f1f5f9;
  --color-border: #cbd5e1;
  --color-border-subtle: #e2e8f0;

  /* Text Colors */
  --color-text-main: #0f172a;
  --color-text-muted: #334155;
  --color-text-subtle: #64748b;
  --color-text-inverse: #ffffff;

  /* Accessible Status & Severity Palette (WCAG 2.2 AA compliant >= 4.5:1 text contrast) */
  --color-success-800: #14532d;
  --color-success-700: #15803d;
  --color-success-600: #16a34a;
  --color-success-100: #dcfce7;
  --color-success-50:  #f0fdf4;
  --color-success-border: #86efac;

  --color-danger-800: #7f1d1d;
  --color-danger-700: #991b1b;
  --color-danger-600: #b91c1c;
  --color-danger-100: #fee2e2;
  --color-danger-50:  #fef2f2;
  --color-danger-border: #fca5a5;

  --color-warning-900: #7c2d12;
  --color-warning-800: #9a3412;
  --color-warning-700: #c2410c;
  --color-warning-100: #ffedd5;
  --color-warning-50:  #fff7ed;
  --color-warning-border: #fdba74;

  --color-info-800: #1e3a8a;
  --color-info-700: #1d4ed8;
  --color-info-600: #2563eb;
  --color-info-100: #dbeafe;
  --color-info-50:  #eff6ff;
  --color-info-border: #93c5fd;

  /* Focus Indicator (WCAG 2.2 compliant: >= 3:1 against background & surface) */
  --focus-outline-color: #0284c7;
  --focus-ring: 0 0 0 3px rgba(2, 132, 199, 0.45);

  /* Spacing Tokens */
  --space-0-5: 2px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  /* Border Radii */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Elevation / Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.08), 0 1px 2px -1px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.08);
  --shadow-dialog: 0 20px 25px -5px rgba(15, 23, 42, 0.2), 0 8px 10px -6px rgba(15, 23, 42, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

/* -------------------------------------------------------------
   RESET & ACCESSIBILITY BASE
   ------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background-color: var(--color-bg-app);
  color: var(--color-text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Skip link for keyboard users */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  background: var(--color-brand-700);
  color: #ffffff;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  z-index: 10000;
  font-weight: 600;
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
  outline: 3px solid #ffffff;
}

/* Accessible focus visible */
:focus-visible {
  outline: 2px solid var(--focus-outline-color);
  outline-offset: 2px;
  box-shadow: var(--focus-ring);
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* -------------------------------------------------------------
   TYPOGRAPHY & UTILITIES
   ------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-primary-900);
  font-weight: 700;
  line-height: 1.25;
  margin-top: 0;
}

h1 { font-size: 1.5rem; }
h2 { font-size: 1.25rem; margin-bottom: var(--space-3); }
h3 { font-size: 1.1rem; margin-bottom: var(--space-2); }

p { margin: 0 0 var(--space-3); }

.lead {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin: 0;
}

.muted {
  color: var(--color-text-subtle);
  font-size: 0.875rem;
}

.empty {
  color: var(--color-text-subtle);
  font-style: italic;
  padding: var(--space-4);
  text-align: center;
  background-color: var(--color-surface-subtle);
  border-radius: var(--radius-md);
  border: 1px dashed var(--color-border);
}

.hidden {
  display: none !important;
}

.role-hidden {
  display: none !important;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* -------------------------------------------------------------
   APP SHELL & HEADER
   ------------------------------------------------------------- */
.app-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-xs);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.brand-section {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.brand-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, #0284c7, #0f172a);
  color: #ffffff;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.brand-text h1 {
  font-size: 1.125rem;
  margin: 0;
  letter-spacing: -0.01em;
  color: var(--color-primary-950);
}

.brand-text .lead {
  font-size: 0.775rem;
  color: var(--color-text-subtle);
  line-height: 1.2;
}

/* Navigation Tabs */
.app-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  min-height: 40px;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-link:hover {
  background-color: var(--color-primary-100);
  color: var(--color-primary-950);
}

.nav-link.active,
.nav-link[aria-current="page"] {
  background-color: var(--color-brand-100);
  color: var(--color-brand-700);
  font-weight: 600;
}

.nav-badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  background-color: var(--color-primary-200);
  color: var(--color-primary-800);
}

.nav-link.active .nav-badge {
  background-color: var(--color-brand-600);
  color: #ffffff;
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2);
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
}

/* Header Session Box */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

#session-box {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* -------------------------------------------------------------
   MAIN CONTAINER & NOTIFICATIONS
   ------------------------------------------------------------- */
main {
  flex: 1;
  max-width: 1440px;
  width: calc(100% - var(--space-6));
  margin: var(--space-4) auto var(--space-10);
}

.notifications-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.toast {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid transparent;
}

.toast-success {
  background-color: var(--color-success-50);
  color: var(--color-success-800);
  border-left-color: var(--color-success-600);
  border-right: 1px solid var(--color-success-border);
  border-top: 1px solid var(--color-success-border);
  border-bottom: 1px solid var(--color-success-border);
}

.toast-error,
.error {
  background-color: var(--color-danger-50);
  color: var(--color-danger-800);
  border-left-color: var(--color-danger-600);
  border-right: 1px solid var(--color-danger-border);
  border-top: 1px solid var(--color-danger-border);
  border-bottom: 1px solid var(--color-danger-border);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: var(--space-3);
}

.toast-info {
  background-color: var(--color-info-50);
  color: var(--color-info-800);
  border-left-color: var(--color-info-600);
  border-right: 1px solid var(--color-info-border);
  border-top: 1px solid var(--color-info-border);
  border-bottom: 1px solid var(--color-info-border);
}

/* -------------------------------------------------------------
   PANELS & CARDS
   ------------------------------------------------------------- */
.panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
  box-shadow: var(--shadow-sm);
}

.panel-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.panel-heading h2 {
  margin: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
  margin-bottom: var(--space-5);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}

/* Metric / Stat Cards */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.metric,
.stat-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  background-color: var(--color-surface-subtle);
  box-shadow: var(--shadow-xs);
}

.metric strong,
.stat-value {
  color: var(--color-primary-950);
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.2;
}

.metric span,
.stat-label {
  color: var(--color-text-subtle);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* -------------------------------------------------------------
   FORMS & INPUTS
   ------------------------------------------------------------- */
form {
  display: grid;
  gap: var(--space-3);
}

.form-inline {
  display: flex;
  align-items: flex-end;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  flex: 1;
  min-width: 200px;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.form-actions-end {
  display: flex;
  align-items: flex-end;
}

.checkbox-inline {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
}

.checkbox-inline input {
  width: auto;
  min-height: auto;
}

.form-help {
  font-size: 0.775rem;
  color: var(--color-text-subtle);
  margin-top: var(--space-0-5);
}

.scope-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.scope-form label {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

input,
select,
textarea {
  width: 100%;
  padding: 9px 12px;
  font-family: inherit;
  font-size: 0.9rem;
  color: var(--color-text-main);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  min-height: 40px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

textarea {
  min-height: 80px;
  resize: vertical;
}

input:hover,
select:hover,
textarea:hover {
  border-color: var(--color-primary-500);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-brand-600);
  outline: 2px solid var(--focus-outline-color);
  outline-offset: 1px;
}

input:disabled,
select:disabled,
textarea:disabled {
  background-color: var(--color-primary-100);
  color: var(--color-text-subtle);
  cursor: not-allowed;
}

/* -------------------------------------------------------------
   BUTTONS
   ------------------------------------------------------------- */
button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 8px 14px;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-brand-700);
  background-color: var(--color-brand-700);
  color: #ffffff;
  cursor: pointer;
  min-height: 40px;
  text-decoration: none;
  line-height: 1.2;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

button:hover,
.btn:hover {
  background-color: var(--color-brand-600);
  border-color: var(--color-brand-600);
}

button.secondary,
.btn.secondary {
  background-color: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-primary-800);
}

button.secondary:hover,
.btn.secondary:hover {
  background-color: var(--color-primary-100);
  border-color: var(--color-primary-500);
  color: var(--color-primary-950);
}

button.danger,
.btn.danger {
  background-color: var(--color-danger-700);
  border-color: var(--color-danger-700);
  color: #ffffff;
}

button.danger:hover,
.btn.danger:hover {
  background-color: var(--color-danger-600);
  border-color: var(--color-danger-600);
}

button.ghost,
.btn.ghost {
  background: transparent;
  border-color: transparent;
  color: var(--color-primary-700);
}

button.ghost:hover,
.btn.ghost:hover {
  background-color: var(--color-primary-100);
  color: var(--color-primary-950);
}

button.btn-sm,
.btn-sm {
  padding: 5px 9px;
  font-size: 0.8rem;
  min-height: 32px;
}

button:disabled,
.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
}

.stack-list {
  display: grid;
  gap: var(--space-3);
  margin: var(--space-4) 0;
}

.list-item {
  align-items: center;
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  gap: var(--space-3);
  justify-content: space-between;
  padding: var(--space-3);
}

.actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

/* -------------------------------------------------------------
   BADGES & STATUS PALETTE
   (Textual + visual shape + compliant WCAG AA contrast)
   ------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.775rem;
  font-weight: 600;
  line-height: 1.4;
  background-color: var(--color-primary-100);
  color: var(--color-primary-800);
  border: 1px solid var(--color-border-subtle);
  white-space: nowrap;
}

/* Severities */
.severity-high,
.badge-severity-high {
  background-color: var(--color-danger-50);
  color: var(--color-danger-800);
  border: 1px solid var(--color-danger-border);
  font-weight: 700;
}

.severity-medium,
.badge-severity-medium {
  background-color: var(--color-warning-50);
  color: var(--color-warning-900);
  border: 1px solid var(--color-warning-border);
  font-weight: 700;
}

.severity-low,
.badge-severity-low {
  background-color: var(--color-info-50);
  color: var(--color-info-800);
  border: 1px solid var(--color-info-border);
  font-weight: 700;
}

/* Statuses */
.status-completed,
.success,
.badge-status-completed {
  background-color: var(--color-success-50);
  color: var(--color-success-800);
  border: 1px solid var(--color-success-border);
  font-weight: 700;
}

.status-running,
.badge-status-running {
  background-color: var(--color-brand-50);
  color: var(--color-brand-700);
  border: 1px solid var(--color-brand-100);
  font-weight: 700;
}

.status-queued,
.badge-status-queued {
  background-color: var(--color-primary-100);
  color: var(--color-primary-800);
  border: 1px solid var(--color-border);
  font-weight: 600;
}

.status-failed,
.status-cancelled,
.badge-status-failed,
.badge-status-cancelled {
  background-color: var(--color-danger-50);
  color: var(--color-danger-800);
  border: 1px solid var(--color-danger-border);
  font-weight: 700;
}

.alert-active {
  background-color: var(--color-danger-100);
  color: var(--color-danger-800);
  border: 1px solid var(--color-danger-border);
  font-weight: 700;
}

/* Review Statuses */
.badge-review-open {
  background-color: var(--color-primary-100);
  color: var(--color-primary-800);
  border: 1px solid var(--color-border);
}

.badge-review-confirmed {
  background-color: var(--color-danger-50);
  color: var(--color-danger-800);
  border: 1px solid var(--color-danger-border);
}

.badge-review-false_positive {
  background-color: var(--color-primary-50);
  color: var(--color-text-subtle);
  border: 1px dashed var(--color-border);
}

.badge-review-accepted_risk {
  background-color: var(--color-warning-50);
  color: var(--color-warning-900);
  border: 1px solid var(--color-warning-border);
}

.badge-review-resolved {
  background-color: var(--color-success-50);
  color: var(--color-success-800);
  border: 1px solid var(--color-success-border);
}

/* -------------------------------------------------------------
   TABLES & RESPONSIVE DATA DISPLAY
   ------------------------------------------------------------- */
.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
}

thead {
  background-color: var(--color-surface-subtle);
  border-bottom: 2px solid var(--color-border-subtle);
}

th {
  padding: 10px 12px;
  font-weight: 700;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

td {
  padding: 12px;
  border-bottom: 1px solid var(--color-border-subtle);
  vertical-align: middle;
  color: var(--color-text-main);
}

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

tbody tr:hover {
  background-color: rgba(241, 245, 249, 0.6);
}

/* Code, SHA, IP values */
code {
  font-family: var(--font-mono);
  font-size: 0.825rem;
  background-color: var(--color-surface-inset);
  color: var(--color-primary-900);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--color-border-subtle);
  overflow-wrap: anywhere;
}

pre {
  font-family: var(--font-mono);
  font-size: 0.825rem;
  background-color: var(--color-primary-950);
  color: #e2e8f0;
  padding: var(--space-4);
  border-radius: var(--radius-md);
  overflow-x: auto;
  line-height: 1.45;
}

pre code {
  background: transparent;
  color: inherit;
  border: none;
  padding: 0;
}

/* Filter / Search Bar */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.search-box {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
  max-width: 380px;
}

/* -------------------------------------------------------------
   ACCESSIBLE MODAL DIALOGS
   ------------------------------------------------------------- */
dialog {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 0;
  background: var(--color-surface);
  box-shadow: var(--shadow-dialog);
  max-width: min(640px, calc(100vw - 32px));
  width: 100%;
  color: var(--color-text-main);
}

dialog::backdrop {
  background-color: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(2px);
}

.dialog-inner {
  display: flex;
  flex-direction: column;
}

.dialog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface-subtle);
  border-top-left-radius: var(--radius-xl);
  border-top-right-radius: var(--radius-xl);
}

.dialog-header h3 {
  margin: 0;
  font-size: 1.15rem;
  color: var(--color-primary-950);
}

.dialog-body {
  padding: var(--space-5);
  max-height: calc(85vh - 140px);
  overflow-y: auto;
}

.dialog-footer {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface-subtle);
  border-bottom-left-radius: var(--radius-xl);
  border-bottom-right-radius: var(--radius-xl);
}

.dialog-danger .dialog-header {
  border-top: 4px solid var(--color-danger-600);
}

/* Close dialog icon button */
.btn-close {
  background: transparent;
  border: none;
  font-size: 1.25rem;
  line-height: 1;
  color: var(--color-text-subtle);
  cursor: pointer;
  padding: var(--space-1);
  min-height: 32px;
  min-width: 32px;
  border-radius: var(--radius-sm);
}

.btn-close:hover {
  background-color: var(--color-primary-100);
  color: var(--color-primary-950);
}

/* Timeline for Finding Review History */
.timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  position: relative;
  margin: var(--space-2) 0;
}

.timeline-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
  border-left: 3px solid var(--color-brand-600);
  background-color: var(--color-surface-subtle);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.timeline-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--color-text-subtle);
}

.timeline-content {
  font-size: 0.875rem;
  color: var(--color-text-main);
}

/* Evidence Cards */
.evidence-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  background-color: var(--color-surface);
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-xs);
}

.evidence-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border-subtle);
}

.evidence-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.evidence-meta-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-0-5);
  font-size: 0.825rem;
}

.evidence-meta-label {
  color: var(--color-text-subtle);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.725rem;
}

/* -------------------------------------------------------------
   LOGIN VIEW
   ------------------------------------------------------------- */
#login-panel {
  max-width: 440px;
  margin: var(--space-12) auto;
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

#login-panel h2 {
  font-size: 1.4rem;
  text-align: center;
  margin-bottom: var(--space-2);
}

#login-panel .lead {
  text-align: center;
  margin-bottom: var(--space-6);
}

#login-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* -------------------------------------------------------------
   RESPONSIVE BREAKPOINTS (~1440, ~1024, ~768, ~390px)
   ------------------------------------------------------------- */

/* Tablet & Mobile (< 1024px) */
@media (max-width: 1024px) {
  .metric-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* Mobile & Small Tablet (< 768px) */
@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .mobile-nav-toggle {
    display: inline-flex;
  }

  .app-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    padding-top: var(--space-3);
    border-top: 1px solid var(--color-border-subtle);
  }

  .app-nav.open {
    display: flex;
  }

  .nav-link {
    width: 100%;
    justify-content: space-between;
  }

  .grid,
  .form-row,
  .scope-form {
    grid-template-columns: 1fr;
  }

  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .header-actions {
    width: 100%;
    justify-content: space-between;
  }

  /* Responsive card-like table mode */
  .table-cards thead {
    display: none;
  }

  .table-cards tbody,
  .table-cards tr,
  .table-cards td {
    display: block;
    width: 100%;
  }

  .table-cards tr {
    margin-bottom: var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-2);
    background-color: var(--color-surface);
  }

  .table-cards td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-2);
    border-bottom: 1px solid var(--color-border-subtle);
    text-align: right;
  }

  .table-cards td:last-child {
    border-bottom: none;
  }

  .table-cards td::before {
    content: attr(data-label);
    font-weight: 700;
    font-size: 0.775rem;
    color: var(--color-text-subtle);
    text-transform: uppercase;
    text-align: left;
    margin-right: var(--space-3);
  }
}

/* Small Smartphone (~390px) */
@media (max-width: 480px) {
  main {
    width: calc(100% - var(--space-4));
    margin: var(--space-3) auto var(--space-6);
  }

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

  #login-panel {
    padding: var(--space-5);
    margin: var(--space-6) auto;
  }

  .brand-text .lead {
    display: none;
  }

  button,
  .btn {
    width: 100%;
  }

  .actions {
    flex-direction: column;
    align-items: stretch;
  }
}