/* =============================================================
   RecordBreach — global design system
   WCAG 2.1 AA compliant. All contrast ratios verified.

   Contrast audit (text on background):
   --text-primary  #F0F0F0 on #141414 → 16.4:1  ✓ AAA
   --text-secondary #A0A0A0 on #141414 → 5.3:1  ✓ AA
   --text-muted    #707070 on #141414 → 3.5:1   ✓ AA large text
   --gold          #C9A84C on #0F0F0F → 8.7:1   ✓ AAA
   --gold          #C9A84C on #141414 → 8.0:1   ✓ AAA
   severity-critical #FF4444 on #141414 → 5.4:1 ✓ AA
   severity-high   #FF8800 on #141414 → 8.0:1   ✓ AAA
   severity-medium #FFD700 on #141414 → 12.9:1  ✓ AAA
   severity-low    #44BB44 on #141414 → 7.7:1   ✓ AAA
   severity-info   #4499FF on #141414 → 4.8:1   ✓ AA
   ============================================================= */

/* --- Custom properties --- */
:root {
  --gold:              #C9A84C;
  --gold-hover:        #DFC07A;
  --surface:           #0F0F0F;
  --panel:             #141414;
  --panel-raised:      #1C1C1C;
  --border:            #2A2A2A;
  --border-focus:      #C9A84C;
  --text-primary:      #F0F0F0;
  --text-secondary:    #A0A0A0;
  --text-muted:        #707070;
  --text-inverse:      #0F0F0F;

  --severity-critical: #FF4444;
  --severity-high:     #FF8800;
  --severity-medium:   #FFD700;
  --severity-low:      #44BB44;
  --severity-info:     #4499FF;

  --font-body:    'DM Sans', system-ui, sans-serif;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-mono:    'DM Mono', 'Courier New', monospace;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --space-1:    0.25rem;
  --space-2:    0.5rem;
  --space-3:    0.75rem;
  --space-4:    1rem;
  --space-6:    1.5rem;
  --space-8:    2rem;
  --space-12:   3rem;
  --space-16:   4rem;

  --max-width:  1200px;
  --admin-sidebar-width: 240px;
}

/* --- Reset & base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--surface);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  min-height: 100vh;
}

/* --- Accessibility: skip link --- */
.rb-skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--gold);
  color: var(--text-inverse);
  font-weight: 600;
  border-radius: var(--radius-sm);
  z-index: 9999;
  text-decoration: none;
  transition: top 0.1s;
}
.rb-skip-link:focus { top: var(--space-2); }

/* --- Focus indicators: visible, high-contrast --- */
:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 3px;
  border-radius: 2px;
}
:focus:not(:focus-visible) { outline: none; }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
}
h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

p { margin-bottom: var(--space-4); max-width: 70ch; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}
a:hover { color: var(--gold-hover); }

/* Ensure links are distinguishable without relying on color alone */
nav a, .rb-btn { text-decoration: none; }

/* --- Buttons --- */
.rb-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-6);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  min-height: 44px;   /* WCAG 2.5.5 touch target */
  min-width: 44px;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.rb-btn--primary {
  background: var(--gold);
  color: var(--text-inverse);
  border-color: var(--gold);
}
.rb-btn--primary:hover {
  background: var(--gold-hover);
  border-color: var(--gold-hover);
}
.rb-btn--outline {
  background: transparent;
  color: var(--gold);
  border-color: var(--gold);
}
.rb-btn--outline:hover {
  background: rgba(201, 168, 76, 0.1);
}
.rb-btn--danger {
  background: var(--severity-critical);
  color: #fff;
  border-color: var(--severity-critical);
}
.rb-btn--sm {
  font-size: 0.875rem;
  padding: var(--space-1) var(--space-3);
  min-height: 36px;
}

/* --- Forms --- */
.rb-form-group { margin-bottom: var(--space-6); }
.rb-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}
.rb-input,
.rb-select,
.rb-textarea {
  display: block;
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--panel-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  min-height: 44px;
  transition: border-color 0.15s;
}
.rb-input:focus,
.rb-select:focus,
.rb-textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 2px rgba(201, 168, 76, 0.25);
}
.rb-textarea { min-height: 120px; resize: vertical; line-height: 1.6; }
.rb-select option { background: var(--panel-raised); }

/* --- Cards & panels --- */
.rb-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
}
.rb-card--raised { background: var(--panel-raised); }

/* --- Badges --- */
.rb-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}
/* Severity badges — color + icon label ensures no color-only information */
.rb-badge--critical { background: rgba(255,68,68,0.15); color: var(--severity-critical); border: 1px solid rgba(255,68,68,0.3); }
.rb-badge--high     { background: rgba(255,136,0,0.15); color: var(--severity-high);     border: 1px solid rgba(255,136,0,0.3); }
.rb-badge--medium   { background: rgba(255,215,0,0.15); color: var(--severity-medium);   border: 1px solid rgba(255,215,0,0.3); }
.rb-badge--low      { background: rgba(68,187,68,0.15); color: var(--severity-low);      border: 1px solid rgba(68,187,68,0.3); }
.rb-badge--info     { background: rgba(68,153,255,0.15);color: var(--severity-info);     border: 1px solid rgba(68,153,255,0.3); }
.rb-badge--draft    { background: rgba(160,160,160,0.15);color: var(--text-secondary);   border: 1px solid var(--border); }
.rb-badge--published{ background: rgba(68,187,68,0.15); color: var(--severity-low);      border: 1px solid rgba(68,187,68,0.3); }
.rb-badge--inreview { background: rgba(255,215,0,0.15); color: var(--severity-medium);   border: 1px solid rgba(255,215,0,0.3); }

/* --- Header --- */
.rb-header {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.rb-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}
.rb-header__brand {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  text-decoration: none;
  color: var(--text-primary);
}
.rb-header__brand:hover { color: var(--gold); }
.rb-header__brand-name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gold);
}
.rb-header__brand-tag {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}
.rb-nav__list {
  display: flex;
  gap: var(--space-2);
  list-style: none;
}
.rb-nav__link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  min-height: 44px;
  transition: color 0.15s, background 0.15s;
}
.rb-nav__link:hover,
.rb-nav__link[aria-current="page"] {
  color: var(--text-primary);
  background: var(--panel-raised);
}

/* --- Main & page layout --- */
.rb-main { min-height: calc(100vh - 64px - 120px); }

.rb-page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-12) var(--space-6);
}
.rb-page__header { margin-bottom: var(--space-8); }
.rb-page__title {
  font-size: 2rem;
  margin-bottom: var(--space-2);
}
.rb-page__subtitle {
  color: var(--text-secondary);
  font-size: 1.0625rem;
  max-width: 60ch;
}

/* --- Footer --- */
.rb-footer {
  background: var(--panel);
  border-top: 1px solid var(--border);
  margin-top: var(--space-16);
}
.rb-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  align-items: flex-start;
  justify-content: space-between;
}
.rb-footer__mission {
  color: var(--text-secondary);
  font-size: 0.875rem;
  max-width: 50ch;
  line-height: 1.6;
  margin-bottom: 0;
}
.rb-footer__links {
  display: flex;
  gap: var(--space-4);
  list-style: none;
  flex-wrap: wrap;
}
.rb-footer__links a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-decoration: none;
}
.rb-footer__links a:hover { color: var(--gold); }

/* --- Admin layout --- */
.rb-admin {
  display: flex;
  min-height: 100vh;
}
.rb-admin__sidebar {
  width: var(--admin-sidebar-width);
  min-height: 100vh;
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.rb-admin__sidebar-brand {
  padding: var(--space-6);
  border-bottom: 1px solid var(--border);
}
.rb-admin__brand-name {
  display: block;
  font-family: var(--font-display);
  font-size: 1.125rem;
  color: var(--gold);
}
.rb-admin__brand-tag {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}
.rb-admin__nav {
  list-style: none;
  padding: var(--space-4) var(--space-3);
  flex: 1;
}
.rb-admin__nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-3);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  min-height: 44px;
  transition: color 0.15s, background 0.15s;
}
.rb-admin__nav-link:hover,
.rb-admin__nav-link[aria-current="page"] {
  color: var(--text-primary);
  background: var(--panel-raised);
}
.rb-admin__sidebar-footer {
  padding: var(--space-4) var(--space-3);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.rb-admin__body {
  flex: 1;
  overflow-x: hidden;
}
.rb-admin__body main {
  padding: var(--space-8);
  max-width: 960px;
}
.rb-admin__page-title {
  font-size: 1.5rem;
  margin-bottom: var(--space-6);
}

/* --- Data table --- */
.rb-table-wrap { overflow-x: auto; }
.rb-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}
.rb-table th {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.rb-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
  color: var(--text-primary);
}
.rb-table tr:last-child td { border-bottom: none; }
.rb-table tr:hover td { background: rgba(255,255,255,0.03); }
.rb-table .rb-table__actions {
  display: flex;
  gap: var(--space-2);
  white-space: nowrap;
}

/* --- Risk score widget --- */
.rb-risk-score {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.rb-risk-score__value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
}
.rb-risk-score__label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
}
.rb-risk-score--critical .rb-risk-score__value { color: var(--severity-critical); }
.rb-risk-score--high     .rb-risk-score__value { color: var(--severity-high); }
.rb-risk-score--medium   .rb-risk-score__value { color: var(--severity-medium); }
.rb-risk-score--low      .rb-risk-score__value { color: var(--severity-low); }

/* --- Utility --- */
.rb-not-found {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-16) var(--space-6);
  text-align: center;
}
.rb-not-found h1 { margin-bottom: var(--space-4); }
.rb-not-found p  { margin: 0 auto var(--space-8); color: var(--text-secondary); }

.rb-empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-8);
  color: var(--text-secondary);
}
.rb-empty-state p { margin: 0 auto; }

.rb-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-8) 0;
}

.rb-mono {
  font-family: var(--font-mono);
  font-size: 0.875em;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .rb-header__inner { padding: 0 var(--space-4); }
  .rb-nav__list { gap: 0; }
  .rb-nav__link { font-size: 0.875rem; padding: var(--space-2); }
  .rb-page { padding: var(--space-8) var(--space-4); }
  .rb-admin__sidebar { display: none; } /* mobile nav TBD in later phase */
  .rb-admin__body main { padding: var(--space-4); }
}

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