/* BC Post v2: route directories, traffic alerts, and incident details. */
.bc-traffic-system-page {
  color: var(--bc-color-text);
  background: var(--bc-color-page);
}

.bc-traffic-system-hero {
  padding-block: var(--bc-space-10);
  color: var(--bc-color-surface);
  background: var(--bc-color-brand-navy);
  border-bottom: 4px solid var(--bc-color-accent);
}

.bc-traffic-system-hero.is-compact {
  padding-block: var(--bc-space-8);
}

.bc-traffic-system-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(17rem, 22rem);
  gap: var(--bc-space-8);
  align-items: end;
}

.bc-traffic-system-hero .cn-section-kicker {
  color: color-mix(in srgb, var(--bc-color-surface) 74%, transparent);
}

.bc-traffic-system-hero h1 {
  max-width: 20ch;
  margin: var(--bc-space-3) 0 var(--bc-space-4);
  color: var(--bc-color-surface);
  font-family: var(--bc-font-serif);
  font-size: clamp(2.3rem, 5vw, var(--bc-text-5xl));
  font-weight: 600;
  line-height: 1.03;
  letter-spacing: -0.035em;
}

.bc-traffic-system-hero p {
  max-width: 66ch;
  margin: 0;
  color: color-mix(in srgb, var(--bc-color-surface) 78%, transparent);
  font-size: var(--bc-text-lg);
  line-height: 1.6;
}

.bc-traffic-quick-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--bc-space-3);
  margin-top: var(--bc-space-6);
}

.bc-traffic-quick-stats span {
  display: inline-flex;
  align-items: baseline;
  gap: var(--bc-space-2);
  min-height: 2.5rem;
  padding: var(--bc-space-2) var(--bc-space-3);
  color: color-mix(in srgb, var(--bc-color-surface) 78%, transparent);
  font-size: var(--bc-text-sm);
  border: 1px solid color-mix(in srgb, var(--bc-color-surface) 24%, transparent);
  border-radius: var(--bc-radius-pill);
}

.bc-traffic-quick-stats strong {
  color: var(--bc-color-surface);
  font-size: var(--bc-text-lg);
}

.bc-traffic-system-panel {
  padding: var(--bc-space-5);
  background: color-mix(in srgb, var(--bc-color-surface) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--bc-color-surface) 24%, transparent);
  border-radius: var(--bc-radius-md);
}

.bc-traffic-system-panel h2 {
  margin: 0 0 var(--bc-space-3);
  color: var(--bc-color-surface);
  font-family: var(--bc-font-serif);
  font-size: var(--bc-text-xl);
  font-weight: 600;
}

.bc-traffic-route-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--bc-space-2);
}

.bc-traffic-route-list a,
.bc-traffic-route-badge,
.bc-traffic-city-badge {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: var(--bc-space-1) var(--bc-space-3);
  color: var(--bc-color-brand-ink);
  font-size: var(--bc-text-xs);
  font-weight: 750;
  text-decoration: none;
  background: var(--bc-color-surface);
  border: 1px solid var(--bc-color-border);
  border-radius: var(--bc-radius-pill);
}

.bc-traffic-route-list a:hover,
.bc-traffic-route-badge:hover,
.bc-traffic-city-badge:hover {
  color: var(--bc-color-surface);
  background: var(--bc-color-primary);
  border-color: var(--bc-color-primary);
}

.bc-traffic-system-hero .bc-traffic-panel-meta {
  margin: var(--bc-space-4) 0 0;
  color: color-mix(in srgb, var(--bc-color-surface) 68%, transparent);
  font-size: var(--bc-text-xs);
}

.bc-traffic-panel-link {
  display: inline-flex;
  align-items: center;
  gap: var(--bc-space-2);
  margin-top: var(--bc-space-4);
  color: var(--bc-color-surface);
  font-size: var(--bc-text-sm);
  font-weight: 700;
  text-decoration: none;
}

.bc-traffic-system-body {
  padding-block: var(--bc-space-10) var(--bc-space-16);
}

.bc-traffic-system-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(17rem, var(--bc-container-sidebar));
  gap: var(--bc-space-8);
  align-items: start;
}

.bc-traffic-system-layout > *,
.bc-traffic-sidebar {
  min-width: 0;
}

.bc-traffic-block + .bc-traffic-block {
  margin-top: var(--bc-space-10);
}

.bc-traffic-block-head {
  margin-bottom: var(--bc-space-5);
  padding-bottom: var(--bc-space-4);
  border-bottom: 2px solid var(--bc-color-brand-ink);
}

.bc-traffic-block-head h2,
.bc-traffic-side-card h2,
.bc-traffic-detail-card h2 {
  margin: var(--bc-space-1) 0 0;
  color: var(--bc-color-brand-ink);
  font-family: var(--bc-font-serif);
  font-size: clamp(var(--bc-text-xl), 2.5vw, var(--bc-text-3xl));
  font-weight: 600;
  line-height: 1.15;
}

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

.bc-traffic-list {
  display: grid;
  gap: var(--bc-space-4);
}

.bc-traffic-card,
.bc-traffic-detail-card,
.bc-traffic-side-card {
  padding: var(--bc-space-5);
  background: var(--bc-color-surface);
  border: 1px solid var(--bc-color-border);
  border-left: 4px solid var(--bc-color-primary);
  border-radius: var(--bc-radius-md);
}

.bc-traffic-card.is-critical,
.bc-traffic-card.is-major {
  border-left-color: var(--bc-color-error);
}

.bc-traffic-card.is-moderate {
  border-left-color: var(--bc-color-warning);
}

.bc-traffic-card.is-low {
  border-left-color: var(--bc-color-success);
}

.bc-traffic-card-top {
  display: flex;
  flex-wrap: wrap;
  gap: var(--bc-space-2);
  align-items: center;
}

.bc-traffic-severity {
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  padding: var(--bc-space-1) var(--bc-space-2);
  color: var(--bc-color-error);
  font-size: var(--bc-text-xs);
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  background: color-mix(in srgb, var(--bc-color-error) 8%, var(--bc-color-surface));
  border-radius: var(--bc-radius-pill);
}

.bc-traffic-card.is-low .bc-traffic-severity {
  color: var(--bc-color-success);
  background: color-mix(in srgb, var(--bc-color-success) 8%, var(--bc-color-surface));
}

.bc-traffic-card.is-moderate .bc-traffic-severity {
  color: var(--bc-color-warning);
  background: color-mix(in srgb, var(--bc-color-warning) 10%, var(--bc-color-surface));
}

.bc-traffic-route-badge,
.bc-traffic-city-badge {
  min-height: 1.75rem;
  color: var(--bc-color-text-muted);
  background: var(--bc-color-surface-muted);
}

.bc-traffic-card h3 {
  margin: var(--bc-space-3) 0;
  font-family: var(--bc-font-serif);
  font-size: var(--bc-text-xl);
  font-weight: 600;
  line-height: 1.25;
}

.bc-traffic-card h3 a {
  color: var(--bc-color-brand-ink);
  text-decoration: none;
}

.bc-traffic-card h3 a:hover {
  color: var(--bc-color-link-hover);
}

.bc-traffic-card > p,
.bc-traffic-side-card > p {
  margin: 0;
  color: var(--bc-color-text-muted);
  line-height: 1.6;
}

.bc-traffic-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--bc-space-2) var(--bc-space-4);
  margin-top: var(--bc-space-4);
  padding-top: var(--bc-space-3);
  color: var(--bc-color-text-muted);
  font-size: var(--bc-text-xs);
  border-top: 1px solid var(--bc-color-border);
}

.bc-traffic-card-meta > * + *::before {
  content: "\00b7";
  margin-right: var(--bc-space-2);
}

.bc-traffic-empty {
  grid-column: 1 / -1;
  display: grid;
  gap: var(--bc-space-2);
  padding: var(--bc-space-6);
  color: var(--bc-color-text-muted);
  background: var(--bc-color-surface);
  border: 1px dashed var(--bc-color-border);
  border-radius: var(--bc-radius-md);
}

.bc-traffic-empty strong {
  color: var(--bc-color-brand-ink);
  font-family: var(--bc-font-serif);
  font-size: var(--bc-text-xl);
  font-weight: 600;
}

.bc-traffic-empty small {
  color: var(--bc-color-text-muted);
}

.bc-traffic-sidebar {
  position: sticky;
  top: calc(var(--bc-header-height, 4.5rem) + var(--bc-space-4));
  display: grid;
  gap: var(--bc-space-5);
}

.bc-traffic-side-card {
  border-left-width: 1px;
}

.bc-traffic-side-card h2 {
  margin: 0 0 var(--bc-space-3);
  font-size: var(--bc-text-xl);
}

.bc-traffic-side-link {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--bc-space-3);
  min-height: 2.75rem;
  padding-block: var(--bc-space-3);
  color: var(--bc-color-brand-ink);
  font-size: var(--bc-text-sm);
  font-weight: 600;
  line-height: 1.35;
  text-decoration: none;
  border-top: 1px solid var(--bc-color-border);
}

.bc-traffic-side-link:first-of-type {
  border-top: 0;
}

.bc-traffic-side-link:hover {
  color: var(--bc-color-link-hover);
}

.bc-traffic-side-link strong {
  min-width: 1.75rem;
  padding: var(--bc-space-1) var(--bc-space-2);
  color: var(--bc-color-text-muted);
  font-size: var(--bc-text-xs);
  text-align: center;
  background: var(--bc-color-surface-muted);
  border-radius: var(--bc-radius-pill);
}

.bc-traffic-city-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--bc-space-2);
}

.bc-traffic-city-grid a {
  display: inline-flex;
  min-height: 2.5rem;
  align-items: center;
  padding: var(--bc-space-2) var(--bc-space-3);
  color: var(--bc-color-brand-ink);
  font-size: var(--bc-text-sm);
  font-weight: 650;
  text-decoration: none;
  background: var(--bc-color-surface-muted);
  border: 1px solid var(--bc-color-border);
  border-radius: var(--bc-radius-sm);
}

.bc-traffic-city-grid a:hover {
  color: var(--bc-color-surface);
  background: var(--bc-color-brand-ink);
  border-color: var(--bc-color-brand-ink);
}

.bc-traffic-route-directory {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--bc-space-4);
  margin-bottom: var(--bc-space-10);
}

.bc-traffic-route-directory a {
  display: grid;
  gap: var(--bc-space-1);
  min-height: 6rem;
  align-content: center;
  padding: var(--bc-space-4);
  color: var(--bc-color-brand-ink);
  text-decoration: none;
  background: var(--bc-color-surface);
  border: 1px solid var(--bc-color-border);
  border-radius: var(--bc-radius-md);
}

.bc-traffic-route-directory a:hover {
  border-color: var(--bc-color-primary);
}

.bc-traffic-route-directory strong {
  font-family: var(--bc-font-serif);
  font-size: var(--bc-text-lg);
}

.bc-traffic-route-directory span {
  color: var(--bc-color-text-muted);
  font-size: var(--bc-text-xs);
  text-transform: uppercase;
}

.bc-traffic-detail-card {
  border-left-color: var(--bc-color-accent);
}

.bc-traffic-detail-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: var(--bc-space-5) 0;
  overflow: hidden;
  background: var(--bc-color-border);
  border: 1px solid var(--bc-color-border);
  border-radius: var(--bc-radius-sm);
}

.bc-traffic-detail-list > div {
  display: grid;
  gap: var(--bc-space-1);
  padding: var(--bc-space-4);
  background: var(--bc-color-surface);
}

.bc-traffic-detail-list dt {
  color: var(--bc-color-text-muted);
  font-size: var(--bc-text-xs);
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.bc-traffic-detail-list dd {
  margin: 0;
  color: var(--bc-color-text);
  font-weight: 650;
}

.bc-traffic-detail-description {
  color: var(--bc-color-text-muted);
  font-size: var(--bc-text-base);
  line-height: 1.7;
}

.bc-traffic-source-link {
  display: inline-flex;
  align-items: center;
  gap: var(--bc-space-2);
  min-height: 2.75rem;
  margin-top: var(--bc-space-4);
  padding: var(--bc-space-2) var(--bc-space-4);
  color: var(--bc-color-brand-ink);
  font-size: var(--bc-text-sm);
  font-weight: 700;
  text-decoration: none;
  border: 1px solid var(--bc-color-brand-ink);
  border-radius: var(--bc-radius-sm);
}

.bc-traffic-source-link:hover {
  color: var(--bc-color-surface);
  background: var(--bc-color-brand-ink);
}

@media (max-width: 62rem) {
  .bc-traffic-system-hero-inner,
  .bc-traffic-system-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .bc-traffic-system-panel {
    max-width: none;
  }

  .bc-traffic-sidebar {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .bc-traffic-route-directory {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 47.99rem) {
  .bc-traffic-system-hero,
  .bc-traffic-system-hero.is-compact {
    padding-block: var(--bc-space-8);
  }

  .bc-traffic-system-hero h1 {
    font-size: clamp(2rem, 11vw, 3.2rem);
  }

  .bc-traffic-system-hero p {
    font-size: var(--bc-text-base);
  }

  .bc-traffic-quick-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .bc-traffic-system-body {
    padding-block: var(--bc-space-8) var(--bc-space-10);
  }

  .bc-traffic-alert-grid,
  .bc-traffic-sidebar,
  .bc-traffic-route-directory,
  .bc-traffic-detail-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .bc-traffic-card,
  .bc-traffic-detail-card,
  .bc-traffic-side-card {
    padding: var(--bc-space-4);
  }
}

@media (max-width: 24rem) {
  .bc-traffic-quick-stats,
  .bc-traffic-city-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}