/* ============================================================
   UK Broker Support — Shared components
   Nav bar, button, accordion. Built from design-system reference
   components (Header.jsx, Button.jsx, Accordion.jsx, Eyebrow.jsx).
   ============================================================ */

/* --- Skip link (accessibility) --- */
.ukbs-skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--charcoal);
  color: var(--cream);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
}
.ukbs-skip-link:focus {
  left: var(--space-3);
  top: var(--space-3);
}

/* --- Header / nav --- */
.ukbs-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--cream);
  border-bottom: 1px solid transparent;
}
.ukbs-header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-5);
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}
.ukbs-logo-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}
.ukbs-logo-link img { width: 40px; height: 40px; }
.ukbs-logo-link:hover { text-decoration: none; }
.ukbs-wordmark {
  font-family: var(--font-display);
  font-weight: var(--weight-extrabold);
  font-size: var(--text-lg);
  letter-spacing: var(--tracking-tight);
  color: var(--charcoal);
}

.ukbs-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.ukbs-nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}
.ukbs-nav-links a {
  font-family: var(--font-body);
  font-weight: var(--weight-medium);
  font-size: var(--text-sm);
  color: var(--charcoal);
  text-decoration: none;
}
.ukbs-nav-links a:hover { color: var(--olive); text-decoration: none; }

.ukbs-nav-toggle {
  display: none;
  width: var(--hit-min);
  height: var(--hit-min);
  background: transparent;
  border: 1px solid var(--cream-line);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.ukbs-nav-toggle span,
.ukbs-nav-toggle::before,
.ukbs-nav-toggle::after {
  content: "";
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: var(--charcoal);
}

@media (max-width: 780px) {
  .ukbs-nav-toggle { display: block; }
  .ukbs-nav {
    position: absolute;
    top: 78px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--cream);
    border-bottom: 1px solid var(--cream-line);
    padding: var(--space-5);
    gap: var(--space-4);
    display: none;
  }
  .ukbs-nav.is-open { display: flex; }
  .ukbs-nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
  }
}

/* --- Button --- */
.ukbs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-weight: var(--weight-bold);
  font-size: var(--text-sm);
  line-height: 1;
  letter-spacing: 0.01em;
  padding: 13px var(--space-6);
  min-height: var(--hit-min);
  border-radius: var(--radius-pill);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  border: 2px solid transparent;
  transition: background var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.ukbs-btn:hover { text-decoration: none; }
.ukbs-btn:active { transform: scale(0.97); }
.ukbs-btn--primary {
  background: var(--cta);
  color: var(--cta-text);
}
.ukbs-btn--primary:hover { background: var(--cta-hover); }
.ukbs-btn--secondary {
  background: transparent;
  color: var(--charcoal);
  border-color: var(--charcoal);
}
.ukbs-btn--secondary:hover { background: rgba(42, 36, 30, 0.06); }

/* --- Accordion (button-based, single-open per group, animated) ---
   Open state uses the design system's Feature card spec: off-cream
   surface, cream-line border, 3px burnt-orange top rule (the keystone
   seam) — olive is reserved for the CTA button only and must never
   appear here. --- */
.ukbs-accordion {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.ukbs-accordion-item {
  border: 1px solid var(--cream-line);
  border-top: 3px solid transparent;
  border-radius: var(--radius-md);
  background: var(--surface-card);
  overflow: hidden;
  transition: border-color var(--dur-base) var(--ease-out);
}
.ukbs-accordion-item.is-open { border-top-color: var(--orange); }
.ukbs-accordion-heading { margin: 0; }
.ukbs-accordion-trigger {
  width: 100%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5);
  min-height: var(--hit-min);
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  font-size: var(--text-lg);
  letter-spacing: var(--tracking-tight);
  color: var(--charcoal);
  background: transparent;
  border: 0;
  text-align: left;
}
.ukbs-accordion-number {
  color: var(--orange);
  font-weight: var(--weight-black);
  margin-right: var(--space-2);
}
.ukbs-accordion-title-group { display: flex; flex-direction: column; gap: 2px; }
.ukbs-accordion-tagline {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: var(--weight-medium);
  font-size: var(--text-sm);
  color: var(--charcoal-80);
}
.ukbs-accordion-chevron {
  flex: none;
  width: 20px;
  height: 20px;
  background-color: var(--orange);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E") no-repeat center / contain;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E") no-repeat center / contain;
  transition: transform var(--dur-base) var(--ease-out);
}
.ukbs-accordion-item.is-open .ukbs-accordion-chevron { transform: rotate(180deg); }

.ukbs-accordion-panel {
  max-height: 0;
  overflow: hidden;
  visibility: hidden;
  transition: max-height var(--dur-base) var(--ease-out), visibility 0s linear var(--dur-base);
}
.ukbs-accordion-item.is-open .ukbs-accordion-panel {
  visibility: visible;
  transition: max-height var(--dur-base) var(--ease-out), visibility 0s linear 0s;
}
.ukbs-accordion-panel-inner { min-height: 0; }
.ukbs-accordion-body {
  padding: 0 var(--space-5) var(--space-5);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--charcoal-80);
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out);
}
.ukbs-accordion-item.is-open .ukbs-accordion-body { opacity: 1; }
.ukbs-accordion-body p { margin: 0 0 var(--space-3); }
.ukbs-accordion-body p:last-child { margin-bottom: 0; }
.ukbs-accordion-meta { font-size: var(--text-sm); }
.ukbs-accordion-meta a { font-weight: var(--weight-semibold); }

@media (prefers-reduced-motion: reduce) {
  .ukbs-accordion-item,
  .ukbs-accordion-chevron,
  .ukbs-accordion-panel,
  .ukbs-accordion-body {
    transition: none !important;
  }
}

/* Two-column "what it covers / what it prevents" body used by Services */
.ukbs-accordion-columns {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 640px) {
  .ukbs-accordion-columns { grid-template-columns: 1fr 1fr; }
}
.ukbs-accordion-col {
  padding-left: var(--space-4);
  border-left: var(--border-frame) solid var(--orange);
}
.ukbs-accordion-col--prevents { border-left-color: var(--charcoal-line); }
.ukbs-accordion-col h4 {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--charcoal-60);
  margin-bottom: var(--space-2);
}