/* ==========================================================================
   QASTCO FAQ Accordion
   ========================================================================== */

.faq {
  padding: var(--space-16) 0;
}

.faq__list {
  max-width: 800px;
  margin: 0 auto;
}

.faq__item {
  border-bottom: 1px solid var(--color-line);
}

.faq__item:first-child {
  border-top: 1px solid var(--color-line);
}

.faq__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-5) 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  gap: var(--space-4);
}

.faq__question {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-ink);
  line-height: var(--leading-snug);
}

.faq__trigger:hover .faq__question {
  color: var(--color-primary);
}

.faq__icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--color-muted);
  flex-shrink: 0;
  transition: transform var(--duration-normal) var(--ease-default),
              background var(--duration-normal) var(--ease-default);
}

.faq__trigger[aria-expanded="true"] .faq__icon {
  transform: rotate(45deg);
  background: var(--color-primary);
  color: var(--color-white);
}

.faq__answer {
  overflow: hidden;
  max-height: 0;
  padding: 0;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq__item--open .faq__answer {
  padding: 0 0 var(--space-5);
}

.faq__answer p {
  font-size: var(--text-base);
  color: var(--color-muted);
  line-height: var(--leading-relaxed);
  max-width: 68ch;
}

.faq__answer p + p {
  margin-top: var(--space-3);
}

/* ==========================================================================
   FAQ Page — Topic Tabs
   ========================================================================== */

.faq-tabs {
  background: var(--color-soft);
  border-bottom: 1px solid var(--color-line);
  padding: var(--space-4) 0;
  position: sticky;
  top: 0;
  z-index: 10;
}

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

.faq-tabs__btn {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  border-radius: 9999px;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-muted);
  background: var(--color-white);
  border: 1px solid var(--color-line);
  text-decoration: none;
  transition: background var(--duration-fast) var(--ease-default),
              color var(--duration-fast) var(--ease-default),
              border-color var(--duration-fast) var(--ease-default);
  white-space: nowrap;
}

.faq-tabs__btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.faq-tabs__btn--active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.faq-tabs__btn--active:hover {
  color: var(--color-white);
}

/* ==========================================================================
   FAQ Page — Topic Groups
   ========================================================================== */

.faq-groups {
  padding: var(--space-12) 0 0;
}

.faq-groups__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-2);
}

.faq-groups__topic-heading {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-ink);
  margin: 0;
}

.faq-groups__topic-link {
  font-size: var(--text-sm);
  color: var(--color-primary);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}

.faq-groups__topic-link:hover {
  text-decoration: underline;
}

/* Override faq section padding when nested in a group */
.faq-groups .faq {
  padding-top: var(--space-6);
  padding-bottom: var(--space-8);
}

@media (max-width: 640px) {
  .faq-tabs {
    position: static;
  }

  .faq-tabs__list {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: var(--space-1);
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .faq-tabs__list::-webkit-scrollbar {
    display: none;
  }

  .faq-groups__header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
  }
}