/* FAQ page: category sections with accordion (details/summary).
   Progressive: native details/summary works without JS.
   JS adds single-open accordion behavior and smooth animation. */

.faq {
  padding-top: var(--space-8);
  padding-bottom: var(--space-16);
}

.faq__header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.faq__title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-3);
}

.faq__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
}

/* --- Search filter --- */
.faq__search {
  max-width: 480px;
  margin: 0 auto var(--space-10);
  position: relative;
}

.faq__search-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  pointer-events: none;
}

.faq__search-input {
  width: 100%;
  padding: var(--space-3) var(--space-4) var(--space-3) var(--space-10);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq__search-input::placeholder {
  color: var(--color-text-muted);
}

.faq__search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-surface);
}

/* --- Category sections --- */
.faq__category {
  margin-bottom: var(--space-10);
}

.faq__category-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-2);
  border-bottom: 2px solid var(--color-primary-surface);
}

/* --- Accordion items --- */
.faq__item {
  border-bottom: 1px solid var(--color-border-light);
}

.faq__item[open] {
  padding-bottom: var(--space-4);
}

.faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  cursor: pointer;
  list-style: none;
  min-height: 44px;
  transition: color var(--transition-fast);
}

/* Remove default marker */
.faq__question::-webkit-details-marker {
  display: none;
}

.faq__question::marker {
  content: '';
}

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

.faq__question:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Chevron icon */
.faq__chevron {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.faq__item[open] .faq__chevron {
  transform: rotate(180deg);
}

/* Answer content */
.faq__answer {
  padding: 0 0 var(--space-2) 0;
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

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

.faq__answer p:last-child {
  margin-bottom: 0;
}

.faq__answer ul,
.faq__answer ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-3);
}

.faq__answer ul {
  list-style: disc;
}

.faq__answer ol {
  list-style: decimal;
}

.faq__answer li {
  padding: var(--space-1) 0;
  line-height: var(--line-height-relaxed);
}

.faq__answer strong {
  color: var(--color-text-primary);
}

.faq__answer a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* --- No results message (from JS search) --- */
.faq__no-results {
  text-align: center;
  padding: var(--space-12) 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-lg);
  display: none;
}

.faq__no-results--visible {
  display: block;
}

/* --- Responsive --- */
@media (min-width: 640px) {
  .faq__title {
    font-size: var(--font-size-4xl);
  }
}