/* ============================================================
   Additional Styles — FAQ, About, SEO Heading, Accordion
   Matches Infrared Finance design tokens from style.css
   ============================================================ */

/* ── SEO H1 heading ── */
.seo-heading {
  font-size: var(--text-3xl);
  line-height: var(--leading-tight);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--tracking-tight);
  color: var(--foreground);
  text-align: center;
  text-wrap: balance;
  margin-bottom: 2rem;
}

@media (min-width: 48rem) {
  .seo-heading {
    font-size: var(--text-4xl);
  }
}

@media (min-width: 64rem) {
  .seo-heading {
    font-size: var(--text-5xl);
  }
}

/* ── FAQ Section wrapper ── */
.faq-section {
  margin-top: calc(var(--spacing) * 20);
  margin-bottom: calc(var(--spacing) * 16);
  max-width: 100%;
  overflow-x: hidden;
  padding: 0 calc(var(--spacing) * 2.5);
}

@media (min-width: 40rem) {
  .faq-section {
    padding: 0 calc(var(--spacing) * 3);
  }
}

@media (min-width: 48rem) {
  .faq-section {
    padding: 0 calc(var(--spacing) * 4);
  }
}

.faq-section .faq-inner {
  max-width: 56rem;
  margin-inline: auto;
}

/* ── FAQ Accordion List ── */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing) * 2);
  list-style: none;
  padding: 0;
  margin: 0;
}

/* ── FAQ Accordion Item ── */
.faq-item {
  background-color: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  transition: box-shadow 0.2s var(--default-transition-timing-function);
}

.faq-item:hover {
  box-shadow: 0 1px 3px 0 #0000001a, 0 1px 2px -1px #0000001a;
}

/* ── FAQ Question button (h2 inside) ── */
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: calc(var(--spacing) * 3);
  padding: calc(var(--spacing) * 5) calc(var(--spacing) * 6);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  color: var(--foreground);
  font-family: inherit;
  font-size: var(--text-base);
  font-weight: var(--font-weight-medium);
  line-height: var(--leading-snug);
  outline: none;
  transition: background-color 0.15s var(--default-transition-timing-function);
  -webkit-tap-highlight-color: transparent;
}

.faq-question:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: -2px;
  border-radius: var(--radius-2xl);
}

.faq-question:hover {
  background-color: var(--accent);
}

.faq-question h2 {
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
  color: inherit;
  margin: 0;
  padding: 0;
}

/* ── Chevron icon ── */
.faq-chevron {
  flex-shrink: 0;
  width: calc(var(--spacing) * 5);
  height: calc(var(--spacing) * 5);
  color: var(--muted);
  transition: transform 0.3s var(--default-transition-timing-function),
              color 0.15s var(--default-transition-timing-function);
}

.faq-item.is-open .faq-chevron {
  transform: rotate(180deg);
  color: var(--foreground);
}

/* ── FAQ Answer panel ── */
.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s var(--default-transition-timing-function);
}

.faq-item.is-open .faq-answer {
  grid-template-rows: 1fr;
}

.faq-answer-inner {
  overflow: hidden;
}

.faq-answer-content {
  padding: 0 calc(var(--spacing) * 6) calc(var(--spacing) * 5);
  border-top: 1px solid var(--border);
}

.faq-answer-content h3 {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--muted);
  line-height: var(--leading-relaxed);
  margin: 0;
  padding-top: calc(var(--spacing) * 4);
}

/* ── FAQ footer links ── */
.faq-footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: calc(var(--spacing) * 4);
  flex-wrap: wrap;
  margin-top: calc(var(--spacing) * 10);
}

.faq-footer-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: calc(var(--spacing) * 11);
  min-width: calc(var(--spacing) * 11);
  padding-inline: calc(var(--spacing) * 4);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius);
  text-decoration: none;
  transition: background-color 0.15s var(--default-transition-timing-function),
              color 0.15s var(--default-transition-timing-function);
  cursor: pointer;
}

.faq-footer-link--primary {
  background-color: var(--primary);
  color: var(--primary-foreground);
}

.faq-footer-link--primary:hover {
  background-color: var(--primary);
  opacity: 0.85;
}

.faq-footer-link--secondary {
  background-color: var(--secondary);
  color: var(--secondary-foreground);
}

.faq-footer-link--secondary:hover {
  background-color: var(--secondary);
  opacity: 0.8;
}

/* ── Standalone FAQ / About page layout ── */
.page-wrapper {
  min-height: 100dvh;
  background-color: var(--background);
  color: var(--foreground);
  font-family: var(--default-font-family);
  display: flex;
  flex-direction: column;
}

.page-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: color-mix(in oklab, var(--background) 10%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.page-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: calc(var(--spacing) * 2);
  padding: calc(var(--spacing) * 2.5);
  max-width: 1400px;
  margin-inline: auto;
  width: 100%;
}

@media (min-width: 48rem) {
  .page-header-inner {
    padding: calc(var(--spacing) * 4);
  }
}

.page-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: var(--foreground);
  font-weight: var(--font-weight-bold);
  font-size: var(--text-lg);
  gap: calc(var(--spacing) * 2);
}

.page-logo img {
  height: 25px;
  width: auto;
}

.page-nav {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing) * 1);
}

.page-nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: calc(var(--spacing) * 11);
  min-width: calc(var(--spacing) * 11);
  padding-inline: calc(var(--spacing) * 4);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--foreground);
  text-decoration: none;
  border-radius: var(--radius);
  transition: background-color 0.15s var(--default-transition-timing-function);
  white-space: nowrap;
}

.page-nav-link:hover {
  background-color: color-mix(in oklab, var(--primary) 10%, transparent);
}

.page-nav-link:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}

.page-main {
  flex: 1;
  width: 100%;
}

.page-container {
  max-width: 56rem;
  margin-inline: auto;
  padding: calc(var(--spacing) * 8) calc(var(--spacing) * 2.5) calc(var(--spacing) * 16);
}

@media (min-width: 40rem) {
  .page-container {
    padding-inline: calc(var(--spacing) * 3);
  }
}

@media (min-width: 48rem) {
  .page-container {
    padding-inline: calc(var(--spacing) * 4);
    padding-top: calc(var(--spacing) * 12);
  }
}

/* ── Page hero heading area ── */
.page-hero {
  margin-bottom: calc(var(--spacing) * 12);
  text-align: center;
}

.page-hero-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--spacing) * 1) calc(var(--spacing) * 3);
  background-color: var(--secondary);
  color: var(--secondary-foreground);
  border-radius: 3.40282e+38px;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  margin-bottom: calc(var(--spacing) * 4);
}

.page-hero-title {
  font-size: var(--text-4xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--foreground);
  margin-bottom: calc(var(--spacing) * 4);
  text-wrap: balance;
}

@media (min-width: 48rem) {
  .page-hero-title {
    font-size: var(--text-5xl);
  }
}

.page-hero-description {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--muted);
  max-width: 40rem;
  margin-inline: auto;
  text-wrap: pretty;
}

/* ── Card ── */
.page-card {
  background-color: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-2xl);
  padding: calc(var(--spacing) * 6);
  color: var(--card-foreground);
}

@media (min-width: 48rem) {
  .page-card {
    padding: calc(var(--spacing) * 8);
  }
}

.page-card + .page-card {
  margin-top: calc(var(--spacing) * 4);
}

/* ── Content sections ── */
.content-section {
  margin-bottom: calc(var(--spacing) * 10);
}

.content-section-title {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--foreground);
  margin-bottom: calc(var(--spacing) * 4);
  line-height: var(--leading-tight);
}

@media (min-width: 48rem) {
  .content-section-title {
    font-size: var(--text-2xl);
  }
}

.content-section-text {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--muted);
  margin-bottom: calc(var(--spacing) * 3);
}

.content-section-text:last-child {
  margin-bottom: 0;
}

/* ── Divider ── */
.page-divider {
  height: 1px;
  background-color: var(--border);
  margin: calc(var(--spacing) * 10) 0;
  border: none;
}

/* ── Stats grid ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: calc(var(--spacing) * 4);
  margin-bottom: calc(var(--spacing) * 8);
}

@media (min-width: 48rem) {
  .stats-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.stat-card {
  background-color: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-2xl);
  padding: calc(var(--spacing) * 4) calc(var(--spacing) * 5);
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--muted);
  margin-bottom: calc(var(--spacing) * 1);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  font-weight: var(--font-weight-medium);
}

.stat-value {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--foreground);
  line-height: 1;
}

/* ── Feature list ── */
.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing) * 3);
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: calc(var(--spacing) * 3);
  font-size: var(--text-sm);
  color: var(--muted);
  line-height: var(--leading-relaxed);
}

.feature-icon {
  flex-shrink: 0;
  width: calc(var(--spacing) * 5);
  height: calc(var(--spacing) * 5);
  margin-top: 1px;
  color: var(--success);
}

/* ── Page footer CTA ── */
.page-footer-cta {
  margin-top: calc(var(--spacing) * 16);
  padding: calc(var(--spacing) * 8) calc(var(--spacing) * 6);
  background-color: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-2xl);
  text-align: center;
}

.page-footer-cta-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--foreground);
  margin-bottom: calc(var(--spacing) * 2);
  text-wrap: balance;
}

.page-footer-cta-description {
  font-size: var(--text-sm);
  color: var(--muted);
  margin-bottom: calc(var(--spacing) * 6);
  line-height: var(--leading-relaxed);
}

.page-footer-cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: calc(var(--spacing) * 3);
}

/* ── Shared button styles ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: calc(var(--spacing) * 1);
  height: calc(var(--spacing) * 11);
  min-width: calc(var(--spacing) * 11);
  padding-inline: calc(var(--spacing) * 4);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: background-color 0.15s var(--default-transition-timing-function),
              opacity 0.15s var(--default-transition-timing-function);
  white-space: nowrap;
  outline: none;
}

.btn:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--primary-foreground);
}

.btn-primary:hover {
  opacity: 0.82;
}

.btn-secondary {
  background-color: var(--secondary);
  color: var(--secondary-foreground);
}

.btn-secondary:hover {
  opacity: 0.8;
}

/* ── Page footer ── */
.page-footer {
  margin-top: calc(var(--spacing) * 20);
  border-top: 1px solid var(--border);
  padding: calc(var(--spacing) * 8) calc(var(--spacing) * 2.5);
}

@media (min-width: 48rem) {
  .page-footer {
    padding: calc(var(--spacing) * 8) calc(var(--spacing) * 4);
  }
}

.page-footer-inner {
  max-width: 1400px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: calc(var(--spacing) * 4);
}

.page-footer-copy {
  font-size: var(--text-sm);
  color: var(--muted);
}

.page-footer-nav {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing) * 4);
  flex-wrap: wrap;
}

.page-footer-nav a {
  font-size: var(--text-sm);
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s var(--default-transition-timing-function);
}

.page-footer-nav a:hover {
  color: var(--foreground);
  text-decoration: underline;
  text-decoration-thickness: 0.5px;
  text-underline-offset: 1px;
}

/* ── Breadcrumb ── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing) * 1.5);
  font-size: var(--text-sm);
  color: var(--muted);
  margin-bottom: calc(var(--spacing) * 8);
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s var(--default-transition-timing-function);
}

.breadcrumb a:hover {
  color: var(--foreground);
  text-decoration: underline;
  text-decoration-thickness: 0.5px;
  text-underline-offset: 1px;
}

.breadcrumb-separator {
  color: var(--border);
  flex-shrink: 0;
}

.breadcrumb-current {
  color: var(--foreground);
  font-weight: var(--font-weight-medium);
}

/* ── About page team / mission grid ── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--spacing) * 4);
  margin-bottom: calc(var(--spacing) * 8);
}

@media (min-width: 48rem) {
  .about-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.about-card {
  background-color: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-2xl);
  padding: calc(var(--spacing) * 6);
}

.about-card-icon {
  width: calc(var(--spacing) * 10);
  height: calc(var(--spacing) * 10);
  background-color: var(--secondary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: calc(var(--spacing) * 4);
  color: var(--secondary-foreground);
}

.about-card-icon svg {
  width: calc(var(--spacing) * 5);
  height: calc(var(--spacing) * 5);
}

.about-card-title {
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  color: var(--foreground);
  margin-bottom: calc(var(--spacing) * 2);
}

.about-card-text {
  font-size: var(--text-sm);
  color: var(--muted);
  line-height: var(--leading-relaxed);
}

/* ── Accordion open/close transition fallback for browsers
   that don't support grid-template-rows animation ── */
@supports not (grid-template-rows: 0fr) {
  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s var(--default-transition-timing-function);
    display: block;
  }
  .faq-item.is-open .faq-answer {
    max-height: 600px;
  }
}

/* ── Dark mode overrides ── */
.dark .faq-item,
[data-theme=dark] .faq-item {
  background-color: var(--card);
  border-color: var(--card-border);
}

.dark .faq-question:hover,
[data-theme=dark] .faq-question:hover {
  background-color: var(--accent);
}

.dark .stat-card,
[data-theme=dark] .stat-card,
.dark .about-card,
[data-theme=dark] .about-card,
.dark .page-footer-cta,
[data-theme=dark] .page-footer-cta {
  background-color: var(--card);
  border-color: var(--card-border);
}

/* ── Utility: visually hidden but accessible ── */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border-width: 0;
}