/* ========== Inner-page sticky tabs ========== */

.page-tabs {
  position: sticky;
  top: var(--athena-header-height);
  z-index: 40;
  background: var(--card);
  background: color-mix(in srgb, var(--card) 80%, transparent);
  border-bottom: 1px solid var(--border);
  border-bottom-color: color-mix(in srgb, var(--border) 50%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

html.athena-dark .page-tabs {
  background: var(--c-ink);
  border-bottom-color: var(--bd-white-10);
}

body.admin-bar .page-tabs {
  top: calc(var(--athena-header-height) + 46px);
  background-color: var(--c-ink);
}

.page-tabs__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1rem;
}

.page-tabs__list {
  display: flex;
  align-items: stretch;
  gap: 0;
}

.page-tabs__btn {
  position: relative;
  display: inline-flex;
  flex: 1 1 50%;
  align-items: center;
  justify-content: center;
  min-width: 0;
  padding: 0.75rem 0.5rem;
  font-family: var(--font-heading);
  font-size: var(--fs-head-12);
  font-weight: var(--fw-bold);
  letter-spacing: 0.04em;
  line-height: var(--lh-head-12);
  text-align: center;
  color: var(--muted-foreground);
  transition: color 0.15s ease;
}

.page-tabs__label {
  display: block;
  max-width: 100%;
}

.page-tabs__btn:hover,
.page-tabs__btn:focus-visible {
  color: var(--athena-text);
}

.page-tabs__btn.is-active {
  color: var(--secondary);
}

.page-tabs__line {
  display: none;
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  background: var(--secondary);
}

.page-tabs__btn.is-active .page-tabs__line {
  display: block;
}

.page-panels {
  background: var(--athena-bg);
}

.page-panel {
  display: none;
  scroll-margin-top: calc(var(--athena-header-height) + 4.5rem);
}

.page-panel.is-active {
  display: block;
}

.page-panel[hidden] {
  display: none;
}

@media (min-width: 640px) {
  .page-tabs__btn {
    padding: 0.875rem 1.25rem;
    font-size: var(--fs-head-14);
    line-height: var(--lh-head-14);
  }
}

@media (min-width: 768px) {
  .page-tabs__btn {
    flex: 0 0 auto;
    justify-content: center;
    padding: 0.875rem 1.5rem;
    white-space: nowrap;
  }
}

@media (min-width: 783px) {
  body.admin-bar .page-tabs {
    top: calc(var(--athena-header-height) + 32px);
  }
}

@media (min-width: 1024px) {
  .page-tabs__inner {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

@media (min-width: 1400px) {
  .page-tabs__inner {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}