/* Blora Design 2.0 - Tabs */

/* Before render(), light-DOM <blora-tab> children would all paint. */
blora-tabs > blora-tab:not([selected]) {
  display: none;
}

blora-tabs {
  display: block;
}

.blora-tabs {
  display: flex;
  flex-direction: column;
  min-width: 0;
  container-type: inline-size;
}

.blora-tabs__nav {
  display: flex;
  gap: var(--blora-space-1);
  min-width: 0;
  max-width: 100%;
  border-bottom: 1px solid var(--blora-color-border-subtle);
  position: relative;
  overflow: auto hidden;
  overscroll-behavior-inline: contain;
  scrollbar-width: none;
}

.blora-tabs__nav::-webkit-scrollbar {
  display: none;
}

.blora-tabs__indicator {
  position: absolute;
  inset-inline-start: 0;
  bottom: -1px;
  width: var(--blora-tab-w, 0);
  height: var(--blora-tabs-indicator-size);
  transform: translateX(var(--blora-tab-x, 0));
  background: var(--blora-color-action-primary-default);
  border-radius: var(--blora-radius-full);
  pointer-events: none;
  transition:
    width var(--blora-duration-base) var(--blora-easing-standard),
    transform var(--blora-duration-base) var(--blora-easing-standard);
  z-index: var(--blora-z-base);
}

.blora-tabs__tab {
  flex: none;
  padding: 0.7em 1.1em;
  font-size: var(--blora-text-sm);
  font-weight: 500;
  color: var(--blora-color-text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
  white-space: nowrap;
  scroll-snap-align: start;
  transition:
    color var(--blora-duration-fast) var(--blora-easing-standard),
    background var(--blora-duration-fast) var(--blora-easing-standard);
  position: relative;

  /* Above the sliding indicator (same tier, later in DOM) but below page
     chrome like the sticky navbar, which must keep covering content. */
  z-index: var(--blora-z-base);
  background: none;
  border-inline-start: none;
  border-inline-end: none;
  border-block-start: none;
  border-radius: var(--blora-radius-sm);
}

.blora-tabs__tab:focus-visible {
  /* Tabs often sit flush against a clipped card edge. A component-owned
     radius keeps the inset focus indicator complete at every corner. */
  border-radius: var(--blora-radius-sm);
  outline-offset: calc(-1 * var(--blora-tabs-focus-inset));
}

/* A flush tab strip is designed to meet its containing surface edge. Reuse
   the standard surface curvature so the inset focus path remains concentric
   with an lg-radius card instead of introducing a second, tighter curve. */
.blora-tabs[data-flush] > .blora-tabs__nav > .blora-tabs__tab {
  border-radius: var(--blora-radius-lg);
}

.blora-tabs__tab:hover {
  color: var(--blora-color-text-primary);
}

.blora-tabs__tab[aria-selected="true"] {
  color: var(--blora-color-action-primary-default);
}

.blora-tabs__tab[disabled] {
  color: var(--blora-color-text-disabled);
  cursor: not-allowed;
}

/* Indicator instant mode (no transition for initial positioning) */
.blora-tabs__indicator[data-instant] {
  transition: none;
}

.blora-tabs__panel {
  padding-top: var(--blora-space-5);
}

/* Panel fade-in animation (Spec §17.3, ported from v1) */
.blora-tabs__panel[data-entering] {
  animation: blora-tab-panel-in var(--blora-duration-tabs-fade) var(--blora-easing-standard) both;
}

@keyframes blora-tab-panel-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

/* Pills variant */
.blora-tabs[data-variant="pills"] .blora-tabs__nav {
  border-bottom: none;
  gap: var(--blora-space-2);
}

.blora-tabs[data-variant="pills"] .blora-tabs__tab {
  border-bottom: none;
  border-radius: var(--blora-radius-full);
  padding: 0.4em 1em;
  margin-bottom: 0;
}

/* CSS-only fallback: selected pill gets a static background.
   When the controller is active (data-tabs-enhanced), the sliding
   indicator provides the background instead. */
.blora-tabs[data-variant="pills"] .blora-tabs__tab[aria-selected="true"] {
  color: var(--blora-color-text-on-accent);
  background: var(--blora-color-action-primary-default);
}

.blora-tabs[data-variant="pills"][data-tabs-enhanced] .blora-tabs__tab[aria-selected="true"] {
  background: none;
}

/* Pills indicator: full-height background pill that slides between tabs */
.blora-tabs[data-variant="pills"] .blora-tabs__indicator {
  top: 0;
  bottom: 0;
  height: var(--blora-tab-h, 100%);
  transform: translateX(var(--blora-tab-x, 0));
  border-radius: var(--blora-radius-full);
}

/* Vertical variant */
.blora-tabs[data-orientation="vertical"] {
  flex-direction: row;
}

.blora-tabs[data-orientation="vertical"] .blora-tabs__nav {
  flex-direction: column;
  border-bottom: none;
  border-inline-end: 1px solid var(--blora-color-border-subtle);
  padding-inline-end: var(--blora-space-1);
}

.blora-tabs[data-orientation="vertical"] .blora-tabs__tab {
  border-bottom: none;
  border-inline-end: 2px solid transparent;
  margin-bottom: 0;
  margin-inline-end: -1px;
}

.blora-tabs[data-orientation="vertical"] .blora-tabs__panel {
  padding-top: 0;
  padding-inline-start: var(--blora-space-6);
  flex: 1;
}

/* Full-bleed panels own their complete surface and spacing. */
.blora-tabs[data-flush] > .blora-tabs__panel {
  padding-block-start: 0;
  padding-inline-start: 0;
}

/* Vertical indicator: right-edge bar that slides between tabs */
.blora-tabs[data-orientation="vertical"] .blora-tabs__indicator {
  top: 0;
  inset-inline: auto -1px;
  bottom: auto;
  width: var(--blora-tabs-indicator-size);
  height: var(--blora-tab-h, 0);
  transform: translateY(var(--blora-tab-y, 0));
  transition:
    height var(--blora-duration-base) var(--blora-easing-standard),
    transform var(--blora-duration-base) var(--blora-easing-standard);
}

/* Reduced motion: disable indicator transitions and panel animation */
@media (prefers-reduced-motion: reduce) {
  .blora-tabs__indicator {
    transition: none;
  }

  .blora-tabs__panel[data-entering] {
    animation: none;
  }
}