/*
 * Mobile TOC - Narrow-screen table of contents
 * Styles the pill and the bottom sheet.
 *
 * @license MIT
 * @copyright 2026 Mickaël Canouil
 * @author Mickaël Canouil
 */

.mobile-toc-pill,
.mobile-toc-sheet {
  background: var(--mobile-toc-bg, var(--bs-body-bg, #fff));
  color: var(--mobile-toc-fg, var(--bs-body-color, #212529));
}

/*
 * z-index 1020 sits above page content, the docked sidebar and the back-to-top
 * button (1000), and below Bootstrap's modal layers (1055) and Quarto's search
 * overlay, so an open overlay covers the pill.
 */
.mobile-toc-pill {
  position: fixed;
  right: calc(var(--mobile-toc-inset-inline, 1rem) + env(safe-area-inset-right) + var(--mobile-toc-offset-x, 0px));
  bottom: calc(var(--mobile-toc-inset-block, 1rem) + env(safe-area-inset-bottom) + var(--mobile-toc-offset-y, 0px));
  z-index: 1020;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 44px;
  margin: 0;
  padding: 0 1rem;
  border: 1px solid var(--mobile-toc-edge, var(--bs-border-color, #dee2e6));
  border-radius: 999px;
  box-shadow: var(--mobile-toc-shadow, 0 2px 8px rgba(0, 0, 0, 0.15));
  font-family: var(--bs-font-sans-serif, system-ui, sans-serif);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
  text-transform: none;
}

.mobile-toc-pill:dir(rtl) {
  right: auto;
  left: calc(var(--mobile-toc-inset-inline, 1rem) + env(safe-area-inset-left) + var(--mobile-toc-offset-left, 0px));
}

.mobile-toc-pill:focus-visible,
.mobile-toc-close:focus-visible,
.mobile-toc-sheet a:focus-visible {
  outline: 2px solid var(--mobile-toc-accent, var(--bs-link-color, #0d6efd));
  outline-offset: 2px;
}

body:has(> .mobile-toc-pill) #quarto-back-to-top {
  left: calc(50% + (var(--mobile-toc-offset-left, 0px) - var(--mobile-toc-offset-x, 0px)) / 2);
  bottom: calc(
    var(--mobile-toc-inset-block, 1rem) + env(safe-area-inset-bottom) + var(--mobile-toc-offset-y, 0px) +
      var(--mobile-toc-pill-height, 44px) + 0.75rem
  );
}

.mobile-toc-sheet {
  inset: auto var(--mobile-toc-offset-x, 0px) var(--mobile-toc-offset-y, 0px) var(--mobile-toc-offset-left, 0px);
  box-sizing: border-box;
  width: auto;
  max-width: none;
  height: auto;
  max-height: 70vh;
  max-height: 70dvh;
  margin: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0.6rem 0.75rem calc(1rem + env(safe-area-inset-bottom));
  border: 0;
  border-top: 1px solid var(--mobile-toc-edge, var(--bs-border-color, #dee2e6));
  border-radius: var(--mobile-toc-radius, var(--bs-border-radius-lg, 0.5rem))
    var(--mobile-toc-radius, var(--bs-border-radius-lg, 0.5rem)) 0 0;
  box-shadow: var(--mobile-toc-sheet-shadow, 0 -4px 18px rgba(0, 0, 0, 0.18));
  transition: transform 0.2s ease-out;
}

.mobile-toc-sheet::backdrop {
  background: var(--mobile-toc-backdrop, rgba(0, 0, 0, 0.45));
}

.mobile-toc-sheet ul {
  margin: 0;
  padding-inline-start: 0;
  list-style: none;
}

.mobile-toc-sheet ul ul a {
  padding-inline-start: 1.2rem;
}

.mobile-toc-sheet ul ul ul a {
  padding-inline-start: 1.9rem;
}

.mobile-toc-sheet a {
  display: flex;
  align-items: center;
  min-height: 32px;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  color: inherit;
  font-size: 0.9rem;
  text-decoration: none;
}

.mobile-toc-sheet a.active {
  background: var(
    --mobile-toc-active-bg,
    color-mix(
      in srgb,
      var(--mobile-toc-accent, var(--bs-link-color, #0d6efd)) 15%,
      var(--mobile-toc-bg, var(--bs-body-bg, #fff))
    )
  );
  color: var(--mobile-toc-fg, var(--bs-body-color, #212529));
  font-weight: 700;
  border-radius: 0 999px 999px 0;
  box-shadow: inset 3px 0 0 var(--mobile-toc-accent, var(--bs-link-color, #0d6efd));
}

.mobile-toc-sheet a.active:dir(rtl) {
  border-radius: 999px 0 0 999px;
  box-shadow: inset -3px 0 0 var(--mobile-toc-accent, var(--bs-link-color, #0d6efd));
}

.mobile-toc-sheet .header-section-number {
  margin-inline-end: 0.35rem;
}

@starting-style {
  .mobile-toc-sheet:popover-open {
    transform: translateY(100%);
  }
}

.mobile-toc-sheet-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 0 0.4rem;
  margin-inline-start: 0.5rem;
}

.mobile-toc-sheet-label {
  color: var(--mobile-toc-muted, var(--bs-secondary-color, #6c757d));
  font-family: var(--bs-font-sans-serif, system-ui, sans-serif);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.mobile-toc-close {
  display: grid;
  place-items: center;
  min-width: 32px;
  min-height: 32px;
  padding: 0;
  border: 1px solid var(--mobile-toc-edge, var(--bs-border-color, #dee2e6));
  border-radius: 8px;
  background: transparent;
  color: inherit;
}

@media (prefers-reduced-motion: reduce) {
  .mobile-toc-sheet {
    transition: none;
  }
}

@media print {
  .mobile-toc-pill,
  .mobile-toc-sheet {
    display: none !important;
  }
}

body:has(#quarto-sidebar-glass.show) .mobile-toc-pill {
  visibility: hidden;
}