.content-modal {
  position: absolute;
  height: 0%;
  width: 100%;
  top: 100%;
  background: var(--color-light);
  /* background: var(--color-white); */
  overflow: hidden;
  z-index: 99;
  transition: all 0.3s;
  --pane-bg: rgb(252, 245, 229);
}
.dark .content-modal {
  --pane-bg: #1a1612;
}

.content-modal.opened {
  height: 100%;
  top: 0%;
  transition: all 0.5s;
}

.content-modal .keen-slider,
.content-modal .keen-slider__slide {
  -webkit-user-select: text;
  user-select: text;
}

/* Desktop icon rail (≥ lg). Active item highlight is applied in a later task. */
.nav-rail__item span:last-child {
  letter-spacing: 0.02em;
}
.nav-rail .menu-icon {
  width: 30px;
  height: 30px;
}
/* Active section: accent the icon (currentColor) + label, with a subtle
   background and an inset accent bar on the rail edge. */
.nav-rail__item--active {
  color: var(--color-accent);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: inset 3px 0 0 var(--color-accent);
}

/* Desktop (≥ lg): the hamburger drawer slides in from the LEFT (over the rail)
   instead of the mobile off-canvas-right container scroll. The mobile mechanism
   is untouched. sideMenu is the direct child of <nav>; the extra type selector
   beats the base `.invisible` so the panel can be shown here. */
@media (min-width: 1024px) {
  nav > [data-content-target="sideMenu"] {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    width: 315px;
    visibility: visible;
    background: var(--color-black);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 1000;
    overflow-y: auto;
  }
  nav > [data-content-target="sideMenu"].menu-open-desktop {
    transform: translateX(0);
  }
}

/* Floating scroll buttons (index pane). Sticky, zero-height so they overlay
   content without shifting it; shown by pane_scroll_controller via .is-visible. */
.pane-scroll__nav {
  position: sticky;
  height: 0;
  z-index: 5;
  display: none;
}
/* Only show in the two-pane index layout (not single-content panes). */
.content-modal.has-detail .pane-scroll__nav.is-visible {
  display: block;
}
/* Cancel the pane's p-5 padding so the buttons/fade reach the true edges. */
.pane-scroll__nav--up {
  top: -1.25rem;
}
.pane-scroll__nav--down {
  bottom: -1.25rem;
}
.pane-scroll__btn {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  cursor: pointer;
}
.pane-scroll__btn:hover {
  background: color-mix(in srgb, var(--color-primary) 85%, #000);
}
.pane-scroll__nav--up .pane-scroll__btn {
  top: 0.75rem;
}
.pane-scroll__nav--down .pane-scroll__btn {
  bottom: 0.75rem;
}
/* Soft fade so list content dissolves under the buttons. --pane-bg is the
   opaque panel colour (set on .content-modal, theme-aware). */
.pane-scroll__nav::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 72px;
  pointer-events: none;
}
.pane-scroll__nav--up::before {
  top: 0;
  background: linear-gradient(to bottom, var(--pane-bg, #fcf5e5), transparent);
}
.pane-scroll__nav--down::before {
  bottom: 0;
  background: linear-gradient(to top, var(--pane-bg, #fcf5e5), transparent);
}

/* ── Desktop shell (≥ lg): dock the content panel, cross-fade instead of slide ── */
@media (min-width: 1024px) {
  .content-modal {
    position: absolute;
    inset: 0;
    height: 100%;
    top: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease;
    /* The panel is permanently docked over the home hero here (not a transient
       slide-up like mobile), so it must be fully opaque. `--color-light` is only
       95% opaque; dark mode keeps its opaque `--color-surface` via .dark rule. */
    background: rgb(252, 245, 229);
  }
  .content-modal.opened {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.25s ease;
  }
  /* The rail replaces the in-panel back/menu chrome on desktop. */
  .content-modal [data-content-target="backBtn"],
  .content-modal .content-title .menu-icon {
    display: none;
  }

  /* Default desktop: single content pane fills the stage; empty B is hidden. */
  .content-modal .keen-slider {
    display: grid !important;
    grid-template-columns: 1fr;
    transform: none !important;
    width: 100% !important;
    flex: 1 1 auto;
    min-height: 0;
  }
  .content-modal .keen-slider__slide {
    min-width: 0 !important;
    max-width: none !important;
    transform: none !important;
    min-height: 100%;
  }
  .content-modal:not(.has-detail) .keen-slider__slide[data-content-target="contentB"] {
    display: none;
  }
  /* Two-pane only when a detail exists: index (A) | detail (B). The index column
     grows with viewport width toward ~1/3, with a floor (usable card width) and
     a ceiling (so it never dominates on very wide screens). */
  .content-modal.has-detail .keen-slider {
    grid-template-columns: clamp(300px, 35%, 540px) 1fr;
  }
  .content-modal.has-detail .keen-slider__slide[data-content-target="contentA"] {
    border-right: 1px solid color-mix(in srgb, var(--color-secondary) 25%, transparent);
  }

  /* Index list (Events/Resources) stacks to a single column in the narrow
     index pane — the mobile 2/3-up grid would be cramped here. */
  .content-modal .index-card-grid {
    grid-template-columns: 1fr;
  }

  /* Hide the index pane's scrollbar (replaced by the floating scroll buttons). */
  .content-modal.has-detail [data-content-target="contentA"] {
    scrollbar-width: none;
  }
  .content-modal.has-detail [data-content-target="contentA"]::-webkit-scrollbar {
    width: 0;
    height: 0;
  }

  /* Single-content pages: comfortable centered measure. */
  .reading-column {
    max-width: 68ch;
    margin-inline: auto;
  }

  /* Event/convocation detail: keep content at a readable measure on wide
     screens rather than stretching cards edge-to-edge. Centered in the detail
     pane; left-aligned next to the section nav on the Convocation page. */
  .event-show__body {
    max-width: 880px;
  }
  .event-show:not(.has-section-nav) .event-show__body {
    margin-inline: auto;
  }

  /* Convocation in-page section nav (only when populated by JS). The nav column
     widens with viewport (capped), and the whole block caps its width so the
     content doesn't stretch into unreadably-long lines on very wide screens. */
  .event-show.has-section-nav {
    display: grid;
    grid-template-columns: clamp(200px, 22%, 300px) 1fr;
    gap: 2rem;
    align-items: start;
    max-width: 1200px;
    margin-inline: auto; /* centered in the stage, matching event detail content */
  }
  .event-show .section-nav { display: none; }
  .event-show.has-section-nav .section-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    position: sticky;
    top: 0.5rem;
  }
  .section-nav__item {
    text-align: left;
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    color: var(--color-secondary);
    cursor: pointer;
  }
  .section-nav__item:hover { color: var(--color-primary); }
  .section-nav__item--active {
    background: color-mix(in srgb, var(--color-primary) 12%, transparent);
    color: var(--color-primary);
    font-weight: 600;
  }

  /* Home callout: show only the first slide (the verse) on desktop — no rotation.
     The slider is made inert via data-slider-disable-desktop-value. */
  .callouts .keen-slider__slide:not(:first-child) {
    display: none;
  }

  /* The rail's hamburger replaces the home top-right hamburger on desktop.
     Higher specificity than `.menu-icon { display:inline-block }` so it wins. */
  .home-topbar .menu-icon {
    display: none;
  }
}