/* hugo/assets/css/browse.css — /browse/ page styles (issue #174 PR 2).
   Page-level layout (banner, shell grid, rails, mobile drawer breakpoint,
   animations). Card-internal styles live in hugo-apps/src/shared/cards/card.css
   (PR 1) and load via the Vue card components.
*/

/* ── Desktop layout ──────────────────────────────────────────── */

.browse-shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 1.5rem;
  max-width: 1440px;
  margin: 0 auto;
  padding: 1rem;
}

.browse-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.browse-rail-curation {
  display: grid;
  grid-template-columns: repeat(5, minmax(220px, 1fr));
  gap: 1rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
}
.browse-rail-curation > * { scroll-snap-align: start; }

/* ── Banner ──────────────────────────────────────────────────── */

.browse-banner {
  background: var(--sapShellColor);
  padding: 1.5rem 1rem;
  text-align: center;
}
.browse-banner h1 { margin: 0 0 1rem; }
.browse-banner__search {
  width: 100%;
  max-width: 480px;
  padding: 0.5rem 0.75rem;
}

/* ── Skip-link (a11y) ────────────────────────────────────────── */

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  padding: 0.5rem 1rem;
  background: var(--sapShellColor);
}
.skip-link:focus { top: 0; }

/* ── Mobile filter drawer (#216) ─────────────────────────────────────
   - Filters button is hidden on desktop, sticky-bar above the grid on mobile.
   - Below 1024px: keep the SSR'd #browse-filter-rail hidden in its original
     parent (controller.ts moves it into <ui5-dialog> on first open). The
     rail is unconditionally visible *inside* the dialog so it renders
     correctly when the drawer opens.
*/

/* Default desktop: hide the toggle button entirely. */
.browse-filter-toggle { display: none; }

/* Active-filter count badge inside the toggle button. */
.browse-filter-toggle__count {
  display: inline-block;
  margin-inline-start: 0.25rem;
  min-width: 1.5em;
  padding: 0 0.4em;
  border-radius: 999px;
  background: var(--sapButton_Selected_Background, #0a6ed1);
  color: var(--sapButton_Selected_TextColor, #fff);
  font-size: 0.85em;
  font-weight: 600;
  text-align: center;
}
.browse-filter-toggle__count[hidden] { display: none; }

@media (max-width: 1023px) {
  .browse-shell { grid-template-columns: 1fr; }
  /* Hide the rail in its original DOM position; the dialog re-shows it. */
  #browse-filter-rail { display: none; }
  .browse-rail-curation {
    grid-template-columns: repeat(3, minmax(200px, 80vw));
  }

  /* Sticky bar above the grid: button + title + sort, single row. */
  .browse-grid-header {
    position: sticky;
    top: 0;
    z-index: 5;
    background: var(--sapBackgroundColor, #fff);
    padding-block: 0.5rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
  }
  .browse-filter-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.85rem;
    border: 1px solid var(--sapButton_BorderColor, #b3b3b3);
    background: var(--sapButton_Background, #fff);
    color: var(--sapButton_TextColor, inherit);
    border-radius: 0.5rem;
    cursor: pointer;
    font: inherit;
    line-height: 1;
  }
  .browse-filter-toggle:hover { background: var(--sapButton_Hover_Background, #ebf5fe); }
  .browse-filter-toggle:focus-visible {
    outline: 2px solid var(--sapButton_Focus_BorderColor, #0a6ed1);
    outline-offset: 2px;
  }
  /* Title shrinks but stays visible; sort sits at the end. */
  .browse-grid-title { font-size: 1rem; margin: 0; }
  .browse-sort { margin-inline-start: auto; }
}

/* Inside the dialog the rail is always visible regardless of viewport
   (the dialog is only opened on mobile, but we don't want the @media
   rule above to keep #browse-filter-rail { display: none } when it's a
   dialog descendant). The descendant selector wins on specificity. */
ui5-dialog#browse-filter-drawer #browse-filter-rail {
  display: block;
}

/* ── Progress-ring draw-in (decision #13) ────────────────────── */
/* The Vue island adds nav-card__progress--animate-in to the ring on
   hydration; this keyframe sweeps the stroke-dashoffset from full
   (empty ring) to its target value (actual progress). The marker
   class is rendered by ProgressOverlay.vue (PR 1); the keyframes
   live here so /browse/ owns the visual layer.
*/
.nav-card__progress--animate-in circle.ring__indicator {
  animation: ring-draw-in 250ms ease forwards;
}
@keyframes ring-draw-in {
  from { stroke-dashoffset: var(--ring-circumference); }
  to   { stroke-dashoffset: var(--ring-target); }
}
@media (prefers-reduced-motion: reduce) {
  .nav-card__progress--animate-in circle.ring__indicator { animation: none; }
}

/* ── Filter rail (aside, fieldset, label) ───────────────────────────
   The rail is a static SSR'd <aside> with <fieldset> groups. Without
   block layout on the labels the checkbox + text wrap independently
   when the column is narrow — e.g. 'Advanced' wraps to its own line
   while its checkbox stays at the end of the prior line. Block-style
   labels (display: flex) keep checkbox and text together, one filter
   per row. */

.browse-rail {
  /* The .browse-shell grid column is 280px on desktop; the rail just
     needs vertical stacking and a comfortable type scale. */
  font-size: 0.875rem;
}

.browse-filter-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.browse-filter-group {
  border: 1px solid var(--sapGroup_ContentBorderColor, #d9d9d9);
  border-radius: 0.25rem;
  padding: 0.5rem 0.75rem 0.75rem;
  margin: 0;
}

.browse-filter-group legend {
  padding: 0 0.25rem;
  font-weight: 600;
  color: var(--sapGroup_TitleTextColor, inherit);
}

.browse-filter-group label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0;
  cursor: pointer;
}

.browse-filter-group label input[type="checkbox"] {
  flex: 0 0 auto;   /* checkbox keeps its native size; text fills remainder */
}

.browse-filter-clear {
  align-self: flex-start;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--sapButton_BorderColor, #b3b3b3);
  border-radius: 0.5rem;
  background: var(--sapButton_Background, #fff);
  color: var(--sapButton_TextColor, inherit);
  cursor: pointer;
  font: inherit;
}
.browse-filter-clear:hover { background: var(--sapButton_Hover_Background, #ebf5fe); }
.browse-filter-clear:focus-visible {
  outline: 2px solid var(--sapButton_Focus_BorderColor, #0a6ed1);
  outline-offset: 2px;
}

/* ── Rails hidden when filter/search active (decision Q4, issue #281) ──── */
/* Vue island sets [data-rails-hidden] on the data-rails-container div
   when any filter is active or a search query is present. The container
   must collapse from layout — not just fade — so the card grid moves up
   to fill the space. The original implementation used `opacity: 0` only,
   which left a ~1400px-tall invisible block above the grid and made the
   page appear empty after any filter click (#281).
   If a smooth fade-then-collapse animation is needed later, follow up
   with a JS hook that toggles `display: none` on `transitionend`; for
   now layout integrity beats a 150ms transition. */
[data-rails-container][data-rails-hidden] {
  display: none;
}

/* ── Per-rail collapse + Customize popover (#285) ─────────────────────── */
/* Each <section data-rail data-rail-id="..."> gets a chevron toggle in its
   header. When [data-collapsed], the cards strip is hidden but the header
   stays visible so the user can expand again. When [data-rail-hidden]
   (set from the Customize popover), the whole rail is removed from layout
   — same idiom as data-rails-hidden above but per-rail. */

.browse-rail__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0;
  background: none;
  border: none;
  color: inherit;
  font: inherit;
  cursor: pointer;
  text-align: start;
}
.browse-rail__toggle:hover .browse-rail__title { text-decoration: underline; }
.browse-rail__toggle:focus-visible {
  outline: 2px solid var(--sapButton_Focus_BorderColor, #0a6ed1);
  outline-offset: 2px;
  border-radius: 0.25rem;
}

.browse-rail__chevron {
  display: inline-block;
  transition: transform 150ms ease;
}
@media (prefers-reduced-motion: reduce) {
  .browse-rail__chevron { transition: none; }
}
[data-rail][data-collapsed] .browse-rail__chevron {
  transform: rotate(-90deg);   /* ▾ → ▸ */
}

[data-rail][data-collapsed] .browse-rail-curation { display: none; }
[data-rail][data-rail-hidden] { display: none; }

/* Customize button reuses the Filters-toggle vocabulary (button styling
   shared via CSS so the two buttons look like a coherent toolbar group). */
.browse-customize-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--sapButton_BorderColor, #b3b3b3);
  background: var(--sapButton_Background, #fff);
  color: var(--sapButton_TextColor, inherit);
  border-radius: 0.5rem;
  cursor: pointer;
  font: inherit;
  line-height: 1;
}
.browse-customize-toggle:hover { background: var(--sapButton_Hover_Background, #ebf5fe); }
.browse-customize-toggle:focus-visible {
  outline: 2px solid var(--sapButton_Focus_BorderColor, #0a6ed1);
  outline-offset: 2px;
}

.browse-customize-popover__body {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
}
.browse-customize-popover__body label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}