/* © 2026 Created with ♥ by Alex Munteanu | alexmunteanu.com */
/* Courses gallery - Folio surface layer. Base elements, chrome and shared
   components live in assets/theme/folio.css; this file owns only the gallery
   layout: hero, ghost numeral, no-box tile grid and the library rail. It
   consumes Folio tokens via var(--…) and re-declares no palette value.
   Load order: tokens.css -> folio.css -> this. */

.topbar-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }

/* ---------- Page shell ---------- */
.page {
  position: relative;
  padding: 60px var(--page-pad) 0; box-sizing: border-box;
}

/* Giant ghost numeral (library size) bleeding off the top-right edge */
.hero-ghost {
  position: absolute; top: -30px; right: -10px;
  font-size: min(21vw, 260px); z-index: 0;
}

/* ---------- Library layout: reading column + sticky rail ---------- */
.lgrid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1fr) 250px; gap: 72px; align-items: start; }
.gallery-main { min-width: 0; }

.lgrid-rail { position: sticky; top: 90px; }
.rail-inner { border-left: 1px solid var(--color-border); padding-left: 22px; }
.rail-title { font-family: var(--font-display); font-weight: 600; font-size: 15px; color: var(--color-text); }
.rail-meta { font-family: var(--font-mono); font-size: 11px; color: var(--color-text-faint); margin-top: 6px; }

/* ---------- Hero ---------- */
.hero-title { font-size: var(--text-hero); margin: 14px 0 0; }
.hero-lead { max-width: 46ch; color: var(--color-text-muted); font-size: 16.5px; margin: 22px 0 0; }

.search-wrap { margin-top: 48px; }
.page-count { margin: 10px 0 0; font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em; color: var(--color-text-faint); }

/* ---------- Tile grid (no-box, hairline-bottom only) ---------- */
.grid { margin-top: 8px; }
#rows { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 0 40px; }

.card {
  position: relative; display: block; padding: 24px 0 28px;
  border-bottom: 1px solid var(--color-border); cursor: pointer;
  color: var(--color-text-muted);
}
.card:hover { text-decoration: none; color: var(--color-text); }
.card:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--color-brand-soft); }

.card-arrow {
  float: right; font-size: 18px; color: var(--color-text);
  opacity: 0; transition: opacity var(--dur-fast) var(--ease-out);
}
.card:hover .card-arrow, .card:focus-visible .card-arrow { opacity: 1; }

.card-num {
  font-family: var(--font-display); font-size: 13px;
  color: var(--color-text-ghost); transition: color var(--dur-fast) var(--ease-out);
}
.card:hover .card-num { color: var(--color-text); }

.card-title {
  font-family: var(--font-display); font-weight: 600; font-size: var(--text-22);
  letter-spacing: var(--tracking-heading); line-height: 1.15; margin: 10px 0 0;
  color: var(--color-text-muted); transition: color var(--dur-fast) var(--ease-out);
}
.card:hover .card-title { color: var(--color-text); }

.card-desc { margin: 8px 0 0; font-size: 13.5px; color: var(--color-text-faint); line-height: 1.6; }

.card-meta { display: flex; gap: 16px; margin-top: 12px; flex-wrap: wrap; align-items: baseline; }
.card-meta .tag {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: var(--tracking-eyebrow); text-transform: uppercase; color: var(--color-text-faint);
}

/* ---------- Empty states (folio owns .empty base) ---------- */
.empty-page { padding: 56px 0; }
.empty-search { padding: 40px 0; }

/* ---------- Footer ---------- */
.site-footer { padding-left: 0; padding-right: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 1099px) {
  .lgrid { display: block; }
  .lgrid-rail { display: none; }
}
@media (max-width: 720px) {
  .page { padding: 44px 22px 0; }
  .hero-ghost { font-size: 34vw; }
}
@media (max-width: 620px) {
  #rows { grid-template-columns: 1fr; }
}