/* tile_guide block — tile grid + searchable guide rail.
   Ported from design-export/student-life/student-life-hub.html. No literal colour
   (the prototype's rgba(255,255,255,…) chip strokes become the --on-dark-rgb
   channel); tile background colours live in the .tile--* modifiers as tokens. */

.tile-grid { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: calc(var(--gap-grid) * 1.6); align-items: start; }
.tile-grid--no-rail { grid-template-columns: minmax(0, 1fr); }
.tile-grid__col { display: grid; gap: var(--gap-grid); }
.tile-grid__tiles { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--gap-grid); }
.tile-guide__header { margin-bottom: 1.8rem; }

.tile { position: relative; overflow: hidden; display: flex; flex-direction: column; min-height: 280px; border-radius: var(--radius-md); padding: var(--pad-card, 1.6rem); text-decoration: none; color: var(--white); transition: transform var(--transition); }
.tile:hover { transform: translateY(-3px); }
.tile--wide { grid-column: 1 / -1; min-height: auto; }
.tile > .tile__inner { position: relative; display: flex; flex-direction: column; flex: 1; }

/* Tile colour treatments (tokens only). */
.tile--dark-alt  { background: var(--surface-dark-alt); }
.tile--blue      { background: var(--surface-blue); }
.tile--brand     { background: var(--surface-brand); }
.tile--employers { background: var(--aud-employers-text); }
.tile--dblue     { background: var(--dblue); }
.tile--dark      { background: var(--surface-dark); }

.tile__eyebrow { font-weight: 700; font-size: var(--fs-eyebrow); letter-spacing: .14em; text-transform: uppercase; opacity: .82; margin-bottom: .6rem; }
.tile__title { font-family: var(--font-display); font-weight: var(--display-weight); font-size: 2rem; line-height: var(--display-lh); letter-spacing: var(--display-track); margin-bottom: .7rem; }
.tile__body { font-size: var(--fs-min); line-height: 1.55; opacity: .9; max-width: 46ch; }
.tile__badge { align-self: flex-start; margin-bottom: .9rem; background: var(--btn-accent-bg); color: var(--btn-accent-text); font-family: var(--font-display); font-weight: 800; font-size: var(--fs-min); padding: .4rem .9rem; border-radius: var(--radius-pill); }
.tile__chips { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.1rem; }
.tile__chips span { border: 1px solid rgba(var(--on-dark-rgb), .28); background: rgba(var(--on-dark-rgb), .08); border-radius: var(--radius-pill); padding: .45rem .95rem; font-size: var(--fs-min); font-weight: 700; }
/* The tile sets color:var(--white) for its dark fill, but typography.css has
   `a { color: var(--link) }`, and a direct rule beats inheritance — so every CTA
   inside a tile was painting in the site link colour on a dark ground
   (measured 2.01:1 nlc, 2.49:1 ucnl, 2.59:1 ucdon, 2.54:1 hesta). Links inside
   a tile follow the tile's own foreground.
   The :hover pair matters too: a whole-card tile IS an <a>, and a:hover (0,1,1)
   out-specifies .tile (0,1,0), so hovering a tile repainted its entire contents
   in --link-hover on the brand fill (measured 1.02:1 on ucdon's dblue tile). */
.tile__cta,
.tile__chips a,
.tile a:not(.btn):not(.button) { color: inherit; }
a.tile:hover, a.tile:focus-visible,
.tile__cta:hover, .tile a:not(.btn):not(.button):hover { color: var(--white); }
.tile__cta { margin-top: auto; padding-top: 1.3rem; display: inline-flex; align-items: center; gap: .7rem; font-weight: 700; font-size: var(--fs-min); }
.tile__cta i { width: 32px; height: 32px; border-radius: 50%; border: 2px solid currentColor; display: inline-flex; align-items: center; justify-content: center; font-style: normal; flex: 0 0 auto; }

/* Image tile: photo + brand scrim. */
.tile__media { position: absolute; inset: 0; background: repeating-linear-gradient(135deg, var(--ph-stripe-a) 0 12px, var(--ph-stripe-b) 12px 24px); }
.tile__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.tile__scrim { position: absolute; inset: 0; background: linear-gradient(160deg, rgba(var(--tint-rgb), .93) 0%, rgba(var(--tint-rgb), .55) 100%); }

/* Guide rail. */
.guide-rail { position: sticky; top: 1.4rem; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-md); padding: 1.6rem 1.5rem; box-shadow: var(--shadow-sm); max-height: calc(100vh - 2.8rem); overflow-y: auto; }
.guide-rail__title { font-size: 1.6rem; margin-bottom: .5rem; }
.guide-rail__intro { font-size: var(--fs-min); color: var(--muted); margin-bottom: 1rem; }
.guide-rail__search { margin-bottom: 1.2rem; }
.guide-rail__empty { font-size: var(--fs-min); color: var(--muted); }
.guide-rail ul { list-style: none; margin: 0; padding: 0; }
.guide-rail a { display: flex; justify-content: space-between; align-items: center; gap: .6rem; padding: .55rem 0; border-bottom: 1px solid var(--line); font-size: var(--fs-min); text-decoration: none; color: var(--text-heading); }
.guide-rail a:hover { color: var(--link); }
.guide-rail__chev { color: var(--muted); }
.guide-rail__group { margin-bottom: 1.2rem; }
.guide-rail__group-label { margin-bottom: .5rem; }
.guide-rail__footer { display: flex; justify-content: space-between; gap: .6rem; font-size: var(--fs-min); font-weight: 700; padding-top: .4rem; text-decoration: none; color: var(--link); border-bottom: 0 !important; }

/* Bare search field (no chrome box) for the rail. */
.search__field--bare { display: flex; align-items: center; gap: .6rem; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: .55rem .8rem; color: var(--muted); }
.search__field--bare .search__input { border: 0; background: none; width: 100%; font: inherit; color: var(--ink); min-width: 0; }

@media (max-width: 64em) {
  .tile-grid { grid-template-columns: 1fr; }
  .guide-rail { position: static; max-height: none; }
}
@media (max-width: 52em) {
  .tile-grid__tiles { grid-template-columns: 1fr; }
}

/* Feature-tile pills as individual links (guide CPT). Match the chip look and
   inherit the tile's on-dark text colour; they're interactive, so add hover +
   a visible keyboard focus ring. */
.tile__chips a {
  border: 1px solid rgba(var(--on-dark-rgb), .28);
  background: rgba(var(--on-dark-rgb), .08);
  border-radius: var(--radius-pill);
  padding: .45rem .95rem;
  font-size: var(--fs-min);
  font-weight: 700;
  color: inherit;
  text-decoration: none;
  transition: background var(--transition), border-color var(--transition);
}
.tile__chips a:hover { background: rgba(var(--on-dark-rgb), .18); border-color: rgba(var(--on-dark-rgb), .5); }

/* The wide/feature tile is a <div>, not a whole link — its pills + CTA carry the
   interaction, so drop the whole-card hover-lift and pointer. */
.tile--wide { cursor: default; }
.tile--wide:hover { transform: none; }
.tile--wide a.tile__cta { align-self: flex-start; }
.tile--wide a.tile__cta:hover { text-decoration: underline; }