/*
 * The guides index: the heading, the filter chips (the concept's), the grid of
 * 31 cards (base.css's .guides/.card) and the introduction to composition.
 * The chips are hidden until guides.js runs, so without JavaScript every card
 * simply shows.
 */

.gx-head { padding-block: clamp(28px, 4vw, 48px) clamp(36px, 5vw, 64px); }
.gx-head .crumbs { margin-bottom: clamp(28px, 4vw, 48px); }
.gx-head h1 { font-size: clamp(44px, 6.4vw, 92px); }

/* The chips: fixed metrics in every state, so pressing one never moves the row. */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.filters[hidden] { display: none; }
.filters button { font: 500 14px/1.2 var(--body); color: var(--muted); background: transparent; border: 1px solid var(--line-2);
  border-radius: 999px; padding: 8px 14px; min-height: 40px; cursor: pointer;
  transition: color .2s, background-color .2s, border-color .2s; }
.filters button:hover { color: var(--text); border-color: rgba(238, 241, 246, .5); }
.filters button[aria-pressed="true"] { background: var(--text); color: var(--ink); border-color: var(--text); }
.filters button small { font: 500 11px var(--mono); margin-left: 6px; opacity: .8; }
.filters button[data-f="pro"] small { color: var(--amber); opacity: 1; }
.filters button[data-f="pro"][aria-pressed="true"] small { color: #7a5200; }

.gx-count { margin: 0 0 22px; }

/* The index's cards carry h2 (under the page's h1); they look like the home's h3. */
.card .meta h2 { font-size: 22px; line-height: 1.15; font-weight: 600; letter-spacing: -.02em; }
@media (max-width: 600px) { .card--grid .meta h2 { font-size: 17px; } }

/* A filter change fades the grid in; transform and opacity only. */
.guides.is-filtering .card:not([hidden]) { animation: gx-in .35s var(--ease-out) both; }
@keyframes gx-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.gx-intro { border-top: 1px solid var(--line); margin-top: clamp(72px, 10vw, 140px); }
.gx-intro-grid { display: grid; gap: clamp(28px, 4vw, 64px); }
@media (min-width: 900px) { .gx-intro-grid { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); align-items: start; } }
.gx-intro .prose p:first-child { color: var(--text); }