/* Section patterns: layouts to reuse across pages, each shown live with its markup on patterns.html.
   1. Cards over the pattern: .pat-field around .pat-cards
   2. List and preview: .pat-preview
   3. Tabs and preview: .pat-tabs
   2 and 3 share the product window (.pat-window) and the switching in patterns.js. Every pattern works on an
   ink or a paper section ([data-tone]); colors come from the v2 tone tokens, so they flip with the band. */

.pat-link { display: inline-flex; align-items: center; gap: .45rem; color: var(--pat-accent); font-weight: 500; text-decoration: none; }
.pat-link svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; transition: transform 250ms var(--ease-out, ease-out); }
.pat-link:hover svg { transform: translateX(4px); }
.pat-more { margin-top: 1.6rem; }

[data-tone="ink"] { --pat-accent: var(--mint); }
[data-tone="paper"] { --pat-accent: var(--forest); }

/* ---------- 1. Cards over the pattern ----------
   Opaque cards on a full-width band of the tonal Channels pattern, the brand's version for cards. The band
   sits between the section head and anything after it: nothing with type runs over the pattern. */

.pat-field {
  position: relative; padding: clamp(2.5rem, 5vw, 3.5rem) 0;
  background: url("assets/graphics/channels-section-tonal-green-ink.svg") center / cover no-repeat;
}
[data-tone="paper"] .pat-field { background-image: url("assets/graphics/channels-section-tonal-fashion-white.svg"); }
.pat-cards { display: grid; grid-template-columns: repeat(var(--pat-cols, 4), minmax(0, 1fr)); gap: 12px; margin: 0; padding: 0; list-style: none; }
.pat-card {
  display: grid; align-content: start; gap: .6rem; min-height: 280px; padding: 1.4rem 1.4rem 1.6rem;
  border: 1px solid transparent; border-radius: var(--radius); background: var(--paper); color: var(--ink);
}
[data-tone="paper"] .pat-card { background: var(--white); border-color: rgba(14, 37, 27, .1); }
.pat-card h3 { font-size: 1.15rem; letter-spacing: -0.02em; line-height: 1.25; text-wrap: balance; }
.pat-card p { font-size: .93rem; line-height: 1.5; color: var(--text-muted); }
.pat-card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.4rem; }
.pat-mark { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 10px; background: var(--forest); color: var(--mint); }
.pat-mark svg { width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.pat-num { font-size: .85rem; letter-spacing: .06em; color: var(--text-muted); font-variant-numeric: tabular-nums; }
.pat-cards--short .pat-card { min-height: 0; }
.pat-sub { margin: 0; font-size: 1.25rem; font-weight: 500; letter-spacing: -0.02em; line-height: 1.3; color: var(--on-dark); }
[data-tone="paper"] .pat-sub { color: var(--ink); }
.wrap:has(> .pat-sub) + .pat-field { padding-top: 1.5rem; }

/* Dark cards, for an ink section: opaque, a step lighter than the band */
.pat-cards--dark .pat-card { background: #1A2F25; color: var(--paper); border-color: var(--line-dark); }
.pat-cards--dark .pat-card p, .pat-cards--dark .pat-num { color: var(--on-dark-muted); }

/* ---------- Shared: the product window ----------
   Always dark, on either band. Its body holds one panel per choice; what goes in a panel is the page's. */

.pat-window {
  --pw-text: var(--paper); --pw-muted: rgba(247, 243, 234, .78); --pw-faint: rgba(247, 243, 234, .6); --pw-line: rgba(247, 243, 234, .14);
  display: grid; grid-template-rows: auto 1fr; min-height: var(--pat-window-h, 540px);
  border: 1px solid var(--pw-line); border-radius: var(--radius); background: var(--window); color: var(--pw-text); overflow: hidden;
}
[data-tone="paper"] .pat-window { border-color: transparent; box-shadow: 0 30px 60px -36px rgba(14, 37, 27, .55); }
.pat-window-bar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .8rem 1rem; border-bottom: 1px solid var(--pw-line); font-size: .88rem; }
.pat-window-name { display: flex; align-items: center; gap: .55rem; font-weight: 500; }
.pat-window-name i { display: grid; place-items: center; width: 22px; height: 22px; border-radius: 6px; background: var(--mint); color: var(--forest); }
.pat-window-name i:empty { display: none; }
.pat-window-name i svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.pat-window-meta { font-size: .8rem; color: var(--pw-faint); }
.pat-window-body { position: relative; }
.pat-panel { position: absolute; inset: 0; padding: 1.1rem; overflow: hidden; }
.pat-panel[hidden] { display: none; }

/* ---------- 2. List and preview ----------
   Numbered rows on the left, every line showing; the window on the right shows the chosen row's panel. */

.pat-preview { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(2rem, 4vw, 3.5rem); align-items: stretch; }
.pat-rows { display: grid; align-content: start; border-top: 1px solid var(--line-dark); }
.pat-row {
  position: relative; display: grid; grid-template-columns: 2.6rem minmax(0, 1fr); gap: 0 .9rem; width: 100%;
  padding: 1.25rem 1rem 1.3rem; border: 0; border-bottom: 1px solid var(--line-dark); background: transparent;
  color: inherit; font: inherit; text-align: left; cursor: pointer; transition: background-color 200ms;
}
.pat-row::before {
  content: ""; position: absolute; left: 0; top: -1px; bottom: -1px; width: 2px; background: var(--pat-accent);
  transform: scaleY(0); transform-origin: top; transition: transform 350ms var(--ease-out, ease-out);
}
.pat-row-n { padding-top: .1rem; font-size: .85rem; letter-spacing: .06em; color: var(--on-dark-faint); font-variant-numeric: tabular-nums; }
.pat-row b { display: block; font-size: 1.15rem; font-weight: 500; letter-spacing: -0.02em; line-height: 1.25; color: var(--on-dark-muted); transition: color 200ms; }
.pat-row-d { display: block; margin-top: .4rem; font-size: .93rem; line-height: 1.5; color: var(--on-dark-faint); transition: color 200ms; }
.pat-row:hover, .pat-row[aria-selected="true"] { background: var(--surface-dark); }
.pat-row[aria-selected="true"]::before { transform: scaleY(1); }
.pat-row[aria-selected="true"] .pat-row-n { color: var(--pat-accent); }
.pat-row[aria-selected="true"] b { color: var(--on-dark); }
.pat-row[aria-selected="true"] .pat-row-d { color: var(--on-dark-muted); }

/* ---------- 3. Tabs and preview ----------
   The titles run across the top as tabs; under them the chosen one's line sits beside a wider window. */

.pat-tabs-row { display: grid; grid-template-columns: repeat(var(--pat-cols, 4), minmax(0, 1fr)); margin-bottom: 1.75rem; border-top: 1px solid var(--line-dark); }
.pat-tab {
  position: relative; display: grid; align-content: start; gap: .5rem; padding: 1.1rem 1.25rem 1.2rem 0;
  border: 0; background: none; color: inherit; font: inherit; text-align: left; cursor: pointer;
}
.pat-tab + .pat-tab { padding-left: 1.25rem; border-left: 1px solid var(--line-dark); }
.pat-tab::before {
  content: ""; position: absolute; left: 0; right: 0; top: -1px; height: 2px; background: var(--pat-accent);
  transform: scaleX(0); transform-origin: left; transition: transform 350ms var(--ease-out, ease-out);
}
.pat-tab[aria-selected="true"]::before { transform: scaleX(1); }
.pat-tab-n { font-size: .85rem; letter-spacing: .06em; color: var(--on-dark-faint); font-variant-numeric: tabular-nums; }
.pat-tab b { font-size: 1.1rem; font-weight: 500; letter-spacing: -0.02em; line-height: 1.25; color: var(--on-dark-muted); transition: color 200ms; }
.pat-tab:hover b, .pat-tab[aria-selected="true"] b { color: var(--on-dark); }
.pat-tab[aria-selected="true"] .pat-tab-n { color: var(--pat-accent); }
.pat-tabs-body { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(2rem, 4vw, 3.5rem); align-items: start; }
.pat-tabs-desc { max-width: 32ch; font-size: 1.15rem; line-height: 1.5; color: var(--on-dark-muted); }
.pat-tabs-desc[hidden] { display: none; }

@media (prefers-reduced-motion: reduce) {
  .pat-row, .pat-row::before, .pat-tab::before, .pat-link svg { transition: none; }
}
@media (max-width: 960px) {
  .pat-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pat-preview, .pat-tabs-body { grid-template-columns: minmax(0, 1fr); }
  .pat-tabs-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pat-tab:nth-child(odd) { padding-left: 0; border-left: 0; }
  .pat-tab:nth-child(n + 3) { border-top: 1px solid var(--line-dark); }
}
@media (max-width: 560px) {
  .pat-cards { grid-template-columns: minmax(0, 1fr); }
  .pat-card { min-height: 0; }
  .pat-tabs-row { grid-template-columns: minmax(0, 1fr); }
  .pat-tab { padding-left: 0; border-left: 0; }
  .pat-tab + .pat-tab { padding-left: 0; border-left: 0; border-top: 1px solid var(--line-dark); }
}