/* Typefaces — chrome is deliberately quiet so the specimens carry the page. */
:root {
  --ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --bg: #fafaf8; --fg: #16161a; --fg2: #5a5a62; --fg3: #8b8b94;
  --line: #e4e4e0; --panel: #ffffff; --panel2: #f2f2ee; --accent: #1d4ed8;
  --radius: 14px; --gutter: 16px; --max: 1240px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111114; --fg: #ececf0; --fg2: #a6a6b0; --fg3: #6f6f78;
    --line: #26262c; --panel: #18181c; --panel2: #1f1f25; --accent: #7aa2ff;

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 15px/1.5 var(--ui); }
a { color: inherit; text-decoration: none; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }

/* Header */
.top { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 20px; height: 54px; }
.brand { font-weight: 700; letter-spacing: -0.01em; font-size: 17px; display: flex; align-items: center; gap: 8px; }
.brand svg { width: 22px; height: 22px; }
.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a { padding: 6px 10px; border-radius: 8px; color: var(--fg2); font-weight: 500; font-size: 14px; }
.nav a:hover, .nav a[aria-current] { background: var(--panel2); color: var(--fg); }

/* Filters */
.tools { padding: 22px 0 8px; display: flex; flex-direction: column; gap: 12px; }
.search { display: flex; gap: 10px; align-items: center; position: relative; }
.search input { flex: 1; max-width: 520px; padding: 11px 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); color: var(--fg); font: 15px var(--ui); }
.search input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.count { color: var(--fg3); font-size: 13px; font-variant-numeric: tabular-nums; white-space: nowrap; }
.suggest { position: absolute; top: 46px; left: 0; width: min(520px, 100%); background: var(--panel); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 10px 30px rgba(0,0,0,0.15); z-index: 30; overflow: hidden; }
.suggest button { display: flex; justify-content: space-between; width: 100%; padding: 9px 14px; border: 0; background: none; color: var(--fg); font: 14px var(--ui); text-align: left; cursor: pointer; }
.suggest button:hover, .suggest button[aria-selected="true"] { background: var(--panel2); }
.suggest button small { color: var(--fg3); }
.themes { display: flex; flex-direction: column; gap: 8px; }
.gtabs { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
.gtab { padding: 6px 12px; border: 0; border-bottom: 2px solid transparent; background: none; color: var(--fg2); font: 600 13px/1.2 var(--ui); cursor: pointer; }
.gtab:hover { color: var(--fg); }
.gtab[aria-pressed="true"] { color: var(--fg); border-bottom-color: var(--fg); }
.themes__chips { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.themes__name { font: 600 11px/1 var(--ui); letter-spacing: 0.06em; text-transform: uppercase; color: var(--fg3); margin-right: 4px; }
.chip { padding: 5px 11px; border: 1px solid var(--line); border-radius: 999px; background: var(--panel); color: var(--fg2); font: 500 12.5px/1.2 var(--ui); cursor: pointer; }
.chip:hover { border-color: var(--fg3); color: var(--fg); }
.chip[aria-pressed="true"] { background: var(--fg); border-color: var(--fg); color: var(--bg); }
.chip small { color: inherit; opacity: 0.6; margin-left: 4px; }
.bar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.dd { position: relative; }
.dd__btn { display: flex; align-items: center; gap: 6px; padding: 7px 10px 7px 12px; border: 1px solid var(--line); border-radius: 9px; background: var(--panel); color: var(--fg2); font: 500 13px var(--ui); cursor: pointer; }
.dd__btn:hover { border-color: var(--fg3); color: var(--fg); }
.dd__btn[data-on="1"] { border-color: var(--fg); color: var(--fg); }
.dd__btn b { font-weight: 600; color: var(--fg); }
.dd__btn svg { width: 12px; height: 12px; opacity: 0.6; }
.dd__pop { position: absolute; top: 40px; left: 0; min-width: 220px; max-height: 340px; overflow: auto; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 10px 30px rgba(0,0,0,0.15); z-index: 30; padding: 6px; }
.dd__pop label { display: flex; align-items: center; gap: 8px; padding: 7px 8px; border-radius: 6px; font: 13.5px var(--ui); color: var(--fg); cursor: pointer; }
.dd__pop label:hover { background: var(--panel2); }
.dd__pop label small { margin-left: auto; color: var(--fg3); font-variant-numeric: tabular-nums; }
.dd__pop label.off { color: var(--fg3); }
.dd__pop input { margin: 0; accent-color: var(--fg); }
.active { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.active:empty { display: none; }
.active .chip { background: var(--fg); border-color: var(--fg); color: var(--bg); padding-right: 8px; }
.active .chip::after { content: " ×"; opacity: 0.7; }
.clear { background: none; border: 0; color: var(--accent); font: 500 13px var(--ui); cursor: pointer; padding: 4px 6px; }
@media (max-width: 560px) { .dd__pop { left: auto; right: 0; } }

/* Card grid */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 16px; padding: 12px 0 48px; }
@media (max-width: 420px) { .grid { grid-template-columns: 1fr; } }
.facet select { padding: 6px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--fg); font: 500 12.5px var(--ui); }
.chip small { color: var(--fg3); margin-left: 5px; font-weight: 500; }
.more-wrap { display: flex; justify-content: center; padding: 0 0 48px; }
.more-btn { padding: 11px 18px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); color: var(--fg); font: 600 14px var(--ui); cursor: pointer; }
.more-btn small { color: var(--fg3); font-weight: 500; margin-left: 8px; }
.more-btn:hover { border-color: var(--fg3); }

/* Detail */
.detail { padding: 22px 0 64px; }
.crumbs { font-size: 13px; color: var(--fg3); margin-bottom: 14px; }

/* Pattern cards: the pattern is the card background; text sits on it or on a plate. */
.pcard { display: block; color: var(--pfg); border: 1px solid var(--pline); border-radius: var(--radius); min-height: 250px; position: relative; overflow: hidden; transition: transform .15s ease, box-shadow .15s ease; display: flex; align-items: flex-end; }
.pcard:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(0,0,0,0.14); }
.pcard__text { padding: 22px 24px 20px; width: 100%; }
.pcard--plate .pcard__text { background: var(--pbg); margin: 18px; width: auto; border-radius: 10px; padding: 18px 20px 16px; box-shadow: 0 2px 12px rgba(0,0,0,0.08); }
.pcard--none .pcard__text { background: linear-gradient(to top, var(--pbg) 55%, transparent); padding-top: 40px; }
.pcard__kicker { font: 500 11px/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--pmuted); margin: 0 0 12px; }
.pcard__head { font-size: 34px; line-height: 1.02; margin: 0 0 8px; overflow-wrap: anywhere; }
.pcard__body { font-size: 14px; line-height: 1.5; margin: 0; max-width: 34em; }
.pcard__tags { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 6px; }
.pcard__tag { font: 500 10.5px/1 var(--ui); padding: 4px 8px; border-radius: 999px; border: 1px solid var(--pline); color: var(--pmuted); background: color-mix(in srgb, var(--pbg) 70%, transparent); }
.pcard--hero { min-height: 340px; }
.pcard--hero .pcard__text { padding: clamp(26px, 5vw, 56px); }
.pcard--hero .pcard__head { font-size: clamp(40px, 7vw, 84px); }
.pcard--hero .pcard__body { font-size: clamp(15px, 1.5vw, 19px); max-width: 36em; }
.swatch { position: relative; border-radius: 10px; border: 1px solid var(--line); min-height: 110px; overflow: hidden; }
.swatch__label { position: absolute; left: 8px; bottom: 6px; font: 500 10.5px/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--pfg); background: var(--pbg); padding: 4px 6px; border-radius: 6px; opacity: .9; }

/* Detail */
.detail { padding: 22px 0 64px; }
.crumbs { font-size: 13px; color: var(--fg3); margin-bottom: 14px; }
.crumbs a { color: var(--fg2); }
.section { margin-top: 40px; }
.section__title { font: 600 11.5px/1 var(--ui); letter-spacing: 0.08em; text-transform: uppercase; color: var(--fg3); margin: 0 0 14px; display: flex; align-items: baseline; gap: 10px; }
.section__title span { font-weight: 400; letter-spacing: 0; text-transform: none; color: var(--fg3); }
.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.panel h3 { margin: 0 0 4px; font-size: 20px; font-weight: 600; }
.panel .note { color: var(--fg2); font-size: 14.5px; margin: 0 0 12px; line-height: 1.55; }
.prose { font-size: 17px; line-height: 1.6; max-width: 62ch; }
.prose p { margin: 0 0 12px; }
.badge { display: inline-block; font: 500 12px/1 var(--ui); padding: 5px 10px; border-radius: 999px; background: var(--panel2); color: var(--fg2); margin-right: 6px; }
.badge--src { background: transparent; border: 1px solid var(--line); }
.meta { display: flex; flex-wrap: wrap; gap: 6px; margin: 14px 0 0; }
pre.snippet { background: var(--panel2); border: 1px solid var(--line); border-radius: 10px; padding: 16px; font: 12.5px/1.6 var(--mono); overflow: auto; position: relative; margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.copy { position: absolute; top: 10px; right: 10px; font: 500 12px var(--ui); padding: 5px 10px; border-radius: 8px; border: 1px solid var(--line); background: var(--panel); color: var(--fg2); cursor: pointer; }
.controls { display: flex; flex-wrap: wrap; gap: 14px 22px; align-items: center; margin: 14px 0 0; font-size: 13.5px; color: var(--fg2); }
.controls label { display: flex; align-items: center; gap: 8px; }
.controls select, .controls input[type=range] { accent-color: var(--fg); }
.controls select { padding: 6px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--fg); font: 500 13px var(--ui); }
.strip { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.strip .swatch { cursor: pointer; }
.strip .swatch[aria-pressed="true"] { outline: 2px solid var(--fg); outline-offset: 2px; }
.siblings { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; }
.sib { display: block; border-radius: 10px; border: 1px solid var(--line); min-height: 120px; position: relative; overflow: hidden; }
.sib b { position: absolute; left: 10px; bottom: 8px; font: 600 12px/1.2 var(--ui); color: var(--pfg); background: var(--pbg); padding: 5px 8px; border-radius: 6px; }
.pager { display: flex; justify-content: space-between; margin-top: 48px; font-size: 14px; }
.pager a { color: var(--accent); }
.hero-pat { border-radius: var(--radius); border: 1px solid var(--line); min-height: 380px; position: relative; overflow: hidden; display: flex; align-items: flex-end; }
.hero-pat .pcard__text { padding: clamp(24px, 4vw, 48px); }
.hero-pat .pcard__head { font-size: clamp(38px, 6vw, 80px); }
.hero-pat.pcard--plate .pcard__text { background: var(--pbg); margin: 22px; width: auto; border-radius: 12px; }
.hero-pat.pcard--none .pcard__text { background: linear-gradient(to top, var(--pbg) 55%, transparent); padding-top: 60px; }

/* Guide */
.guide { padding: 30px 0 80px; max-width: 720px; }
.guide h1 { font-size: 40px; line-height: 1.05; letter-spacing: -0.02em; margin: 0 0 8px; }
.guide .lede { font-size: 19px; color: var(--fg2); margin: 0 0 30px; }
.guide h2 { font-size: 24px; margin: 44px 0 10px; letter-spacing: -0.01em; }
.guide p, .guide li { font-size: 16.5px; line-height: 1.65; }
.guide .ex { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 0; }
.guide .ex a { font-size: 13.5px; padding: 6px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--accent); }
.guide .toc { list-style: none; padding: 0; margin: 0 0 20px; display: grid; grid-template-columns: 1fr 1fr; gap: 4px 20px; }
.guide .toc a { color: var(--fg2); font-size: 15px; }
.guide .draft { font-size: 13px; color: var(--fg3); border: 1px dashed var(--line); padding: 8px 12px; border-radius: 8px; }
.guide .band { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 8px; margin: 12px 0 6px; }
.guide .band .swatch { min-height: 80px; }

footer { border-top: 1px solid var(--line); padding: 20px 0 40px; color: var(--fg3); font-size: 13px; }
.empty { padding: 60px 0; color: var(--fg3); text-align: center; }
@media (max-width: 560px) { .nav a[href^="https"] { display: none; } .nav a { padding: 6px 8px; } }

/* Motion */
.flow { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; display: block; }
.pcard__text { position: relative; z-index: 1; }
.swatch__label, .sib b { z-index: 1; }
@media (prefers-reduced-motion: reduce) { .anim { animation: none !important; } }
.paused .anim { animation-play-state: paused !important; }
.motionline { display: inline-flex; align-items: center; gap: 6px; }
.btn-sm { padding: 6px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--fg); font: 600 13px var(--ui); cursor: pointer; }