:root {
  --bg: #FBF8F4;
  --surface: #FFFFFF;
  --ink: #2A2522;
  --muted: #6F6660;
  --line: #E9E2DA;
  --accent: #6B3A5B;
  --accent-soft: #F3E9EF;
  --face: #E6C3A5;
  --radius: 14px;
  --safe: #3F6E5A;  --safe-bg: #E6F0EA;
  --soft: #8A4F6B;  --soft-bg: #F6E8EF;
  --bold: #A0521D;  --bold-bg: #FBECE0;
  --elegant: #6B5A1E; --elegant-bg: #F4EED9;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #171412; --surface: #211D1A; --ink: #F1EBE5; --muted: #A89E96; --line: #362F2A;
    --accent: #D9A3C4; --accent-soft: #2E2229;
    --safe: #8CC7AA; --safe-bg: #1F2C25; --soft: #E0A6C2; --soft-bg: #2E2229;
    --bold: #F0A66E; --bold-bg: #33241A; --elegant: #D9C27A; --elegant-bg: #2D2917;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #171412; --surface: #211D1A; --ink: #F1EBE5; --muted: #A89E96; --line: #362F2A;
  --accent: #D9A3C4; --accent-soft: #2E2229;
  --safe: #8CC7AA; --safe-bg: #1F2C25; --soft: #E0A6C2; --soft-bg: #2E2229;
  --bold: #F0A66E; --bold-bg: #33241A; --elegant: #D9C27A; --elegant-bg: #2D2917;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.6 "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: var(--accent); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }

/* header */
.site-head { border-bottom: 1px solid var(--line); background: var(--surface); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.logo { font-weight: 800; font-size: 1.15rem; color: var(--ink); text-decoration: none; letter-spacing: -.01em; }
.logo span { color: var(--accent); }
.site-head nav { display: flex; gap: 16px; flex-wrap: wrap; justify-content: flex-end; }
.site-head nav a { color: var(--muted); text-decoration: none; font-weight: 600; font-size: .95rem; }
.site-head nav a:hover { color: var(--ink); }

/* breadcrumb */
.crumbs { font-size: .85rem; color: var(--muted); margin: 20px 0 4px; }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }

h1 { font-size: clamp(1.7rem, 4.5vw, 2.5rem); line-height: 1.15; letter-spacing: -.02em; margin: 6px 0 8px; }
h2 { font-size: 1.3rem; letter-spacing: -.01em; margin: 40px 0 12px; }
.lede { color: var(--muted); max-width: 62ch; margin: 0 0 24px; }

.simple-table { width: 100%; max-width: 640px; border-collapse: collapse; margin: 12px 0 24px; font-size: 0.95rem; }
.simple-table th, .simple-table td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; }
.simple-table th { background: var(--surface); font-weight: 700; }

/* combo layout */
.combo { display: grid; grid-template-columns: minmax(0, 380px) minmax(0, 1fr); gap: 28px; align-items: start; }
@media (max-width: 820px) { .combo { grid-template-columns: 1fr; } }

.preview {
  position: sticky; top: 16px; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px;
}
@media (max-width: 820px) { .preview { position: static; } }
.figure { display: flex; justify-content: center; background: var(--bg); border-radius: 10px; padding: 12px 0 0; }
.figure svg { width: 180px; height: auto; display: block; }
.figure svg .edge { stroke: rgba(0,0,0,.14); stroke-width: 1.2; }
.pair-names { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 16px 0 10px; }
.pair-names div { font-size: .8rem; color: var(--muted); }
.pair-names strong { display: flex; align-items: center; gap: 8px; color: var(--ink); font-size: 1rem; }
.dot { width: 16px; height: 16px; border-radius: 50%; flex: none; box-shadow: inset 0 0 0 1px rgba(0,0,0,.15); }
.score-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 6px 0 12px; }
.score { font-weight: 800; font-size: 1.4rem; }
.score small { font-size: .8rem; color: var(--muted); font-weight: 600; }
.why { margin: 0 0 12px; padding-left: 18px; color: var(--ink); font-size: .93rem; }
.why li { margin-bottom: 6px; }
.occ { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.occ span { font-size: .78rem; padding: 3px 10px; border-radius: 999px; background: var(--bg); border: 1px solid var(--line); color: var(--muted); }
.cta {
  display: block; text-align: center; background: var(--accent); color: #fff; text-decoration: none;
  padding: 12px 16px; border-radius: 10px; font-weight: 700;
}
:root[data-theme="dark"] .cta { color: #1b1418; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .cta { color: #1b1418; } }
.note { font-size: .75rem; color: var(--muted); margin: 10px 0 0; text-align: center; }

/* style badges */
.badge { font-size: .72rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; padding: 3px 9px; border-radius: 999px; }
.badge.safe { color: var(--safe); background: var(--safe-bg); }
.badge.soft { color: var(--soft); background: var(--soft-bg); }
.badge.bold { color: var(--bold); background: var(--bold-bg); }
.badge.elegant { color: var(--elegant); background: var(--elegant-bg); }

/* option list */
.group { margin-bottom: 22px; }
.group h3 { font-size: .85rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 0 0 10px; display: flex; gap: 8px; align-items: center; }
.group h3 small { text-transform: none; letter-spacing: 0; font-weight: 500; }
.opts { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 10px; }
.opt {
  display: flex; align-items: center; gap: 10px; text-align: left; width: 100%;
  background: var(--surface); border: 1.5px solid var(--line); border-radius: 12px;
  padding: 10px; cursor: pointer; font: inherit; color: var(--ink); transition: border-color .15s, transform .15s;
}
.opt:hover { border-color: var(--muted); }
.opt[aria-pressed="true"] { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.opt:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.opt .chip { width: 36px; height: 36px; border-radius: 9px; flex: none; box-shadow: inset 0 0 0 1px rgba(0,0,0,.12); }
.opt b { display: block; font-size: .95rem; line-height: 1.2; }
.opt small { color: var(--muted); font-size: .8rem; }

.avoid { display: flex; flex-wrap: wrap; gap: 10px; }
.avoid div { display: flex; gap: 8px; align-items: center; font-size: .9rem; padding: 8px 12px; border-radius: 10px; border: 1px dashed var(--line); color: var(--muted); }

.method { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; font-size: .92rem; color: var(--muted); }
.method strong { color: var(--ink); }

/* colour grid (index, related) */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; }
.card {
  display: block; text-decoration: none; color: var(--ink); background: var(--surface);
  border: 1px solid var(--line); border-radius: 12px; overflow: hidden; transition: transform .15s, border-color .15s;
}
.card:hover { transform: translateY(-2px); border-color: var(--muted); }
.card .sw { height: 64px; display: flex; }
.card .sw i { flex: 1; }
.card .sw i:first-child { flex: 2; }
.card span { display: block; padding: 8px 10px; font-weight: 600; font-size: .92rem; }

/* home */
.hero { text-align: center; padding: 56px 0 32px; }
.hero h1 { font-size: clamp(2rem, 6vw, 3.2rem); }
.search { position: relative; max-width: 520px; margin: 0 auto; }
.search input {
  width: 100%; font: inherit; font-size: 1.05rem; padding: 14px 18px; border-radius: 14px;
  border: 1.5px solid var(--line); background: var(--surface); color: var(--ink);
}
.search input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.results { position: absolute; left: 0; right: 0; top: calc(100% + 6px); background: var(--surface); border: 1px solid var(--line); border-radius: 12px; list-style: none; margin: 0; padding: 6px; text-align: left; z-index: 5; box-shadow: 0 12px 30px rgba(0,0,0,.08); }
.results:empty { display: none; }
.results a { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 8px; text-decoration: none; color: var(--ink); }
.results a:hover, .results a.active { background: var(--bg); }
.popular { margin: 18px 0 0; color: var(--muted); font-size: .9rem; }
.popular a { display: inline-flex; align-items: center; gap: 6px; margin: 4px 6px; text-decoration: none; color: var(--ink); background: var(--surface); border: 1px solid var(--line); padding: 5px 12px; border-radius: 999px; }

/* photo upload tool */
.beta-tag {
  display: inline-block; margin: 0 0 8px; padding: 4px 10px; border-radius: 999px;
  font-size: .75rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
  background: var(--bold-bg); color: var(--bold);
}
.upload-box { max-width: 420px; margin: 24px 0 32px; }
.upload-label {
  display: block; cursor: pointer; text-align: center; padding: 28px 20px;
  border: 2px dashed var(--line); border-radius: var(--radius); background: var(--surface);
}
.upload-label:hover { border-color: var(--accent); background: var(--accent-soft); }
.upload-label input { display: block; margin: 12px auto 0; font: inherit; max-width: 100%; }
.upload-preview { display: block; max-width: 100%; margin-top: 16px; border-radius: var(--radius); border: 1px solid var(--line); }
.detect-row { display: flex; gap: 20px; align-items: flex-start; flex-wrap: wrap; margin-bottom: 24px; }
.detect-swatch {
  min-width: 120px; min-height: 72px; padding: 12px; border-radius: 12px; font-weight: 700; font-size: .85rem;
  display: flex; align-items: flex-end; border: 1px solid rgba(0,0,0,.08);
}
.match-name { font-size: 1.15rem; margin: 8px 0 16px; display: flex; align-items: center; gap: 8px; }
.alt-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
.alt-pick { text-align: center; padding: 12px; }

.skin-filter { margin-bottom: 20px; padding: 14px 16px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.skin-filter-label { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 10px; }
.skin-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.skin-chip {
  font: inherit; font-size: .85rem; font-weight: 600; padding: 6px 12px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--bg); color: var(--ink); cursor: pointer;
}
.skin-chip:hover { border-color: var(--accent); }
.skin-chip.is-active { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.skin-filter-note { margin: 10px 0 0; }

.site-foot { border-top: 1px solid var(--line); margin-top: 64px; padding: 24px 0 40px; color: var(--muted); font-size: .85rem; }