/* Peptigen Labs: one flat system. Tokens first; no gradients, no effects, no inline styles (CSP). */
:root {
  --bg: #f7f6f2;
  --surface: #ffffff;
  --ink: #15211f;
  --muted: #55625f;
  --line: #d9d6cc;
  --accent: #0e5a54;
  --accent-ink: #ffffff;
  --alert-bg: #fbeceb;
  --alert-ink: #7a1f1a;
  --note-bg: #eef3f1;
  --radius: 6px;
  --wrap: 1120px;
  --gap: 24px;
  /* category accents, applied by class (never inline) */
  --c-metabolic: #2f6fb0;
  --c-recovery: #b5651d;
  --c-longevity: #3a7d44;
  --c-cognitive: #b0344f;
  --c-endocrine: #8a6d00;
  --c-cosmetic: #b0527c;
  --c-prep: #5b6770;
  font-size: 16px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101816; --surface: #17211f; --ink: #eef2f0; --muted: #a7b4b0; --line: #2c3a37;
    --accent: #4fb3a8; --accent-ink: #06201d; --alert-bg: #3a1a18; --alert-ink: #ffd5d1; --note-bg: #1b2a27;
  }
}
*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 1rem/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
img { max-width: 100%; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); line-height: 1.15; margin: 0 0 .5em; }
h2 { font-size: 1.375rem; margin: 2em 0 .6em; }
.block h2:first-child { margin-top: 0; }
p { margin: 0 0 1em; }
.muted { color: var(--muted); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 16px; }
.wrap.narrow { max-width: 760px; }
.block { padding: 48px 0; }
.block.alt { background: var(--surface); border-block: 1px solid var(--line); }
.hero { padding: 72px 0 56px; }
.lede { font-size: 1.125rem; color: var(--muted); max-width: 60ch; }

.site-header { background: var(--surface); border-bottom: 1px solid var(--line); }
.bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 60px; flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--ink); text-decoration: none; }
.nav { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.nav a { color: var(--ink); text-decoration: none; padding: 8px 0; background: linear-gradient(currentColor, currentColor) 0 100% / 0 2px no-repeat; transition: background-size .2s; }
.nav a:hover { background-size: 100% 2px; }
.site-footer { border-top: 1px solid var(--line); padding: 32px 0; font-size: .9375rem; color: var(--muted); }

.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); border: 1px solid var(--accent); border-radius: var(--radius); padding: 10px 18px; font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; transition: transform .12s, opacity .12s; }
.btn:hover { opacity: .9; transform: translateY(-1px); }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: transparent; color: var(--accent); }
.btn.small { padding: 4px 10px; font-size: .875rem; }
.link { background: none; border: 0; padding: 0; font: inherit; color: var(--accent); text-decoration: underline; cursor: pointer; }
form.inline { display: inline; }

.grid { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--gap); grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
.card { display: flex; flex-direction: column; gap: 6px; height: 100%; padding: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); color: var(--ink); text-decoration: none; border-top: 4px solid var(--cat, var(--line)); transition: transform .15s; }
a.card:hover { transform: translateY(-2px); }
.card-title { font-weight: 600; font-size: 1.0625rem; }
.chip { font-size: .8125rem; color: var(--muted); }
.stat { font-size: 2rem; font-weight: 700; }
.cat-metabolic { --cat: var(--c-metabolic); } .cat-recovery { --cat: var(--c-recovery); } .cat-longevity { --cat: var(--c-longevity); }
.cat-cognitive { --cat: var(--c-cognitive); } .cat-endocrine { --cat: var(--c-endocrine); } .cat-cosmetic { --cat: var(--c-cosmetic); } .cat-prep { --cat: var(--c-prep); }

.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 24px; }
.filters a { border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; text-decoration: none; color: var(--ink); background: var(--surface); }
.filters a[aria-current="page"] { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.search { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 0 0 24px; }
.search label { font-weight: 600; }
input[type="search"], input[type="text"], input[type="email"], input[type="password"], input[type="number"] { font: inherit; padding: 9px 12px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); color: var(--ink); }
input[type="number"] { width: 5.5rem; }
.stack { display: grid; gap: 16px; max-width: 420px; }
.stack label { display: grid; gap: 6px; font-weight: 600; }

.crumbs { color: var(--muted); font-size: .9375rem; }
.notice { background: var(--note-bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; }
.alert { background: var(--alert-bg); color: var(--alert-ink); border-radius: var(--radius); padding: 12px 14px; }
.buy { display: grid; gap: 16px; margin: 24px 0; }
fieldset { border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 16px; margin: 0; }
legend { font-weight: 600; padding: 0 6px; }
.opt { display: inline-flex; align-items: center; gap: 8px; margin-right: 20px; min-height: 44px; cursor: pointer; }
.qty { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 6px 20px; }
.facts dt { font-weight: 600; } .facts dd { margin: 0; }

.table { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); font-size: .9375rem; }
.table th, .table td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.table .num { text-align: right; white-space: nowrap; }
.pager { display: flex; gap: 20px; align-items: center; margin-top: 20px; }

@media (max-width: 640px) {
  .block { padding: 32px 0; } .hero { padding: 40px 0 32px; }
  .table { display: block; overflow-x: auto; }
  .btn { width: 100%; text-align: center; }
  .nav { gap: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
  a.card:hover, .btn:hover { transform: none; }
}

/* Checkout, orders and admin extras */
textarea, select { font: inherit; padding: 9px 12px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); color: var(--ink); width: 100%; }
input[type="file"] { font: inherit; }
.stack.wide { max-width: 560px; }
.stack input[type="text"], .stack input[type="email"], .stack input[type="number"] { width: 100%; }
.opt.check { align-items: flex-start; margin-right: 0; }
.alert ul { margin: 0; padding-left: 1.2em; }
.actions { display: grid; gap: 20px; }
.inline-form { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; }
.inline-form label { display: grid; gap: 4px; font-weight: 600; }
.flag { color: var(--alert-ink); background: var(--alert-bg); padding: 2px 6px; border-radius: var(--radius); }
.status { padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.stats .card .stat { font-variant-numeric: tabular-nums; }