/* Peptides Info Center — shared stylesheet (direction-agnostic, logical properties only)
   Cool, modern, light-only. Accent sampled from the logo; category colours are signal, not decoration. */

:root {
  color-scheme: light;

  --bg: #f4f7f9;
  --bg-alt: #e9eff4;
  --surface: #ffffff;
  --ink: #0c1a27;
  --ink-soft: #2c4256;
  --muted: #6b8299;
  --line: #dde5ec;
  --line-soft: #eaf0f5;

  /* Sampled from the logo: the vial runs cyan-blue (hue ~205) through blue
     (~218) into violet (~260). The accent is the blue mid-point; the violet
     is kept as its gradient partner. */
  --accent: #2563eb;
  --accent-deep: #1d4ed8;
  --accent-soft: #eef3ff;
  --accent-line: #c6d9fe;
  --brand-violet: #7c3aed;

  --radius: 16px;
  --radius-sm: 10px;
  --maxw: 1120px;

  --shadow-sm: 0 1px 2px rgba(12, 26, 39, .04), 0 2px 6px -2px rgba(12, 26, 39, .06);
  --shadow-md: 0 4px 14px -6px rgba(12, 26, 39, .12), 0 18px 40px -20px rgba(12, 26, 39, .22);

  --cat-metabolic: #0891b2;
  --cat-recovery: #0d9488;
  --cat-gh: #7c3aed;
  --cat-skin: #d97706;
  --cat-cognitive: #db2777;
  --cat-longevity: #65a30d;

  --font: 'Heebo', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
}

html[lang="en"] { --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif; }

* { box-sizing: border-box; }
html { scrollbar-gutter: stable; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16.5px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}
html[lang="en"] body { line-height: 1.65; }

h1, h2, h3 { margin: 0 0 .5em; line-height: 1.24; text-wrap: balance; letter-spacing: -0.018em; }
h1 { font-size: clamp(2.05rem, 1.4rem + 2.6vw, 3.1rem); font-weight: 800; letter-spacing: -0.032em; }
h2 { font-size: clamp(1.35rem, 1.12rem + 1vw, 1.7rem); font-weight: 700; }
h3 { font-size: 1.1rem; font-weight: 700; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }
a { color: var(--accent-deep); text-underline-offset: 3px; }

.wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: 22px; }
.num { unicode-bidi: isolate; font-variant-numeric: tabular-nums; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; inset-block-start: 0; z-index: 50;
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(1.6) blur(12px);
  border-block-end: 1px solid var(--line);
}
.header-row { display: flex; align-items: center; gap: 18px; min-height: 72px; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; color: var(--ink); white-space: nowrap; }
.brand .mark { block-size: 40px; inline-size: auto; flex: none; }

.nav { display: flex; gap: 2px; margin-inline-start: auto; align-items: center; }
.nav a {
  position: relative; text-decoration: none; color: var(--ink-soft); font-size: .95rem; font-weight: 500;
  padding: 9px 14px; border-radius: 9px; white-space: nowrap;
}
.nav a:hover { background: var(--bg-alt); color: var(--ink); }
.nav a.active { color: var(--accent-deep); background: var(--accent-soft); font-weight: 600; }

.lang-btn {
  margin-inline-start: 10px; text-decoration: none; font-weight: 600; font-size: .87rem;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink-soft);
  padding: 8px 16px; border-radius: 999px; white-space: nowrap; box-shadow: var(--shadow-sm);
}
.lang-btn:hover { border-color: var(--accent); color: var(--accent-deep); }

@media (max-width: 760px) {
  .header-row { flex-wrap: wrap; padding-block: 12px; gap: 10px; min-height: 0; }
  .nav { inline-size: 100%; order: 3; margin-inline-start: 0; overflow-x: auto; }
  .lang-btn { margin-inline-start: auto; }
}

/* ---------- Hero ---------- */
.hero {
  padding-block: 74px 48px;
  background:
    radial-gradient(900px 380px at 82% -12%, rgba(37, 99, 235, .15), transparent 62%),
    radial-gradient(760px 340px at 12% -8%, rgba(124, 58, 237, .12), transparent 58%),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
  border-block-end: 1px solid var(--line);
}
/* Home hero: copy and lockup side by side, the lockup sitting in its own glow */
.hero-home { padding-block: 60px 56px; }
.hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: 56px; align-items: center;
}
.hero-copy h1 { margin-block-end: .45em; }
.hero-copy .lead { max-inline-size: 48ch; }
.hero-art { position: relative; display: grid; place-items: center; }
.hero-art::before {
  content: ""; position: absolute; z-index: 0;
  inline-size: 92%; aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle,
    rgba(37, 99, 235, .20) 0%, rgba(124, 58, 237, .13) 45%, transparent 70%);
}
.hero-logo { position: relative; z-index: 1; inline-size: 100%; max-inline-size: 430px; block-size: auto; }

@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero-art { order: -1; justify-items: start; }
  .hero-art::before { inline-size: 340px; }
  .hero-logo { max-inline-size: 320px; }
}

.hero .eyebrow {
  display: inline-block; color: var(--accent-deep); font-weight: 700; font-size: .78rem;
  letter-spacing: .15em; text-transform: uppercase; margin-block-end: 16px;
  background: var(--accent-soft); border: 1px solid var(--accent-line);
  padding: 5px 13px; border-radius: 999px;
}
.hero p.lead { font-size: 1.15rem; color: var(--ink-soft); max-inline-size: 62ch; margin-block-end: 0; }

/* ---------- Controls ---------- */
.controls { padding-block: 30px 6px; }
.search-box { position: relative; margin-block-end: 18px; max-inline-size: 540px; }
.search-box input {
  inline-size: 100%; font: inherit; font-size: 1rem; color: var(--ink);
  padding-block: 14px; padding-inline: 48px 16px;
  border: 1px solid var(--line); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow-sm);
}
.search-box input::placeholder { color: var(--muted); }
.search-box input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.search-box svg { position: absolute; inset-inline-start: 17px; inset-block-start: 50%; transform: translateY(-50%); color: var(--muted); pointer-events: none; }

/* One line, always — the row scrolls sideways rather than wrapping. */
.chips {
  display: flex; flex-wrap: nowrap; gap: 8px;
  overflow-x: auto; scrollbar-width: none;
  padding-block-end: 2px; margin-inline: -22px; padding-inline: 22px;
}
.chips::-webkit-scrollbar { display: none; }
.chip { flex: none; }
.chip {
  font: inherit; font-size: .91rem; font-weight: 600; cursor: pointer;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink-soft);
  padding: 8px 16px; border-radius: 999px; transition: all .14s ease;
}
.chip:hover { border-color: var(--accent); color: var(--accent-deep); }
.chip[aria-pressed="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }

/* ---------- Catalogue: one block per category ---------- */
.catalogue { padding-block: 34px 64px; }
.cat-block + .cat-block { margin-block-start: 46px; }
.cat-head {
  display: flex; align-items: center; gap: 11px;
  font-size: 1.12rem; font-weight: 700; margin: 0 0 18px; color: var(--ink);
}
.cat-head::before {
  content: ""; flex: none; inline-size: 10px; block-size: 10px;
  border-radius: 50%; background: var(--cat, var(--accent));
}
.cat-head .count {
  font-weight: 600; font-size: .78rem; color: var(--muted);
  background: var(--bg-alt); border-radius: 999px; padding: 2px 9px;
}

/* ---------- Cards ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.card {
  position: relative; overflow: hidden;
  display: flex; flex-direction: column; text-decoration: none; color: inherit;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 26px 24px; box-shadow: var(--shadow-sm);
  transition: transform .17s ease, box-shadow .17s ease, border-color .17s ease;
}
.card::before {
  content: ""; position: absolute; inset-block-start: 0; inset-inline: 0; block-size: 3px;
  background: var(--cat, var(--accent)); opacity: .85;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: color-mix(in srgb, var(--cat, var(--accent)) 40%, var(--line)); }
.card h3 { font-size: 1.3rem; font-weight: 800; margin: 0 0 20px; }
.card > .pep-icon { margin-block-end: 16px; }

/* Per-peptide icons */
.card-top { display: flex; align-items: center; gap: 12px; margin-block-end: 18px; }
.pep-icon {
  flex: none; display: grid; place-items: center;
  inline-size: 48px; block-size: 48px; border-radius: 14px;
  color: var(--cat, var(--accent));
  background: color-mix(in srgb, var(--cat, var(--accent)) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--cat, var(--accent)) 18%, transparent);
  transition: background .17s ease, transform .17s ease;
}
.pep-icon svg { inline-size: 28px; block-size: 28px; }
.card:hover .pep-icon { background: color-mix(in srgb, var(--cat, var(--accent)) 16%, transparent); transform: scale(1.05); }
.pep-icon.lg { inline-size: 66px; block-size: 66px; border-radius: 19px; }
.pep-icon.lg svg { inline-size: 38px; block-size: 38px; }
.pep-icon.sm { inline-size: 38px; block-size: 38px; border-radius: 11px; }
.pep-icon.sm svg { inline-size: 22px; block-size: 22px; }

.badge {
  align-self: center; display: inline-flex; align-items: center; gap: 7px;
  font-size: .78rem; font-weight: 700; letter-spacing: .01em;
  padding-inline: 10px 12px; padding-block: 5px; border-radius: 999px;
  background: color-mix(in srgb, var(--cat, var(--accent)) 9%, transparent);
  color: color-mix(in srgb, var(--cat, var(--accent)) 78%, #0c1a27);
}
.badge::before { content: ""; inline-size: 6px; block-size: 6px; border-radius: 50%; background: var(--cat, var(--accent)); flex: none; }

.card-facts { display: grid; gap: 10px; margin-block-start: auto; padding-block-start: 18px; border-block-start: 1px solid var(--line-soft); font-size: .95rem; }
.card-facts div { display: flex; gap: 10px; align-items: baseline; }
.card-facts .k { color: var(--muted); flex: none; min-inline-size: 5.6em; font-size: .88rem; }
.card-facts .v { color: var(--ink); font-weight: 600; }
.card .go { margin-block-start: 18px; color: var(--accent-deep); font-weight: 700; font-size: .92rem; }
.card:hover .go { text-decoration: underline; }

/* Phones: two tiles per row (~168px each). Too narrow for the desktop card's
   side-by-side key/value rows, so the tile centres its content and stacks the
   label above the value. The "view protocol" line goes — the whole tile is
   already the link. */
@media (max-width: 620px) {
  .wrap.catalogue { padding-inline: 16px; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .card {
    padding: 18px 13px 17px; border-radius: 14px;
    align-items: center; text-align: center;
  }
  .card > .pep-icon {
    inline-size: 42px; block-size: 42px; border-radius: 12px; margin-block-end: 12px;
  }
  .card > .pep-icon svg { inline-size: 25px; block-size: 25px; }
  .card h3 {
    font-size: .95rem; line-height: 1.35; letter-spacing: -0.01em; margin: 0 0 14px;
  }
  .card-facts {
    gap: 9px; padding-block-start: 13px; inline-size: 100%;
    font-size: .82rem; justify-items: center;
  }
  .card-facts div { flex-direction: column; gap: 1px; align-items: center; }
  .card-facts .k { min-inline-size: 0; font-size: .72rem; line-height: 1.3; }
  .card-facts .v { font-size: .82rem; line-height: 1.35; }
  .card .go { display: none; }
  .cat-block + .cat-block { margin-block-start: 34px; }
  .cat-head { font-size: 1.02rem; margin-block-end: 14px; }
}
.empty { text-align: center; color: var(--muted); padding-block: 60px; }

/* ---------- Peptide page ---------- */
.crumb { font-size: .9rem; color: var(--muted); padding-block: 24px 0; }
.crumb a { color: var(--muted); text-decoration: none; }
.crumb a:hover { color: var(--accent-deep); text-decoration: underline; }

.pep-head { padding-block: 16px 36px; }
.pep-head .card-top { margin-block-end: 20px; }
.pep-head .class-line { color: var(--muted); font-size: 1.06rem; max-inline-size: 58ch; margin-block: -.15em 28px; }

.spec-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(148px, 1fr)); gap: 14px; }
.spec { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 16px 18px; box-shadow: var(--shadow-sm); }
.spec .k { display: block; font-size: .79rem; color: var(--muted); }
.spec .v { display: block; font-size: 1.5rem; font-weight: 800; color: var(--ink); line-height: 1.3; margin-block-start: 3px; letter-spacing: -0.025em; }
.spec .v small { font-size: .76rem; font-weight: 500; color: var(--muted); letter-spacing: 0; }

.section { padding-block: 44px; }
.section + .section { border-block-start: 1px solid var(--line); }

/* Injection frequency — the single fact a returning visitor comes back for */
.freq-call {
  display: flex; align-items: center; gap: 20px;
  background: linear-gradient(135deg, var(--accent-soft), #f5f1ff);
  border: 1px solid var(--accent-line); border-radius: var(--radius);
  padding: 20px 24px; margin-block-end: 26px;
}
.freq-icon {
  flex: none; display: grid; place-items: center;
  inline-size: 56px; block-size: 56px; border-radius: 16px;
  background: var(--surface); border: 1px solid var(--accent-line);
  color: var(--accent);
}
.freq-icon svg { inline-size: 30px; block-size: 30px; }
.freq-label { display: block; font-size: .84rem; color: var(--muted); }
.freq-value {
  display: block; font-size: clamp(1.2rem, 1rem + .8vw, 1.5rem); font-weight: 800;
  color: var(--accent-deep); line-height: 1.3; letter-spacing: -0.02em; margin-block-start: 2px;
}
@media (max-width: 520px) { .freq-call { gap: 15px; padding: 17px 18px; } .freq-icon { inline-size: 48px; block-size: 48px; } }

table.protocol { inline-size: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; box-shadow: var(--shadow-sm); }
table.protocol th, table.protocol td { padding: 16px 20px; text-align: start; border-block-end: 1px solid var(--line-soft); }
table.protocol thead th { background: var(--bg-alt); font-size: .82rem; color: var(--muted); font-weight: 700; letter-spacing: .02em; }
table.protocol tbody tr:last-child td { border-block-end: none; }
table.protocol tbody tr:hover { background: var(--accent-soft); }
table.protocol td.units { font-weight: 800; color: var(--accent-deep); white-space: nowrap; font-size: 1.08rem; }
table.protocol td.dose { color: var(--ink-soft); white-space: nowrap; unicode-bidi: isolate; }
.table-scroll { overflow-x: auto; }

.note { color: var(--muted); font-size: .92rem; margin-block-start: 14px; max-inline-size: 70ch; }

/* ---------- Calculator ---------- */
.calc { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow-sm); }
.calc-fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 16px; align-items: end; }
.calc-fields .field-wide { grid-column: 1 / -1; max-inline-size: 340px; }
.field label { display: block; font-size: .87rem; color: var(--muted); margin-block-end: 6px; }
.field input, .field select {
  inline-size: 100%; font: inherit; font-size: 1rem; padding: 11px 13px; border-radius: 9px;
  border: 1px solid var(--line); background: var(--bg); color: var(--ink);
}
.field input:focus, .field select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.calc-out {
  margin-block-start: 22px; padding: 22px 24px; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent-soft), #f5f1ff);
  border: 1px solid var(--accent-line);
}
.calc-out .big { font-size: 2.2rem; font-weight: 800; color: var(--accent-deep); line-height: 1.2; letter-spacing: -0.03em; unicode-bidi: isolate; }
.calc-out .sub { font-size: .95rem; color: var(--ink-soft); margin-block-start: 4px; }

/* ---------- Prose ----------
   The column is capped per child rather than on .prose itself, so a wide
   block like .guide-split can break out of the reading measure. */
.prose { font-size: 1.04rem; }
.prose > * { max-inline-size: 68ch; }
.prose > .guide-split { max-inline-size: 100%; }

/* Section 1 of the guide: steps on one side, the how-to video alongside */
.guide-split {
  display: grid; grid-template-columns: minmax(320px, 1fr) minmax(0, 520px);
  gap: 34px; align-items: start; margin-block-end: 1.4em;
}
.guide-split-text > :first-child { margin-block-start: 0; }
.guide-split-text > :last-child { margin-block-end: 0; }
.guide-video { margin: 0; position: sticky; inset-block-start: 92px; }
.video-frame {
  position: relative; aspect-ratio: 16 / 9; background: #000;
  border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-sm);
}
.video-frame iframe { position: absolute; inset: 0; inline-size: 100%; block-size: 100%; border: 0; }
.video-frame.portrait { aspect-ratio: 9 / 16; }

/* Two clips side by side. The 1 : 3.1 split is what makes a 9:16 Short and a
   16:9 clip come out the same height — equal columns would not. */
.video-row {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 3.1fr);
  gap: 22px; align-items: start;
  max-inline-size: min(100%, 1020px); margin-block: 1.6em 1.4em;
}
@media (max-width: 760px) {
  .video-row { grid-template-columns: 1fr; gap: 26px; }
  .video-row .guide-video:first-child { max-inline-size: 300px; }
}
.guide-video figcaption { font-size: .88rem; color: var(--muted); margin-block-start: 11px; line-height: 1.5; }

@media (max-width: 880px) {
  .guide-split { grid-template-columns: 1fr; gap: 24px; }
  .guide-video { position: static; }
}
.prose h2 { margin-block-start: 1.8em; }
.prose ul, .prose ol { padding-inline-start: 1.4em; margin: 0 0 1.2em; }
.prose li { margin-block-end: .5em; }
.prose code { background: var(--bg-alt); padding: 2px 7px; border-radius: 6px; font-size: .92em; unicode-bidi: isolate; }

.callout {
  background: var(--surface); border: 1px solid var(--line);
  border-inline-start: 3px solid var(--accent);
  border-radius: var(--radius-sm); padding: 18px 22px; box-shadow: var(--shadow-sm);
  color: var(--ink-soft); font-size: .95rem; margin-block: 24px; max-inline-size: 72ch;
}

.related { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.related a {
  display: flex; align-items: center; gap: 13px;
  text-decoration: none; color: var(--ink); background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px 16px;
  font-weight: 700; box-shadow: var(--shadow-sm); transition: border-color .14s ease, transform .14s ease;
}
.related a:hover { border-color: color-mix(in srgb, var(--cat, var(--accent)) 55%, var(--line)); transform: translateY(-2px); }
.related a .txt { min-inline-size: 0; }
.related a .txt span { display: block; font-weight: 400; font-size: .86rem; color: var(--muted); margin-block-start: 2px; }

/* ---------- Footer ---------- */
.site-footer { border-block-start: 1px solid var(--line); background: var(--bg-alt); padding-block: 44px; margin-block-start: 30px; font-size: .92rem; color: var(--muted); }
.site-footer .cols { display: flex; flex-wrap: wrap; gap: 40px; justify-content: space-between; }
.site-footer a { color: var(--ink-soft); text-decoration: none; display: block; margin-block-end: 7px; }
.site-footer a:hover { color: var(--accent-deep); }
.site-footer .disclaimer { max-inline-size: 58ch; }
.site-footer h4 { margin: 0 0 10px; font-size: .83rem; color: var(--ink); font-weight: 700; letter-spacing: .02em; }

@media print {
  .site-header, .site-footer, .nav, .lang-btn, .controls, .related, .crumb, .calc { display: none !important; }
  body { background: #fff; font-size: 12pt; }
  .card, .spec, table.protocol { box-shadow: none; }
  a { color: inherit; text-decoration: none; }
}