/* Peptra — visual system
   Palette: cool lab neutrals + a deep teal detector trace + oxidised amber for secondary data.
   Type:    Archivo (display) / Source Sans 3 (body) / IBM Plex Mono (data, lot numbers, eyebrows).
   Layout:  a certificate-of-analysis spec sheet — hairline rules, numbered sections, tabular data. */

:root {
  --ground:    #F2F5F4;
  --surface:   #FFFFFF;
  --surface-2: #E9EEED;
  --ink:       #0D1A1B;
  --ink-mute:  #55686A;
  --ink-faint: #7D8F90;
  --rule:      #D3DDDC;
  --rule-soft: #E3EAE9;
  --trace:     #00726E;
  --trace-ink: #005A57;
  --amber:     #8F5400;
  --focus:     #00726E;
  --shadow:    0 1px 2px rgba(13, 26, 27, .05), 0 8px 24px -16px rgba(13, 26, 27, .28);

  --f-display: "Archivo", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --f-body:    "Source Sans 3", "Segoe UI", system-ui, sans-serif;
  --f-mono:    "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --gutter: 24px;
  --maxw:   1120px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --ground:    #0A1113;
    --surface:   #111A1C;
    --surface-2: #172224;
    --ink:       #E6EEEE;
    --ink-mute:  #93A5A7;
    --ink-faint: #6F8284;
    --rule:      #223033;
    --rule-soft: #1A2527;
    --trace:     #38D6C9;
    --trace-ink: #6FE7DC;
    --amber:     #E0A04A;
    --focus:     #38D6C9;
    --shadow:    0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px -16px rgba(0, 0, 0, .8);
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --ground:    #0A1113;
  --surface:   #111A1C;
  --surface-2: #172224;
  --ink:       #E6EEEE;
  --ink-mute:  #93A5A7;
  --ink-faint: #6F8284;
  --rule:      #223033;
  --rule-soft: #1A2527;
  --trace:     #38D6C9;
  --trace-ink: #6FE7DC;
  --amber:     #E0A04A;
  --focus:     #38D6C9;
  --shadow:    0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px -16px rgba(0, 0, 0, .8);
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; }

:where(a) { color: var(--trace-ink); }

:where(a, button, input, select, textarea):focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  border-radius: 2px;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- type roles ---------- */

.eyebrow {
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0;
}

.display {
  font-family: var(--f-display);
  font-weight: 700;
  letter-spacing: -.028em;
  line-height: 1.04;
  text-wrap: balance;
  margin: 0;
  font-size: clamp(38px, 6.4vw, 64px);
}

.h2 {
  font-family: var(--f-display);
  font-weight: 600;
  letter-spacing: -.018em;
  line-height: 1.12;
  text-wrap: balance;
  margin: 0;
  font-size: clamp(26px, 3.4vw, 34px);
}

.h3 {
  font-family: var(--f-display);
  font-weight: 600;
  letter-spacing: -.01em;
  margin: 0;
  font-size: 19px;
  line-height: 1.25;
}

.lede {
  font-size: clamp(17px, 1.9vw, 19px);
  color: var(--ink-mute);
  max-width: 58ch;
  margin: 0;
}

.mono { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 20;
  background: color-mix(in srgb, var(--ground) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 58px;
}

.wordmark {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -.03em;
  color: var(--ink);
  text-decoration: none;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
}

.wordmark .mark {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--trace);
  translate: 0 -1px;
  flex: none;
}

.chip {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 3px 9px;
  white-space: nowrap;
}

.site-header .spacer { flex: 1 1 auto; }

/* ---------- buttons ---------- */

.btn {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -.005em;
  border-radius: 3px;
  padding: 11px 18px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  line-height: 1;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}

.btn-primary { background: var(--trace); color: #FFFFFF; }
:root[data-theme="dark"] .btn-primary,
.btn-primary { }
.btn-primary:hover { background: var(--trace-ink); }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .btn-primary { color: #06191A; }
}
:root[data-theme="dark"] .btn-primary { color: #06191A; }

.btn-quiet {
  background: transparent;
  color: var(--ink);
  border-color: var(--rule);
}
.btn-quiet:hover { border-color: var(--ink-faint); }

.btn-sm { padding: 8px 14px; font-size: 14px; }

/* ---------- hero ---------- */

.hero { padding-block: clamp(40px, 7vw, 76px) clamp(36px, 5vw, 60px); }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.hero-copy { display: flex; flex-direction: column; gap: 20px; }

.hero .display em {
  font-style: normal;
  color: var(--trace-ink);
}

@media (max-width: 880px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- chromatogram card ---------- */

.chroma-card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 4px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.chroma-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 14px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--rule-soft);
}

.chroma-head .title {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: -.005em;
  margin: 0;
}

.chroma-head .lot {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: .04em;
  margin-left: auto;
}

.chroma-canvas-box {
  position: relative;
  aspect-ratio: 16 / 9;
  max-width: 100%;
  min-height: 190px;
}

.chroma-canvas-box canvas { display: block; width: 100%; height: 100%; }

.chroma-readout {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 26px;
  padding: 12px 16px;
  border-top: 1px solid var(--rule-soft);
  background: var(--surface-2);
}

.readout-item { display: flex; flex-direction: column; gap: 1px; }

.readout-item .k {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.readout-item .v {
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
}

.readout-item .v.hero-figure { color: var(--trace-ink); font-size: 17px; }

/* integration table under the trace */

.integration {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
}

.integration caption {
  text-align: left;
  padding: 11px 16px 7px;
  font-size: 10px;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.integration th,
.integration td {
  text-align: right;
  padding: 4px 16px;
  border-top: 1px solid var(--rule-soft);
  color: var(--ink-mute);
  font-weight: 400;
}

.integration th:first-child,
.integration td:first-child { text-align: left; }

.integration thead th {
  color: var(--ink-faint);
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
  border-top: 0;
}

.integration tr.main td { color: var(--ink); font-weight: 500; }

/* ---------- sections ---------- */

.section { border-top: 1px solid var(--rule); padding-block: clamp(40px, 5.5vw, 68px); }

.section-head {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 8px 24px;
  align-items: start;
  margin-bottom: clamp(24px, 3vw, 36px);
}

.section-head .eyebrow { padding-top: 7px; }
.section-head .head-copy { display: flex; flex-direction: column; gap: 12px; }

@media (max-width: 720px) {
  .section-head { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .section-head .eyebrow { padding-top: 0; }
}

/* ---------- ruled rows (not cards) ---------- */

.rule-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule-soft);
}

.rule-row {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 6px 24px;
  padding-block: 20px;
  border-bottom: 1px solid var(--rule-soft);
}

.rule-row .idx {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ink-faint);
  padding-top: 4px;
}

.rule-row .body { display: flex; flex-direction: column; gap: 7px; }
.rule-row p { margin: 0; color: var(--ink-mute); max-width: 68ch; }

@media (max-width: 720px) {
  .rule-row { grid-template-columns: minmax(0, 1fr); }
  .rule-row .idx { padding-top: 0; }
}

/* ---------- spec table ---------- */

/* position: relative matters. The visually-hidden .vh spans inside the
   catalogue are absolutely positioned; without a positioned ancestor their
   containing block is the page, so they escape this container's clipping
   and widen the whole document at phone width. */
.table-scroll { overflow-x: auto; position: relative; }

.spec-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 15px;
}

.spec-table caption { text-align: left; padding-bottom: 12px; color: var(--ink-mute); font-size: 15px; }

.spec-table th,
.spec-table td {
  text-align: left;
  padding: 13px 16px 13px 0;
  border-bottom: 1px solid var(--rule-soft);
  vertical-align: top;
}

.spec-table thead th {
  font-family: var(--f-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--ink-faint);
  border-bottom-color: var(--rule);
  padding-top: 0;
}

.spec-table tbody th {
  font-family: var(--f-body);
  font-weight: 600;
  color: var(--ink);
  width: 34%;
}

.spec-table td { color: var(--ink-mute); }
.spec-table td.num { font-family: var(--f-mono); font-variant-numeric: tabular-nums; color: var(--ink); white-space: nowrap; }

/* ---------- catalog ---------- */

.catalog {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 15px;
}

.catalog th,
.catalog td {
  text-align: left;
  padding: 12px 18px 12px 0;
  border-bottom: 1px solid var(--rule-soft);
}

.catalog thead th {
  font-family: var(--f-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--ink-faint);
  border-bottom-color: var(--rule);
  padding-top: 0;
}

.catalog tbody th { font-weight: 600; color: var(--ink); }
.catalog td { color: var(--ink-mute); }
.catalog td.num { font-family: var(--f-mono); font-variant-numeric: tabular-nums; white-space: nowrap; color: var(--ink); }
.catalog td.formula { font-family: var(--f-mono); font-size: 13px; }
.catalog td.formula sub { font-size: .78em; }

.catalog-note { margin: 14px 0 0; color: var(--ink-faint); font-size: 14px; }

/* ---------- contact ---------- */

.contact-block { display: flex; flex-direction: column; gap: 8px; }

.contact-label {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0;
}

.note {
  margin: 0;
  font-size: 14px;
  color: var(--ink-mute);
  line-height: 1.5;
  max-width: 52ch;
}

.contact-panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
}

.contact-card {
  background: var(--surface);
  padding: clamp(20px, 3vw, 28px);
  display: flex;
  flex-direction: column;
  gap: 10px;
}


/* ---------- compliance ---------- */

.compliance {
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: clamp(20px, 3vw, 28px);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.compliance p {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--ink-mute);
  max-width: 82ch;
}

.compliance p strong { color: var(--ink); font-weight: 600; }

/* ---------- footer ---------- */

.site-footer { border-top: 1px solid var(--rule); padding-block: 32px 44px; }

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
  align-items: baseline;
}

.site-footer .legal { font-family: var(--f-mono); font-size: 11.5px; color: var(--ink-faint); margin: 0; }
.site-footer .spacer { flex: 1 1 auto; }

.copy-line { display: inline-flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.copy-line .addr { font-family: var(--f-mono); font-size: 12px; color: var(--ink-mute); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

/* ---------- narrow-width corrections ---------- */

.site-header .btn { white-space: nowrap; }

@media (max-width: 620px) {
  .site-header .chip { display: none; }
  .chroma-head .lot { margin-left: 0; width: 100%; }
}

/* Two header links plus the wordmark do not fit a 320px screen. Contact is
   the one that has to survive; the catalogue is a scroll away regardless. */
@media (max-width: 480px) {
  .site-header .nav-secondary { display: none; }
}

/* Set as a class rather than a style attribute, so the page carries no
   inline styles for a host's Content-Security-Policy to refuse. */
figure.chroma-card { margin: 0; }

/* ---------- catalogue controls and stock ---------- */

.vh {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.cat-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 14px 18px;
  padding-bottom: 18px;
}

.cat-field { display: flex; flex-direction: column; gap: 6px; }

.cat-field label {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.cat-field input,
.cat-field select {
  font-family: var(--f-body);
  font-size: 15px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 9px 11px;
  min-width: 0;
}

.cat-field input { width: min(100%, 270px); }
.cat-field input:focus, .cat-field select:focus { border-color: var(--focus); }

.cat-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  color: var(--ink-mute);
  padding-bottom: 9px;
  cursor: pointer;
}

.cat-toggle input { accent-color: var(--trace); width: 16px; height: 16px; }

.cat-count { margin: 0 0 9px; margin-left: auto; font-size: 12px; color: var(--ink-faint); }

@media (max-width: 620px) {
  .cat-count { margin-left: 0; }
}

/* warehouse chips */

.cat-stock { white-space: nowrap; }

.wh {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .06em;
  padding: 2px 5px;
  border-radius: 2px;
  border: 1px solid var(--rule);
  color: var(--ink-faint);
  margin-right: 3px;
  min-width: 26px;
  text-align: center;
}

.wh-in {
  border-color: color-mix(in srgb, var(--trace) 55%, var(--rule));
  color: var(--trace-ink);
  background: color-mix(in srgb, var(--trace) 9%, transparent);
}

.cat-oos th[scope="row"], .cat-oos td { opacity: .55; }
.cat-format { font-size: 12.5px; color: var(--ink-mute); }
.cat-unit { color: var(--ink-mute); }

.cat-flag {
  font-family: var(--f-mono);
  font-size: 10px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  width: 15px;
  height: 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--amber);
  text-decoration: none;
  cursor: help;
  translate: 0 -1px;
}

.cat-empty {
  margin: 0;
  padding: 24px 0;
  color: var(--ink-mute);
  font-family: var(--f-mono);
  font-size: 14px;
}

.catalog tbody th[scope="row"] { font-family: var(--f-mono); font-size: 12.5px; white-space: nowrap; }