/* ==========================================================================
   OmegAmino replica — PHASE 9: COA (Certificate of Analysis) library
   OWNED BY: tuju-blog. Scoped entirely under .oma-coa-* so it can never leak
   into another phase's markup.

   Colour/size tokens come from assets/css/oma-tokens.css (brand blue #1C6BBA,
   cyan CTA #84F2FE, Inter Tight, house radius 9px, shadow-free design).
   Local fallbacks are declared so this sheet still renders sanely if it is
   ever loaded before the token sheet.
   ========================================================================== */

.oma-coa-archive,
.oma-coa-single {
  --coa-blue:   var(--oma-blue, #1c6bba);
  --coa-cyan:   var(--oma-cyan, #84f2fe);
  --coa-ink:    var(--oma-black, #000);
  --coa-muted:  var(--oma-text-60, rgba(0, 0, 0, .6));
  --coa-line:   var(--oma-line-20, rgba(0, 0, 0, .2));
  --coa-hair:   var(--oma-line, rgba(0, 0, 0, .08));
  --coa-tint:   var(--oma-tint-f0f8ff, #f0f8ff);
  --coa-plate:  var(--oma-tint-f8f8f8, #f8f8f8);
  --coa-r:      var(--oma-r-9, 9px);
  --coa-r-card: var(--oma-r-12, 12px);
  --coa-doc-max: 1180px;                 /* the readable measure for a scan   */
  font-family: var(--oma-font, "Inter Tight", Arial, sans-serif);
}

.oma-coa-archive { padding: 64px 0 90px; }
.oma-coa-single  { padding: 0 0 90px; }

/* ==========================================================================
   1. ARCHIVE — intro, toolbar, grid, load more
   ========================================================================== */

.oma-coa-intro {
  max-width: 900px;
  margin: 0 0 40px;
  padding: 0;
}
.oma-coa-intro__h {
  margin: 0 0 18px;
  font-size: var(--oma-h2, 65px);
  line-height: var(--oma-h2-lh, 65px);
  font-weight: var(--oma-h2-fw, 600);
  letter-spacing: var(--oma-ls-head, -.02em);
  color: var(--coa-ink);
}
.oma-coa-intro__body,
.oma-coa-intro__body p {
  margin: 0;
  font-size: 18px;
  line-height: 1.55;
  color: var(--coa-muted);
  white-space: normal;
}

.oma-coa-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 0 0 28px;
  padding: 0 0 18px;
  border-bottom: 1px solid var(--coa-hair);
}
.oma-coa-count {
  margin: 0;
  font-size: 16px;
  color: var(--coa-muted);
  white-space: normal;
}
.oma-coa-count strong { color: var(--coa-ink); font-weight: 600; }

.oma-coa-search { flex: 0 1 340px; }
.oma-coa-search__input {
  width: 100%;
  padding: 11px 16px;
  border: 1px solid var(--coa-line);
  border-radius: var(--coa-r);
  font-family: inherit;
  font-size: 16px;
}
.oma-coa-search__input:focus {
  outline: none;
  border-color: var(--coa-blue);
  box-shadow: 0 0 0 3px rgba(28, 107, 186, .12);
}

.oma-coa-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 34px 30px;
}
.oma-coa-grid__cell.is-hidden { display: none; }

.oma-coa-empty,
.oma-coa-nomatch {
  margin: 40px 0;
  font-size: 18px;
  color: var(--coa-muted);
  white-space: normal;
}

.oma-coa-more { margin: 46px 0 0; text-align: center; }
.oma-coa-more__btn { padding: 13px 30px; font-size: 18px; }

/* ---------- card ---------- */
.oma-coa-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  border: 1px solid var(--coa-hair);
  border-radius: var(--coa-r-card);
  background: #fff;
  overflow: hidden;
  transition: border-color .2s, transform .2s;
}
.oma-coa-card:hover { border-color: rgba(28, 107, 186, .45); transform: translateY(-2px); }

.oma-coa-card__media {
  position: relative;
  display: block;
  aspect-ratio: 5 / 2;                    /* source crops the banner 1200x480 */
  background: var(--coa-plate);
  overflow: hidden;
}
.oma-coa-card__img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  transition: transform .3s;
}
.oma-coa-card:hover .oma-coa-card__img { transform: scale(1.05); }
.oma-coa-card__img--empty { background: var(--coa-plate); }

.oma-coa-card__badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 5px 11px;
  border-radius: 100px;
  background: var(--coa-blue);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0;
}

.oma-coa-card__body {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 12px;
  padding: 20px 22px 20px;
}

/* source: a small grey pill with the category name above the title */
.oma-coa-card__cat { margin: 0; white-space: normal; }
.oma-coa-card__cat a {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 100px;
  background: var(--oma-tint-ededed, #ededed);
  color: var(--coa-ink);
  font-size: 13px;
  line-height: 1.4;
  letter-spacing: 0;
  text-decoration: none;
}
.oma-coa-card__cat a:hover { background: var(--coa-tint); color: var(--coa-blue); }

/* source: the card title is the loudest thing on the card (~40px/1.1) */
.oma-coa-card__title {
  margin: 0;
  font-size: 30px;
  line-height: 1.1;
  font-weight: 600;
  letter-spacing: var(--oma-ls-head, -.02em);
}
.oma-coa-card__title a { color: var(--coa-ink); text-decoration: none; }
.oma-coa-card__title a:hover { color: var(--coa-blue); }

.oma-coa-card__product {
  margin: 0;
  font-size: 14px;
  line-height: 1.45;
  color: var(--coa-muted);
  white-space: normal;
}
.oma-coa-card__product a { color: var(--coa-blue); text-decoration: none; }
.oma-coa-card__product a:hover { text-decoration: underline; }

.oma-coa-card__rule {
  margin: auto 0 0;
  border: 0;
  border-top: 1px solid var(--coa-hair);
}
.oma-coa-card__meta {
  margin: 0;
  font-size: 13px;
  line-height: 1.4;
  color: var(--coa-muted);
  white-space: normal;
}
.oma-coa-card__sep { margin: 0 6px; }

/* ==========================================================================
   2. SINGLE COA — head block
   ========================================================================== */

.oma-coa-single__head { padding: 56px 0 0; }

.oma-coa-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  align-items: center;
  gap: 40px;
  padding: 0 0 34px;
  border-bottom: 1px solid var(--coa-hair);
}
.oma-coa-head__meta {
  margin: 0 0 14px;
  font-size: 14px;
  color: var(--coa-muted);
  white-space: normal;
}
.oma-coa-head__meta strong { color: var(--coa-ink); font-weight: 600; }
.oma-coa-head__meta a { color: var(--coa-blue); text-decoration: none; }
.oma-coa-head__sep { margin: 0 8px; }

.oma-coa-head__lede {
  margin: 0 0 20px;
  max-width: 62ch;
  font-size: 19px;
  line-height: 1.5;
  color: var(--coa-ink);
  white-space: normal;
}
.oma-coa-head__products { display: flex; flex-wrap: wrap; gap: 10px; }
.oma-coa-head__product { text-decoration: none; }

.oma-coa-head__photo {
  margin: 0;
  padding: 14px;
  border: 1px solid var(--coa-hair);
  border-radius: var(--oma-r-20, 20px);
  background: var(--coa-plate);
}
.oma-coa-head__photo img,
.oma-coa-head__photo a { display: block; width: 100%; height: auto; }

/* ==========================================================================
   3. SINGLE COA — the scan stack. This is the whole point of the page.
      Wide (up to 1180px), ordered, numbered, and every scan opens full size.
   ========================================================================== */

.oma-coa-scans { padding: 46px 0 0; }
.oma-coa-scans__wrap {
  box-sizing: border-box;
  width: 100%;
  max-width: calc(var(--coa-doc-max) + 2 * var(--oma-gutter, 65px));
  margin: 0 auto;
  padding: 0 var(--oma-gutter, 65px);
}

.oma-coa-stack {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: coa-scan;
}
.oma-coa-scan { margin: 0 0 46px; }
.oma-coa-scan:last-child { margin-bottom: 0; }

.oma-coa-scan__fig { margin: 0; }

.oma-coa-scan__link {
  position: relative;
  display: block;
  border: 1px solid var(--coa-hair);
  border-radius: var(--coa-r-card);
  background: #fff;
  overflow: hidden;
  cursor: zoom-in;
}
.oma-coa-scan__link:hover { border-color: rgba(28, 107, 186, .45); }

.oma-coa-scan__img {
  display: block;
  width: 100%;
  height: auto;
  /* Lab scans are near-monochrome; a hair of contrast makes small print read
     better on a screen without altering the document. */
  image-rendering: auto;
}

.oma-coa-scan__zoom {
  position: absolute;
  right: 14px;
  bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 100px;
  background: rgba(255, 255, 255, .92);
  border: 1px solid var(--coa-line);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity .2s, transform .2s;
  pointer-events: none;
}
.oma-coa-scan__link:hover .oma-coa-scan__zoom,
.oma-coa-scan__link:focus-visible .oma-coa-scan__zoom { opacity: 1; transform: none; }
.oma-coa-scan__zoom svg { width: 22px; height: 22px; }
.oma-coa-scan__zoom svg circle,
.oma-coa-scan__zoom svg line {
  fill: none;
  stroke: var(--coa-blue);
  stroke-width: 1.5;
  stroke-miterlimit: 10;
}

.oma-coa-scan__cap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 18px;
  padding: 12px 4px 0;
  font-size: 14px;
  color: var(--coa-muted);
}
.oma-coa-scan__no { font-weight: 600; color: var(--coa-ink); }
.oma-coa-scan__actions { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px; }
.oma-coa-scan__actions a { color: var(--coa-blue); text-decoration: none; }
.oma-coa-scan__actions a:hover { text-decoration: underline; }
.oma-coa-scan__dims { margin-left: 6px; font-variant-numeric: tabular-nums; opacity: .75; }

.oma-coa-scans__fallback { max-width: var(--coa-doc-max); margin: 0 auto; }
.oma-coa-scans__fallback img { max-width: 100%; height: auto; }

/* ==========================================================================
   4. prev / next · related · comments
   ========================================================================== */

.oma-coa-nav { padding: 60px 0 0; }
.oma-coa-nav__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  padding: 22px 0;
  border-top: 1px solid var(--coa-hair);
  border-bottom: 1px solid var(--coa-hair);
}
.oma-coa-nav__link { text-decoration: none; color: var(--coa-ink); }
.oma-coa-nav__link--next { text-align: right; }
.oma-coa-nav__label {
  display: block;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--coa-muted);
}
.oma-coa-nav__title { display: block; font-size: 17px; font-weight: 600; }
.oma-coa-nav__link:hover .oma-coa-nav__title { color: var(--coa-blue); }
.oma-coa-nav__all {
  padding: 9px 18px;
  border: 1px solid var(--coa-line);
  border-radius: var(--coa-r);
  font-size: 15px;
  color: var(--coa-ink);
  text-decoration: none;
  white-space: nowrap;
}
.oma-coa-nav__all:hover { border-color: var(--coa-blue); color: var(--coa-blue); }

.oma-coa-related { padding: 62px 0 0; }
.oma-coa-related__h {
  margin: 0 0 28px;
  font-size: 34px;
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: var(--oma-ls-head, -.02em);
}

.oma-coa-comments-closed {
  margin: 40px auto 0;
  max-width: var(--coa-doc-max);
  padding: 0 var(--oma-gutter, 65px);
  font-size: 15px;
  color: var(--coa-muted);
  text-align: center;
  white-space: normal;
}

/* ==========================================================================
   5. LIGHTBOX — full-resolution viewer. No dependencies.
   ========================================================================== */

.oma-coa-lb {
  position: fixed;
  inset: 0;
  z-index: 100000;
  display: flex;
  flex-direction: column;
  background: rgba(7, 7, 10, .95);
}
.oma-coa-lb[hidden] { display: none; }

.oma-coa-lb__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 18px;
  color: rgba(255, 255, 255, .85);
  font-size: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, .12);
}
.oma-coa-lb__cap { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.oma-coa-lb__tools { display: flex; align-items: center; gap: 8px; flex: 0 0 auto; }
.oma-coa-lb__btn {
  padding: 7px 13px;
  border: 1px solid rgba(255, 255, 255, .3);
  border-radius: var(--oma-r-9, 9px);
  background: transparent;
  color: #fff;
  font-family: inherit;
  font-size: 14px;
  line-height: 1.2;
  cursor: pointer;
}
.oma-coa-lb__btn:hover { background: rgba(255, 255, 255, .14); }
.oma-coa-lb__btn[disabled] { opacity: .35; cursor: default; }
.oma-coa-lb__btn--close { border-color: transparent; font-size: 22px; padding: 2px 12px; }

.oma-coa-lb__stage {
  flex: 1 1 auto;
  overflow: auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 18px;
  -webkit-overflow-scrolling: touch;
}
.oma-coa-lb__img {
  display: block;
  max-width: 100%;
  height: auto;
  background: #fff;
  cursor: zoom-in;
}
.oma-coa-lb.is-actual .oma-coa-lb__stage { align-items: flex-start; justify-content: flex-start; }
.oma-coa-lb.is-actual .oma-coa-lb__img { max-width: none; cursor: zoom-out; }

body.oma-coa-lb-open { overflow: hidden; }

/* ==========================================================================
   6. RESPONSIVE — breakpoints measured in be_classes.css: 1440/1100/959/767
   ========================================================================== */

@media (max-width: 1240px) {
  .oma-coa-grid { gap: 28px 22px; }
}

@media (max-width: 1100px) {
  .oma-coa-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .oma-coa-head { grid-template-columns: minmax(0, 1fr) 200px; gap: 28px; }
}

@media (max-width: 959px) {
  .oma-coa-intro__h { font-size: 40px; line-height: 1.1; }
  .oma-coa-related__h { font-size: 28px; }
  .oma-coa-nav__inner { grid-template-columns: 1fr; text-align: left; }
  .oma-coa-nav__link--next { text-align: left; }
  .oma-coa-nav__all { justify-self: start; }
}

@media (max-width: 767px) {
  .oma-coa-archive { padding: 40px 0 56px; }
  .oma-coa-single { padding-bottom: 56px; }
  .oma-coa-grid { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .oma-coa-toolbar { flex-direction: column; align-items: stretch; }
  .oma-coa-search { flex: 1 1 auto; }
  .oma-coa-intro__h { font-size: 32px; }
  .oma-coa-card__title { font-size: 24px; }

  .oma-coa-single__head { padding-top: 34px; }
  .oma-coa-head { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .oma-coa-head__photo { max-width: 200px; }
  .oma-coa-head__lede { font-size: 17px; }
  .oma-coa-head__product { width: 100%; justify-content: center; text-align: center; }

  .oma-coa-scans { padding-top: 30px; }
  .oma-coa-scan { margin-bottom: 30px; }
  .oma-coa-scan__zoom { opacity: 1; transform: none; width: 40px; height: 40px; }
  .oma-coa-scan__cap { font-size: 13px; }
  .oma-coa-scan__dims { margin-left: 0; width: 100%; }

  .oma-coa-lb__bar { font-size: 13px; padding: 10px 12px; }
  .oma-coa-lb__cap { display: none; }
  .oma-coa-lb__stage { padding: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  .oma-coa-card,
  .oma-coa-card__img,
  .oma-coa-scan__zoom,
  .oma-coa-card__arrow { transition: none; }
  .oma-coa-card:hover { transform: none; }
  .oma-coa-card:hover .oma-coa-card__img { transform: none; }
}

/* print: a COA should print as a document, nothing else */
@media print {
  .oma-coa-toolbar,
  .oma-coa-more,
  .oma-coa-nav,
  .oma-coa-related,
  .oma-coa-scan__zoom,
  .oma-coa-scan__actions,
  .oma-coa-head__products,
  .oma-coa-lb { display: none !important; }
  .oma-coa-scans__wrap { max-width: none; padding: 0; }
  .oma-coa-scan { page-break-inside: avoid; margin-bottom: 0; }
  .oma-coa-scan__link { border: 0; }
}