/* ChemBioSynth — COA Library page.
   Loaded only on pages assigned to the "COA Library" template. */

.coa-page{background:var(--paper);padding:0;max-width:none;margin:0}

/* ---------- Page header ---------- */
.coa-head{
  background:linear-gradient(180deg, var(--paper-warm) 0%, var(--paper) 100%);
  border-bottom:1px solid var(--line);
  padding:48px 28px 56px;
  text-align:center;
}
.coa-head-inner{max-width:760px;margin:0 auto}
.coa-eyebrow{
  display:inline-block;
  font-size:12px;font-weight:700;letter-spacing:.18em;
  text-transform:uppercase;color:var(--copper);
  margin-bottom:14px;
}
.coa-eyebrow::before{
  content:"";display:inline-block;width:24px;height:1.5px;
  background:var(--copper);margin-right:10px;vertical-align:middle;
}
.coa-eyebrow::after{
  content:"";display:inline-block;width:24px;height:1.5px;
  background:var(--copper);margin-left:10px;vertical-align:middle;
}
.coa-title{
  font-family:var(--serif);font-size:clamp(34px, 4.4vw, 56px);
  font-weight:600;letter-spacing:-.02em;line-height:1.05;
  color:var(--ink);margin:0 0 14px;
}
.coa-title em{font-style:italic;color:var(--copper);font-weight:500}
.coa-intro{
  margin:0 auto;max-width:580px;
  font-size:16px;line-height:1.65;color:var(--ink-soft);
}
.coa-trust{
  list-style:none;padding:0;margin:32px 0 0;
  display:flex;justify-content:center;gap:32px;flex-wrap:wrap;
}
.coa-trust li{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--ink);
  letter-spacing:.01em;
}
.coa-trust svg{color:var(--moss);flex-shrink:0}

/* ---------- Toolbar ---------- */
.coa-toolbar{
  max-width:1240px;margin:0 auto;padding:32px 28px 0;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.coa-search-wrap{
  position:relative;flex:1;max-width:480px;
  display:flex;align-items:center;
}
.coa-search-wrap svg{
  position:absolute;left:16px;top:50%;transform:translateY(-50%);
  color:var(--ink-soft);pointer-events:none;
}
.coa-search{
  width:100%;height:48px;
  padding:10px 16px 10px 44px;
  border:1px solid var(--line);border-radius:14px;
  background:#fff;
  font-size:14px;color:var(--ink);font-family:var(--sans);
  transition:border-color .2s, box-shadow .2s;
}
.coa-search:focus{
  outline:none;border-color:var(--ink);
  box-shadow:0 0 0 3px rgba(26,34,56,.08);
}
.coa-count{
  font-size:13px;font-weight:600;color:var(--ink-soft);
  letter-spacing:.04em;text-transform:uppercase;
}

/* ---------- Grid ---------- */
.coa-grid{
  max-width:1240px;margin:0 auto;padding:24px 28px 96px;
  display:grid;grid-template-columns:repeat(3, 1fr);gap:24px;
}

/* ---------- Card ---------- */
.coa-card{
  background:#fff;
  border:1px solid var(--line);border-radius:18px;
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .25s ease, box-shadow .25s ease;
  box-shadow:0 4px 12px -8px rgba(26,34,56,.08);
}
.coa-card:hover{
  transform:translateY(-3px);
  box-shadow:0 18px 36px -16px rgba(26,34,56,.18);
}

.coa-card-thumb{
  position:relative;
  aspect-ratio:4 / 3;
  background:linear-gradient(180deg, var(--paper-warm) 0%, #fff 100%);
  display:grid;place-items:center;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  text-decoration:none;color:inherit;
}
a.coa-card-thumb{cursor:zoom-in}
a.coa-card-thumb.is-link{cursor:pointer}
.coa-card-thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .35s ease;
}
.coa-card:hover .coa-card-thumb img{transform:scale(1.04)}
.coa-card-thumb.is-empty{background:var(--paper-warm)}
.coa-card-thumb.is-empty svg{color:var(--ink-soft);opacity:.5}

/* Zoom hint icon — fades in on hover */
.coa-zoom-hint{
  position:absolute;bottom:12px;right:12px;z-index:2;
  width:34px;height:34px;border-radius:50%;
  background:rgba(255,255,255,.92);color:var(--ink);
  display:grid;place-items:center;
  box-shadow:0 6px 16px -6px rgba(0,0,0,.25);
  opacity:0;transform:translateY(4px);
  transition:opacity .2s ease, transform .2s ease;
  pointer-events:none;
}
.coa-card:hover .coa-zoom-hint,
.coa-card-thumb:focus-visible .coa-zoom-hint{
  opacity:1;transform:translateY(0);
}

.coa-purity-pill{
  position:absolute;top:14px;left:14px;
  padding:5px 11px;border-radius:999px;
  background:var(--moss);color:#fff;
  font-size:11px;font-weight:700;letter-spacing:.06em;
  line-height:1.4;
  box-shadow:0 6px 16px -6px rgba(79,106,74,.45);
}
.coa-file-pill{
  position:absolute;top:14px;right:14px;
  padding:5px 10px;border-radius:6px;
  background:var(--ink);color:var(--paper);
  font-size:10px;font-weight:800;letter-spacing:.08em;
  line-height:1.4;
}

.coa-card-body{
  padding:20px 22px 22px;
  flex:1;display:flex;flex-direction:column;
}
.coa-card-name{
  font-family:var(--serif);font-size:18px;font-weight:600;
  line-height:1.25;letter-spacing:-.01em;color:var(--ink);
  margin:0 0 12px;
}
.coa-card-meta{
  list-style:none;padding:0;margin:0 0 12px;
  display:flex;flex-direction:column;gap:6px;
}
.coa-card-meta li{
  display:flex;align-items:baseline;gap:10px;
  font-size:13px;
}
.coa-meta-label{
  font-size:10px;font-weight:700;color:var(--ink-soft);
  letter-spacing:.08em;text-transform:uppercase;
  min-width:54px;
}
.coa-card-meta strong{
  font-weight:600;color:var(--ink);
  font-family:ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size:12.5px;letter-spacing:.02em;
}
.coa-card-notes{
  font-size:13px;line-height:1.55;color:var(--ink-soft);
  margin:6px 0 14px;padding:10px 12px;
  background:var(--paper-warm);border-radius:10px;
  border-left:3px solid var(--copper);
}

/* Actions */
.coa-card-actions{
  margin-top:auto;padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;gap:8px;align-items:center;
}
.coa-btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:10px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  text-decoration:none;cursor:pointer;
  transition:all .2s;line-height:1;
}
.coa-btn-primary{
  background:var(--ink);color:var(--paper);flex:1;justify-content:center;
}
.coa-btn-primary:hover{background:var(--copper);color:var(--paper)}
.coa-btn-ghost{
  background:transparent;color:var(--ink);
  border:1px solid var(--line);width:42px;height:38px;
  justify-content:center;padding:0;
}
.coa-btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.coa-btn svg{flex-shrink:0}

/* ---------- Empty / no-results ---------- */
.coa-empty{
  max-width:520px;margin:48px auto 96px;text-align:center;
  background:#fff;border:1px dashed var(--line);border-radius:18px;
  padding:64px 32px;
}
.coa-empty svg{color:var(--ink-soft);margin-bottom:14px}
.coa-empty h3{
  font-family:var(--serif);font-size:22px;font-weight:600;
  letter-spacing:-.01em;color:var(--ink);margin:0 0 8px;
}
.coa-empty p{
  font-size:14px;color:var(--ink-soft);margin:0;line-height:1.6;
}
.coa-empty-result{
  text-align:center;font-size:14px;color:var(--ink-soft);
  margin:24px 28px 96px;
}

/* ---------- Responsive ---------- */
@media(max-width:980px){
  .coa-grid{grid-template-columns:repeat(2, 1fr);gap:18px;padding:20px 18px 80px}
  .coa-toolbar{padding:24px 18px 0}
}
@media(max-width:560px){
  .coa-head{padding:36px 18px 44px}
  .coa-trust{gap:14px}
  .coa-grid{grid-template-columns:1fr;padding:16px 18px 64px}
  .coa-card-thumb{aspect-ratio:16 / 10}
}

/* ---------- Lightbox ---------- */
.coa-lightbox{
  position:fixed;inset:0;z-index:9999;
  background:rgba(15, 20, 36, .88);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  display:none;align-items:center;justify-content:center;
  padding:48px;cursor:zoom-out;
  opacity:0;transition:opacity .2s ease;
}
.coa-lightbox.is-open{display:flex;opacity:1}
.coa-lightbox-img{
  max-width:min(1200px, 100%);max-height:100%;
  border-radius:14px;background:#fff;
  box-shadow:0 32px 80px -16px rgba(0,0,0,.55);
  cursor:default;
  animation:coaZoomIn .25s ease;
}
@keyframes coaZoomIn{
  from{transform:scale(.92);opacity:0}
  to{transform:scale(1);opacity:1}
}
.coa-lightbox-close{
  position:absolute;top:24px;right:24px;
  width:44px;height:44px;border-radius:50%;
  background:#fff;color:var(--ink);border:none;
  display:grid;place-items:center;cursor:pointer;
  font-size:0;line-height:0;
  box-shadow:0 8px 22px -8px rgba(0,0,0,.4);
  transition:transform .15s ease, background .15s ease;
}
.coa-lightbox-close::before,
.coa-lightbox-close::after{
  content:"";position:absolute;
  width:18px;height:2px;background:currentColor;border-radius:1px;
}
.coa-lightbox-close::before{transform:rotate(45deg)}
.coa-lightbox-close::after{transform:rotate(-45deg)}
.coa-lightbox-close:hover{
  background:var(--ink);color:#fff;transform:scale(1.05);
}
.coa-lightbox-caption{
  position:absolute;bottom:28px;left:50%;
  transform:translateX(-50%);
  max-width:calc(100% - 48px);
  font-size:13px;font-weight:600;color:#fff;
  background:rgba(0, 0, 0, .55);
  padding:8px 16px;border-radius:999px;
  letter-spacing:.02em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.coa-lightbox-caption:empty{display:none}

body.coa-lightbox-open{overflow:hidden}

@media(max-width:680px){
  .coa-lightbox{padding:20px}
  .coa-lightbox-close{top:14px;right:14px;width:38px;height:38px}
  .coa-lightbox-caption{bottom:14px;font-size:12px;padding:6px 14px}
}