/* =========================================================
   SCENTSOURCES — Design Tokens
   Direction: industrial spec-sheet / trade-catalog aesthetic.
   Steel-blue ink on light paper, safety-orange for actions,
   corner-bracket "alignment mark" motifs on listing cards
   (like datasheet crop marks), RFQ tickets styled like PO numbers.
   ========================================================= */

:root {
  --paper:      #EEF0F0;
  --paper-dim:  #E1E5E5;
  --ink:        #1B2A38;
  --ink-dim:    rgba(27,42,56,0.65);
  --steel:      #3E7C8C;
  --orange:     #D65A1F;
  --orange-dim: #B34A18;
  --line:       rgba(27,42,56,0.16);
  --white:      #FFFFFF;

  --font-display: "Barlow Condensed", "Oswald", "Arial Narrow", sans-serif;
  --font-body:    "Inter", -apple-system, sans-serif;
  --font-mono:    "IBM Plex Mono", "Space Mono", "Courier New", monospace;

  --maxw: 1240px;
  --pad: clamp(1.25rem, 4vw, 3rem);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--font-body); font-size: 16px; line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad); }

h1, h2, h3, .display {
  font-family: var(--font-display); font-weight: 600; letter-spacing: 0.01em;
  text-transform: uppercase; margin: 0 0 0.4em;
}
.eyebrow {
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--steel);
}
.part-no { font-family: var(--font-mono); font-size: 0.7rem; color: var(--ink-dim); letter-spacing: 0.03em; }

.skip-link { position: absolute; left: -999px; top: 0; background: var(--ink); color: var(--white); padding: 0.75em 1em; z-index: 999; }
.skip-link:focus { left: 1rem; top: 1rem; }
:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--paper); border-bottom: 1px solid var(--line); }
.site-header .bar { display: flex; align-items: center; justify-content: space-between; padding: 1rem var(--pad); max-width: var(--maxw); margin: 0 auto; }
.wordmark { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; letter-spacing: 0.02em; display: flex; align-items: baseline; gap: 0.5rem; }
.wordmark small { font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.1em; color: var(--steel); text-transform: uppercase; font-weight: 400; }
.main-nav { display: flex; gap: 1.75rem; }
.main-nav a { font-size: 0.88rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; position: relative; padding: 0.25rem 0; }
.main-nav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px; background: var(--orange); transform: scaleX(0); transition: transform 0.15s ease; }
.main-nav a:hover::after, .main-nav a[aria-current]::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: 1rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5em;
  font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.03em; text-transform: uppercase;
  padding: 0.85em 1.5em; border-radius: 2px; border: 1.5px solid var(--ink); cursor: pointer; transition: all 0.15s ease;
}
.btn-solid { background: var(--orange); border-color: var(--orange); color: var(--white); }
.btn-solid:hover { background: var(--orange-dim); border-color: var(--orange-dim); }
.btn-outline { background: transparent; color: var(--ink); }
.btn-outline:hover { background: var(--ink); color: var(--paper); }
.btn-block { width: 100%; }

/* ---------- Hero ---------- */
.hero { background: var(--ink); color: var(--paper); padding: clamp(3rem, 8vw, 6rem) var(--pad) clamp(3.5rem, 9vw, 6rem); position: relative; }
.hero .wrap { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 3rem; align-items: center; }
.hero .eyebrow { color: var(--orange); }
.hero h1 { font-size: clamp(2.4rem, 5vw, 4rem); line-height: 0.98; margin: 0.3em 0 0.4em; color: var(--white); }
.hero p.lede { font-size: 1.05rem; max-width: 46ch; color: rgba(238,240,240,0.75); margin-bottom: 1.75rem; }
.hero-ctas { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-ctas .btn-outline { border-color: rgba(238,240,240,0.35); color: var(--white); }
.hero-ctas .btn-outline:hover { background: var(--white); color: var(--ink); }

.spec-panel {
  border: 1px solid rgba(238,240,240,0.25); padding: 1.5rem; position: relative;
  font-family: var(--font-mono); font-size: 0.78rem; color: rgba(238,240,240,0.8);
}
.spec-panel::before, .spec-panel::after,
.spec-panel .corner-tl, .spec-panel .corner-br { content: ""; position: absolute; width: 14px; height: 14px; }
.spec-panel::before { top: -1px; left: -1px; border-top: 2px solid var(--orange); border-left: 2px solid var(--orange); }
.spec-panel::after { bottom: -1px; right: -1px; border-bottom: 2px solid var(--orange); border-right: 2px solid var(--orange); }
.spec-panel .row { display: flex; justify-content: space-between; padding: 0.4em 0; border-bottom: 1px dashed rgba(238,240,240,0.2); }
.spec-panel .row:last-child { border-bottom: none; }

/* ---------- Sections ---------- */
.section { padding: clamp(3rem, 6vw, 4.5rem) var(--pad); }
.section-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 1.75rem; flex-wrap: wrap; gap: 0.75rem; }
.section-head h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
.view-all { font-family: var(--font-mono); font-size: 0.78rem; text-transform: uppercase; border-bottom: 1px solid var(--ink); }

/* ---------- Category grid ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.cat-card { background: var(--paper); padding: 2rem 1.5rem; min-height: 200px; display: flex; flex-direction: column; justify-content: flex-end; gap: 0.4rem; position: relative; transition: background 0.15s ease; }
.cat-card:hover { background: var(--white); }
.cat-card .num { font-family: var(--font-mono); font-size: 0.72rem; color: var(--orange); position: absolute; top: 1.5rem; left: 1.5rem; }
.cat-card h3 { font-size: 1.1rem; margin-bottom: 0.1em; }
.cat-card span.sub { font-size: 0.82rem; color: var(--ink-dim); text-transform: none; font-family: var(--font-body); }
@media (max-width: 900px) { .cat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .cat-grid { grid-template-columns: 1fr; } }

/* ---------- Listing cards (the datasheet look) ---------- */
.listing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
@media (max-width: 980px) { .listing-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .listing-grid { grid-template-columns: 1fr; } }

.listing-card {
  background: var(--white); border: 1px solid var(--line); padding: 1.4rem; position: relative;
  display: flex; flex-direction: column; gap: 0.6rem;
}
.listing-card::before, .listing-card::after { content: ""; position: absolute; width: 10px; height: 10px; }
.listing-card::before { top: -1px; left: -1px; border-top: 2px solid var(--steel); border-left: 2px solid var(--steel); }
.listing-card::after { bottom: -1px; right: -1px; border-bottom: 2px solid var(--steel); border-right: 2px solid var(--steel); }
.listing-card .cat-tag { font-family: var(--font-mono); font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--steel); border: 1px solid var(--steel); display: inline-block; padding: 0.2em 0.55em; align-self: flex-start; }
.listing-card h3 { text-transform: none; font-family: var(--font-body); font-weight: 700; font-size: 1.05rem; letter-spacing: 0; margin: 0.2em 0 0; }
.listing-card .supplier { font-size: 0.85rem; color: var(--ink-dim); }
.listing-card .meta-row { display: flex; justify-content: space-between; align-items: center; margin-top: auto; padding-top: 0.6rem; border-top: 1px dashed var(--line); }
.listing-card .moq { font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink-dim); }
.listing-card .rfq-btn { font-family: var(--font-mono); font-size: 0.7rem; text-transform: uppercase; border: 1.5px solid var(--ink); padding: 0.4em 0.75em; background: none; cursor: pointer; }
.listing-card .rfq-btn:hover { background: var(--ink); color: var(--paper); }

/* ---------- Trust / stats strip ---------- */
/* ---------- Cross-network banner ---------- */
.partner-banner { display: block; border: 1px solid var(--line); overflow: hidden; }
.partner-banner img { width: 100%; height: auto; display: block; transition: transform 0.3s ease; }
.partner-banner:hover img { transform: scale(1.015); }

.trust-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-strip div { padding: 1.5rem var(--pad); text-align: center; border-right: 1px solid var(--line); }
.trust-strip div:last-child { border-right: none; }
.trust-strip .num { font-family: var(--font-mono); font-size: 1.5rem; font-weight: 700; display: block; }
@media (max-width: 700px) { .trust-strip { grid-template-columns: repeat(2, 1fr); } }

/* ---------- RFQ process strip ---------- */
.process-strip { background: var(--ink); color: var(--paper); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }
.process-step { position: relative; padding-left: 0; }
.process-step .step-no { font-family: var(--font-mono); font-size: 2rem; color: var(--orange); display: block; margin-bottom: 0.4rem; }
.process-step h3 { color: var(--white); font-size: 1.05rem; }
.process-step p { color: rgba(238,240,240,0.7); font-size: 0.9rem; margin: 0; }
@media (max-width: 900px) { .process-grid { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Filters (directory page) ---------- */
.filter-bar { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 2rem; }
.filter-chip {
  font-family: var(--font-mono); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em;
  padding: 0.5em 1em; border: 1.5px solid var(--ink); background: var(--paper); cursor: pointer;
}
.filter-chip.active { background: var(--ink); color: var(--paper); }

/* ---------- Breadcrumb ---------- */
.crumbs { font-family: var(--font-mono); font-size: 0.75rem; padding: 1rem var(--pad); color: var(--ink-dim); }
.crumbs a:hover { color: var(--orange); }

/* ---------- Listing detail ---------- */
.pdp { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.pdp-media { aspect-ratio: 4/3; background: var(--white); border: 1px solid var(--line); display: flex; align-items: center; justify-content: center; position: relative; }
.pdp-media::before, .pdp-media::after { content: ""; position: absolute; width: 16px; height: 16px; }
.pdp-media::before { top: -1px; left: -1px; border-top: 2px solid var(--steel); border-left: 2px solid var(--steel); }
.pdp-media::after { bottom: -1px; right: -1px; border-bottom: 2px solid var(--steel); border-right: 2px solid var(--steel); }
.pdp-media .glyph { font-family: var(--font-mono); font-size: 3rem; color: var(--steel); opacity: 0.4; }
.pdp-info h1 { text-transform: none; font-family: var(--font-body); font-size: 1.8rem; font-weight: 800; }
.spec-table { width: 100%; border-collapse: collapse; margin: 1.25rem 0; font-size: 0.9rem; }
.spec-table td { padding: 0.6em 0; border-bottom: 1px solid var(--line); }
.spec-table td:first-child { font-family: var(--font-mono); color: var(--ink-dim); width: 42%; text-transform: uppercase; font-size: 0.78rem; }
.rfq-form { border: 1px solid var(--line); background: var(--white); padding: 1.5rem; margin-top: 1rem; }
.rfq-form .field { margin-bottom: 1rem; }
.rfq-form label { display: block; font-family: var(--font-mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 0.35em; color: var(--ink-dim); }
.rfq-form input, .rfq-form textarea, .rfq-form select { width: 100%; padding: 0.75em 0.85em; border: 1px solid var(--ink); background: var(--paper); font-family: var(--font-body); font-size: 0.92rem; }
.rfq-ticket { font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink-dim); border: 1px dashed var(--line); padding: 0.75rem 1rem; margin-bottom: 1rem; }
@media (max-width: 800px) { .pdp { grid-template-columns: 1fr; } }

/* ---------- Newsletter ---------- */
.newsletter { background: var(--paper-dim); text-align: center; }
.newsletter .wrap { max-width: 560px; }
.newsletter form { display: flex; gap: 0.6rem; margin-top: 1.25rem; }
.newsletter input[type="email"] { flex: 1; padding: 0.85em 1em; border: 1.5px solid var(--ink); background: var(--white); font-family: var(--font-body); font-size: 0.95rem; }
@media (max-width: 480px) { .newsletter form { flex-direction: column; } }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: rgba(238,240,240,0.7); padding: 3rem var(--pad) 1.5rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2.5rem; padding-bottom: 2.5rem; border-bottom: 1px solid rgba(238,240,240,0.18); }
.footer-grid h4 { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--white); margin-bottom: 1em; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.6rem; font-size: 0.9rem; }
.footer-grid a:hover { color: var(--orange); }
.footer-bottom { display: flex; justify-content: space-between; padding-top: 1.25rem; font-size: 0.8rem; flex-wrap: wrap; gap: 0.5rem; }
.footer-company { font-size: 0.82rem; padding-bottom: 1rem; border-bottom: 1px solid rgba(238,240,240,0.18); margin-bottom: 1rem; }
.footer-company a { color: rgba(238,240,240,0.8); text-decoration: underline; }
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }

.pill { display: inline-block; font-family: var(--font-mono); font-size: 0.68rem; padding: 0.25em 0.6em; border: 1px solid var(--ink); }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }