/* ==========================================================================
   BRASSWORKS — Core Stylesheet
   A technical / precision-engineering visual language for a brass
   components manufacturer. Palette, type and layout tokens are all
   declared as CSS custom properties in :root — change them there to
   re-theme the whole site.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Big+Shoulders+Display:wght@600;700;800&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  /* ---- Color tokens ---- */
  --ink:            #1C1B19;   /* near-black, warm charcoal — dark sections */
  --ink-soft:       #2A2824;
  --paper:          #F3EFE7;   /* warm technical-paper background */
  --paper-dim:      #E8E2D5;
  --brass:          #A97C3E;   /* primary brand metal */
  --brass-bright:   #D4A94E;   /* hover / highlight */
  --brass-deep:     #7C5A2C;
  --blueprint:      #33475B;   /* dimension-line / technical blue-grey */
  --blueprint-soft: #5C7186;
  --line:           rgba(28,27,25,0.14);
  --line-on-dark:   rgba(243,239,231,0.16);
  --ok:             #4C7A52;

  /* ---- Type tokens ---- */
  --f-display: 'Big Shoulders Display', sans-serif;
  --f-body:    'IBM Plex Sans', sans-serif;
  --f-mono:    'IBM Plex Mono', monospace;

  /* ---- Layout tokens ---- */
  --maxw: 1240px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 2px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{
  scroll-behavior:smooth;
  overflow-x:hidden; /* off-canvas mobile nav (translateX) must not create horizontal scroll */
  width:100%;
}
body{
  margin:0;
  font-family:var(--f-body);
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  width:100%;
}
img,svg{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ margin:0; font-family:var(--f-display); font-weight:700; letter-spacing:0.01em; line-height:1.02; }
p{ margin:0; line-height:1.65; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important; }
}

:focus-visible{
  outline:2px solid var(--brass-bright);
  outline-offset:3px;
}

.wrap{
  max-width:var(--maxw);
  margin:0 auto;
  padding-left:var(--gutter);
  padding-right:var(--gutter);
}

/* ---- Eyebrow / mono labels (spec-sheet vocabulary) ---- */
.eyebrow{
  font-family:var(--f-mono);
  font-size:0.72rem;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--brass-deep);
  display:flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{
  content:"";
  width:22px; height:1px;
  background:var(--brass-deep);
  display:inline-block;
}
.on-dark .eyebrow, .eyebrow.on-dark{ color:var(--brass-bright); }
.on-dark .eyebrow::before, .eyebrow.on-dark::before{ background:var(--brass-bright); }

/* ==========================================================================
   HEADER / NAV
   ========================================================================== */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(28,27,25,0.96);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line-on-dark);
}
.site-header .wrap{
  display:flex; align-items:center; justify-content:space-between;
  height:76px;
}
.brand{
  display:flex; align-items:center; gap:12px;
  font-family:var(--f-display);
  color:var(--paper);
  font-size:1.5rem;
  font-weight:800;
  letter-spacing:0.01em;
  white-space:nowrap;
}
.brand .mark{
  width:34px; height:34px;
  flex:none;
}
.brand small{
  display:block;
  font-family:var(--f-mono);
  font-size:0.58rem;
  letter-spacing:0.16em;
  color:var(--brass-bright);
  font-weight:500;
  margin-top:2px;
}

.main-nav{ display:flex; align-items:center; gap:2px; }
.main-nav > ul{ display:flex; align-items:center; gap:2px; }
.main-nav a{
  display:flex; align-items:center;
  font-family:var(--f-mono);
  font-size:0.8rem;
  letter-spacing:0.04em;
  text-transform:uppercase;
  color:var(--paper);
  padding:10px 16px;
  border-radius:var(--radius);
  transition:color .15s ease, background .15s ease;
}
.main-nav a:hover, .main-nav a:focus-visible{ color:var(--ink); background:var(--brass-bright); }
.main-nav li.has-drop{ position:relative; }
.main-nav li.has-drop > a::after{ content:"▾"; margin-left:6px; font-size:0.65em; }
.dropdown{
  position:absolute; top:calc(100% + 8px); left:0;
  min-width:260px;
  background:var(--ink-soft);
  border:1px solid var(--line-on-dark);
  padding:8px;
  opacity:0; visibility:hidden; transform:translateY(6px);
  transition:opacity .15s ease, transform .15s ease, visibility .15s;
}
.main-nav li.has-drop:hover .dropdown,
.main-nav li.has-drop:focus-within .dropdown{
  opacity:1; visibility:visible; transform:translateY(0);
}
.dropdown a{ text-transform:none; letter-spacing:0.01em; font-size:0.85rem; padding:10px 12px; display:flex; justify-content:space-between; gap:10px; }
.dropdown a span.tag{ font-family:var(--f-mono); font-size:0.65rem; color:var(--brass-bright); opacity:0.8; }
.dropdown a:hover{ background:var(--brass); color:var(--ink); }

.nav-toggle{
  display:none;
  background:none; border:1px solid var(--line-on-dark);
  width:44px; height:40px;
  color:var(--paper);
  font-family:var(--f-mono);
  cursor:pointer;
}
.nav-toggle span{ display:block; width:20px; height:2px; background:var(--paper); margin:4px auto; transition:transform .2s ease, opacity .2s ease; }
.nav-toggle.open span:nth-child(1){ transform:translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity:0; }
.nav-toggle.open span:nth-child(3){ transform:translateY(-6px) rotate(-45deg); }

@media (max-width:900px){
  .nav-toggle{ display:block; }
  .main-nav{
    position:fixed; top:76px; left:0; right:0;
    height:calc(100vh - 76px);
    background:var(--ink);
    flex-direction:column; align-items:stretch;
    padding:12px var(--gutter) 40px;
    overflow-y:auto;
    transform:translateX(100%);
    transition:transform .25s ease;
  }
  .main-nav.open{ transform:translateX(0); }
  .main-nav > ul{ flex-direction:column; align-items:stretch; gap:0; }
  .main-nav a{ padding:16px 4px; border-bottom:1px solid var(--line-on-dark); font-size:0.95rem; }
  .dropdown{
    position:static; opacity:1; visibility:visible; transform:none;
    display:none; border:none; background:var(--ink-soft); margin-bottom:6px;
  }
  li.has-drop.open .dropdown{ display:block; }
  .main-nav li.has-drop > a::after{ margin-left:auto; }
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--f-mono);
  font-size:0.8rem;
  letter-spacing:0.06em;
  text-transform:uppercase;
  padding:14px 26px;
  border:1px solid currentColor;
  border-radius:var(--radius);
  transition:background .15s ease, color .15s ease, transform .15s ease;
  cursor:pointer;
  background:none;
}
.btn-brass{ background:var(--brass); border-color:var(--brass); color:var(--ink); }
.btn-brass:hover{ background:var(--brass-bright); border-color:var(--brass-bright); transform:translateY(-1px); }
.btn-ghost-dark{ color:var(--paper); }
.btn-ghost-dark:hover{ background:var(--paper); color:var(--ink); }
.btn-ghost-light{ color:var(--ink); }
.btn-ghost-light:hover{ background:var(--ink); color:var(--paper); }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{
  background:var(--ink);
  color:var(--paper);
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line-on-dark);
}
.hero .wrap{
  display:grid;
  grid-template-columns:1.05fr 0.95fr;
  gap:40px;
  align-items:center;
  padding-top:64px;
  padding-bottom:56px;
  min-height:560px;
}
.hero h1{
  font-size:clamp(2.6rem, 5.6vw, 4.6rem);
  color:var(--paper);
  margin:18px 0 22px;
}
.hero h1 em{ font-style:normal; color:var(--brass-bright); }
.hero p.lede{
  font-size:1.08rem;
  color:var(--paper-dim);
  max-width:46ch;
  margin-bottom:34px;
}
.hero .cta-row{ display:flex; gap:14px; flex-wrap:wrap; margin-bottom:38px; }
.hero .specs{
  display:flex; gap:28px; flex-wrap:wrap;
  border-top:1px solid var(--line-on-dark);
  padding-top:22px;
  font-family:var(--f-mono);
}
.hero .specs .n{ font-family:var(--f-display); font-size:1.9rem; color:var(--brass-bright); line-height:1; }
.hero .specs .l{ font-size:0.68rem; letter-spacing:0.08em; text-transform:uppercase; color:var(--paper-dim); margin-top:6px; }

.hero-art{ position:relative; }
.hero-art svg{ width:100%; height:auto; }
.draw-line{
  stroke-dasharray:1000;
  stroke-dashoffset:1000;
  animation:draw 2.2s ease forwards;
}
.draw-line.d2{ animation-delay:.25s; }
.draw-line.d3{ animation-delay:.5s; }
.fade-in-part{ opacity:0; animation:fadeIn 1s ease forwards; animation-delay:.4s; }
@keyframes draw{ to{ stroke-dashoffset:0; } }
@keyframes fadeIn{ to{ opacity:1; } }

@media (max-width:900px){
  .hero .wrap{ grid-template-columns:1fr; padding-top:44px; }
  .hero-art{ order:-1; max-width:320px; margin:0 auto 8px; }
}

/* ==========================================================================
   SECTIONS / GENERIC
   ========================================================================== */
.section{ padding:88px 0; }
.section.tight{ padding:60px 0; }
.section.on-dark{ background:var(--ink); color:var(--paper); }
.section.on-dim{ background:var(--paper-dim); }
.section-head{ max-width:640px; margin-bottom:48px; }
.section-head h2{ font-size:clamp(2rem, 3.4vw, 2.8rem); margin-top:14px; }
.section-head p{ margin-top:16px; color:var(--ink-soft); font-size:1.02rem; }
.on-dark .section-head p{ color:var(--paper-dim); }

.divider{ border:none; border-top:1px solid var(--line); margin:0; }
.on-dark .divider{ border-top:1px solid var(--line-on-dark); }

/* ---- Category grid (home + products overview) ---- */
.cat-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
.cat-card{
  background:var(--paper);
  padding:34px 28px;
  display:flex; flex-direction:column; gap:16px;
  transition:background .18s ease;
  position:relative;
}
.cat-card:hover{ background:#fff; }
.cat-card .icon{ width:56px; height:56px; color:var(--brass); }
.cat-card h3{ font-size:1.35rem; }
.cat-card p{ color:var(--ink-soft); font-size:0.94rem; flex:1; }
.cat-card .more{
  font-family:var(--f-mono); font-size:0.72rem; letter-spacing:0.06em; text-transform:uppercase;
  color:var(--blueprint); display:flex; align-items:center; gap:8px;
}
.cat-card:hover .more{ color:var(--brass-deep); }
.cat-card .num{ position:absolute; top:26px; right:28px; font-family:var(--f-mono); font-size:0.72rem; color:var(--line); }

@media (max-width:900px){ .cat-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:560px){ .cat-grid{ grid-template-columns:1fr; } }

/* ---- Product grid (category pages) ---- */
.product-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:28px;
}
.product-card{
  background:#fff;
  border:1px solid var(--line);
  transition:transform .18s ease, box-shadow .18s ease;
}
.product-card:hover{ transform:translateY(-4px); box-shadow:0 14px 30px rgba(28,27,25,0.10); }
.product-card .thumb{
  aspect-ratio:4/3;
  background:linear-gradient(155deg, var(--paper-dim), var(--paper));
  display:flex; align-items:center; justify-content:center;
  padding:20px;
  border-bottom:1px solid var(--line);
}
.product-card .thumb svg{ width:78%; height:78%; }
.product-card .info{ padding:20px 22px 24px; }
.product-card .sku{ font-family:var(--f-mono); font-size:0.68rem; color:var(--blueprint-soft); letter-spacing:0.04em; }
.product-card h4{ font-size:1.08rem; margin:8px 0 8px; }
.product-card p{ font-size:0.88rem; color:var(--ink-soft); margin-bottom:14px; }
.spec-row{ display:flex; flex-wrap:wrap; gap:8px; }
.spec-chip{
  font-family:var(--f-mono); font-size:0.66rem; letter-spacing:0.02em;
  border:1px solid var(--line); padding:4px 9px; color:var(--blueprint); background:var(--paper);
}

@media (max-width:900px){ .product-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:560px){ .product-grid{ grid-template-columns:1fr; } }

/* ---- Process strip ---- */
.process{
  display:grid;
  grid-template-columns:repeat(5, 1fr);
  background:var(--ink);
  color:var(--paper);
  border-top:1px solid var(--line-on-dark);
  border-bottom:1px solid var(--line-on-dark);
}
.process .step{ padding:30px 22px; border-left:1px solid var(--line-on-dark); }
.process .step:first-child{ border-left:none; }
.process .step .idx{ font-family:var(--f-mono); color:var(--brass-bright); font-size:0.78rem; }
.process .step h4{ font-family:var(--f-body); font-weight:600; font-size:1rem; margin:10px 0 8px; color:var(--paper); }
.process .step p{ font-size:0.85rem; color:var(--paper-dim); }
@media (max-width:900px){ .process{ grid-template-columns:repeat(2,1fr); } .process .step:nth-child(3){ border-left:none; } }
@media (max-width:560px){ .process{ grid-template-columns:1fr; } .process .step{ border-left:none !important; border-top:1px solid var(--line-on-dark); } .process .step:first-child{ border-top:none; } }

/* ---- Stat band ---- */
.stat-band{ display:grid; grid-template-columns:repeat(4,1fr); border:1px solid var(--line); }
.stat-band .stat{ padding:30px 24px; border-left:1px solid var(--line); }
.stat-band .stat:first-child{ border-left:none; }
.stat-band .n{ font-family:var(--f-display); font-size:2.4rem; color:var(--brass-deep); line-height:1; }
.stat-band .l{ font-family:var(--f-mono); font-size:0.68rem; text-transform:uppercase; letter-spacing:0.06em; color:var(--ink-soft); margin-top:10px; }
@media (max-width:700px){ .stat-band{ grid-template-columns:repeat(2,1fr); } .stat-band .stat:nth-child(3){ border-left:none; } .stat-band .stat{ border-bottom:1px solid var(--line); } }

/* ---- Two column with image/art ---- */
.split{ display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
@media (max-width:900px){ .split{ grid-template-columns:1fr; gap:32px; } }

.badge-row{ display:flex; flex-wrap:wrap; gap:10px; margin-top:22px; }
.badge{ font-family:var(--f-mono); font-size:0.7rem; letter-spacing:0.04em; border:1px solid var(--line); padding:7px 12px; color:var(--blueprint); }

/* ---- Values / cards ---- */
.value-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line); }
.value-card{ background:#fff; padding:30px 26px; }
.value-card .num{ font-family:var(--f-mono); color:var(--brass-deep); font-size:0.8rem; }
.value-card h3{ font-size:1.2rem; margin:14px 0 10px; }
.value-card p{ color:var(--ink-soft); font-size:0.92rem; }
@media (max-width:800px){ .value-grid{ grid-template-columns:1fr; } }

/* ---- Timeline (about) ---- */
.timeline{ position:relative; padding-left:28px; border-left:1px solid var(--line); }
.tl-item{ position:relative; padding-bottom:38px; }
.tl-item:last-child{ padding-bottom:0; }
.tl-item::before{ content:""; position:absolute; left:-33px; top:4px; width:9px; height:9px; background:var(--brass); border-radius:50%; }
.tl-item .yr{ font-family:var(--f-mono); color:var(--brass-deep); font-size:0.82rem; }
.tl-item h4{ font-size:1.15rem; margin:6px 0 8px; }
.tl-item p{ color:var(--ink-soft); font-size:0.92rem; max-width:56ch; }

/* ---- Quality / certs ---- */
.cert-row{ display:flex; flex-wrap:wrap; gap:16px; }
.cert-pill{ display:flex; align-items:center; gap:10px; border:1px solid var(--line); padding:12px 18px; font-family:var(--f-mono); font-size:0.78rem; }
.cert-pill .dot{ width:8px; height:8px; background:var(--ok); border-radius:50%; }

/* ==========================================================================
   CONTACT PAGE
   ========================================================================== */
.contact-grid{ display:grid; grid-template-columns:0.9fr 1.1fr; gap:0; border:1px solid var(--line); }
.contact-info{ background:var(--ink); color:var(--paper); padding:52px 44px; }
.contact-info h3{ color:var(--paper); font-size:1.5rem; margin:14px 0 22px; }
.contact-info .row{ padding:16px 0; border-top:1px solid var(--line-on-dark); }
.contact-info .row:first-of-type{ border-top:none; }
.contact-info .row .l{ font-family:var(--f-mono); font-size:0.68rem; text-transform:uppercase; letter-spacing:0.06em; color:var(--brass-bright); margin-bottom:6px; }
.contact-info .row .v{ font-size:0.98rem; color:var(--paper-dim); line-height:1.6; }
.contact-form{ padding:52px 44px; background:#fff; }
.field{ margin-bottom:20px; }
.field label{ display:block; font-family:var(--f-mono); font-size:0.7rem; text-transform:uppercase; letter-spacing:0.06em; margin-bottom:8px; color:var(--ink-soft); }
.field input, .field select, .field textarea{
  width:100%;
  border:1px solid var(--line);
  background:var(--paper);
  padding:13px 14px;
  font-family:var(--f-body);
  font-size:0.95rem;
  color:var(--ink);
  border-radius:var(--radius);
}
.field input:focus, .field select:focus, .field textarea:focus{ outline:2px solid var(--brass); outline-offset:0; background:#fff; }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
@media (max-width:600px){ .field-row{ grid-template-columns:1fr; } }
.form-note{ font-size:0.8rem; color:var(--ink-soft); margin-top:6px; }
.form-status{ margin-top:16px; font-family:var(--f-mono); font-size:0.82rem; padding:12px 14px; border:1px solid var(--ok); color:var(--ok); display:none; }
.form-status.show{ display:block; }

@media (max-width:900px){ .contact-grid{ grid-template-columns:1fr; } .contact-info, .contact-form{ padding:36px 24px; } }

.map-frame{ border:1px solid var(--line); filter:grayscale(0.3) contrast(1.05); width:100%; height:340px; }

/* ==========================================================================
   BREADCRUMB
   ========================================================================== */
.breadcrumb{
  background:var(--paper-dim);
  border-bottom:1px solid var(--line);
  padding:16px 0;
  font-family:var(--f-mono);
  font-size:0.76rem;
  letter-spacing:0.02em;
}
.breadcrumb a{ color:var(--blueprint); }
.breadcrumb a:hover{ color:var(--brass-deep); }
.breadcrumb .sep{ margin:0 8px; color:var(--ink-soft); opacity:.5; }
.breadcrumb .current{ color:var(--ink-soft); }

/* ---- Page header band (used on inner pages) ---- */
.page-head{ background:var(--ink); color:var(--paper); padding:56px 0 44px; }
.page-head .eyebrow{ color:var(--brass-bright); }
.page-head .eyebrow::before{ background:var(--brass-bright); }
.page-head h1{ color:var(--paper); font-size:clamp(2.2rem,4.4vw,3.2rem); margin-top:16px; max-width:26ch; }
.page-head p{ color:var(--paper-dim); max-width:62ch; margin-top:16px; font-size:1.02rem; }

/* ---- CTA band ---- */
.cta-band{ background:var(--brass); color:var(--ink); padding:64px 0; }
.cta-band .wrap{ display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap; }
.cta-band h2{ font-size:clamp(1.7rem,3vw,2.4rem); }
.cta-band p{ margin-top:8px; color:var(--ink-soft); max-width:50ch; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer{ background:var(--ink); color:var(--paper-dim); padding-top:64px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; padding-bottom:48px; border-bottom:1px solid var(--line-on-dark); }
.footer-grid h5{ font-family:var(--f-mono); font-size:0.72rem; text-transform:uppercase; letter-spacing:0.08em; color:var(--brass-bright); margin-bottom:18px; }
.footer-grid li{ margin-bottom:10px; font-size:0.9rem; }
.footer-grid a:hover{ color:var(--brass-bright); }
.footer-brand p{ color:var(--paper-dim); font-size:0.92rem; max-width:34ch; margin-top:14px; }
.foot-bottom{ display:flex; justify-content:space-between; align-items:center; padding:26px 0; font-family:var(--f-mono); font-size:0.72rem; color:var(--paper-dim); opacity:0.75; flex-wrap:wrap; gap:10px; }
@media (max-width:900px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:560px){ .footer-grid{ grid-template-columns:1fr; } }

/* ---- .reveal ----
   Intentionally not used to hide content. Real content on a manufacturing
   site should never depend on JS/IntersectionObserver timing to become
   visible (crawlers, slow scripts, and some browsers can leave it hidden
   forever). The class is kept as an inert hook only. */

/* ---- Placeholder-art notice (dev helper, safe to delete) ---- */
.art-notice{
  font-family:var(--f-mono); font-size:0.68rem; color:var(--blueprint-soft);
  text-align:center; padding:8px; background:var(--paper-dim); border-top:1px dashed var(--line);
}