/* ============================================================
   ST Machining — Precision Machining & Fabrication
   Industrial dark theme · brushed steel · safety orange
   ============================================================ */

:root {
  --bg:        #0b0b0d;
  --bg-2:      #111114;
  --panel:     #161619;
  --panel-2:   #1c1c21;
  --line:      #2a2a30;
  --line-2:    #34343c;

  --orange:    #ed6a1f;
  --orange-2:  #f47f30;
  --orange-dk: #c4500f;

  --text:      #e9e9ec;
  --muted:     #a0a0a8;
  --muted-2:   #74747c;

  --steel-1:   #ffffff;
  --steel-2:   #c3c5ca;
  --steel-3:   #82848c;

  --radius:    4px;
  --maxw:      1180px;
  --shadow:    0 18px 50px rgba(0,0,0,.55);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

a { color: inherit; text-decoration: none; }
img, svg { display: block; }

/* ---------- Brushed-steel text ---------- */
.steel {
  background: linear-gradient(180deg,
    var(--steel-1) 0%,
    var(--steel-1) 30%,
    var(--steel-2) 52%,
    var(--steel-3) 72%,
    var(--steel-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: "Saira Condensed", sans-serif;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  font-size: 15px;
  padding: 12px 22px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.btn--lg { font-size: 17px; padding: 15px 30px; }
.btn--block { width: 100%; }
.btn--primary {
  background: linear-gradient(180deg, var(--orange-2), var(--orange));
  color: #1a0e05;
  box-shadow: 0 6px 18px rgba(237,106,31,.32);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(237,106,31,.45); }
.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-2);
}
.btn--ghost:hover { border-color: var(--orange); color: #fff; transform: translateY(-2px); }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 51;
  background: #060607;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}
.topbar__inner { display: flex; justify-content: space-between; align-items: center; height: 40px; gap: 16px; }
.topbar__flag { display: inline-flex; align-items: center; gap: 9px; color: var(--muted); }
.topbar__flag strong { font-family: "Saira Condensed", sans-serif; letter-spacing: .12em; text-transform: uppercase; color: var(--steel-2); font-weight: 600; }
.topbar__flag svg { border: 1px solid #2a2a30; border-radius: 2px; }
.topbar__contact { display: flex; gap: 22px; }
.topbar__link { display: inline-flex; align-items: center; gap: 7px; color: var(--muted); transition: color .2s; }
.topbar__link svg { color: var(--orange); }
.topbar__link:hover { color: #fff; }

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 40px;
  z-index: 50;
  background: rgba(11,11,13,.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header__inner { display: flex; align-items: center; gap: 24px; height: 70px; }

/* Logo */
.logo { display: inline-flex; align-items: center; gap: 12px; }
.logo__mark {
  display: inline-flex;
  align-items: center;
  font-family: "Anton", sans-serif;
  font-size: 30px;
  line-height: 1;
  padding: 4px 8px;
  border: 2px solid var(--line-2);
  border-radius: 3px;
  background: linear-gradient(160deg, #26262b, #0d0d10);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08);
}
.logo__s { color: var(--steel-1); -webkit-text-fill-color: var(--steel-1); }
.logo__t { color: var(--orange); transform: skewX(-8deg); display: inline-block; }
.logo__word { font-family: "Saira Condensed", sans-serif; font-weight: 700; font-size: 22px; letter-spacing: .08em; }
.logo__st { color: var(--orange); }
.logo__machining { color: var(--steel-2); }

.nav { display: flex; gap: 26px; margin-left: auto; }
.nav a {
  font-family: "Saira Condensed", sans-serif;
  font-weight: 600;
  letter-spacing: .07em;
  text-transform: uppercase;
  font-size: 15px;
  color: var(--muted);
  position: relative;
  padding: 4px 0;
  transition: color .2s;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 2px;
  background: var(--orange);
  transition: width .25s ease;
}
.nav a:hover { color: #fff; }
.nav a:hover::after { width: 100%; }
.header__cta { margin-left: 4px; }

/* Mobile nav toggle */
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; margin-left: auto; }
.nav-toggle span { width: 26px; height: 2px; background: var(--text); transition: .25s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav { display: none; flex-direction: column; padding: 10px 24px 22px; gap: 4px; border-bottom: 1px solid var(--line); background: var(--bg-2); }
.mobile-nav.open { display: flex; }
.mobile-nav a { font-family: "Saira Condensed", sans-serif; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; padding: 12px 4px; color: var(--muted); border-bottom: 1px solid var(--line); }
.mobile-nav a:last-child { border: 0; margin-top: 10px; }
.mobile-nav a.btn { color: #1a0e05; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 110px 0 96px;
  border-bottom: 1px solid var(--line);
}
.hero__bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(900px 500px at 78% 18%, rgba(237,106,31,.16), transparent 60%),
    radial-gradient(700px 600px at 8% 90%, rgba(120,140,170,.08), transparent 60%),
    repeating-linear-gradient(115deg, rgba(255,255,255,.018) 0 2px, transparent 2px 7px),
    linear-gradient(180deg, #0d0d10, #08080a);
}
.hero__sparks {
  position: absolute; top: 0; right: 0; width: 45%; height: 100%; z-index: 0;
  background:
    radial-gradient(2px 2px at 80% 30%, rgba(255,170,80,.9), transparent),
    radial-gradient(2px 2px at 70% 55%, rgba(255,140,40,.7), transparent),
    radial-gradient(1.5px 1.5px at 90% 45%, rgba(255,200,120,.8), transparent),
    radial-gradient(1.5px 1.5px at 60% 70%, rgba(255,120,30,.6), transparent),
    radial-gradient(2px 2px at 85% 75%, rgba(255,180,90,.7), transparent);
  filter: blur(.3px);
  opacity: .8;
  mask-image: linear-gradient(to left, #000, transparent);
  -webkit-mask-image: linear-gradient(to left, #000, transparent);
}
.hero__inner { position: relative; z-index: 1; max-width: 880px; }
.hero__eyebrow {
  font-family: "Saira Condensed", sans-serif;
  text-transform: uppercase;
  letter-spacing: .28em;
  font-weight: 600;
  color: var(--orange);
  font-size: 15px;
  margin-bottom: 18px;
}
.hero__title {
  font-family: "Anton", sans-serif;
  font-weight: 400;
  font-size: clamp(44px, 8vw, 104px);
  line-height: .94;
  letter-spacing: .01em;
  margin-bottom: 26px;
  text-shadow: 0 2px 0 rgba(0,0,0,.5);
}
.hero__title > span { display: block; }
.hero__title .amp { display: inline; color: var(--orange); -webkit-text-fill-color: var(--orange); margin-right: .12em; }

/* Grungy, stamped off-white headline — matches the reference banner */
.grunge {
  color: #f4f1e9;
  -webkit-text-fill-color: #f4f1e9;
  filter: url(#grunge);
}
@supports not (filter: url(#grunge)) {
  .grunge { filter: none; }
}
.hero__sub { color: var(--muted); font-size: 19px; max-width: 640px; margin-bottom: 34px; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.hero__chips { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; }
.hero__chips li {
  font-family: "Saira Condensed", sans-serif;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: 14px;
  color: var(--steel-2);
  padding: 8px 16px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255,255,255,.03), transparent);
}

/* ---------- Section scaffolding ---------- */
.section { padding: 92px 0; }
.section--alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section__head { max-width: 640px; margin: 0 auto 54px; text-align: center; }
.section__eyebrow {
  font-family: "Saira Condensed", sans-serif;
  text-transform: uppercase;
  letter-spacing: .26em;
  font-weight: 600;
  color: var(--orange);
  font-size: 14px;
  margin-bottom: 12px;
}
.section__title {
  font-family: "Anton", sans-serif;
  font-weight: 400;
  font-size: clamp(32px, 5vw, 54px);
  line-height: 1;
  letter-spacing: .01em;
}
.section__lead { color: var(--muted); font-size: 18px; margin-top: 16px; }
.proc-title { display: grid; grid-template-columns: auto auto auto; justify-content: center; row-gap: .04em; }
.proc-pair { display: grid; grid-template-columns: subgrid; grid-column: 1 / -1; column-gap: .30em; align-items: baseline; }
.proc-pair > :nth-child(1) { text-align: right; }
.proc-pair > :nth-child(3) { text-align: left; }
.proc-dot { text-align: center; color: #d7dbe0; -webkit-text-fill-color: #d7dbe0; }
@media (max-width: 600px) {
  .proc-title { display: block; }
  .proc-pair { display: block; }
  .proc-pair > span { display: inline; }
}

/* ---------- Capability cards ---------- */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.card {
  position: relative;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 26px 30px;
  overflow: hidden;
  text-align: center;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.card::before {
  content: "";
  position: absolute; left: 0; top: 0; height: 3px; width: 100%;
  background: linear-gradient(90deg, var(--orange), transparent);
  transform: scaleX(0); transform-origin: left;
  transition: transform .3s ease;
}
.card:hover { transform: translateY(-6px); border-color: var(--line-2); box-shadow: var(--shadow); }
.card:hover::before { transform: scaleX(1); }
.card__icon {
  display: inline-flex;
  align-items: center; justify-content: center;
  width: 64px; height: 64px;
  border-radius: var(--radius);
  background: linear-gradient(160deg, #24242a, #121215);
  border: 1px solid var(--line-2);
  color: var(--orange);
  margin: 0 auto 20px;
}
.card h3 { font-family: "Saira Condensed", sans-serif; text-transform: uppercase; letter-spacing: .05em; font-size: 22px; font-weight: 700; margin-bottom: 10px; color: #fff; }
.card p { color: var(--muted); font-size: 15px; }

/* ---------- Process strip ---------- */
.strip {
  padding: 92px 0;
  position: relative;
  background:
    radial-gradient(700px 360px at 50% -10%, rgba(237,106,31,.10), transparent 70%),
    linear-gradient(180deg, #0a0a0c, #0e0e11);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.process { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.process__step {
  background: rgba(255,255,255,.02);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  border-radius: var(--radius);
  padding: 26px 24px;
}
.process__num { font-family: "Anton", sans-serif; font-size: 34px; color: var(--orange-dk); line-height: 1; display: block; margin-bottom: 8px; opacity: .9; }
.process__step h3 { font-family: "Saira Condensed", sans-serif; text-transform: uppercase; letter-spacing: .05em; font-size: 21px; color: #fff; margin-bottom: 8px; }
.process__step p { color: var(--muted); font-size: 15px; }

/* ---------- About ---------- */
.about__grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
.about__copy .section__eyebrow,
.about__copy .section__title { text-align: left; }
.about__copy .section__title { margin-bottom: 20px; }
.about__copy p { color: var(--muted); font-size: 17px; margin-bottom: 18px; }
.about__copy .btn { margin-top: 8px; }
.about__stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
}
.stat__num { display: block; font-family: "Anton", sans-serif; font-size: 40px; color: #fff; line-height: 1; letter-spacing: .01em; }
.stat__unit { color: var(--orange); font-size: 22px; margin-left: 3px; }
.stat__label { display: block; margin-top: 10px; color: var(--muted); font-size: 13.5px; text-transform: uppercase; letter-spacing: .08em; font-family: "Saira Condensed", sans-serif; }

/* ---------- Industries ---------- */
.industries { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.industries li {
  font-family: "Saira Condensed", sans-serif;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  font-size: 16px;
  color: var(--steel-2);
  padding: 22px 18px;
  text-align: center;
  background: rgba(255,255,255,.02);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .2s, color .2s, transform .2s;
}
.industries li:hover { border-color: var(--orange); color: #fff; transform: translateY(-3px); }

/* ---------- Contact ---------- */
.contact { background: var(--bg-2); }
.contact__grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
.contact__intro .section__eyebrow,
.contact__intro .section__title,
.contact__intro .section__lead { text-align: left; }
.contact__intro .section__lead { margin-bottom: 28px; }
.contact__list { list-style: none; display: flex; flex-direction: column; gap: 16px; }
.contact__list li { display: flex; align-items: center; gap: 14px; font-size: 19px; font-family: "Saira Condensed", sans-serif; font-weight: 600; letter-spacing: .03em; }
.contact__list svg { color: var(--orange); flex-shrink: 0; }
.contact__list a:hover { color: var(--orange-2); }

.quote-form {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}
.field { margin-bottom: 18px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field label {
  display: block;
  font-family: "Saira Condensed", sans-serif;
  text-transform: uppercase;
  letter-spacing: .07em;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 7px;
}
.field label .req { color: var(--orange); }
.field input, .field select, .field textarea {
  width: 100%;
  background: #0c0c0e;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
  padding: 12px 14px;
  transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(237,106,31,.18);
}
.field textarea { resize: vertical; }
.field input.invalid, .field textarea.invalid { border-color: #e0483a; }
.form-note { margin-top: 14px; font-size: 14.5px; min-height: 20px; }
.form-note.ok { color: #5fd07a; }
.form-note.err { color: #e0705f; }

/* ---------- Footer ---------- */
.footer { background: #060607; border-top: 1px solid var(--line); padding-top: 56px; }
.footer__inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; padding-bottom: 40px; }
.footer__brand p { color: var(--muted-2); font-size: 14.5px; margin-top: 16px; max-width: 300px; }
.logo--footer .logo__mark { font-size: 24px; }
.logo--footer .logo__word { font-size: 18px; }
.footer__col h4 { font-family: "Saira Condensed", sans-serif; text-transform: uppercase; letter-spacing: .1em; font-size: 14px; color: var(--steel-2); margin-bottom: 16px; }
.footer__col a { display: block; color: var(--muted); font-size: 14.5px; padding: 5px 0; transition: color .2s; }
.footer__col a:hover { color: var(--orange-2); }
.footer__bar { border-top: 1px solid var(--line); padding: 20px 0; }
.footer__bar-inner { display: flex; justify-content: space-between; align-items: center; font-size: 13.5px; color: var(--muted-2); }
.footer__made { color: var(--muted); display: inline-flex; align-items: center; gap: 8px; }
.footer__made svg { border: 1px solid #2a2a30; border-radius: 2px; flex-shrink: 0; }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .cards, .process, .industries { grid-template-columns: repeat(2, 1fr); }
  .about__grid, .contact__grid { grid-template-columns: 1fr; gap: 40px; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .nav, .header__cta { display: none; }
  .nav-toggle { display: flex; }
  .topbar__contact { gap: 14px; }
  .topbar__flag strong { display: none; }
  .section { padding: 64px 0; }
  .strip { padding: 64px 0; }
  .hero { padding: 70px 0 64px; }
  .hero__actions { justify-content: center; }
  .hero__chips {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
  }
  .hero__chips li { text-align: center; }
}
@media (max-width: 520px) {
  .cards, .process, .industries, .field-row, .about__stats { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; gap: 26px; }
  .footer__bar-inner { flex-direction: column; gap: 8px; text-align: center; }
  .topbar__contact .topbar__link span { display: none; }
  .hero__sub { font-size: 17px; }
}