/* ============================================================
   TMT STEEL — Design tokens
   Display: Oswald (condensed, industrial signage feel)
   Body:    Barlow
   Mono:    JetBrains Mono (for specs / weights / measurements)
   Colors:  Charcoal steel / Molten orange / Concrete white / Rebar silver
   ============================================================ */

:root{
  --charcoal: #1C2128;
  --charcoal-2: #262D37;
  --steel: #4A5568;
  --steel-light: #7B8898;
  --orange: #E8590C;
  --orange-dark: #C24A08;
  --concrete: #F5F2EC;
  --concrete-2: #EBE7DE;
  --silver: #C4C9D1;
  --white: #FFFFFF;
  --line: rgba(196,201,209,0.18);
  --line-dark: rgba(28,33,40,0.12);

  --font-display: 'Oswald', sans-serif;
  --font-body: 'Barlow', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius: 3px;
}

*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family: var(--font-body);
  background: var(--concrete);
  color: var(--charcoal);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%; display:block;}
a{color:inherit; text-decoration:none;}
ul{list-style:none;}

.container{
  max-width:1180px;
  margin:0 auto;
  padding:0 28px;
}

h1,h2,h3,h4{
  font-family: var(--font-display);
  text-transform:uppercase;
  letter-spacing:0.02em;
  line-height:1.12;
  font-weight:600;
}

.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--orange);
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:26px; height:2px;
  background:var(--orange);
  display:inline-block;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-display);
  text-transform:uppercase;
  letter-spacing:0.05em;
  font-size:15px;
  font-weight:600;
  padding:14px 28px;
  border-radius:var(--radius);
  border:2px solid transparent;
  cursor:pointer;
  transition:transform .15s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{
  background:var(--orange);
  color:var(--white);
}
.btn-primary:hover{background:var(--orange-dark);}
.btn-outline{
  background:transparent;
  border-color:var(--charcoal);
  color:var(--charcoal);
}
.btn-outline:hover{background:var(--charcoal); color:var(--white);}
.btn-outline-light{
  background:transparent;
  border-color:rgba(255,255,255,0.4);
  color:var(--white);
}
.btn-outline-light:hover{border-color:var(--white); background:rgba(255,255,255,0.08);}
.btn-block{width:100%; justify-content:center;}

/* ---------- Top utility bar ---------- */
.topbar{
  background:var(--charcoal);
  color:var(--silver);
  font-family:var(--font-mono);
  font-size:12.5px;
}
.topbar .container{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding-top:8px;
  padding-bottom:8px;
  flex-wrap:wrap;
  gap:6px;
}
.topbar a{color:var(--silver);}
.topbar a:hover{color:var(--orange);}
.topbar .divider{opacity:0.35; margin:0 4px;}

/* ---------- Header ---------- */
header.main-header{
  background:var(--charcoal-2);
  border-bottom:1px solid var(--line);
  position:sticky;
  top:0;
  z-index:60;
}
.nav-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:16px 0;
}
.logo{
  font-family:var(--font-display);
  color:var(--white);
  font-size:22px;
  letter-spacing:0.02em;
  text-transform:uppercase;
  display:flex;
  flex-direction:column;
  line-height:1.1;
}
.logo span{
  font-family:var(--font-mono);
  font-size:10.5px;
  color:var(--orange);
  letter-spacing:0.18em;
  margin-top:3px;
  text-transform:uppercase;
}
nav.main-nav ul{
  display:flex;
  gap:32px;
}
nav.main-nav a{
  font-family:var(--font-display);
  font-size:14.5px;
  letter-spacing:0.04em;
  text-transform:uppercase;
  color:var(--silver);
  transition:color .2s;
}
nav.main-nav a:hover{color:var(--orange);}
.header-actions{display:flex; align-items:center; gap:14px;}
.header-call{
  display:flex; align-items:center; gap:8px;
  color:var(--white);
  font-family:var(--font-mono);
  font-size:14px;
}
.header-call svg{flex-shrink:0;}

.menu-toggle{
  display:none;
  background:none; border:none;
  color:var(--white);
  font-size:26px;
  cursor:pointer;
}

/* ---------- Hero ---------- */
.hero{
  background:var(--charcoal);
  color:var(--white);
  position:relative;
  overflow:hidden;
  padding:78px 0 0;
}
.hero::before{
  /* rebar rib texture, faint */
  content:"";
  position:absolute; inset:0;
  background-image:repeating-linear-gradient(115deg, rgba(232,89,12,0.05) 0px, rgba(232,89,12,0.05) 2px, transparent 2px, transparent 42px);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:50px;
  align-items:center;
  padding-bottom:56px;
}
.hero h1{
  font-size:clamp(38px, 5.4vw, 64px);
  color:var(--white);
  margin-bottom:20px;
}
.hero h1 em{
  font-style:normal;
  color:var(--orange);
}
.hero p.lead{
  color:var(--silver);
  font-size:17px;
  max-width:480px;
  margin-bottom:30px;
}
.hero-ctas{display:flex; gap:14px; flex-wrap:wrap; margin-bottom:34px;}
.hero-trustline{
  display:flex; gap:26px; flex-wrap:wrap;
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--steel-light);
}
.hero-trustline strong{color:var(--white); font-weight:600;}

/* Brand chips inside hero */
.brand-chip-row{display:flex; gap:10px; flex-wrap:wrap; margin-top:6px;}
.brand-chip{
  border:1px solid var(--line);
  color:var(--silver);
  font-family:var(--font-mono);
  font-size:12px;
  padding:6px 12px;
  border-radius:20px;
}

/* Hero visual: rebar diameter stack */
.hero-visual{
  position:relative;
  padding:20px 0;
}
.rebar-stack{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.rebar-row{
  display:flex;
  align-items:center;
  gap:14px;
}
.rebar-row .dia-label{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--steel-light);
  width:38px;
  text-align:right;
  flex-shrink:0;
}
.rebar-bar{
  background:linear-gradient(180deg, #D8DCE2 0%, #9AA3AF 45%, #6B7583 100%);
  border-radius:20px;
  position:relative;
  box-shadow: inset 0 -3px 6px rgba(0,0,0,0.25), inset 0 2px 2px rgba(255,255,255,0.4);
}
.rebar-bar::after{
  /* rib marks */
  content:"";
  position:absolute; inset:0;
  background-image:repeating-linear-gradient(115deg, transparent 0 6px, rgba(0,0,0,0.12) 6px 8px);
  border-radius:20px;
}
.rebar-row .weight{
  font-family:var(--font-mono);
  font-size:11.5px;
  color:var(--steel-light);
  flex-shrink:0;
  margin-left:auto;
}

/* ---------- Section basics ---------- */
section{padding:84px 0;}
.section-head{
  max-width:640px;
  margin-bottom:48px;
}
.section-head h2{font-size:clamp(28px,3.6vw,42px);}
.section-head p{color:var(--steel); font-size:16px; margin-top:14px;}

.section-dark{background:var(--charcoal); color:var(--white);}
.section-dark .section-head p{color:var(--silver);}
.section-alt{background:var(--concrete-2);}

/* ---------- Brands ---------- */
.brand-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:22px;
}
.brand-card{
  background:var(--white);
  border:1px solid var(--line-dark);
  border-radius:var(--radius);
  padding:32px 26px;
  position:relative;
  transition:box-shadow .2s ease, transform .2s ease;
}
.brand-card:hover{box-shadow:0 14px 30px rgba(28,33,40,0.1); transform:translateY(-3px);}
.brand-card .brand-tag{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--orange);
  letter-spacing:0.1em;
  text-transform:uppercase;
  margin-bottom:10px;
  display:block;
}
.brand-card h3{
  font-size:24px;
  margin-bottom:12px;
}
.brand-card p{color:var(--steel); font-size:14.5px; margin-bottom:18px;}
.brand-specs{
  display:flex;
  gap:18px;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--charcoal);
  border-top:1px dashed var(--line-dark);
  padding-top:14px;
}
.brand-specs div span{display:block; color:var(--steel); font-size:10.5px; text-transform:uppercase; letter-spacing:0.06em; margin-bottom:3px;}

/* ---------- TMT size chart (signature element) ---------- */
.size-chart{
  background:var(--white);
  border:1px solid var(--line-dark);
  border-radius:var(--radius);
  padding:36px 32px;
}
.size-chart-table{
  width:100%;
  border-collapse:collapse;
  font-family:var(--font-mono);
  font-size:13.5px;
}
.size-chart-table th{
  text-align:left;
  font-family:var(--font-display);
  text-transform:uppercase;
  letter-spacing:0.05em;
  font-size:12.5px;
  color:var(--steel);
  padding:10px 12px;
  border-bottom:2px solid var(--charcoal);
}
.size-chart-table td{
  padding:14px 12px;
  border-bottom:1px solid var(--line-dark);
  vertical-align:middle;
}
.size-chart-table tr:hover td{background:var(--concrete);}
.dia-visual{display:flex; align-items:center;}
.dia-visual .dot{
  border-radius:50%;
  background:linear-gradient(180deg,#D8DCE2,#8892A0);
  box-shadow: inset -2px -2px 4px rgba(0,0,0,0.3), inset 2px 2px 3px rgba(255,255,255,0.5);
}
.use-tag{
  display:inline-block;
  font-size:11px;
  padding:3px 9px;
  border-radius:12px;
  background:var(--concrete-2);
  color:var(--steel);
  font-family:var(--font-mono);
}

/* ---------- Why us ---------- */
.why-grid{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:2px;
  background:var(--line-dark);
  border:1px solid var(--line-dark);
}
.why-item{
  background:var(--white);
  padding:34px 26px;
}
.why-item .num{
  font-family:var(--font-mono);
  color:var(--orange);
  font-size:13px;
  margin-bottom:16px;
  display:block;
}
.why-item h3{font-size:18px; margin-bottom:10px;}
.why-item p{font-size:14px; color:var(--steel);}

/* ---------- Process ---------- */
.process-row{
  display:flex;
  align-items:stretch;
  gap:0;
}
.process-step{
  flex:1;
  position:relative;
  padding:0 22px 0 0;
}
.process-step:not(:last-child)::after{
  content:"→";
  position:absolute;
  right:-4px; top:6px;
  color:var(--orange);
  font-size:20px;
}
.process-step .step-no{
  font-family:var(--font-mono);
  font-size:34px;
  color:var(--silver);
  font-weight:600;
  display:block;
  margin-bottom:14px;
}
.process-step h4{font-size:16px; margin-bottom:8px; color:var(--white);}
.process-step p{font-size:13.5px; color:var(--steel-light);}

/* ---------- Contact ---------- */
.contact-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:50px;
}
.contact-card{
  background:var(--white);
  border:1px solid var(--line-dark);
  border-radius:var(--radius);
  padding:30px;
}
.contact-card h3{font-size:16px; margin-bottom:6px;}
.contact-card p{color:var(--steel); font-size:14.5px; margin-bottom:20px;}
.contact-detail{
  display:flex;
  gap:14px;
  padding:16px 0;
  border-top:1px solid var(--line-dark);
}
.contact-detail:first-of-type{border-top:none;}
.contact-detail .icon{
  width:36px; height:36px;
  background:var(--concrete-2);
  border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  flex-shrink:0;
  color:var(--orange);
}
.contact-detail strong{display:block; font-size:14px; margin-bottom:3px;}
.contact-detail span, .contact-detail a{font-size:14px; color:var(--steel);}

.enquiry-form{
  background:var(--charcoal);
  border-radius:var(--radius);
  padding:34px;
  color:var(--white);
}
.enquiry-form h3{color:var(--white); font-size:20px; margin-bottom:6px;}
.enquiry-form p{color:var(--silver); font-size:14px; margin-bottom:24px;}
.form-row{margin-bottom:16px;}
.form-row label{
  display:block;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:0.06em;
  text-transform:uppercase;
  color:var(--steel-light);
  margin-bottom:7px;
}
.form-row input, .form-row select, .form-row textarea{
  width:100%;
  background:var(--charcoal-2);
  border:1px solid var(--line);
  color:var(--white);
  padding:12px 14px;
  border-radius:var(--radius);
  font-family:var(--font-body);
  font-size:14.5px;
}
.form-row input::placeholder, .form-row textarea::placeholder{color:var(--steel);}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus{
  outline:2px solid var(--orange);
  outline-offset:1px;
}

/* ---------- Footer ---------- */
footer{
  background:var(--charcoal);
  color:var(--silver);
  padding:56px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid var(--line);
}
.footer-grid h4{
  color:var(--white);
  font-size:14px;
  margin-bottom:18px;
}
.footer-grid p{font-size:13.5px; color:var(--steel-light); max-width:340px; margin-bottom:16px;}
.footer-grid li{margin-bottom:10px; font-size:14px;}
.footer-grid a:hover{color:var(--orange);}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:22px 0;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--steel-light);
  flex-wrap:wrap;
  gap:10px;
}
.footer-bottom a{margin-left:16px;}

/* ---------- Floating sidebar call/enquiry button ---------- */
.side-actions{
  position:fixed;
  right:0;
  top:50%;
  transform:translateY(-50%);
  z-index:70;
  display:flex;
  flex-direction:column;
}
.side-actions a{
  display:flex;
  align-items:center;
  gap:9px;
  background:var(--orange);
  color:var(--white);
  font-family:var(--font-display);
  text-transform:uppercase;
  font-size:13px;
  letter-spacing:0.04em;
  padding:13px 16px;
  writing-mode:horizontal-tb;
  border-bottom:1px solid rgba(0,0,0,0.15);
  box-shadow:-3px 0 10px rgba(0,0,0,0.18);
  transition:background .2s, padding-right .2s;
}
.side-actions a:hover{background:var(--orange-dark); padding-right:22px;}
.side-actions a.enquiry-side{background:var(--charcoal);}
.side-actions a.enquiry-side:hover{background:#000;}

/* ---------- Call popup modal ---------- */
.call-popup-backdrop{
  position:fixed; inset:0;
  background:rgba(17,20,24,0.72);
  display:flex; align-items:center; justify-content:center;
  z-index:100;
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease;
  padding:20px;
}
.call-popup-backdrop.show{opacity:1; visibility:visible;}
.call-popup{
  background:var(--charcoal);
  border:1px solid var(--line);
  border-top:4px solid var(--orange);
  border-radius:var(--radius);
  max-width:420px;
  width:100%;
  padding:36px 32px 30px;
  position:relative;
  color:var(--white);
  transform:translateY(14px) scale(0.98);
  transition:transform .25s ease;
}
.call-popup-backdrop.show .call-popup{transform:translateY(0) scale(1);}
.call-popup-close{
  position:absolute; top:14px; right:16px;
  background:none; border:none;
  color:var(--steel-light);
  font-size:22px;
  cursor:pointer;
  line-height:1;
}
.call-popup-close:hover{color:var(--white);}
.call-popup .eyebrow{margin-bottom:12px;}
.call-popup h3{font-size:24px; color:var(--white); margin-bottom:10px;}
.call-popup p{color:var(--silver); font-size:14.5px; margin-bottom:22px;}
.call-popup .popup-phone{
  display:flex; align-items:center; justify-content:center; gap:10px;
  font-family:var(--font-mono);
  font-size:22px;
  color:var(--orange);
  margin-bottom:16px;
}

/* ---------- Legal pages ---------- */
.legal-hero{
  background:var(--charcoal);
  color:var(--white);
  padding:56px 0 44px;
}
.legal-hero .eyebrow{margin-bottom:14px;}
.legal-hero h1{font-size:clamp(28px,4vw,42px);}
.legal-hero p{color:var(--silver); margin-top:10px; font-family:var(--font-mono); font-size:13px;}
.legal-body{padding:56px 0 90px;}
.legal-body .container{max-width:820px;}
.legal-body h2{
  font-size:20px;
  margin-top:38px;
  margin-bottom:14px;
  padding-bottom:10px;
  border-bottom:2px solid var(--charcoal);
}
.legal-body h2:first-child{margin-top:0;}
.legal-body p{color:var(--charcoal); margin-bottom:14px; font-size:15px;}
.legal-body ul{margin:0 0 14px 0;}
.legal-body li{
  color:var(--charcoal);
  font-size:15px;
  margin-bottom:8px;
  padding-left:20px;
  position:relative;
}
.legal-body li::before{
  content:"—";
  position:absolute; left:0;
  color:var(--orange);
}
.legal-body strong{font-weight:600;}
.legal-note{
  background:var(--concrete-2);
  border-left:3px solid var(--orange);
  padding:16px 20px;
  font-size:14px;
  color:var(--steel);
  margin:20px 0;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px){
  .hero-grid{grid-template-columns:1fr; gap:36px;}
  .brand-grid{grid-template-columns:1fr;}
  .why-grid{grid-template-columns:1fr 1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .process-row{flex-direction:column; gap:26px;}
  .process-step::after{display:none;}
  nav.main-nav{
    position:absolute;
    top:100%; left:0; right:0;
    background:var(--charcoal-2);
    border-top:1px solid var(--line);
    display:none;
    flex-direction:column;
    padding:10px 0;
  }
  nav.main-nav.open{display:flex;}
  nav.main-nav ul{flex-direction:column; gap:0;}
  nav.main-nav li{border-bottom:1px solid var(--line);}
  nav.main-nav a{display:block; padding:14px 28px;}
  .menu-toggle{display:block;}
  .header-call span.call-text{display:none;}
  .side-actions a span.side-text{display:none;}
  .side-actions a{padding:14px;}
}
@media (max-width: 620px){
  .why-grid{grid-template-columns:1fr;}
  .size-chart{padding:22px 16px; overflow-x:auto;}
  .size-chart-table{min-width:520px;}
}