/* ==========================================================
   CEMTEC Smart Build – Senthel Aggregates and Cement Products
   ========================================================== */

:root {
  --navy: #203870;         /* logo */
  --navy-dark: #13244d;
  --ink: #0f1a33;
  --gold: #f8c800;         /* logo border */
  --gold-dark: #d6ac00;
  --grey: #eff1f4;
  --concrete: #d9dde3;
  --line: #e1e4ea;
  --text: #4a5263;
  --muted: #7b8395;
  --radius: 4px;
  --shadow: 0 12px 30px rgba(15, 26, 51, .1);
  --font-head: 'Barlow Condensed', 'Arial Narrow', Arial, sans-serif;
}

*,
*::before,
*::after { box-sizing: border-box; }

[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Barlow', Arial, Helvetica, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: #fff;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--navy); text-decoration: none; transition: color .2s, background-color .2s, border-color .2s; }
a:hover { color: var(--gold-dark); }

h1, h2, h3, h4 { margin: 0 0 .5em; font-family: var(--font-head); font-weight: 700; line-height: 1.15; color: var(--ink); }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.icon { width: 1em; height: 1em; fill: currentColor; flex: none; }

.skip-link { position: absolute; left: 12px; top: -60px; z-index: 300; padding: 8px 14px; background: var(--gold); color: var(--ink); }
.skip-link:focus { top: 12px; }

[id] { scroll-margin-top: 100px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 2px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .6px;
  text-transform: uppercase;
  line-height: 1.1;
  text-align: center;
  cursor: pointer;
}
.btn .icon { width: 18px; height: 18px; }
.btn-sm { padding: 8px 16px; font-size: 16px; }
.btn-gold { background: var(--gold); color: var(--ink); }
.btn-gold:hover { background: #fff; color: var(--navy); }
.btn-navy { background: var(--navy); color: #fff; }
.btn-navy:hover { background: var(--gold); color: var(--ink); }
.btn-outline { border-color: var(--navy); color: var(--navy); }
.btn-outline:hover { background: var(--navy); color: #fff; }
.btn-outline-light { border-color: rgba(255, 255, 255, .75); color: #fff; }
.btn-outline-light:hover { background: #fff; border-color: #fff; color: var(--navy); }

/* ---------- Top bar ---------- */
.topbar { background: var(--ink); color: #b6bfd3; font-size: 14px; }
.topbar-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 4px 24px; min-height: 38px; padding-block: 6px; }
.topbar p { margin: 0; }
.topbar ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px 22px; }
.topbar li { display: flex; align-items: center; gap: 7px; }
.topbar .icon { color: var(--gold); }
.topbar a { color: #fff; overflow-wrap: anywhere; }
.topbar a:hover { color: var(--gold); }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 100; background: #fff; border-bottom: 4px solid var(--gold); transition: box-shadow .3s; }
.site-header.is-scrolled { box-shadow: 0 6px 20px rgba(15, 26, 51, .12); }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 84px; }
.logo img { width: 190px; height: auto; }

.main-nav { display: flex; align-items: center; gap: 20px; }
.main-nav > ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 4px; }
.main-nav li { position: relative; }
.main-nav > ul > li > a {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 28px 14px;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .6px;
  text-transform: uppercase;
  color: var(--ink);
}
.main-nav > ul > li > a:hover,
.main-nav > ul > li.is-current > a { color: var(--navy); box-shadow: inset 0 -4px 0 var(--navy); }
.caret { width: 18px; height: 18px; fill: currentColor; }

.submenu {
  list-style: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  margin: 0;
  padding: 8px 0;
  background: #fff;
  border-top: 4px solid var(--navy);
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .2s, transform .2s, visibility .2s;
}
.has-sub:hover .submenu,
.has-sub:focus-within .submenu { opacity: 1; visibility: visible; transform: none; }
.submenu a { display: block; padding: 9px 18px; font-weight: 600; color: var(--ink); }
.submenu a:hover,
.submenu a[aria-current="page"] { background: var(--grey); color: var(--navy); }
.header-cta .icon { width: 16px; height: 16px; }

.nav-toggle { display: none; padding: 8px; background: none; border: 0; cursor: pointer; }
.nav-toggle span { display: block; width: 26px; height: 2px; margin: 6px 0; background: var(--ink); transition: transform .25s, opacity .25s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-block: 70px;
  background: var(--navy) linear-gradient(115deg, var(--navy-dark) 0%, var(--navy) 55%, #2a4a8f 100%);
  color: #d5dcec;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(135deg, rgba(255, 255, 255, .035) 0 2px, transparent 2px 18px);
}
.hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 50px; align-items: center; }
.hero .eyebrow { color: var(--gold); }
.hero h1 { margin: 0 0 18px; font-size: clamp(40px, 5.6vw, 66px); text-transform: uppercase; color: #fff; }
.hero-lead { max-width: 560px; margin-bottom: 28px; font-size: 19px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-points { list-style: none; margin: 30px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px 22px; font-weight: 600; color: #fff; }
.hero-points li { display: flex; align-items: center; gap: 8px; }
.hero-points .icon { color: var(--gold); width: 20px; height: 20px; }
.hero-media { position: relative; margin: 0; }
.hero-media::before { content: ""; position: absolute; inset: 18px -18px -18px 18px; border: 4px solid var(--gold); }
.hero-media img { position: relative; width: 100%; aspect-ratio: 2 / 1; object-fit: cover; box-shadow: 0 20px 40px rgba(0, 0, 0, .35); }

/* ---------- Sections ---------- */
.section { padding-block: 84px; }
.section-grey { background: var(--grey); }
.section-navy { background: var(--navy-dark); color: #c9d2e6; }
.section-navy h2 { color: #fff; }
.section-navy .eyebrow { color: var(--gold); }

.eyebrow {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--navy);
}
.section-head { max-width: 760px; margin-bottom: 36px; }
.section-head h2 { margin: 0; font-size: clamp(32px, 4vw, 46px); text-transform: uppercase; }
.section-head h2::after { content: ""; display: block; width: 64px; height: 5px; margin-top: 14px; background: var(--gold); }
.section-head .lead { margin: 16px 0 0; font-size: 19px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head.center h2::after { margin-inline: auto; }
.split .section-head,
.spotlight .section-head,
.prose .section-head { margin-bottom: 20px; }

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 60px; align-items: center; }
.split-top { align-items: start; }
.lead { font-size: 19px; }

.tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 2px 10px;
  background: var(--gold);
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--ink);
}
.card-link { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-head); font-size: 18px; font-weight: 700; letter-spacing: .5px; text-transform: uppercase; color: var(--navy); }
.card-link .icon { transition: transform .2s; }
.card-link:hover .icon { transform: translateX(4px); }
.detail-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 24px; }

/* ---------- Category cards ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; }
.cat-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.cat-card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); color: var(--text); transition: transform .25s, box-shadow .25s; }
.cat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); color: var(--text); }
.cat-media { position: relative; }
.cat-media img { width: 100%; aspect-ratio: 42 / 25; object-fit: cover; }
.cat-icon { display: grid; place-items: center; width: 54px; height: 54px; background: var(--gold); }
.cat-icon svg { width: 28px; height: 28px; fill: var(--navy-dark); }
.cat-media .cat-icon { position: absolute; left: 22px; bottom: -27px; }
.cat-body { display: flex; flex-direction: column; flex: 1; padding: 40px 24px 24px; }
.cat-body h3 { font-size: 28px; text-transform: uppercase; }
.cat-body p { margin-bottom: 12px; }
.cat-body ul { list-style: none; flex: 1; margin: 0 0 18px; padding: 0; font-size: 15px; }
.cat-body li { padding: 5px 0 5px 16px; border-top: 1px dashed var(--line); position: relative; }
.cat-body li::before { content: ""; position: absolute; left: 0; top: 14px; width: 7px; height: 7px; background: var(--navy); }
.cat-card.is-cta { justify-content: center; align-items: flex-start; padding: 34px 28px; background: var(--navy); border-color: var(--navy); color: #c9d2e6; }
.cat-card.is-cta:hover { transform: none; box-shadow: none; }
.cat-card.is-cta .cat-icon { margin-bottom: 18px; }
.cat-card.is-cta h3 { font-size: 28px; text-transform: uppercase; color: #fff; }
.cat-card.is-cta p { margin-bottom: 20px; }

/* ---------- Spotlight / figures ---------- */
.spotlight { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 60px; align-items: center; }
.figures { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.figures li { padding: 24px 22px; background: #fff; border-left: 5px solid var(--gold); }
.figures strong { display: block; font-family: var(--font-head); font-size: 38px; line-height: 1.1; color: var(--navy); }
.figures span { font-size: 15px; color: var(--muted); }

.sheet-preview { position: relative; display: block; justify-self: center; width: min(100%, 360px); padding: 14px; background: var(--grey); box-shadow: var(--shadow); }
.sheet-preview img { width: 100%; }
.sheet-preview span { position: absolute; left: 50%; bottom: 30px; transform: translateX(-50%); display: inline-flex; align-items: center; gap: 8px; padding: 8px 16px; background: var(--navy); font-family: var(--font-head); font-size: 17px; font-weight: 700; text-transform: uppercase; color: #fff; white-space: nowrap; }
.sheet-preview:hover span { background: var(--gold); color: var(--ink); }

.office-mini { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.office-mini li { padding: 18px 22px; background: rgba(255, 255, 255, .06); border-left: 4px solid var(--gold); }
.office-mini span { display: block; font-family: var(--font-head); font-size: 16px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--gold); }
.office-mini strong { font-weight: 500; color: #fff; }

/* ---------- CTA band ---------- */
.cta-band { padding-block: 54px; background: var(--navy) repeating-linear-gradient(135deg, rgba(255, 255, 255, .04) 0 2px, transparent 2px 18px); color: #c9d2e6; border-top: 5px solid var(--gold); }
.cta-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px 40px; }
.cta-band h2 { margin-bottom: 6px; font-size: clamp(28px, 3.4vw, 38px); text-transform: uppercase; color: #fff; }
.cta-band p { margin: 0; max-width: 640px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- Page hero ---------- */
.page-hero {
  padding-block: 64px 58px;
  background: linear-gradient(90deg, rgba(19, 36, 77, .97) 0%, rgba(32, 56, 112, .9) 55%, rgba(32, 56, 112, .55) 100%), url('../images/hero.jpg') right center / auto 100% no-repeat, var(--navy-dark);
  color: #d0d8ea;
  border-bottom: 5px solid var(--gold);
}
.page-hero h1 { margin: 0 0 10px; font-size: clamp(36px, 5vw, 58px); text-transform: uppercase; color: #fff; }
.page-hero p { max-width: 720px; margin: 0; font-size: 19px; }
.breadcrumb ol { list-style: none; margin: 0 0 14px; padding: 0; display: flex; flex-wrap: wrap; gap: 4px; font-size: 15px; }
.breadcrumb li + li::before { content: "/"; margin-right: 6px; color: #7d8bb0; }
.breadcrumb a { color: #fff; }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb [aria-current] { color: var(--gold); }

/* ---------- Company ---------- */
.tower { margin: 0; justify-self: center; width: min(100%, 340px); }
.tower img { width: 100%; box-shadow: 16px 16px 0 var(--gold); }
.tower figcaption { margin-top: 28px; font-size: 15px; color: var(--muted); }
.tower figcaption strong { display: block; font-family: var(--font-head); font-size: 22px; text-transform: uppercase; color: var(--ink); }
.group-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px 24px; }
.group-list li { display: flex; gap: 10px; align-items: flex-start; padding: 12px 16px; background: #fff; font-weight: 600; color: var(--ink); }
.group-list .icon { margin-top: 5px; fill: var(--navy); }
.office-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; }
.office { padding: 28px; border: 1px solid var(--line); border-top: 5px solid var(--navy); }
.office h3 { font-size: 26px; text-transform: uppercase; }
.office address { margin-bottom: 14px; font-style: normal; }

/* ---------- Category page ---------- */
.cat-layout { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 50px; align-items: start; }
.cat-side { position: sticky; top: 110px; padding: 24px; background: var(--grey); border-top: 5px solid var(--navy); }
.cat-side h2 { font-size: 22px; text-transform: uppercase; }
.cat-side ul { list-style: none; margin: 0 0 18px; padding: 0; }
.cat-side a { display: block; padding: 9px 0; border-bottom: 1px solid var(--concrete); font-weight: 600; color: var(--ink); }
.cat-side a:hover,
.cat-side a[aria-current="page"] { color: var(--navy); }
.cat-side a[aria-current="page"] { box-shadow: inset 4px 0 0 var(--gold); padding-left: 12px; }

.cat-intro { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 32px; align-items: center; margin-bottom: 20px; }
.cat-intro img { width: 100%; aspect-ratio: 42 / 25; object-fit: cover; }
.cat-intro .lead { margin-bottom: 16px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips a { padding: 6px 14px; background: var(--grey); border: 1px solid var(--line); font-family: var(--font-head); font-size: 17px; font-weight: 700; color: var(--navy); }
.chips a:hover { background: var(--navy); border-color: var(--navy); color: #fff; }

.product { padding-block: 44px; border-top: 1px solid var(--line); }
.product-head { max-width: 820px; margin-bottom: 24px; }
.product-head .code { display: inline-block; margin-bottom: 8px; padding: 3px 12px; background: var(--navy); font-family: var(--font-head); font-size: 17px; font-weight: 700; letter-spacing: 1px; color: #fff; }
.product-head h2 { font-size: clamp(30px, 3.4vw, 40px); text-transform: uppercase; }
.product-head .lead { margin: 0; color: var(--ink); }
.product-grid { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 40px; align-items: start; }
.product-grid.no-aside { grid-template-columns: minmax(0, 1fr); }
.prose h3 { margin-top: 1.3em; font-size: 24px; text-transform: uppercase; }
.prose h3:first-child { margin-top: 0; }
.product-photo { margin: 0 0 20px; }
.product-photo img { width: 100%; }

.spec-card { padding: 24px; background: var(--grey); border-top: 5px solid var(--gold); }
.spec-card h3 { font-size: 24px; text-transform: uppercase; }
.spec-card.is-photo { padding: 0; background: none; border: 0; }
.spec-card.is-photo .product-photo { margin: 0; }
.spec-list { margin: 0; }
.spec-list div { display: grid; grid-template-columns: minmax(0, 11em) minmax(0, 1fr); gap: 4px 14px; padding: 9px 0; border-bottom: 1px solid var(--concrete); }
.spec-list div:last-child { border-bottom: 0; }
.spec-list dt { font-weight: 700; color: var(--ink); }
.spec-list dd { margin: 0; }
.spec-card .spec-list div { grid-template-columns: minmax(0, 1fr); gap: 0; }
.spec-card .spec-list dt { font-size: 14px; letter-spacing: .4px; text-transform: uppercase; color: var(--muted); }
.spec-card .spec-list dd { font-weight: 600; color: var(--ink); }
.spec-note { margin: 12px 0 0; font-size: 14px; color: var(--muted); }

.ticks { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 20px; }
.ticks li { display: flex; gap: 10px; align-items: flex-start; }
.ticks .icon { width: 22px; height: 22px; padding: 4px; margin-top: 2px; background: var(--gold); fill: var(--ink); }

.msds { margin-top: 26px; border: 1px solid var(--line); background: #fff; }
.msds summary { display: flex; align-items: center; gap: 10px; padding: 14px 18px; background: var(--grey); font-family: var(--font-head); font-size: 20px; font-weight: 700; text-transform: uppercase; color: var(--navy); cursor: pointer; list-style: none; }
.msds summary::-webkit-details-marker { display: none; }
.msds summary::after { content: "+"; margin-left: auto; font-size: 26px; line-height: 1; }
.msds[open] summary::after { content: "\2212"; }
.msds summary .icon { width: 22px; height: 22px; }
.msds-body { padding: 8px 22px 22px; }
.msds-body h4 { margin: 18px 0 6px; font-size: 19px; text-transform: uppercase; color: var(--navy); }
.table-wrap { overflow-x: auto; }
.haz-table { width: 100%; border-collapse: collapse; font-size: 16px; }
.haz-table th,
.haz-table td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.haz-table thead th { background: var(--navy); color: #fff; font-family: var(--font-head); font-size: 17px; letter-spacing: .5px; text-transform: uppercase; }
.haz-table tbody th { width: 34%; color: var(--ink); }

.item-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; margin-top: 24px; }
.item { padding: 26px; border: 1px solid var(--line); border-top: 5px solid var(--navy); }
.item .cat-icon { margin-bottom: 14px; }
.item h2 { font-size: 30px; text-transform: uppercase; }
.item p { margin: 0; }

.also { margin-top: 30px; padding: 28px 30px; background: var(--navy); color: #c9d2e6; }
.also h2 { font-size: 28px; text-transform: uppercase; color: #fff; }
.also ul { list-style: none; margin: 0 0 20px; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.also li { padding: 6px 14px; background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .2); font-weight: 600; color: #fff; }
.also .btn-navy { background: var(--gold); color: var(--ink); }
.also .btn-navy:hover { background: #fff; }

/* ---------- Downloads ---------- */
.doc-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; }
.doc-card { display: flex; gap: 18px; padding: 26px; border: 1px solid var(--line); border-top: 5px solid var(--gold); }
.doc-card h3 { font-size: 24px; text-transform: uppercase; }
.doc-card p { margin: 0; }
.doc-card .detail-actions { margin-top: 18px; }
.doc-icon { display: grid; place-items: center; flex: none; width: 52px; height: 52px; background: var(--navy); }
.doc-icon svg { width: 26px; height: 26px; fill: var(--gold); }
.doc-icon.small { width: 44px; height: 44px; }
.doc-icon.small svg { width: 22px; height: 22px; }
.msds-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.msds-list li { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; padding: 16px 20px; background: #fff; }
.msds-list li > div { flex: 1; min-width: 200px; }
.msds-list strong { display: block; font-family: var(--font-head); font-size: 22px; text-transform: uppercase; color: var(--ink); }
.msds-list span { color: var(--muted); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; }
.contact-card { display: flex; flex-direction: column; padding: 28px; border: 1px solid var(--line); border-top: 5px solid var(--navy); }
.contact-card.is-main { border-top-color: var(--gold); }
.contact-card h2 { font-size: 28px; text-transform: uppercase; }
.contact-card address { margin-bottom: 14px; font-style: normal; }
.contact-lines { list-style: none; margin: 0 0 20px; padding: 0; display: grid; gap: 8px; }
.contact-lines li { display: flex; gap: 10px; align-items: center; }
.contact-lines .icon { color: var(--navy); }
.contact-lines a { font-weight: 700; color: var(--ink); overflow-wrap: anywhere; }
.contact-lines a:hover { color: var(--navy); }
.map { margin-top: auto; }
.map iframe { display: block; width: 100%; height: 240px; border: 0; }
.office-photo { margin-top: auto; width: 100%; height: 240px; object-fit: cover; object-position: center 20%; }

.enquiry-box { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px 40px; margin-top: 28px; padding: 30px; background: var(--grey); border-left: 6px solid var(--gold); }
.enquiry-box h2 { margin-bottom: 6px; font-size: 30px; text-transform: uppercase; }
.enquiry-box p { max-width: 620px; margin: 0; }
.enquiry-box .detail-actions { margin-top: 0; }
.enquiry-box .btn { text-transform: none; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: #a3adc4; font-size: 16px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr .8fr 1.4fr; gap: 40px; padding-block: 60px 44px; }
.footer-grid > div { min-width: 0; }
.site-footer h2 { margin-bottom: 16px; font-size: 22px; letter-spacing: .8px; text-transform: uppercase; color: #fff; }
.footer-logo { display: inline-block; margin-bottom: 18px; padding: 8px 10px; background: #fff; }
.footer-logo img { width: 170px; }
.footer-note { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; color: var(--gold); }
.footer-note:hover { color: #fff; }
.footer-links { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.footer-links a { color: #d3d9e6; }
.footer-links a:hover { color: var(--gold); }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact .icon { margin-top: 5px; color: var(--gold); }
.footer-contact a { overflow-wrap: anywhere; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); font-size: 14px; }
.footer-bottom .container { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 20px; padding-block: 18px; }
.footer-bottom p { margin: 0; }
.footer-bottom a { color: #fff; }
.footer-bottom a:hover { color: var(--gold); }

/* ---------- Back to top ---------- */
.go-top { position: fixed; right: 20px; bottom: 20px; z-index: 200; display: grid; place-items: center; width: 46px; height: 46px; background: var(--navy); border: 2px solid var(--gold); opacity: 0; visibility: hidden; transition: opacity .3s, visibility .3s, background-color .2s; }
.go-top.is-visible { opacity: 1; visibility: visible; }
.go-top:hover { background: var(--gold); }
.go-top svg { width: 28px; height: 28px; fill: #fff; }

/* ---------- Lightbox ---------- */
.lightbox { position: fixed; inset: 0; z-index: 400; display: flex; align-items: center; justify-content: center; padding: 60px 20px; background: rgba(10, 16, 32, .94); }
.lightbox figure { margin: 0; max-width: 100%; max-height: 100%; text-align: center; }
.lightbox img { max-width: 100%; max-height: calc(100vh - 150px); margin: 0 auto; }
.lightbox figcaption { margin-top: 12px; color: #dde3ef; }
.lb-btn { position: absolute; display: grid; place-items: center; width: 46px; height: 46px; padding: 0; border: 0; background: rgba(255, 255, 255, .14); cursor: pointer; }
.lb-btn:hover { background: var(--gold); }
.lb-btn svg { width: 26px; height: 26px; fill: #fff; }
.lb-close { top: 16px; right: 16px; }
body.lb-open { overflow: hidden; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 12px 20px rgba(15, 26, 51, .12);
    transition: max-height .35s ease;
  }
  .main-nav.is-open { max-height: calc(100vh - 84px); overflow-y: auto; border-bottom: 4px solid var(--gold); }
  .main-nav > ul { flex-direction: column; gap: 0; padding: 0 20px; }
  .main-nav > ul > li > a { padding: 12px 4px; border-top: 1px solid var(--line); }
  .main-nav > ul > li > a:hover,
  .main-nav > ul > li.is-current > a { box-shadow: none; color: var(--navy); }
  .caret { display: none; }
  .submenu { position: static; min-width: 0; padding: 0 0 8px 14px; border-top: 0; box-shadow: none; opacity: 1; visibility: visible; transform: none; }
  .submenu a { padding: 6px 4px; }
  .header-cta { margin: 10px 20px 20px; }

  .cat-grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cat-layout { grid-template-columns: minmax(0, 1fr); gap: 30px; }
  .cat-side { position: static; }
  .cat-side ul { display: flex; flex-wrap: wrap; gap: 0 18px; }
  .product-grid { grid-template-columns: minmax(0, 1fr) 300px; }
  .doc-grid,
  .contact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  .section { padding-block: 64px; }
  .hero-grid,
  .split,
  .spotlight,
  .cat-intro,
  .product-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .hero-media { margin-right: 18px; }
  .cat-grid,
  .office-grid,
  .item-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .group-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .topbar p { display: none; }
  .topbar-row { justify-content: center; }
  .header-row { min-height: 70px; }
  .logo img { width: 150px; }
  .main-nav.is-open { max-height: calc(100vh - 70px); }

  .hero { padding-block: 50px 60px; }
  .hero-lead { font-size: 17px; }
  .hero-actions .btn { width: 100%; }
  .section { padding-block: 52px; }
  .cat-grid,
  .cat-grid.four,
  .office-grid,
  .item-grid,
  .group-list,
  .doc-grid,
  .contact-grid,
  .ticks { grid-template-columns: minmax(0, 1fr); }
  .figures strong { font-size: 30px; }
  .figures li { padding: 18px 16px; }
  .spec-list div { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .msds-body { padding: 4px 16px 18px; }
  .haz-table { font-size: 15px; }
  .doc-card { flex-direction: column; }
  .also { padding: 24px 20px; }
  .enquiry-box { padding: 24px 20px; }
  .enquiry-box .btn,
  .cta-actions,
  .cta-actions .btn,
  .detail-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 32px; padding-block: 48px 36px; }
  .footer-bottom .container { flex-direction: column; text-align: center; }
  .go-top { right: 14px; bottom: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .cat-card { transition: none; }
}