/* Asia Gulf Trading. Rust and amber palette from the company presentation. */
:root {
  --ink: #1d2023;
  --ink-2: #2b2f32;
  --paper: #ffffff;
  --tint: #f1f2f1;
  --line: #d9dbd9;
  --muted: #565c60;
  --rust: #ba5a2d;
  --rust-deep: #9c4820;
  --amber: #e48312;
  --on-dark: #eceae6;
  --on-dark-muted: #a9adae;
  --line-dark: #3b4044;
  --sans: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --display: "IBM Plex Sans Condensed", "IBM Plex Sans", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  --header-h: 68px;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 1.0625rem/1.6 var(--sans); }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 30; background: var(--paper); }
img, svg { max-width: 100%; display: block; }
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; padding: 0; }
ul, ol { list-style: none; }
a { color: inherit; }
h1, h2 { font-family: var(--display); font-weight: 600; line-height: 1.08; letter-spacing: -.01em; text-wrap: balance; }
h1 { font-size: clamp(2.6rem, 6.4vw, 4.75rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font: 600 1.125rem/1.3 var(--sans); }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }

.wrap {
  width: 100%; max-width: 1240px; margin-inline: auto;
  padding-left: max(24px, env(safe-area-inset-left, 0px));
  padding-right: max(24px, env(safe-area-inset-right, 0px));
}
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.section { padding-block: clamp(64px, 9vw, 112px); }
.section-head { display: grid; gap: 16px; max-width: 760px; margin-bottom: 48px; }
.eyebrow { display: block; font: 500 .8125rem/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--rust-deep); }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: clamp(40px, 6vw, 88px); align-items: start; }
.split > div:first-child { display: grid; gap: 18px; min-width: 0; }
.split.even { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.split.even > div { display: grid; gap: 18px; align-content: start; }

.tint { background: var(--tint); }
.dark { background: var(--ink); color: var(--on-dark); }
.dark .eyebrow { color: var(--amber); }
.rust { background: var(--rust-deep); color: #fff; }
.rust .eyebrow { color: #ffd9a8; }

/* Buttons */
.btn {
  display: inline-block; padding: 14px 24px; border: 1px solid var(--rust); background: var(--rust); color: #fff;
  font: 600 1rem/1.2 var(--sans); text-decoration: none; cursor: pointer; transition: background .15s, border-color .15s;
}
.btn:hover { background: var(--rust-deep); border-color: var(--rust-deep); }
.btn-small { padding: 10px 16px; font-size: .9375rem; white-space: nowrap; }
.btn-ghost { background: transparent; border-color: #80868a; color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, .1); border-color: #fff; }

/* Header */
.site-header { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: var(--paper); border-bottom: 1px solid var(--line); }
.header-row { display: flex; align-items: center; gap: 24px; min-height: var(--header-h); }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; margin-right: auto; }
.brand-mark { font: 600 1.75rem/1 var(--display); color: var(--rust); letter-spacing: .02em; }
.brand-name { font: 500 .875rem/1.2 var(--sans); color: var(--muted); border-left: 1px solid var(--line); padding-left: 12px; }
.site-nav { display: flex; gap: 22px; }
.site-nav a { font-size: .9375rem; font-weight: 500; text-decoration: none; padding-block: 6px; white-space: nowrap; }
.site-nav a:hover { color: var(--rust); }
.header-actions { display: flex; align-items: center; gap: 14px; }
.lang { display: flex; border: 1px solid var(--line); }
.lang button { border: 0; background: none; padding: 7px 10px; font: 500 .8125rem/1 var(--mono); color: var(--muted); cursor: pointer; }
.lang button[aria-pressed="true"] { background: var(--ink); color: #fff; }
.menu-toggle { display: none; order: 3; border: 1px solid var(--line); background: none; padding: 9px 12px; font: 500 .875rem/1 var(--sans); color: var(--ink); cursor: pointer; }

/* Hero */
.hero { position: relative; overflow: hidden; background: var(--ink); color: #fff; }
.hero-pit { position: absolute; top: 50%; right: -14%; width: min(1240px, 96%); max-width: none; transform: translateY(-50%); pointer-events: none; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, var(--ink) 26%, rgba(29, 32, 35, .78) 52%, rgba(29, 32, 35, 0) 82%); }
.hero-inner { position: relative; z-index: 1; display: grid; gap: 24px; padding-block: clamp(64px, 9vw, 120px) 40px; }
.hero h1 { max-width: 13em; }
.hero .kicker { font: 500 .875rem/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--amber); }
.lede { max-width: 34em; font-size: 1.1875rem; color: var(--on-dark); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; margin-top: clamp(32px, 6vw, 72px); padding-top: 24px; border-top: 1px solid #4a5054; }
.hero-facts dt { font: 600 2.25rem/1.1 var(--display); color: #fff; }
.hero-facts dd { font-size: .9375rem; line-height: 1.45; color: var(--on-dark-muted); max-width: 24em; margin-top: 6px; }

/* Values */
.values { padding-block: 56px; border-bottom: 1px solid var(--line); }
.value-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; }
.value-grid li { display: grid; gap: 8px; align-content: start; }
.value-grid p { color: var(--muted); }

/* Lists */
.ticks { display: grid; gap: 10px; }
.ticks li, .plain li { position: relative; padding-left: 22px; }
.ticks li::before, .plain li::before { content: ""; position: absolute; left: 0; top: .68em; width: 10px; height: 2px; background: var(--rust); }
.plain { display: grid; gap: 10px; }

/* Mongolia map */
.mn-map { display: grid; gap: 18px; min-width: 0; }
.mn-map text { font: 500 14px var(--mono); fill: var(--ink); paint-order: stroke; stroke: var(--paper); stroke-width: 3px; stroke-linejoin: round; }
.mn-map text.km { font-size: 12px; fill: var(--rust-deep); }
.route { fill: none; stroke: var(--rust); stroke-width: 2; stroke-dasharray: 6 4; }
.pin { fill: var(--rust); stroke: #fff; stroke-width: 2; }
.pin-mine { fill: var(--amber); }
.mn-map figcaption { display: grid; gap: 6px; font-size: .9375rem; color: var(--muted); border-top: 1px solid var(--line); padding-top: 14px; }

/* Sourcing */
.sourcing { display: grid; gap: 8px; min-width: 0; }

/* Supply chain */
.chain { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); counter-reset: step; margin-bottom: 56px; border-top: 3px solid var(--rust); }
.chain li { counter-increment: step; position: relative; padding: 18px 12px 0 0; font: 600 1.25rem/1.2 var(--display); }
.chain li::before { content: counter(step); display: block; font: 500 .8125rem/1 var(--mono); color: var(--rust-deep); margin-bottom: 10px; }
.chain li::after { content: ""; position: absolute; top: -8px; left: 0; width: 13px; height: 13px; background: var(--rust); border: 3px solid var(--paper); border-radius: 50%; }
.three { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; }
.three > div { display: grid; gap: 14px; align-content: start; }

/* Track record */
.record { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: clamp(40px, 6vw, 88px); }
.record > div { display: grid; gap: 18px; align-content: start; min-width: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.chips li { border: 1px solid #b9bcba; padding: 6px 12px; font-size: .9375rem; background: var(--paper); }
.brands { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 20px; }
.brands li { padding-block: 7px; border-top: 1px solid var(--line); font-size: .9375rem; font-weight: 500; }
.note { font-size: .8125rem; color: var(--muted); }

/* Tabs */
.tabs { display: flex; flex-wrap: wrap; gap: 4px 28px; border-bottom: 1px solid var(--line); margin-bottom: 8px; }
.tabs button { border: 0; background: none; padding: 12px 0; margin-bottom: -1px; border-bottom: 3px solid transparent; font: 500 1rem/1.3 var(--sans); color: var(--muted); cursor: pointer; text-align: left; }
.tabs button:hover { color: var(--ink); }
.tabs button[aria-selected="true"] { color: var(--ink); font-weight: 600; border-bottom-color: var(--rust); }
.panel-intro { padding-top: 20px; color: var(--muted); }
.spec > div { display: grid; grid-template-columns: minmax(0, 260px) minmax(0, 1fr); gap: 8px 32px; padding-block: 16px; border-bottom: 1px solid var(--line); }
.spec dt { font-weight: 600; }
.spec dd { max-width: 62ch; }
code { font: 500 .875em var(--mono); color: var(--rust-deep); word-spacing: .2em; }

/* HSE */
.rust .split > div:first-child p { max-width: 34em; }
.hse-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 32px; min-width: 0; }
.hse-list li { padding-block: 14px; border-top: 1px solid rgba(255, 255, 255, .35); line-height: 1.45; }

/* Contact */
.contact-list { display: grid; margin-top: 8px; }
.contact-list > div { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: 16px; padding-block: 12px; border-top: 1px solid var(--line-dark); }
.contact-list dt { font: 500 .8125rem/1.8 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--on-dark-muted); }
.contact-list a { text-decoration: none; }
.contact-list a:hover { color: var(--amber); }
.enquiry { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; min-width: 0; }
.field { display: grid; gap: 6px; min-width: 0; }
.wide { grid-column: 1 / -1; }
.field label { font-size: .9375rem; font-weight: 500; }
.field input, .field textarea {
  width: 100%; padding: 12px; background: var(--ink-2); color: #fff; border: 1px solid #5a6064; border-radius: 0;
  font: 400 1rem/1.4 var(--sans); color-scheme: dark;
}
.field textarea { resize: vertical; }
.field [aria-invalid="true"] { border-color: var(--amber); }
.form-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; }
.btn:disabled { opacity: .6; cursor: progress; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { flex: 1 1 240px; font-size: .875rem; line-height: 1.45; color: var(--on-dark-muted); }

/* Footer */
.site-footer { background: var(--rust); color: #fff; border-top: 4px solid var(--amber); font-size: .9375rem; }
.footer-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 32px; padding-block: 20px; }
.site-footer b { font-weight: 600; }

/* Mongolian: the condensed face has no full Cyrillic, and strings run longer */
html[lang="mn"] { --display: "IBM Plex Sans", Arial, sans-serif; }
html[lang="mn"] h1 { font-size: clamp(2.1rem, 5vw, 3.75rem); }
html[lang="mn"] h2 { font-size: clamp(1.75rem, 3.4vw, 2.625rem); }
html[lang="mn"] .site-nav { gap: 16px; }
html[lang="mn"] .site-nav a { font-size: .875rem; }

@media (max-width: 1180px) {
  .brand-name { display: none; }
}
@media (max-width: 1020px) {
  .menu-toggle { display: block; }
  .site-nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 8px max(24px, env(safe-area-inset-right, 0px)) 16px max(24px, env(safe-area-inset-left, 0px));
  }
  .site-nav.open { display: flex; }
  .site-nav a, html[lang="mn"] .site-nav a { padding-block: 12px; font-size: 1rem; border-top: 1px solid var(--line); }
  .split, .split.even, .record { grid-template-columns: minmax(0, 1fr); }
  .hero-pit { right: -40%; width: 130%; opacity: .6; }
  .hero::after { background: linear-gradient(90deg, var(--ink) 10%, rgba(29, 32, 35, .6) 100%); }
}
@media (max-width: 760px) {
  body { font-size: 1rem; }
  .wrap { padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
  .header-row { gap: 10px; }
  .header-actions .btn-small { display: none; }
  .hero-facts, .value-grid, .three, .hse-list, .enquiry { grid-template-columns: minmax(0, 1fr); }
  .hero-facts { gap: 18px; }
  .value-grid { gap: 24px; }
  .chain { grid-template-columns: minmax(0, 1fr); border-top: 0; border-left: 3px solid var(--rust); gap: 18px; margin-left: 6px; }
  .chain li { padding: 0 0 0 20px; display: flex; gap: 10px; align-items: baseline; }
  .chain li::before { margin: 0; }
  .chain li::after { top: 4px; left: -8px; }
  .brands { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .spec > div { grid-template-columns: minmax(0, 1fr); }
  .tabs { flex-direction: column; gap: 0; }
  .tabs button { border-bottom: 0; border-left: 3px solid transparent; padding: 10px 12px; }
  .tabs button[aria-selected="true"] { border-left-color: var(--rust); }
  .contact-list > div { grid-template-columns: 86px minmax(0, 1fr); gap: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}