/* Pro Source Guyana — site styles (light only) */

:root {
  color-scheme: light only;
  --navy: #0d2a24;
  --steel: #3c5a52;
  --ink: #141a22;
  --ink-2: #4b5565;
  --line: #d5dcd8;
  --line-2: #e7ece9;
  --paper: #ffffff;
  --paper-2: #f3f6f4;
  --accent: #b8860b;
  --accent-ink: #8a6508;
  --accent-soft: #f7efd6;
  --link: #0f5c4c;
  --focus: #0f5c4c;

  --font: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", "SF Mono", Menlo, Consolas, monospace;

  --max: 1140px;
  --gutter: 20px;
  --radius: 4px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--paper);
}

h1, h2, h3, h4 { margin: 0; line-height: 1.2; font-weight: 600; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 1.2rem + 3vw, 3.4rem); letter-spacing: -0.025em; line-height: 1.08; }
h2 { font-size: clamp(1.5rem, 1.15rem + 1.4vw, 2.1rem); }
h3 { font-size: 1.05rem; }
p { margin: 0 0 1rem; }
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 2px; }
ul, ol { margin: 0; padding: 0; list-style: none; }
sup { font-size: 0.6em; }
svg { fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--navy); color: #fff; padding: 8px 12px; z-index: 100; }
.skip:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.eyebrow {
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--accent-ink); margin-bottom: 0.6rem;
}
.lede { font-size: 1.15rem; color: var(--ink-2); max-width: 52ch; }
.fine { font-size: 0.82rem; color: var(--ink-2); }
.note { font-size: 0.85rem; color: var(--ink-2); margin: 20px 0 0; }
.mono { font-family: var(--mono); font-size: 0.85rem; }
.opt { font-weight: 400; color: var(--ink-2); font-size: 0.85em; }

.section__head { max-width: 60ch; margin-bottom: 36px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 46px; padding: 0 22px;
  font: 600 0.95rem/1 var(--font);
  border: 1px solid transparent; border-radius: var(--radius);
  text-decoration: none; cursor: pointer;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}
.btn--primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn--primary:hover { background: var(--accent-ink); border-color: var(--accent-ink); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--ink); }
.btn--sm { min-height: 38px; padding: 0 14px; font-size: 0.875rem; }
.btn--lg { min-height: 50px; padding: 0 28px; font-size: 1rem; }

/* Top bar */
.topbar { position: sticky; top: 0; z-index: 50; background: var(--paper); border-bottom: 1px solid var(--line); }
.topbar__in { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.brand__mark { flex: none; color: var(--navy); stroke: none; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name { font-weight: 700; font-size: 1.05rem; }
.brand__sub { font-size: 0.72rem; color: var(--ink-2); }

.nav__toggle {
  display: none; width: 44px; height: 44px; padding: 11px 10px;
  background: none; border: 1px solid var(--line); border-radius: var(--radius); cursor: pointer;
  flex-direction: column; justify-content: space-between;
}
.nav__bar { display: block; height: 2px; background: var(--ink); }
.nav__list { display: flex; align-items: center; gap: 2px; }
.nav__list a:not(.btn) {
  display: inline-block; padding: 10px 12px; color: var(--ink); text-decoration: none; font-size: 0.925rem; font-weight: 500;
  border-bottom: 2px solid transparent;
}
.nav__list a:not(.btn):hover { border-bottom-color: var(--accent); }
.nav__list li:last-child { margin-left: 10px; }

@media (max-width: 900px) {
  .nav__toggle { display: flex; }
  .nav__list {
    display: none; position: absolute; left: 0; right: 0; top: 64px;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line); padding: 8px var(--gutter) 16px;
  }
  .nav--open .nav__list { display: flex; }
  .nav__list a:not(.btn) { display: block; padding: 12px 4px; border-bottom: 1px solid var(--line-2); }
  .nav__list li:last-child { margin: 12px 0 0; }
}

/* Hero */
.hero { padding: 72px 0 56px; border-bottom: 1px solid var(--line); }
.hero__grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 56px; align-items: end; }
.hero__copy h1 { margin-bottom: 1rem; max-width: 16ch; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 1.5rem; }
.hero__stats { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.hero__stats li { padding: 18px 20px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); display: flex; flex-direction: column; gap: 4px; }
.hero__stats li:nth-child(2n) { border-right: 0; }
.hero__stats li:nth-last-child(-n+2) { border-bottom: 0; }
.stat__k { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-2); }
.stat__v { font-weight: 600; font-size: 1.2rem; }
@media (max-width: 900px) {
  .hero { padding: 44px 0 40px; }
  .hero__grid { grid-template-columns: 1fr; gap: 32px; }
}

/* Brand strip */
.brands { background: var(--paper-2); border-bottom: 1px solid var(--line); }
.brands__in { display: grid; grid-template-columns: repeat(3, 1fr); }
.brands__item { padding: 18px 0; display: flex; flex-direction: column; border-right: 1px solid var(--line); padding-right: 20px; }
.brands__item + .brands__item { padding-left: 24px; }
.brands__item:last-child { border-right: 0; }
.brands__name { font-weight: 700; font-size: 1.15rem; }
.brands__role { font-size: 0.8rem; color: var(--ink-2); }
@media (max-width: 700px) {
  .brands__in { grid-template-columns: 1fr; }
  .brands__item { border-right: 0; border-bottom: 1px solid var(--line); padding: 12px 0; }
  .brands__item + .brands__item { padding-left: 0; }
  .brands__item:last-child { border-bottom: 0; }
}

/* Sections */
.section { padding: 80px 0; border-bottom: 1px solid var(--line); }
.section--alt { background: var(--paper-2); }
.section--dark { background: var(--navy); color: #fff; }
.section--dark .eyebrow { color: #e3c36a; }
@media (max-width: 700px) { .section { padding: 52px 0; } }

/* Cards */
.cards { display: grid; gap: 16px; }
.cards--3 { grid-template-columns: repeat(3, 1fr); }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.card__icon { width: 28px; height: 28px; color: var(--accent); margin-bottom: 14px; }
.card h3 { margin-bottom: 6px; }
.card p { margin: 0; color: var(--ink-2); font-size: 0.95rem; }
@media (max-width: 900px) { .cards--3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .cards--3 { grid-template-columns: 1fr; } }

/* Products */
.products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.product { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 24px; display: flex; flex-direction: column; }
.product--featured { border-top: 4px solid var(--accent); }
.product__head { margin-bottom: 18px; }
.product__num { font-family: var(--mono); font-size: 0.8rem; color: var(--accent-ink); display: block; margin-bottom: 10px; }
.product__head h3 { font-size: 1.25rem; }
.product__sub { margin: 4px 0 0; font-size: 0.85rem; color: var(--ink-2); }
.product__spec { margin: 0 0 20px; flex: 1; }
.product__spec dt { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-2); padding-top: 12px; border-top: 1px solid var(--line-2); }
.product__spec dd { margin: 2px 0 10px; font-size: 0.925rem; }
.product__cta { font-weight: 600; font-size: 0.9rem; text-decoration: none; color: var(--accent-ink); }
.product__cta::after { content: " \2192"; }
.product__cta:hover { text-decoration: underline; }
@media (max-width: 900px) { .products { grid-template-columns: 1fr; } }

/* Chain */
.chain { display: grid; grid-template-columns: repeat(5, 1fr); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.chain li { padding: 22px 20px; border-right: 1px solid var(--line); position: relative; }
.chain li:last-child { border-right: 0; }
.chain__last { background: var(--navy); color: #fff; }
.chain__n {
  display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent-ink); font: 600 0.8rem/1 var(--mono); margin-bottom: 14px;
}
.chain__last .chain__n { background: rgba(255,255,255,0.14); color: #fff; }
.chain h3 { font-size: 1rem; margin-bottom: 4px; }
.chain p { margin: 0; font-size: 0.875rem; color: var(--ink-2); }
.chain__last p { color: #cfdcd6; }
@media (max-width: 1000px) { .chain { grid-template-columns: repeat(3, 1fr); } .chain li { border-bottom: 1px solid var(--line); } }
@media (max-width: 600px) { .chain { grid-template-columns: 1fr; } .chain li { border-right: 0; } }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.steps li { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.steps__n { font-family: var(--mono); color: var(--accent-ink); font-size: 0.85rem; display: block; margin-bottom: 10px; }
.steps h3 { font-size: 1rem; margin-bottom: 4px; }
.steps p { margin: 0; font-size: 0.875rem; color: var(--ink-2); }
@media (max-width: 1000px) { .steps { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 600px) { .steps { grid-template-columns: 1fr; } }

/* Industries */
.tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.tiles li { padding: 18px 20px; border: 1px solid rgba(255,255,255,0.18); border-radius: var(--radius); font-weight: 500; }
@media (max-width: 700px) { .tiles { grid-template-columns: 1fr 1fr; } }
@media (max-width: 420px) { .tiles { grid-template-columns: 1fr; } }

/* About */
.about { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: 56px; align-items: start; }
.about__text h2 { margin-bottom: 1rem; }
.about__text p { color: var(--ink-2); max-width: 50ch; }
.tagline { font-weight: 600; color: var(--ink) !important; }
.about__list li { display: flex; gap: 12px; align-items: flex-start; padding: 12px 0; border-top: 1px solid var(--line); font-size: 0.95rem; }
.about__list li:last-child { border-bottom: 1px solid var(--line); }
.tick { width: 20px; height: 20px; flex: none; color: var(--accent); stroke-width: 2.4; margin-top: 2px; }
@media (max-width: 800px) { .about { grid-template-columns: 1fr; gap: 28px; } }

/* RFQ */
.rfq { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 48px; }
.rfq__intro p { color: var(--ink-2); }
.contact { font-style: normal; margin-top: 24px; border-top: 1px solid var(--line); padding-top: 20px; }
.contact p { color: var(--ink); }
@media (max-width: 900px) { .rfq { grid-template-columns: 1fr; gap: 32px; } }

.form { background: var(--paper); border: 1px solid var(--line); padding: 28px; border-radius: var(--radius); }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; min-height: 44px; padding: 10px 12px;
  font: 400 1rem/1.4 var(--font); color: var(--ink);
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  transition: border-color 150ms ease;
}
.field textarea { font-family: var(--mono); font-size: 0.9rem; resize: vertical; }
.field input:hover, .field select:hover, .field textarea:hover { border-color: var(--steel); }
.field input:focus, .field select:focus, .field textarea:focus { outline: 3px solid var(--focus); outline-offset: 0; border-color: var(--focus); }
.field input[type="file"] { padding: 8px; }
.hint { margin: 6px 0 0; font-size: 0.82rem; color: var(--ink-2); }
@media (max-width: 600px) { .form { padding: 20px; } .form__row { grid-template-columns: 1fr; gap: 0; } }

/* Footer */
.footer { background: var(--navy); color: #cfdcd6; padding: 40px 0; font-size: 0.9rem; }
.footer__in { display: grid; grid-template-columns: 1fr auto; gap: 24px 48px; align-items: start; }
.footer__name { color: #fff; font-weight: 600; margin-bottom: 4px; }
.footer p { margin: 0 0 4px; }
.footer__links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer__links a { color: #fff; text-decoration: none; }
.footer__links a:hover { text-decoration: underline; }
.footer__legal { grid-column: 1 / -1; border-top: 1px solid rgba(255,255,255,0.15); padding-top: 16px; font-size: 0.8rem; color: #9db0a8; margin-top: 8px; }
@media (max-width: 700px) { .footer__in { grid-template-columns: 1fr; } }

/* ---- Pro Source additions ---- */
.sub { color: var(--ink-2); max-width: 60ch; margin-top: 0.75rem; }

/* Proof strip */
.proof { background: var(--paper-2); border-bottom: 1px solid var(--line); }
.proof__in { display: grid; grid-template-columns: repeat(3, 1fr); }
.proof__item { display: flex; gap: 14px; align-items: flex-start; padding: 20px 24px 20px 0; border-right: 1px solid var(--line); }
.proof__item + .proof__item { padding-left: 24px; }
.proof__item:last-child { border-right: 0; }
.proof__icon { width: 26px; height: 26px; flex: none; color: var(--accent); margin-top: 2px; }
.proof__item strong { display: block; font-size: 0.95rem; }
.proof__item span { font-size: 0.82rem; color: var(--ink-2); }
@media (max-width: 800px) {
  .proof__in { grid-template-columns: 1fr; }
  .proof__item { border-right: 0; border-bottom: 1px solid var(--line); padding: 14px 0; }
  .proof__item + .proof__item { padding-left: 0; }
  .proof__item:last-child { border-bottom: 0; }
}

/* Local content */
.lc { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: 56px; align-items: start; }
.lc__text h2 { margin-bottom: 1rem; }
.lc__text p { color: #cfdcd6; max-width: 54ch; }
.lc__list li { display: flex; gap: 14px; align-items: flex-start; padding: 14px 0; border-top: 1px solid rgba(255,255,255,0.18); }
.lc__list li:last-child { border-bottom: 1px solid rgba(255,255,255,0.18); }
.lc__list strong { display: block; font-size: 0.95rem; }
.lc__list span { font-size: 0.85rem; color: #cfdcd6; }
.lc .tick { color: #e3c36a; }
@media (max-width: 800px) { .lc { grid-template-columns: 1fr; gap: 28px; } }

/* Supply flow */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; counter-reset: flow; }
.flow li { padding: 24px 22px; border-right: 1px solid var(--line); position: relative; background: var(--paper); }
.flow li:last-child { border-right: 0; }
.flow li:not(:last-child)::after {
  content: ""; position: absolute; right: -8px; top: 50%; width: 14px; height: 14px; margin-top: -7px;
  background: var(--paper); border-top: 1px solid var(--line); border-right: 1px solid var(--line); transform: rotate(45deg); z-index: 1;
}
.flow__us { background: var(--accent-soft) !important; }
.flow__us::after { background: var(--accent-soft) !important; }
.flow__k { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-ink); display: block; margin-bottom: 10px; }
.flow h3 { font-size: 1rem; margin-bottom: 6px; }
.flow p { margin: 0; font-size: 0.875rem; color: var(--ink-2); }
@media (max-width: 1000px) {
  .flow { grid-template-columns: 1fr 1fr; }
  .flow li { border-bottom: 1px solid var(--line); }
  .flow li:nth-child(2n) { border-right: 0; }
  .flow li::after { display: none; }
}
@media (max-width: 600px) { .flow { grid-template-columns: 1fr; } .flow li { border-right: 0; } }

/* Light tiles */
.tiles--light li { border-color: var(--line); background: var(--paper); color: var(--ink); }


/* Schematic hero */
.btn--gold { background: #e3c36a; color: var(--navy); border-color: #e3c36a; }
.btn--gold:hover { background: #f0d88f; border-color: #f0d88f; }
.btn--line-w { color: #fff; border-color: rgba(255,255,255,.4); background: transparent; }
.btn--line-w:hover { border-color: #fff; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.dark { background-color: var(--navy); color: #fff; --sl: #e3c36a; --sb: #fff; --st: #fff; --sk: #e3c36a; --sf: rgba(255,255,255,.05);
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 56px 56px; }
.dark .eyebrow { color: #e3c36a; }
.dark .lead { color: #cfdcd6; }
.lead { font-size: 1.1rem; max-width: 46ch; margin: 0; }
.hh { font-size: clamp(2.1rem, 1.3rem + 3vw, 3.5rem); margin-bottom: 18px; }
.sch { width: 100%; height: auto; display: block; }
.ln { stroke: var(--sl); stroke-width: 2; fill: none; }
.bx { stroke: var(--sb); stroke-width: 2; fill: var(--sf); }
.sch text { font-family: var(--mono); font-size: 13px; fill: var(--st); stroke: none; }
.sch text.k { fill: var(--sk); }
.sch text.c { text-anchor: middle; }
.a1__top { display: flex; justify-content: space-between; gap: 40px; align-items: flex-end; flex-wrap: wrap; padding-top: 64px; padding-bottom: 28px; }
.a1__top .actions { margin: 0; }
.a1__top h1 { margin-bottom: 14px; max-width: 16ch; }
.a1__draw { padding-bottom: 48px; }
.a1__scroll { overflow-x: auto; }
@media (max-width: 760px) {
  .a1__top { padding-top: 44px; }
  .a1__scroll svg { width: 900px; max-width: none; }
}