/* ============================================================
   VP Racing Fuels Ontario — visual identity
   Concept: dye chips + spec-paper. Steel bands / paper bands.
   Dye colors encode data only; hazard yellow is the brand accent.
   ============================================================ */

:root {
  --steel:      #151C22;
  --steel-2:    #1F272E;
  --paper:      #E9ECE9;
  --paper-2:    #F4F6F3;
  --ink:        #0B0F12;
  --ink-2:      #4A5560;
  --ink-3:      #7A848F;
  --line:       #C6CBC7;
  --line-steel: #2A343C;
  --accent:     #F0C325;
  --accent-hot: #FFD84A;

  /* Dye colors — data encoding only, never decorative. */
  --dye-green:  #4B9F6B;
  --dye-blue:   #2E6FB5;
  --dye-violet: #7A4AA8;
  --dye-amber:  #C97A22;
  --dye-red:    #B0384A;

  --font-display: 'Saira Condensed', 'Impact', 'Helvetica Neue', sans-serif;
  --font-body:    'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono:    'IBM Plex Mono', 'SF Mono', 'Menlo', 'Consolas', monospace;

  --max: 1240px;
  --gutter: clamp(20px, 3vw, 40px);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

/* ---------- Header ---------- */

.header {
  position: sticky; top: 0; z-index: 40;
  background: var(--steel);
  color: var(--paper);
  border-bottom: 1px solid var(--line-steel);
}
.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 20px var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand {
  display: inline-flex; align-items: center;
  color: var(--paper);
}
.brand .wordmark {
  height: 128px; width: auto; max-width: 640px;
}
.nav {
  display: flex; align-items: center; gap: 28px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.nav a {
  color: var(--paper);
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: border-color .15s ease, color .15s ease;
}
.nav a:hover, .nav a[aria-current="page"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.nav .cta {
  padding: 10px 18px;
  background: var(--accent);
  color: var(--steel);
  border: none;
  letter-spacing: 0.1em;
}
.nav .cta:hover { background: var(--accent-hot); color: var(--steel); border-color: transparent; }

@media (max-width: 900px) {
  .header-inner { padding: 14px var(--gutter); flex-wrap: wrap; }
  .brand .wordmark { height: 76px; max-width: 380px; }
  .nav { width: 100%; justify-content: flex-start; gap: 16px; font-size: 13px; flex-wrap: wrap; }
  .nav .cta { padding: 8px 14px; }
}

/* ---------- Bands / sections ---------- */

.band { padding: clamp(64px, 9vw, 128px) 0; }
.band-steel { background: var(--steel); color: var(--paper); }
.band-paper { background: var(--paper); color: var(--ink); }
.band-paper-2 { background: var(--paper-2); color: var(--ink); }
.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.container-narrow {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------- Type ---------- */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  text-transform: uppercase;
  line-height: 0.95;
  letter-spacing: -0.005em;
  margin: 0 0 0.4em;
  color: inherit;
}
h1 { font-size: clamp(2.75rem, 7.2vw, 6.5rem); letter-spacing: -0.015em; }
h2 { font-size: clamp(1.85rem, 4vw, 3.25rem); }
h3 { font-size: clamp(1.15rem, 1.6vw, 1.5rem); font-weight: 700; letter-spacing: 0.01em; }
h4 { font-size: 1rem; font-weight: 700; letter-spacing: 0.04em; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 28px; height: 1px;
  background: currentColor;
}
.band-paper .eyebrow, .band-paper-2 .eyebrow { color: var(--ink-2); }

.lede {
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  line-height: 1.5;
  color: inherit;
  opacity: 0.85;
  max-width: 60ch;
}

.mono { font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.02em; }
.small { font-size: 0.875rem; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 24px;
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 14px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.btn-primary {
  background: var(--accent);
  color: var(--steel);
}
.btn-primary:hover { background: var(--accent-hot); }
.btn-ghost {
  background: transparent;
  color: inherit;
  border-color: currentColor;
}
.band-steel .btn-ghost:hover { background: rgba(240,195,37,0.1); border-color: var(--accent); color: var(--accent); }
.band-paper .btn-ghost:hover, .band-paper-2 .btn-ghost:hover { background: var(--steel); color: var(--paper); border-color: var(--steel); }
.btn-arrow::after {
  content: "→";
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  transition: transform .15s ease;
}
.btn-arrow:hover::after { transform: translateX(4px); }

/* ---------- Hero ---------- */

.hero {
  padding-top: clamp(72px, 10vw, 128px);
  padding-bottom: 0;
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: end;
}
.hero h1 { margin-bottom: 32px; max-width: 16ch; }
.hero .lede { margin-bottom: 40px; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: clamp(56px, 8vw, 96px); }

/* Dye key — the thesis element */
.dye-key {
  border-top: 1px solid var(--line-steel);
  padding: 32px 0 48px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 24px;
}
.dye-item {
  display: flex; flex-direction: column; gap: 10px;
}
.dye-swatch {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 2px solid transparent;
}
.dye-swatch.dye-clear {
  background: transparent;
  border-color: var(--paper);
  opacity: 0.65;
}
.dye-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.dye-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  text-transform: uppercase;
}

/* ---------- Feature strip ---------- */

.strip {
  border-top: 1px solid var(--line-steel);
  border-bottom: 1px solid var(--line-steel);
  padding: 28px 0;
}
.band-paper .strip, .band-paper-2 .strip { border-color: var(--line); }
.strip-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  align-items: baseline;
}
.strip-cell { display: flex; flex-direction: column; gap: 6px; }
.strip-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.band-paper .strip-label, .band-paper-2 .strip-label { color: var(--ink-2); }
.strip-value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 2vw, 1.75rem);
  text-transform: uppercase;
  letter-spacing: 0.01em;
  line-height: 1;
}
@media (max-width: 720px) {
  .strip-inner { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}

/* ---------- 2-column intro ---------- */

.two-col {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(32px, 6vw, 96px);
  align-items: start;
}
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }

/* ---------- Cards / list ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2px;
  background: var(--line);
  border: 1px solid var(--line);
}
.band-steel .card-grid { background: var(--line-steel); border-color: var(--line-steel); }
.card {
  background: var(--paper);
  padding: 32px;
  display: flex; flex-direction: column; gap: 14px;
}
.band-steel .card { background: var(--steel); }
.band-paper-2 .card { background: var(--paper-2); }
.card-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.band-steel .card-tag { color: var(--accent); }
.card h3 { margin-bottom: 4px; }
.card p { color: var(--ink-2); font-size: 0.95rem; }
.band-steel .card p { color: rgba(233,236,233,0.75); }

/* ---------- Spec table (products page) ---------- */

.spec-wrap {
  overflow-x: auto;
  border: 1px solid var(--line-steel);
  background: var(--steel);
  color: var(--paper);
  margin-top: 40px;
}
.spec {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 900px;
}
.spec th, .spec td {
  text-align: left;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line-steel);
  vertical-align: top;
}
.spec thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  border-bottom: 2px solid var(--line-steel);
  background: #10161B;
  position: sticky; top: 0;
}
.spec tbody tr:hover td { background: rgba(240,195,37,0.03); }
.spec .product-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.spec .num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
  white-space: nowrap;
}
.spec .yn {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.spec .yn.no { color: var(--ink-3); }
.spec .swatch-row { display: inline-flex; align-items: center; gap: 8px; }
.spec .swatch-row .dye-swatch { width: 14px; height: 14px; border-width: 1.5px; }
.spec .swatch-row.dye-clear-row .dye-swatch { border-color: var(--paper); }

/* ---------- Ordered process (real sequence — the ONLY numbered list) ---------- */

.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: 48px;
}
.band-steel .process { background: var(--line-steel); border-color: var(--line-steel); }
.process-step {
  background: var(--paper);
  padding: 32px 28px;
  display: flex; flex-direction: column; gap: 14px;
  position: relative;
}
.band-steel .process-step { background: var(--steel); }
.step-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--accent);
  text-transform: uppercase;
}
.process-step h3 { font-size: 1.15rem; }
.process-step p { font-size: 0.9rem; color: var(--ink-2); margin: 0; }
.band-steel .process-step p { color: rgba(233,236,233,0.72); }
@media (max-width: 900px) { .process { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .process { grid-template-columns: 1fr; } }

/* ---------- Coverage / map row (about) ---------- */

.coverage {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
  margin-top: 48px;
}
.coverage-cell h4 { color: var(--accent); font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; margin-bottom: 12px; }
.coverage-cell ul { list-style: none; padding: 0; margin: 0; font-family: var(--font-mono); font-size: 13px; }
.coverage-cell li { padding: 6px 0; border-bottom: 1px dashed var(--line-steel); color: var(--paper); }
.band-paper .coverage-cell li, .band-paper-2 .coverage-cell li { border-bottom-color: var(--line); color: var(--ink); }
@media (max-width: 720px) { .coverage { grid-template-columns: 1fr; } }

/* ---------- Contact form ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-form { display: grid; gap: 20px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.field input, .field select, .field textarea {
  font-family: var(--font-body);
  font-size: 15px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  background: var(--paper-2);
  color: var(--ink);
  border-radius: 0;
  transition: border-color .15s ease, background .15s ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--steel);
  background: #fff;
}
.field textarea { min-height: 140px; resize: vertical; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 560px) { .row2 { grid-template-columns: 1fr; } }

.contact-details {
  background: var(--steel);
  color: var(--paper);
  padding: 32px;
  display: flex; flex-direction: column; gap: 20px;
}
.detail { display: flex; flex-direction: column; gap: 4px; }
.detail .k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.detail .v { font-size: 15px; line-height: 1.4; }
.detail .v a:hover { color: var(--accent); }
.detail .v.mono { font-family: var(--font-mono); font-size: 14px; }

.map-wrap {
  height: 420px;
  border: 1px solid var(--line-steel);
  background: var(--steel);
  overflow: hidden;
}

/* ---------- Footer ---------- */

.footer {
  background: var(--steel);
  color: var(--paper);
  padding: 64px 0 32px;
  border-top: 1px solid var(--line-steel);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.footer-brand { display: flex; flex-direction: column; gap: 20px; }
.footer-brand .wordmark { height: 132px; width: auto; max-width: 480px; color: var(--paper); }
.footer-brand .fine {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  line-height: 1.6;
  max-width: 40ch;
}
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin: 6px 0 16px;
  text-transform: uppercase;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { padding: 5px 0; font-size: 14px; }
.footer-col a { color: var(--paper); opacity: 0.85; }
.footer-col a:hover { color: var(--accent); opacity: 1; }
.footer-col .mono { font-family: var(--font-mono); font-size: 13px; }

.footer-bottom {
  margin-top: 48px; padding-top: 24px;
  border-top: 1px solid var(--line-steel);
  display: flex; justify-content: space-between; align-items: center; gap: 24px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-brand .wordmark { height: 96px; max-width: 380px; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ---------- Scroll reveal (mild) ---------- */

.reveal { opacity: 0; transform: translateY(16px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Focus ---------- */

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}