/* ==========================================================================
   Verified Petro Exchange Inc.
   Static single page. No framework, no build step.
   ========================================================================== */

/* ---- Font -------------------------------------------------------------- */

@font-face {
  font-family: 'Archivo';
  font-style: normal;
  font-weight: 100 900;
  font-stretch: 62% 125%;
  font-display: swap;
  src: url('/assets/fonts/archivo-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Archivo';
  font-style: normal;
  font-weight: 100 900;
  font-stretch: 62% 125%;
  font-display: swap;
  src: url('/assets/fonts/archivo-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF,
    U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020,
    U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* ---- Tokens ------------------------------------------------------------ */

:root {
  /* Brand, sampled from the original logo and page */
  --red: #D72020;
  --red-dark: #A81818;
  --ink: #16181C;
  --gray: #62696F;
  --gray-light: #A8AFB5;
  --paper: #FFFFFF;
  --paper-2: #F5F6F7;
  --line: #E2E5E7;
  --line-input: #818890; /* 3.58 on white, meets WCAG 1.4.11 for control borders */
  --line-dark: #363B41;

  /* Fluid type, 360px to 1440px */
  --step--1: clamp(0.83rem, 0.80rem + 0.14vw, 0.92rem);
  --step-0:  clamp(1.00rem, 0.95rem + 0.23vw, 1.13rem);
  --step-1:  clamp(1.20rem, 1.11rem + 0.39vw, 1.44rem);
  --step-2:  clamp(1.44rem, 1.30rem + 0.63vw, 1.83rem);
  --step-3:  clamp(1.73rem, 1.51rem + 0.98vw, 2.33rem);
  --step-4:  clamp(2.07rem, 1.74rem + 1.47vw, 2.96rem);
  --step-5:  clamp(2.49rem, 1.87rem + 2.75vw, 4.20rem);

  /* Fluid space */
  --space-2xs: clamp(0.38rem, 0.36rem + 0.09vw, 0.44rem);
  --space-xs:  clamp(0.75rem, 0.71rem + 0.19vw, 0.88rem);
  --space-s:   clamp(1.00rem, 0.95rem + 0.23vw, 1.13rem);
  --space-m:   clamp(1.50rem, 1.43rem + 0.35vw, 1.69rem);
  --space-l:   clamp(2.00rem, 1.91rem + 0.47vw, 2.25rem);
  --space-xl:  clamp(3.00rem, 2.86rem + 0.70vw, 3.38rem);
  --space-2xl: clamp(4.00rem, 3.53rem + 2.09vw, 5.25rem);
  --space-3xl: clamp(5.00rem, 4.06rem + 4.19vw, 7.50rem);

  --shell: 1240px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---- Reset ------------------------------------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Archivo', 'Helvetica Neue', Helvetica, sans-serif;
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
h1, h2, h3, p, ul, ol { margin: 0; }
ul, ol { list-style: none; padding: 0; }
a { color: inherit; }

:focus-visible { outline: 3px solid var(--red); outline-offset: 3px; }
/* The contact band is brand red, so the red focus ring would vanish on it. */
.contact :focus-visible { outline-color: var(--paper); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---- Primitives -------------------------------------------------------- */

.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--space-m);
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-s);
  z-index: 100;
  padding: var(--space-xs) var(--space-s);
  background: var(--ink);
  color: var(--paper);
  font-weight: 700;
  text-decoration: none;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: var(--space-xs); }

.eyebrow {
  font-size: var(--step--1);
  font-weight: 700;
  font-stretch: 105%;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
}
.eyebrow--red { color: var(--red); }

.section-title {
  margin-top: var(--space-s);
  font-size: var(--step-4);
  font-weight: 800;
  font-stretch: 112%;
  line-height: 1.05;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.section-title--light { color: var(--paper); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95em 1.7em;
  font-size: var(--step--1);
  font-weight: 700;
  font-stretch: 105%;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  border: 2px solid transparent;
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease),
              border-color 0.25s var(--ease), transform 0.15s var(--ease);
}
.btn:active { transform: translateY(1px); }

.btn--red { background: var(--red); color: var(--paper); }
.btn--red:hover { background: var(--red-dark); }

.btn--outline { border-color: var(--ink); color: var(--ink); }
.btn--outline:hover { background: var(--ink); color: var(--paper); }

.btn--plain {
  padding-inline: 0;
  color: var(--ink);
  border-bottom: 2px solid var(--ink);
}
.btn--plain:hover { color: var(--red); border-bottom-color: var(--red); }

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
  min-height: 4.75rem;
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; flex-shrink: 0; }
.brand img { width: auto; height: clamp(2.5rem, 1.9rem + 2.6vw, 3.5rem); }

.site-nav { display: flex; align-items: center; gap: var(--space-l); }
.site-nav__list { display: flex; align-items: center; gap: var(--space-m); }
.site-nav__list a {
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  padding-block: 0.35rem;
  border-bottom: 2px solid transparent;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}
.site-nav__list a:hover { color: var(--red); border-bottom-color: var(--red); }

/* CSS-only mobile menu. Works with JavaScript disabled.
   The checkbox is clipped rather than display:none so it keeps a tab stop and
   can be toggled with Space. Its accessible name comes from the paired label. */
.nav-toggle {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.nav-toggle__button { display: none; }

/* Above the breakpoint the full nav is always visible, so the toggle must not
   leave a phantom tab stop. display:none removes it from the tab order. */
@media (min-width: 64em) {
  .nav-toggle { display: none; }
}

@media (max-width: 63.99em) {
  .nav-toggle__button {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    cursor: pointer;
    font-size: var(--step--1);
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.5rem 0;
  }
  .nav-toggle__bars,
  .nav-toggle__bars::before,
  .nav-toggle__bars::after {
    display: block;
    width: 1.35rem;
    height: 2px;
    background: var(--ink);
  }
  .nav-toggle__bars { position: relative; }
  .nav-toggle__bars::before,
  .nav-toggle__bars::after { content: ''; position: absolute; left: 0; }
  .nav-toggle__bars::before { top: -6px; }
  .nav-toggle__bars::after { top: 6px; }

  .nav-toggle:focus-visible + .nav-toggle__button {
    outline: 3px solid var(--red);
    outline-offset: 3px;
  }

  .site-nav {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-s);
    padding-bottom: var(--space-m);
  }
  .nav-toggle:checked ~ .site-nav { display: flex; }

  .site-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav__list li { border-top: 1px solid var(--line); }
  .site-nav__list a { display: block; padding: var(--space-xs) 0; border-bottom: 0; }
  .site-nav__cta { align-self: flex-start; }
}

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

.hero {
  position: relative;
  overflow: hidden;
  padding-block: var(--space-3xl);
  border-bottom: 2px solid var(--red);
}

.hero__globe {
  position: absolute;
  top: 50%;
  right: -4%;
  width: min(46vw, 520px);
  height: auto;
  translate: 0 -50%;
  pointer-events: none;
  user-select: none;
}
@media (max-width: 63.99em) {
  .hero__globe { width: 58vw; right: -20%; opacity: 0.32; }
}

.hero__inner { position: relative; }

.hero__title {
  margin-top: var(--space-s);
  max-width: 14ch;
  font-size: var(--step-5);
  font-weight: 900;
  font-stretch: 118%;
  line-height: 0.96;
  letter-spacing: -0.035em;
}

.hero__lead {
  margin-top: var(--space-m);
  max-width: 44ch;
  font-size: var(--step-1);
  line-height: 1.5;
  color: var(--gray);
}
.hero__lead em {
  font-style: normal;
  color: var(--ink);
  font-weight: 700;
  box-shadow: inset 0 -0.12em 0 var(--red);
}

.hero__actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-m) var(--space-xl);
  margin-top: var(--space-xl);
}

/* ---- The exchange ------------------------------------------------------ */

.exchange { padding-block: var(--space-3xl); }

.exchange__inner { display: grid; gap: var(--space-xl); align-items: start; }
@media (min-width: 64em) {
  .exchange__inner { grid-template-columns: 0.95fr 1.25fr; gap: var(--space-2xl); }
}

.exchange__note {
  margin-top: var(--space-m);
  max-width: 32ch;
  font-size: var(--step-1);
  line-height: 1.45;
  color: var(--gray);
  padding-top: var(--space-m);
  border-top: 2px solid var(--red);
}

.speclist__item {
  display: grid;
  grid-template-columns: 3.75rem 1fr;
  gap: var(--space-s);
  padding-block: var(--space-m);
  border-bottom: 1px solid var(--line);
}
.speclist__item:first-child { border-top: 1px solid var(--line); }

.speclist__num {
  font-size: var(--step--1);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.14em;
  color: var(--red);
  padding-top: 0.5em;
}

.speclist__title {
  font-size: var(--step-2);
  font-weight: 800;
  font-stretch: 108%;
  line-height: 1.15;
  letter-spacing: -0.015em;
}
.speclist__text { margin-top: var(--space-2xs); color: var(--gray); max-width: 44ch; }

/* ---- How it works ------------------------------------------------------ */

.process { padding-block: var(--space-3xl); background: var(--ink); color: var(--paper); }

.process__inner { display: grid; gap: var(--space-xl); align-items: start; }
@media (min-width: 64em) {
  .process__inner { grid-template-columns: 0.72fr 2.28fr; gap: var(--space-2xl); }
  .process__title { margin-top: 0; }
}

.steps { display: grid; gap: 0; }
@media (min-width: 48em) { .steps { grid-template-columns: repeat(3, 1fr); } }

.steps__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-s);
  align-items: start;
  padding-block: var(--space-m);
  border-top: 1px solid var(--line-dark);
}
@media (min-width: 48em) {
  .steps__item {
    display: block;
    border-top: 2px solid var(--line-dark);
    padding: var(--space-m) var(--space-l) 0 0;
  }
  .steps__item + .steps__item { padding-left: var(--space-l); }
}

.steps__num {
  display: block;
  font-size: var(--step-3);
  font-weight: 900;
  font-stretch: 118%;
  font-variant-numeric: tabular-nums;
  color: var(--red);
  line-height: 0.9;
}

.steps__title {
  margin-top: var(--space-s);
  font-size: var(--step-1);
  font-weight: 800;
  font-stretch: 108%;
  line-height: 1.15;
}
.steps__text { margin-top: var(--space-2xs); color: var(--gray-light); max-width: 30ch; }

/* ---- Products ---------------------------------------------------------- */

.products { padding-block: var(--space-3xl); background: var(--paper-2); }

.products__inner { display: grid; gap: var(--space-xl); align-items: start; }
@media (min-width: 64em) {
  .products__inner { grid-template-columns: 1.1fr 1fr; gap: var(--space-2xl); }
}

.products__body { max-width: 48ch; }
.products__body p { color: var(--gray); font-size: var(--step-1); line-height: 1.55; }
.products__body p + p { margin-top: var(--space-l); }

/* Product tiles. Not currently rendered. See README.md before using. */
.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: var(--space-xs);
}
.tiles__item {
  padding: var(--space-s) var(--space-xs);
  border: 1px solid var(--ink);
  background: var(--paper);
  text-align: center;
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ---- Enquiry form ------------------------------------------------------ */

.enquiry { padding-block: var(--space-3xl); }

.enquiry__inner { display: grid; gap: var(--space-xl); align-items: start; }
@media (min-width: 64em) {
  .enquiry__inner { grid-template-columns: 0.9fr 1.1fr; gap: var(--space-2xl); }
}

.enquiry__note {
  margin-top: var(--space-m);
  max-width: 36ch;
  color: var(--gray);
  font-size: var(--step-1);
  line-height: 1.5;
}

.form__row { display: grid; gap: var(--space-m); }
@media (min-width: 40em) { .form__row { grid-template-columns: 1fr 1fr; } }

.field { display: flex; flex-direction: column; gap: var(--space-2xs); }
.form__row + .form__row,
.form__row + .field { margin-top: var(--space-m); }

.field label {
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.field label span { color: var(--red); }

.field input,
.field textarea {
  width: 100%;
  padding: 0.85em 0.9em;
  font: inherit;
  font-size: var(--step-0);
  color: var(--ink);
  background: var(--paper);
  border: 2px solid var(--line-input);
  border-radius: 0;
  transition: border-color 0.2s var(--ease);
  /* iOS zooms the page when a focused input is under 16px. */
  min-height: 3rem;
}
.field textarea { min-height: 8rem; resize: vertical; }

.field input:hover,
.field textarea:hover { border-color: var(--gray); }
.field input:focus,
.field textarea:focus { border-color: var(--ink); outline-offset: 1px; }

.field input:user-invalid,
.field textarea:user-invalid { border-color: var(--red); }

.field__help { font-size: var(--step--1); color: var(--gray); }

/* Honeypot. Off-canvas rather than display:none so naive bots still see it. */
.form__trap {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form__submit { margin-top: var(--space-l); }
.form__submit[disabled] { opacity: 0.55; cursor: not-allowed; }

.form__fineprint {
  margin-top: var(--space-s);
  font-size: var(--step--1);
  color: var(--gray);
}

.form__status {
  font-size: var(--step-0);
  font-weight: 700;
  line-height: 1.4;
}
.form__status:empty { display: none; }
.form__status--ok,
.form__status--error,
.form__status--pending {
  margin-bottom: var(--space-m);
  padding: var(--space-s) var(--space-m);
  border-left: 4px solid currentColor;
}
.form__status--ok { color: #1B6B2F; background: #EAF5EC; }
.form__status--error { color: #A81818; background: #FBEDED; }
.form__status--pending { color: var(--gray); background: var(--paper-2); }

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

.contact { padding-block: var(--space-2xl); background: var(--red); color: var(--paper); }

.contact__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-m) var(--space-2xl);
}

.contact__label {
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper);
}

.contact__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-m) var(--space-xl);
}
@media (min-width: 64em) {
  .contact__list li + li {
    padding-left: var(--space-xl);
    border-left: 1px solid rgba(255, 255, 255, 0.8);
  }
}

.contact__value {
  display: inline-block;
  /* Sized off viewport, not the type scale, so the long email address never
     breaks mid-word on a narrow phone. */
  font-size: clamp(1.35rem, 0.85rem + 2.6vw, 2.33rem);
  font-weight: 800;
  font-stretch: 108%;
  line-height: 1.1;
  letter-spacing: -0.015em;
  text-decoration: none;
  overflow-wrap: anywhere;
  border-bottom: 2px solid rgba(255, 255, 255, 0.75);
  transition: border-color 0.25s var(--ease);
}
.contact__value:hover { border-bottom-color: var(--paper); }

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

.site-footer { padding-block: var(--space-xl); }

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m) var(--space-l);
}

.site-footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-m);
}
.site-footer__logo { width: auto; height: 3.25rem; }

.site-footer__legal {
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  line-height: 1.5;
}
.site-footer__legal span { color: var(--gray); }

.site-footer__copy {
  font-size: var(--step--1);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
}