/* ============================================================
   EXIT FILE — MASTER STYLESHEET
   exitfile.co.uk
   Version: 1.0
   Date: 2026-06-16
   ============================================================ */

/* ------------------------------------------------------------
   IMPORT
   ------------------------------------------------------------ */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,400;0,500;0,700;1,400&display=swap');


/* ------------------------------------------------------------
   TOKENS
   ------------------------------------------------------------ */

:root {
  --bg:         #F4F3F0;
  --fg:         #1A1A1A;
  --accent:     #5C6B73;
  --accent-dim: #8A9BA4;
  --rule:       #D0CEC9;
  --meta:       #8A8680;
  --bg-tag:     #E8E6E1;

  --font:       'JetBrains Mono', 'Courier New', monospace;

  --size-xs:    0.75rem;
  --size-sm:    0.85rem;
  --size-base:  1.13rem;
  --size-md:    1.05rem;
  --size-lg:    1.25rem;
  --size-xl:    2rem;

  --leading-tight:  1.35;
  --leading-base:   1.65;
  --leading-loose:  1.85;

  --max-w:      680px;
  --gutter:     1.5rem;
  --section-gap: 3rem;
}


/* ------------------------------------------------------------
   RESET
   ------------------------------------------------------------ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: var(--size-base);
  font-weight: 400;
  line-height: var(--leading-base);
  min-height: 100vh;
  padding: 2rem var(--gutter) 4rem;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--fg);
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 1px;
}

ul, ol {
  padding-left: 1.25rem;
}

li {
  margin-bottom: 0.35rem;
  line-height: var(--leading-base);
}

p + p {
  margin-top: 1rem;
}


/* ------------------------------------------------------------
   LAYOUT WRAPPER
   ------------------------------------------------------------ */

.ef-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
}


/* ------------------------------------------------------------
   DOCUMENT HEADER
   ------------------------------------------------------------ */

.ef-doc-header {
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--rule);
}

.ef-doc-header__site {
  font-size: var(--size-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--meta);
  text-decoration: none;
  display: inline-block;
  margin-bottom: 1.25rem;
}

.ef-doc-header__site:hover {
  color: var(--fg);
}

.ef-doc-meta {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.2rem 1.5rem;
  font-size: var(--size-xs);
  color: var(--meta);
  line-height: var(--leading-tight);
}

.ef-doc-meta__key {
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.ef-doc-meta__val {
  color: var(--fg);
}

.ef-doc-meta__val--status {
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.05em;
}


/* ------------------------------------------------------------
   NAVIGATION
   ------------------------------------------------------------ */

.ef-nav {
  margin-bottom: 2.5rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--rule);
}

.ef-nav__label {
  font-size: var(--size-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--meta);
  margin-bottom: 0.75rem;
}

.ef-nav__list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0;
}

.ef-nav__list li {
  margin: 0;
  display: flex;
  align-items: center;
}

.ef-nav__list li:not(:last-child)::after {
  content: '·';
  color: var(--rule);
  margin: 0 0.5rem;
}

.ef-nav__link {
  font-size: var(--size-xs);
  color: var(--meta);
  text-decoration: none;
  letter-spacing: 0.03em;
  padding: 0.1rem 0;
}

.ef-nav__link:hover {
  color: var(--fg);
}

.ef-nav__link--active {
  color: var(--fg);
  font-weight: 700;
}

.ef-nav__link--variant {
  color: var(--meta);
  font-style: italic;
}


/* ------------------------------------------------------------
   PAGE TITLE / SECTION HEAD
   ------------------------------------------------------------ */

.ef-page-title {
  margin-bottom: 2rem;
}

.ef-page-title__eyebrow {
  font-size: var(--size-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--meta);
  margin-bottom: 0.5rem;
}

.ef-page-title__heading {
  font-size: var(--size-xl);
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--fg);
  letter-spacing: -0.01em;
}

.ef-page-title__sub {
  margin-top: 0.75rem;
  font-size: var(--size-sm);
  color: var(--meta);
  line-height: var(--leading-base);
}


/* ------------------------------------------------------------
   SECTION DIVIDER / LABEL
   ------------------------------------------------------------ */

.ef-section {
  margin-top: var(--section-gap);
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
}

.ef-section__label {
  font-size: var(--size-lg);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--meta);
  margin-bottom: 1.25rem;
}

.ef-section__heading {
  font-size: var(--size-md);
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--fg);
  margin-bottom: 0.75rem;
}

.ef-section__body {
  font-size: var(--size-base);
  line-height: var(--leading-base);
  color: var(--fg);
}

.ef-section__body > * + * {
  margin-top: 0.85rem;
}


/* ------------------------------------------------------------
   CONTENT BLOCKS
   ------------------------------------------------------------ */

/* Inline tag / status badge */
.ef-tag {
  display: inline-block;
  font-size: var(--size-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--bg-tag);
  border: 1px solid var(--rule);
  padding: 0.15rem 0.5rem;
  border-radius: 1px;
  white-space: nowrap;
}

/* Checklist */
.ef-checklist {
  list-style: none;
  padding: 0;
}

.ef-checklist li {
  display: grid;
  grid-template-columns: 1.2rem 1fr;
  gap: 0 0.6rem;
  align-items: baseline;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--rule);
  font-size: var(--size-base);
  line-height: var(--leading-tight);
}

.ef-checklist li:first-child {
  border-top: 1px solid var(--rule);
}

.ef-checklist__box {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 1px solid var(--accent-dim);
  border-radius: 1px;
  flex-shrink: 0;
  position: relative;
  top: 0.1rem;
}

/* Definition / field list */
.ef-fields {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 0;
  font-size: var(--size-sm);
}

.ef-fields__key {
  font-weight: 700;
  color: var(--meta);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: var(--size-xs);
  padding: 0.5rem 0.75rem 0.5rem 0;
  border-bottom: 1px solid var(--rule);
  align-self: start;
}

.ef-fields__val {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--rule);
  color: var(--fg);
  line-height: var(--leading-base);
}

/* Rule — standalone horizontal rule */
.ef-rule {
  border: none;
  border-top: 1px solid var(--rule);
  margin: var(--section-gap) 0;
}

/* Lead paragraph */
.ef-lead {
  font-size: var(--size-md);
  line-height: var(--leading-loose);
  color: var(--fg);
  font-weight: 400;
}

/* Pull / callout */
.ef-callout {
  border-left: 3px solid var(--accent);
  padding: 0.85rem 1rem;
  margin: 1.5rem 0;
  background: var(--bg-tag);
}

.ef-callout__label {
  font-size: var(--size-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

.ef-callout__body {
  font-size: var(--size-sm);
  line-height: var(--leading-base);
  color: var(--fg);
}

/* Reference sentence */
.ef-reference {
  font-family: var(--font);
  font-size: var(--size-sm);
  font-style: italic;
  color: var(--meta);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 0.75rem 0;
  margin: 1.5rem 0;
}


/* ------------------------------------------------------------
   PRODUCT / CTA BLOCK
   ------------------------------------------------------------ */

.ef-product {
  border: 1px solid var(--rule);
  padding: 1.5rem;
  margin: 2rem 0;
}

.ef-product__eyebrow {
  font-size: var(--size-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--meta);
  margin-bottom: 0.6rem;
}

.ef-product__name {
  font-size: var(--size-lg);
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.4rem;
}

.ef-product__desc {
  font-size: var(--size-sm);
  color: var(--meta);
  margin-bottom: 1rem;
  line-height: var(--leading-base);
}

.ef-product__price {
  font-size: var(--size-md);
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 1rem;
}

.ef-product__action {
  display: inline-block;
  font-size: var(--size-sm);
  font-weight: 700;
  font-family: var(--font);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--fg);
  border: none;
  padding: 0.6rem 1.25rem;
  cursor: pointer;
  text-decoration: none;
  border-radius: 1px;
  transition: background 0.15s ease;
}

.ef-product__action:hover {
  background: var(--accent);
  color: var(--bg);
}


/* ------------------------------------------------------------
   FOOTER
   ------------------------------------------------------------ */

.ef-footer {
  margin-top: 4rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
}

.ef-footer__site {
  font-size: var(--size-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--meta);
  text-decoration: none;
}

.ef-footer__site:hover {
  color: var(--fg);
}

.ef-footer__links {
  display: flex;
  gap: 1rem;
  list-style: none;
  padding: 0;
}

.ef-footer__links li {
  margin: 0;
}

.ef-footer__links a {
  font-size: var(--size-xs);
  color: var(--meta);
  text-decoration: none;
  letter-spacing: 0.03em;
}

.ef-footer__links a:hover {
  color: var(--fg);
}


/* ------------------------------------------------------------
   UTILITY
   ------------------------------------------------------------ */

.ef-meta-text {
  font-size: var(--size-xs);
  color: var(--meta);
  line-height: var(--leading-base);
}

.ef-mono {
  font-family: var(--font);
}

.u-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}


/* ------------------------------------------------------------
   RESPONSIVE
   ------------------------------------------------------------ */

@media (max-width: 600px) {
  :root {
    --gutter: 1rem;
    --section-gap: 2.25rem;
    --size-base: 1rem;
    --size-xl: 1.35rem;
    --size-lg: 1.10rem;
  }

  body {
    padding: 1.25rem var(--gutter) 3rem;
  }

  .ef-fields {
    grid-template-columns: 1fr;
  }

  .ef-fields__key,
  .ef-fields__val {
    border-bottom: none;
    padding: 0.25rem 0;
  }

  .ef-fields__val {
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--rule);
  }

  .ef-nav__list {
    flex-direction: row;
    gap: 0.7em;
  }

  .ef-nav__list li::after {
    display: none;
  }

  .ef-nav__link {
    padding: 0.25rem 0;
    display: block;
  }

  .ef-footer {
    flex-direction: column;
    gap: 0.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}