/* If Then Dev — site chrome
   Single source of truth for the studio palette, type, layout, and components.
   Imported by every page via <link rel="stylesheet" href="/assets/css/site.css">. */

/* Self-hosted variable fonts — privacy-respecting, no external requests */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('/assets/fonts/InterVariable.woff2') format('woff2-variations');
}
@font-face {
  font-family: 'Source Serif 4';
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url('/assets/fonts/SourceSerif4-Variable-latin.woff2') format('woff2-variations');
  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+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Source Serif 4';
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url('/assets/fonts/SourceSerif4-Variable-latin-ext.woff2') format('woff2-variations');
  unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
  color-scheme: light dark;

  --paper:   light-dark(#FAF8F4, #14120E);
  --linen:   light-dark(#F2EEE6, #1E1B16);
  --ink:     light-dark(#1A1814, #F2EEE6);
  --graphite:light-dark(#5C574F, #A8A097);
  --rule:    light-dark(#E2DCD0, #2C2820);
  --bracket: light-dark(#E85D1A, #F2864A);

  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 80px;
  --s-9: 128px;

  --container: 1180px;
  --reading: 680px;
  --gutter: 24px;

  --ease: cubic-bezier(.2,.7,.2,1);
}

@media (min-width: 768px) {
  :root { --gutter: 48px; }
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 400;
  font-size: 17px;
  line-height: 28px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

@media (max-width: 640px) {
  body { font-size: 16px; line-height: 26px; }
}

a { color: inherit; text-decoration: none; }

/* ──────────────────────────────────────────── Header */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--paper);
  height: 64px;
  border-bottom: 1px solid transparent;
  transition: border-color 120ms var(--ease);
}
.header[data-scrolled="true"] { border-bottom-color: var(--rule); }

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.lockup {
  display: inline-flex;
  align-items: baseline;
  gap: 0.32em;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.2px;
  color: var(--ink);
}
.lockup .brackets {
  color: var(--bracket);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.header-nav {
  display: inline-flex;
  align-items: center;
  gap: var(--s-5);
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 15px;
}
.header-nav a {
  position: relative;
  color: var(--ink);
  transition: color 180ms var(--ease);
}
.header-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 1px;
  background: var(--bracket);
  opacity: 0;
  transition: opacity 180ms var(--ease);
}
.header-nav a:hover::after,
.header-nav a[aria-current="page"]::after { opacity: 1; }

/* ──────────────────────────────────────────── Hero */
.hero {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--s-9) var(--gutter) var(--s-8);
}
@media (max-width: 640px) {
  .hero { padding-top: var(--s-7); padding-bottom: var(--s-7); }
}

.hero h1 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-weight: 380;
  font-size: 56px;
  line-height: 60px;
  letter-spacing: -0.5px;
  color: var(--ink);
  max-width: 18ch;
  text-wrap: balance;
}
@media (max-width: 640px) {
  .hero h1 { font-size: 36px; line-height: 40px; }
}

.hero-sub {
  margin-top: var(--s-5);
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  font-size: 17px;
  line-height: 28px;
  color: var(--graphite);
  max-width: 56ch;
}

/* ──────────────────────────────────────────── Sections */
.section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.category {
  padding: var(--s-7) 0;
  border-top: 1px solid var(--rule);
}
.category:first-of-type { border-top: 1px solid var(--rule); }

.category-glyph {
  color: var(--bracket);
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.12em;
  margin-bottom: var(--s-3);
  display: inline-block;
}

.category-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-3);
  margin-bottom: var(--s-7);
}
.category-head h2 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-weight: 420;
  font-size: 32px;
  line-height: 36px;
  letter-spacing: -0.25px;
  color: var(--ink);
}
@media (max-width: 640px) {
  .category-head h2 { font-size: 24px; line-height: 28px; }
}
.category-eyebrow {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 12px;
  line-height: 16px;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--graphite);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--s-6);
}
.grid.single {
  grid-template-columns: minmax(320px, calc((100% - 2 * var(--s-6)) / 3));
}
@media (max-width: 1100px) {
  .grid.single { grid-template-columns: minmax(320px, calc((100% - var(--s-6)) / 2)); }
}
@media (max-width: 720px) {
  .grid.single { grid-template-columns: 1fr; }
}

/* ──────────────────────────────────────────── Card */
.card {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  padding: var(--s-5);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 16px;
  color: var(--ink);
  position: relative;
  overflow: hidden;
  transition:
    border-color 180ms var(--ease),
    transform 180ms var(--ease);
}
@media (max-width: 640px) {
  .card { padding: var(--s-4); }
}

.card:hover {
  border-color: color-mix(in oklab, var(--ink) 30%, transparent);
  transform: translateY(-2px);
}

.card-icon {
  width: 64px;
  height: 64px;
  border-radius: 12px;
  background: var(--linen);
  display: grid;
  place-items: center;
  overflow: hidden;
  flex-shrink: 0;
}
.card-icon img { width: 100%; height: 100%; display: block; object-fit: cover; }
.card-icon svg { width: 100%; height: 100%; display: block; }

.card-title {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 20px;
  line-height: 24px;
  letter-spacing: -0.1px;
  color: var(--ink);
  margin-top: var(--s-3);
  transition: font-weight 180ms var(--ease);
}
@media (max-width: 640px) {
  .card-title { font-size: 18px; line-height: 22px; }
}
.card:hover .card-title { font-weight: 650; }

.card-tagline {
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  font-size: 15px;
  line-height: 22px;
  color: var(--graphite);
  flex: 1;
}
@media (max-width: 640px) {
  .card-tagline { font-size: 14px; line-height: 20px; }
}

.card-platforms {
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 12px;
  line-height: 16px;
  letter-spacing: 0.2px;
  color: var(--graphite);
  margin-top: var(--s-2);
}
@media (max-width: 640px) {
  .card-platforms { font-size: 11px; line-height: 14px; }
}

.card-strip {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 4px;
  background: var(--accent, var(--ink));
  transition: height 180ms var(--ease);
}
.card:hover .card-strip { height: 6px; }

/* ──────────────────────────────────────────── About strip */
.about {
  background: var(--linen);
  margin-top: var(--s-8);
}
.about-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--s-8) var(--gutter);
}
.about-body {
  max-width: var(--reading);
  color: var(--ink);
}
.about-body p {
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  font-size: 17px;
  line-height: 28px;
  color: var(--ink);
}
.about-body p + p { margin-top: var(--s-4); }
.about-link {
  margin-top: var(--s-5);
  display: inline-block;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 15px;
  color: var(--ink);
  border-bottom: 1px solid transparent;
  transition: border-color 180ms var(--ease);
}
.about-link:hover { border-bottom-color: var(--bracket); }

/* ──────────────────────────────────────────── Forms (contact, etc.) */
.form-section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter) var(--s-9);
}

.form {
  display: grid;
  gap: var(--s-5);
  max-width: 560px;
}

.form-row { display: grid; gap: var(--s-2); }

.form-row label {
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 14px;
  line-height: 20px;
  color: var(--graphite);
}

.form-row input,
.form-row select,
.form-row textarea {
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 24px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: var(--s-3) var(--s-4);
  width: 100%;
  transition: border-color 180ms var(--ease);
  appearance: none;
  -webkit-appearance: none;
}

.form-row select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' fill='%235C574F'><path d='M6 8.5L1.5 4h9z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 16px center;
  background-size: 12px;
  padding-right: var(--s-7);
}

.form-row textarea {
  min-height: 200px;
  resize: vertical;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  border-color: var(--ink);
  outline: none;
}

.form-row input::placeholder,
.form-row textarea::placeholder {
  color: var(--graphite);
  opacity: 0.7;
}

.form-submit {
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 15px;
  line-height: 24px;
  background: var(--ink);
  color: var(--paper);
  border: none;
  border-radius: 8px;
  padding: var(--s-3) var(--s-5);
  cursor: pointer;
  align-self: start;
  transition: transform 180ms var(--ease);
}
.form-submit:hover { transform: translateY(-1px); }

.form-notice {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  line-height: 20px;
  color: var(--graphite);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--ink);
  border-radius: 8px;
  padding: var(--s-3) var(--s-4);
  margin: 0;
}
.form-notice strong { color: var(--ink); font-weight: 600; }

/* ──────────────────────────────────────────── Long-form prose (privacy, terms, etc.) */
.prose {
  max-width: var(--reading);
  margin: 0 auto;
  padding: 0 var(--gutter) var(--s-9);
  color: var(--ink);
}

.prose h2 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-weight: 420;
  font-size: 24px;
  line-height: 30px;
  letter-spacing: -0.25px;
  margin-top: var(--s-7);
  margin-bottom: var(--s-3);
  color: var(--ink);
  text-wrap: balance;
}
.prose h2:first-child { margin-top: 0; }

.prose h3 {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 17px;
  line-height: 24px;
  margin-top: var(--s-5);
  margin-bottom: var(--s-2);
  color: var(--ink);
}

.prose p,
.prose ul,
.prose ol {
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 26px;
  color: var(--ink);
  margin-bottom: var(--s-4);
}

.prose ul,
.prose ol { padding-left: var(--s-5); }
.prose ul ul,
.prose ol ol { margin-top: var(--s-2); margin-bottom: 0; }
.prose li { margin-bottom: var(--s-2); }
.prose li > p { margin-bottom: var(--s-2); }
.prose li > ul,
.prose li > ol { margin-bottom: var(--s-2); }

.prose strong { font-weight: 600; color: var(--ink); }

.prose a {
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
  transition: border-color 180ms var(--ease);
  word-break: break-word;
}
.prose a:hover { border-bottom-color: var(--bracket); }

.prose .prose-meta {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  line-height: 20px;
  color: var(--graphite);
  margin-top: var(--s-7);
  padding-top: var(--s-4);
  border-top: 1px solid var(--rule);
}

/* ──────────────────────────────────────────── Footer */
.footer {
  background: var(--linen);
  border-top: 1px solid var(--rule);
}
.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--s-7) var(--gutter);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--s-5);
  align-items: center;
}
@media (max-width: 720px) {
  .footer-inner { grid-template-columns: 1fr; }
}
.footer-meta {
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  font-size: 13px;
  line-height: 20px;
  color: var(--graphite);
}
.footer-meta .lockup { font-size: 14px; margin-bottom: var(--s-1); }
.footer-links {
  display: inline-flex;
  flex-wrap: wrap;
  gap: var(--s-4);
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  font-size: 13px;
  color: var(--graphite);
}
.footer-links a {
  color: var(--graphite);
  transition: color 180ms var(--ease);
}
.footer-links a:hover { color: var(--ink); }

/* ──────────────────────────────────────────── Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0ms !important;
    animation-duration: 0ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ──────────────────────────────────────────── Accessibility */
:focus-visible {
  outline: 2px solid var(--bracket);
  outline-offset: 3px;
  border-radius: 4px;
}
.card:focus-visible { outline-offset: 2px; }

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--ink);
  color: var(--paper);
  padding: var(--s-3) var(--s-4);
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 14px;
  border-radius: 0 0 8px 0;
  z-index: 100;
  transition: top 180ms var(--ease);
}
.skip-link:focus { top: 0; }