/* ============================================
   Fonts — self-hosted, no third-party requests
   ============================================ */

@font-face {
  font-family: 'Fraunces';
  src: url('../fonts/Fraunces-Variable.woff2') format('woff2-variations'),
       url('../fonts/Fraunces-Variable.woff2') format('woff2');
  font-weight: 500 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Public Sans';
  src: url('../fonts/PublicSans-Variable.woff2') format('woff2-variations'),
       url('../fonts/PublicSans-Variable.woff2') format('woff2');
  font-weight: 400 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Space Mono';
  src: url('../fonts/SpaceMono-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Space Mono';
  src: url('../fonts/SpaceMono-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ============================================
   Tokens
   ============================================ */

:root {
  --bg: #F3F3EF;
  --bg-surface: #FBFAF7;
  --text: #171712;
  --text-soft: #5B5A50;
  --accent: #C9791E;
  --accent-contrast: #FFFFFF;
  --line: #DEDCD2;
  --focus-ring: #C9791E;

  --font-display: 'Fraunces', Georgia, 'Iowan Old Style', serif;
  --font-body: 'Public Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Space Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;

  --measure: 65ch;
  --container: 1140px;
  --container-narrow: 760px;

  --space-section: clamp(4.5rem, 9vw, 8rem);
  --radius: 4px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #131409;
    --bg-surface: #1C1D14;
    --text: #EDECE3;
    --text-soft: #A7A597;
    --accent: #E3AA51;
    --accent-contrast: #14140D;
    --line: #34342A;
    --focus-ring: #E3AA51;
  }
}

:root[data-theme="dark"] {
  --bg: #131409;
  --bg-surface: #1C1D14;
  --text: #EDECE3;
  --text-soft: #A7A597;
  --accent: #E3AA51;
  --accent-contrast: #14140D;
  --line: #34342A;
  --focus-ring: #E3AA51;
}

/* ============================================
   Reset
   ============================================ */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

::selection { background: var(--accent); color: var(--accent-contrast); }

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-contrast);
  padding: 0.75rem 1.25rem;
  z-index: 100;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  text-wrap: balance;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2.25rem, 4vw + 1rem, 4.25rem);
  line-height: 1.06;
  font-weight: 600;
  max-width: 18ch;
}

h2 {
  font-size: clamp(1.65rem, 2.4vw + 1rem, 2.5rem);
  line-height: 1.16;
  max-width: 20ch;
}

h3 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.005em;
}

p { max-width: var(--measure); }
p + p { margin-top: 1em; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.lede {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 1.6vw + 1rem, 1.9rem);
  line-height: 1.35;
  font-weight: 500;
  max-width: 22ch;
  text-wrap: balance;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-soft);
  max-width: 52ch;
  margin-top: 1.25rem;
}

.section-note {
  color: var(--text-soft);
  font-size: 0.95rem;
  max-width: 60ch;
  margin-top: 0.75rem;
}

.text-link {
  font-weight: 600;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
  display: inline-block;
  margin-top: 1.25rem;
}
.text-link:hover { color: var(--accent); }

/* ============================================
   Layout
   ============================================ */

.wrap {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.wrap-narrow {
  max-width: var(--container-narrow);
}

section {
  padding-block: var(--space-section);
}

/* ============================================
   Header
   ============================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 8px 24px -20px rgba(0, 0, 0, 0.4);
}

.header-inner {
  max-width: var(--container);
  margin-inline: auto;
  padding: 1.1rem clamp(1.25rem, 4vw, 2.5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.wordmark {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}
.wordmark::after {
  content: '_';
  color: var(--accent);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-contrast);
}
.btn-primary:hover { transform: translateY(-1px); }

.btn-ghost {
  border-color: var(--line);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); }

.btn-small {
  padding: 0.6rem 1.1rem;
  font-size: 0.875rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
  margin-top: 2rem;
}

/* ============================================
   Hero
   ============================================ */

.hero {
  padding-block: clamp(4rem, 10vw, 7rem) var(--space-section);
}

.stat-strip {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1.5rem, 4vw, 3rem);
  margin-top: 3.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
}
.stat-strip > div {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}
.stat-strip dt {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
}
.stat-strip dd {
  font-size: 0.95rem;
  color: var(--text-soft);
}

/* ============================================
   Problem strip
   ============================================ */

.problem {
  background: var(--bg-surface);
  border-block: 1px solid var(--line);
}

/* ============================================
   Offers
   ============================================ */

.offer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.75rem;
}

.offer-card {
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
}

.offer-index {
  font-family: var(--font-mono);
  color: var(--text-soft);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.offer-card h3 { margin-bottom: 0.75rem; }
.offer-card p { max-width: none; }

.offer-list {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.offer-list li {
  font-size: 0.92rem;
  color: var(--text-soft);
  padding-left: 1.1rem;
  position: relative;
}
.offer-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent);
}

.offer-card .text-link { margin-top: auto; padding-top: 1.25rem; }

/* ============================================
   Process
   ============================================ */

.process-list {
  margin-top: 2.75rem;
  display: flex;
  flex-direction: column;
}

.process-list li {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1.5rem;
  padding-block: 1.75rem;
  border-top: 1px solid var(--line);
  align-items: baseline;
}
.process-list li:last-child { border-bottom: 1px solid var(--line); }

.process-num {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.95rem;
}

.process-list h3 { margin-bottom: 0.5rem; }
.process-list p { color: var(--text-soft); max-width: 56ch; }

/* ============================================
   Why AI-native
   ============================================ */

.why-ai {
  background: var(--bg-surface);
  border-block: 1px solid var(--line);
}
.why-ai p:not(.eyebrow) { color: var(--text-soft); font-size: 1.05rem; margin-top: 1.25rem; }

/* ============================================
   Selected work
   ============================================ */

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 2.75rem;
}

.case-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
}

.case-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-soft);
  border: 1px solid var(--line);
  display: inline-block;
  padding: 0.25rem 0.6rem;
  border-radius: 100px;
  margin-bottom: 1rem;
}

.case-card h3 { margin-bottom: 0.4rem; }
.case-meta {
  color: var(--accent);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}
.case-card p:not(.case-tag):not(.case-meta) { color: var(--text-soft); max-width: none; }

/* ============================================
   About / Contact
   ============================================ */

.about p:not(.eyebrow),
.contact p:not(.eyebrow) {
  color: var(--text-soft);
  font-size: 1.05rem;
  margin-top: 1.25rem;
}

.contact { border-top: 1px solid var(--line); }

/* ============================================
   Footer
   ============================================ */

.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 2.5rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 2rem;
  font-size: 0.9rem;
  color: var(--text-soft);
}

.wordmark-small { font-size: 0.95rem; }

.footer-tagline { margin-right: auto; }

.footer-email:hover { color: var(--accent); }

.footer-year { color: var(--text-soft); }

/* ============================================
   Reveal-on-scroll
   ============================================ */

@media (prefers-reduced-motion: no-preference) {
  [data-reveal] {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  [data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 860px) {
  .offer-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .process-list li { grid-template-columns: 3rem 1fr; }
}

@media (max-width: 560px) {
  .header-inner { padding-block: 0.9rem; }
  .btn-small { padding: 0.55rem 0.9rem; font-size: 0.8rem; }
  .stat-strip { flex-direction: column; gap: 0.85rem; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-tagline { margin-right: 0; }
}