/* ============================================================
   Shok + Koda Conversion Studio — design system
   Palette and typography derived from danrussell.co/forge/ground
   ============================================================ */

:root {
  /* ground + ink */
  --bg: #f2f4f6;
  --surface: #ffffff;
  --ink: #10151f;
  --ink-soft: #3a4350;
  --muted: #5c6670;
  --faint: #96a0ac;
  --line: #e1e6ec;

  /* accents */
  --teal: #2e9e96;
  --teal-dark: #1f8078;
  --teal-light: #3dbdb3;
  --orange: #ff4f00;
  --orange-dark: #e04600;
  --amber: #ffb53b;

  /* dark sections */
  --dark: #10151f;
  --dark-line: #262e3b;
  --dark-text: #e6eaef;
  --dark-muted: #96a0ac;

  --serif: "Fraunces", "Georgia", serif;
  --sans: "Inter", -apple-system, "Helvetica Neue", sans-serif;
  --mono: "IBM Plex Mono", "SF Mono", monospace;

  --maxw: 1160px;
  --radius: 6px;
}

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

html { scroll-behavior: smooth; }

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

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

a { color: var(--teal-dark); text-decoration: none; }
a:hover { color: var(--teal); }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- type ---------- */

h1, h2, h3.serif {
  font-family: var(--serif);
  font-weight: 420;
  letter-spacing: -0.015em;
  line-height: 1.08;
  color: var(--ink);
}

h1 { font-size: clamp(2.6rem, 6vw, 4.4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal-dark);
  margin-bottom: 1.1rem;
}

.lede {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--ink-soft);
  max-width: 640px;
}

.mono-caption {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- buttons ---------- */

.btn {
  display: inline-block;
  white-space: nowrap;
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 1rem 1.9rem;
  border-radius: 3px;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { background: var(--orange-dark); color: #fff; }

.btn-ghost { border: 1px solid var(--ink); color: var(--ink); }
.btn-ghost:hover { border-color: var(--teal-dark); color: var(--teal-dark); }

.btn-ghost-dark { border: 1px solid var(--dark-muted); color: var(--dark-text); }
.btn-ghost-dark:hover { border-color: var(--teal-light); color: var(--teal-light); }

/* ---------- header ---------- */

.site-header {
  background: rgba(242, 244, 246, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); }

.brand:hover { color: var(--ink); }

.brand .logo-slot {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
}

.brand .wordmark {
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.brand .wordmark span { color: var(--teal-dark); }

.brand .descriptor {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
  margin-top: 2px;
}

.site-nav { display: flex; align-items: center; gap: 2rem; }

.site-nav a:not(.btn) {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.site-nav a:not(.btn):hover { color: var(--teal-dark); }

.site-nav .btn { padding: 0.65rem 1.2rem; }

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

.section { padding: 96px 0; }
.section-tight { padding: 72px 0; }

.section-head { max-width: 720px; margin-bottom: 3.2rem; }
.section-head p { margin-top: 1.1rem; color: var(--muted); }

.dark-section {
  background: var(--dark);
  color: var(--dark-text);
}

.dark-section h2, .dark-section h3.serif { color: var(--dark-text); }
.dark-section .eyebrow { color: var(--teal-light); }
.dark-section p { color: var(--dark-muted); }

/* ---------- hero ---------- */

.hero { padding: 110px 0 90px; text-align: center; }

.hero .lede { margin: 1.6rem auto 2.4rem; }

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; justify-content: center; }

.hero-note {
  margin-top: 1.2rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- principles ---------- */

.principles-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.principle-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.6rem 2.4rem;
}

.principle-card .kanji {
  font-size: 2.4rem;
  line-height: 1;
  color: var(--teal-dark);
  margin-bottom: 1.4rem;
}

.principle-card h3 {
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.principle-card .definition {
  font-family: var(--serif);
  font-size: 1.35rem;
  line-height: 1.3;
  color: var(--ink);
  margin-bottom: 1rem;
}

.principle-card p { color: var(--muted); font-size: 0.98rem; }

/* ---------- results strip ---------- */

.results-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.result-cell {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  padding: 2rem 1.6rem;
}

.result-cell .figure {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  font-weight: 450;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.1;
}

.result-cell .measure {
  margin-top: 0.7rem;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--muted);
}

.result-cell .source {
  margin-top: 0.7rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal-dark);
}

/* ---------- work grid ---------- */

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

.case-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.case-card:hover { border-color: var(--teal); color: var(--ink); transform: translateY(-2px); }

.case-card .thumb { aspect-ratio: 16/10; overflow: hidden; }

.case-card .thumb img { width: 100%; height: 100%; object-fit: cover; }

.case-card .body { padding: 1.5rem 1.5rem 1.7rem; display: flex; flex-direction: column; gap: 0.55rem; flex: 1; }

.case-card .case-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal-dark);
}

.case-card .headline {
  font-family: var(--serif);
  font-size: 1.45rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.case-card .measure { font-size: 0.88rem; color: var(--muted); flex: 1; }

.case-card .read {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: 0.6rem;
}

.case-card:hover .read { color: var(--teal-dark); }

.work-footnote {
  margin-top: 2rem;
  font-size: 0.85rem;
  color: var(--muted);
  max-width: 640px;
}

/* ---------- method ---------- */

.method-list { counter-reset: step; border-top: 1px solid var(--line); }

.method-step {
  display: grid;
  grid-template-columns: 90px 300px 1fr;
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--line);
}

.method-step .num {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--teal-dark);
  padding-top: 0.35rem;
}

.method-step h3 {
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 450;
  letter-spacing: -0.01em;
}

.method-step p { color: var(--muted); font-size: 0.98rem; }

/* ---------- founder section ---------- */

.founder-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 4rem;
  align-items: center;
}

.founder-photo {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--dark-line);
}

.founder-photo img { width: 100%; height: auto; }

.founder-copy p { margin-bottom: 1.1rem; font-size: 1.02rem; }

.founder-copy .founder-name {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal-light);
  margin: 1.4rem 0 1.6rem;
}

/* ---------- testimonials ---------- */

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

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

.quote-card blockquote {
  font-size: 0.97rem;
  color: var(--ink-soft);
  flex: 1;
}

.quote-card .attribution { margin-top: 1.4rem; }

.quote-card .attribution .name { font-weight: 600; font-size: 0.92rem; }

.quote-card .attribution .role {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 2px;
}

/* ---------- CTA band ---------- */

.cta-band { text-align: center; }

.cta-band h2 { max-width: 700px; margin: 0 auto 1.3rem; }

.cta-band p { max-width: 540px; margin: 0 auto 2.2rem; color: var(--muted); }

.dark-section.cta-band p { color: var(--dark-muted); }

/* ---------- case study pages ---------- */

.case-hero { padding: 90px 0 60px; }

.case-hero .meta-row {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
  margin-top: 2.4rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
}

.meta-item .mono-caption { margin-bottom: 0.3rem; }
.meta-item .value { font-size: 0.95rem; color: var(--ink-soft); }

.case-figure {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.8rem 2.4rem;
  margin: 0 0 3rem;
}

.case-figure .figure {
  font-family: var(--serif);
  font-size: clamp(2.6rem, 6vw, 4rem);
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--ink);
}

.case-figure .measure { margin-top: 1rem; color: var(--muted); max-width: 560px; }

.case-figure .source {
  margin-top: 1.2rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal-dark);
}

.case-body { max-width: 720px; }

.case-body h2 {
  font-size: 1.7rem;
  margin: 2.8rem 0 1rem;
}

.case-body p { margin-bottom: 1.2rem; color: var(--ink-soft); }

.case-body ul { margin: 0 0 1.2rem 1.2rem; color: var(--ink-soft); }
.case-body li { margin-bottom: 0.5rem; }

.case-quote {
  border-left: 3px solid var(--teal);
  padding: 0.4rem 0 0.4rem 1.6rem;
  margin: 2.4rem 0;
}

.case-quote blockquote { font-family: var(--serif); font-size: 1.25rem; line-height: 1.4; color: var(--ink); }

.case-quote .attribution { margin-top: 0.8rem; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }

.case-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--line);
  padding-top: 2rem;
  margin-top: 4rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---------- about page ---------- */

.about-grid {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 4rem;
  align-items: start;
}

.about-photo { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); position: sticky; top: 100px; }

.about-copy p { margin-bottom: 1.25rem; color: var(--ink-soft); }

.about-copy h2 { font-size: 1.7rem; margin: 2.6rem 0 1rem; }

/* ---------- footer ---------- */

.site-footer {
  background: var(--dark);
  color: var(--dark-muted);
  padding: 56px 0;
}

.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.site-footer .foot-brand {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--dark-text);
}

.site-footer .foot-brand span { color: var(--teal-light); }

.site-footer nav { display: flex; gap: 1.6rem; }

.site-footer nav a {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dark-muted);
}

.site-footer nav a:hover { color: var(--teal-light); }

.site-footer .legal { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.06em; }

/* ---------- responsive ---------- */

@media (max-width: 960px) {
  .results-strip { grid-template-columns: 1fr 1fr; }
  .work-grid { grid-template-columns: 1fr 1fr; }
  .founder-grid, .about-grid { grid-template-columns: 1fr; gap: 2.4rem; }
  .founder-photo { max-width: 420px; }
  .about-photo { position: static; max-width: 420px; }
  .method-step { grid-template-columns: 60px 1fr; }
  .method-step p { grid-column: 2; }
  .quote-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .section { padding: 64px 0; }
  .hero { padding: 72px 0 56px; }
  .principles-grid, .work-grid, .results-strip { grid-template-columns: 1fr; }
  .site-nav a:not(.btn) { display: none; }
  .site-nav .btn { padding: 0.55rem 0.9rem; font-size: 0.72rem; }
  .brand .descriptor { display: none; }
  .brand .logo-slot { width: 30px; height: 30px; flex-basis: 30px; }
}

/* ---------- CTA note ---------- */

.cta-note {
  margin-top: 1.2rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dark-muted);
}

/* ---------- featured quote (results section) ---------- */

.featured-quote { max-width: 860px; margin-top: 3rem; }

/* ---------- FAQ ---------- */

.faq-list { border-top: 1px solid var(--line); max-width: 860px; }

.faq-list details { border-bottom: 1px solid var(--line); }

.faq-list summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1.5rem;
  padding: 1.5rem 0;
  font-family: var(--serif);
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.faq-list summary::-webkit-details-marker { display: none; }

.faq-list summary::after {
  content: "+";
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--teal-dark);
  flex-shrink: 0;
}

.faq-list details[open] summary::after { content: "\2212"; }

.faq-list .answer {
  padding: 0 2.5rem 1.6rem 0;
  color: var(--muted);
  max-width: 720px;
}

/* ---------- 404 ---------- */

.notfound { padding: 130px 0 110px; text-align: center; }
.notfound .lede { margin: 1.4rem auto 2.4rem; }