/* ncoo.dev : direction : ingénierie franche.
   Typo système lourde et serrée, mono système pour les labels.
   Blanc franc, noir, un accent orange international. Angles droits, règles nettes. */

:root {
  --bg: #ffffff;
  --bg-alt: #f4f4f2;
  --ink: #111111;
  --ink-soft: #565656;
  --line: #e2e2df;
  --line-strong: #111111;
  --accent: #e8490f;
  --accent-ink: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --bg-alt: #1a1a19;
    --ink: #ececea;
    --ink-soft: #a3a3a0;
    --line: #2c2c2a;
    --line-strong: #ececea;
    --accent: #ff6a33;
    --accent-ink: #121212;
  }
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.028em;
}

.mono, .kicker, .tag {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.wrap {
  max-width: 68rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }

/* ---------- Nav ---------- */

.nav { border-bottom: 3px solid var(--line-strong); }

.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: 1.1rem;
  padding-bottom: 1.1rem;
}

.nav-name {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
}

.nav-name b { color: var(--accent); }

.nav-links { display: flex; align-items: center; gap: 1.4rem; flex-wrap: wrap; }

.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.9375rem;
}

.nav-links a:hover { color: var(--ink); }

.lang {
  display: flex;
  gap: 0.15rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.78rem;
}

.lang a, .lang span { color: var(--ink-soft); text-decoration: none; padding: 0.1rem 0.35rem; }

.lang [aria-current] {
  color: var(--bg);
  background: var(--ink);
  font-weight: 700;
}

/* ---------- Boutons ---------- */

.btn {
  display: inline-block;
  background: var(--ink);
  color: var(--bg);
  font-weight: 700;
  font-size: 0.9688rem;
  padding: 0.9rem 1.6rem;
  text-decoration: none;
  transition: background 120ms ease, color 120ms ease;
}

.btn:hover { background: var(--accent); color: var(--accent-ink); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
}

.btn-ghost:hover { background: var(--ink); color: var(--bg); }

.btn-note {
  display: block;
  margin-top: 0.85rem;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

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

.hero { padding: 5rem 0 4.5rem; }

.hero .kicker {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 1.75rem;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  max-width: 16ch;
  margin-bottom: 1.75rem;
  text-wrap: balance;
}

.hero .lede {
  font-size: 1.2rem;
  color: var(--ink-soft);
  max-width: 36rem;
  margin-bottom: 2.5rem;
}

.hero .lede strong { color: var(--ink); }

.hero .cta-row { display: flex; gap: 0.85rem; flex-wrap: wrap; align-items: center; }

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 2.75rem;
  border: 1px solid var(--line);
  width: fit-content;
  max-width: 100%;
}

.hero-tags span {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.78rem;
  padding: 0.45rem 0.9rem;
  color: var(--ink-soft);
}

.hero-tags span + span { border-left: 1px solid var(--line); }

/* ---------- Sections ---------- */

section { padding: 4.5rem 0; }

.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.3rem);
  margin-bottom: 2.25rem;
  max-width: 26ch;
}

.section-intro {
  color: var(--ink-soft);
  max-width: 40rem;
  margin: -1.25rem 0 2.5rem;
}

.alt { background: var(--bg-alt); }

/* ---------- Preuves ---------- */

.proofs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.25rem;
}

.proof {
  background: var(--bg);
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  padding: 1.75rem;
}

.alt .proof { background: var(--bg); }

.proof .figure {
  font-size: clamp(2.3rem, 4.5vw, 3.1rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.proof .figure small {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.3em;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--accent);
  margin-top: 0.5rem;
  text-transform: uppercase;
}

.proof p { color: var(--ink-soft); font-size: 0.9375rem; }

.proofs-note { margin-top: 2rem; font-size: 0.875rem; color: var(--ink-soft); }

/* ---------- Manifeste ---------- */

.manifesto { max-width: 44rem; }

.manifesto p { font-size: 1.15rem; }

.manifesto p + p { margin-top: 1.25rem; }

.manifesto strong { color: var(--accent); }

/* ---------- Ce qu'on construit ---------- */

.builds {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(23rem, 1fr));
  gap: 1.25rem;
}

.build {
  border: 1px solid var(--line);
  padding: 1.75rem;
  background: var(--bg);
}

.build .tag {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--accent);
  display: block;
  margin-bottom: 0.85rem;
}

.build h3 { font-size: 1.2rem; margin-bottom: 0.6rem; letter-spacing: -0.015em; }

.build p { color: var(--ink-soft); font-size: 0.9375rem; }

.builds-note {
  margin-top: 2rem;
  padding: 1.4rem 1.75rem;
  border-left: 3px solid var(--accent);
  background: var(--bg-alt);
  max-width: 48rem;
}

.alt .builds-note { background: var(--bg); }

/* ---------- Méthode ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 0;
  border: 1px solid var(--line);
}

.step {
  counter-increment: step;
  padding: 1.75rem;
  border-left: 1px solid var(--line);
}

.steps { counter-reset: step; }

.step:first-child { border-left: none; }

.step::before {
  content: counter(step, decimal-leading-zero);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  display: block;
  margin-bottom: 0.6rem;
}

.step h3 { font-size: 1.1rem; margin-bottom: 0.45rem; letter-spacing: -0.015em; }

.step p { color: var(--ink-soft); font-size: 0.9063rem; }

/* ---------- CTA final ---------- */

.final { padding: 5rem 0; }

.final .wrap { border-top: 3px solid var(--line-strong); padding-top: 4.5rem; }

.final h2 { font-size: clamp(1.9rem, 4.5vw, 2.8rem); max-width: 20ch; margin-bottom: 1.25rem; }

.final p { color: var(--ink-soft); max-width: 36rem; margin-bottom: 2rem; }

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

footer {
  border-top: 1px solid var(--line);
  padding: 2.25rem 0;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

footer .wrap { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }

footer a { color: var(--ink-soft); }

footer nav { display: flex; gap: 1.25rem; flex-wrap: wrap; }

/* ---------- Mentions ---------- */

.legal { padding: 4rem 0; max-width: 44rem; }

.legal h1 { font-size: 2rem; margin-bottom: 2rem; }

.legal h2 { font-size: 1.2rem; margin: 2rem 0 0.6rem; }

.legal p { color: var(--ink-soft); }

@media (max-width: 900px) {
  .step { border-left: none; }
  .step + .step { border-top: 1px solid var(--line); }
}

@media (max-width: 640px) {
  .hero { padding: 3.25rem 0 3rem; }
  section { padding: 3.25rem 0; }
}