/* ============================================================
   SkolPilot — Système de design du site vitrine
   ============================================================
   Palette "papier & cachet" : encre bleu-nuit, papier ivoire-sauge,
   accent laiton (cachet de validation), vert institutionnel (validé).
   Volontairement à l'écart des deux clichés IA du moment (crème/terracotta
   et noir/vert acide) — ancré dans le vrai objet du produit : bulletins,
   tampons de validation, papier réglé.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,600;9..144,680&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  /* Couleurs */
  --ink:        #1C2333;
  --ink-soft:   #4A5268;
  --ink-faint:  #8890A0;
  --paper:      #F1F2EC;
  --paper-raised: #FFFFFF;
  --seal:       #A9824F;
  --seal-deep:  #8B6B3D;
  --seal-pale:  #F2E9D8;
  --pine:       #37503F;
  --pine-soft:  #E4EBE3;
  --rule:       #DBD9CE;
  --rule-strong:#C7C4B5;
  --clay:       #B4502F;

  /* Typo */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  /* Échelle */
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(28,35,51,.04), 0 12px 32px -12px rgba(28,35,51,.14);
  --shadow-lift: 0 4px 8px rgba(28,35,51,.06), 0 24px 48px -16px rgba(28,35,51,.2);
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Motif de fond discret : lignes de "papier réglé" */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: repeating-linear-gradient(
    to bottom, transparent, transparent 63px, rgba(199,196,181,.35) 64px
  );
  opacity: .5;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  margin: 0 0 .4em;
  letter-spacing: -.01em;
}
h1 { font-size: clamp(2.4rem, 4.4vw, 3.6rem); font-weight: 680; }
h2 { font-size: clamp(1.8rem, 3vw, 2.5rem); }
h3 { font-size: 1.3rem; }
p { margin: 0 0 1em; color: var(--ink-soft); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--seal-deep);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: '';
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--seal);
  display: inline-block;
}

.wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 1;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  padding: 13px 24px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: #10151F; box-shadow: var(--shadow-lift); }
.btn-seal { background: var(--seal); color: #fff; }
.btn-seal:hover { background: var(--seal-deep); box-shadow: 0 10px 24px -8px rgba(169,130,79,.55); }
.btn-ghost { background: transparent; border-color: var(--rule-strong); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-lg { padding: 16px 30px; font-size: 16px; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(241,242,236,.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 78px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-family: var(--font-display); font-weight: 680; font-size: 20px; }
.logo-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: var(--ink);
  color: var(--paper);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-weight: 600; font-size: 14px;
  flex-shrink: 0;
}
nav.main-nav { display: flex; align-items: center; gap: 4px; }
nav.main-nav a {
  padding: 9px 14px; border-radius: 999px; text-decoration: none;
  font-size: 14.5px; font-weight: 500; color: var(--ink-soft);
  transition: background .15s, color .15s;
}
nav.main-nav a:hover, nav.main-nav a.active { background: var(--paper-raised); color: var(--ink); box-shadow: var(--shadow); }
.header-cta { display: flex; align-items: center; gap: 10px; }
.nav-toggle { display: none; }

@media (max-width: 900px) {
  nav.main-nav { display: none; }
  .nav-toggle { display: flex; }
}

/* ===== Sections ===== */
section { position: relative; z-index: 1; padding: 96px 0; }
section.tight { padding: 64px 0; }
.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ===== Cards ===== */
.card {
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
}

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 860px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* ===== Feature cards ===== */
.feature-card { display: flex; flex-direction: column; gap: 14px; }
.feature-icon {
  width: 44px; height: 44px; border-radius: 11px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  background: var(--pine-soft); color: var(--pine);
}
.feature-card h3 { margin-bottom: 2px; }
.feature-card p { margin: 0; font-size: 14.5px; }

/* ===== Cachet / seal badge (élément signature) ===== */
.cachet {
  --size: 84px;
  width: var(--size); height: var(--size);
  border-radius: 50%;
  border: 2px solid var(--seal);
  display: flex; align-items: center; justify-content: center;
  text-align: center;
  color: var(--seal-deep);
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  line-height: 1.3;
  position: relative;
  transform: rotate(-9deg);
  background: var(--seal-pale);
  box-shadow: 0 8px 20px -8px rgba(169,130,79,.5);
}
.cachet::before {
  content: '';
  position: absolute; inset: 6px;
  border: 1px dashed var(--seal);
  border-radius: 50%;
  opacity: .6;
}

/* ===== Pills / badges ===== */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono); font-size: 12px; font-weight: 600;
  padding: 4px 11px; border-radius: 999px;
  background: var(--pine-soft); color: var(--pine);
}
.pill.gold { background: var(--seal-pale); color: var(--seal-deep); }

/* ===== Footer ===== */
footer.site-footer { border-top: 1px solid var(--rule); padding: 64px 0 32px; }
footer.site-footer .grid-4 { margin-bottom: 48px; }
footer.site-footer h4 { font-family: var(--font-body); font-size: 13px; text-transform: uppercase; letter-spacing: .07em; color: var(--ink-faint); margin-bottom: 14px; }
footer.site-footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 9px; }
footer.site-footer a { text-decoration: none; color: var(--ink-soft); font-size: 14.5px; }
footer.site-footer a:hover { color: var(--ink); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 28px; border-top: 1px solid var(--rule);
  font-size: 13px; color: var(--ink-faint); flex-wrap: wrap; gap: 12px;
}

/* ===== Utility ===== */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.stack { display: flex; flex-direction: column; }
.row { display: flex; align-items: center; }
.gap-8 { gap: 8px; } .gap-12 { gap: 12px; } .gap-16 { gap: 16px; } .gap-24 { gap: 24px; }

/* ===== Reveal on scroll ===== */
[data-reveal] { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
[data-reveal].in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* Focus visible clavier */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2.5px solid var(--seal);
  outline-offset: 2px;
}