/* ═════════════════════════════════════════════════════════════════════════
FICHIER : landing/public/styles.css
═════════════════════════════════════════════════════════════════════════
RÔLE :
  Feuille de style de la page vitrine DEGGO (index.html). Design SaaS
  professionnel : hero avec maquette SVG, cartes, sections contrastées,
  révélations animées au défilement (déclenchées par app.js), respect de
  prefers-reduced-motion, contrastes AA, responsive, aucune dépendance
  externe (polices système).

CONTENU :
  - jetons de design (couleurs, mesures, ombres)
  - en-tête collant, hero + maquette, bandeau de chiffres, grille de
    cartes, tiers de systèmes, conformité + chips de pays, section sombre
    principes, CTA, pied de page
  - animations .reveal (opacité/translation) et flottement de la maquette

UTILISÉ PAR : landing/public/index.html (servi par Cloudflare Workers
  Static Assets) ; les classes .reveal sont activées par app.js.

⚠ MAINTENANCE : garder les contrastes ≥ 4,5:1 ; toute animation doit être
  neutralisée sous prefers-reduced-motion ; pas de framework CSS ;
  mettre à jour cet en-tête à chaque modification.
═════════════════════════════════════════════════════════════════════════ */

:root {
  --ink: #17211d;
  --ink-soft: #42534c;
  --bg: #f7f5ef;
  --bg-soft: #efecdf;
  --card: #ffffff;
  --accent: #0b3d2e;
  --accent-mid: #12503c;
  --gold: #b98a2f;
  --line: #ddd7c6;
  --measure: 72rem;
  --radius: 14px;
  --shadow: 0 18px 50px -24px rgba(11, 61, 46, .28);
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --serif: ui-serif, Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--serif); }

.container { max-width: var(--measure); margin: 0 auto; padding: 0 1.5rem; }

.skip {
  position: absolute; inset-inline-start: -9999px; top: 0; z-index: 20;
  background: var(--accent); color: #fff; padding: .6rem 1rem;
}
.skip:focus { inset-inline-start: 0; }

a { color: var(--accent); }
a:focus-visible, .button:focus-visible {
  outline: 3px solid var(--gold); outline-offset: 2px; border-radius: 4px;
}

/* ── En-tête ─────────────────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(247, 245, 239, .88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s, box-shadow .25s;
}
.site-header.scrolled { border-bottom-color: var(--line); box-shadow: 0 6px 24px -18px rgba(11,61,46,.35); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.5rem; }
.wordmark {
  font-family: var(--serif); font-weight: 700; letter-spacing: .35em;
  font-size: 1.3rem; color: var(--accent); text-decoration: none; margin: 0;
}
nav { display: flex; align-items: center; gap: 1.8rem; }
nav a {
  color: var(--ink-soft); text-decoration: none; font-size: .95rem; font-weight: 500;
}
nav a:hover { color: var(--accent); }
.nav-cta {
  background: var(--accent); color: #fff !important;
  padding: .55rem 1.15rem; border-radius: 999px;
}
.nav-cta:hover { background: var(--accent-mid); }

/* Sélecteur de langue */
.lang-menu { position: relative; }
.lang-menu summary {
  list-style: none; cursor: pointer; user-select: none;
  color: var(--ink-soft); font-size: .9rem; font-weight: 600;
  padding: .4rem .7rem; border: 1px solid var(--line); border-radius: 8px;
  background: var(--card);
}
.lang-menu summary::-webkit-details-marker { display: none; }
.lang-menu summary::after { content: "▾"; margin-inline-start: .35rem; font-size: .75rem; }
.lang-menu[open] summary { border-color: var(--accent); color: var(--accent); }
.lang-menu summary:hover { color: var(--accent); }
.lang-menu summary:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }
.lang-list {
  position: absolute; inset-inline-end: 0; top: calc(100% + .4rem); z-index: 30;
  min-width: 9.5rem;
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  box-shadow: var(--shadow); padding: .4rem; display: grid; gap: .1rem;
}
.lang-list a {
  display: block; padding: .5rem .75rem; border-radius: 7px;
  color: var(--ink); text-decoration: none; font-size: .92rem;
}
.lang-list a:hover { background: rgba(11,61,46,.07); color: var(--accent); }
.lang-list a[aria-current="true"] { font-weight: 700; color: var(--accent); }
.lang-list a[aria-current="true"]::before { content: "✓ "; }

/* ── Hero ────────────────────────────────────────────────────────────── */
.hero {
  position: relative; overflow: hidden;
  padding: 5rem 0 4.5rem;
  background:
    radial-gradient(60rem 30rem at 85% -10%, rgba(185,138,47,.10), transparent 60%),
    radial-gradient(50rem 26rem at -10% 20%, rgba(11,61,46,.07), transparent 55%);
}
/* fines lignes de registre en fond */
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: repeating-linear-gradient(
    to bottom, transparent 0 39px, rgba(11,61,46,.045) 39px 40px);
}
.hero-grid {
  position: relative;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 3.5rem; align-items: center;
}
.eyebrow {
  font-family: var(--sans); font-size: .8rem; font-weight: 700;
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--gold); margin: 0 0 1rem;
}
.eyebrow-light { color: #d9b96a; }
.hero h1 {
  font-size: clamp(2.3rem, 4.6vw, 3.6rem); line-height: 1.12;
  margin: 0 0 1.4rem; letter-spacing: -.01em;
}
.lede { font-size: 1.16rem; color: var(--ink-soft); max-width: 34rem; margin: 0 0 2.1rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .9rem; }
.hero-note { margin: 1.4rem 0 0; font-size: .9rem; color: var(--ink-soft); opacity: .85; }

.button {
  display: inline-block; text-decoration: none; font-weight: 600;
  font-size: 1rem; padding: .9rem 1.7rem; border-radius: 10px;
  transition: transform .18s, box-shadow .18s, background .18s;
}
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--accent); color: #fff; box-shadow: var(--shadow); }
.button-primary:hover { background: var(--accent-mid); }
.button-ghost { border: 1.5px solid var(--accent); color: var(--accent); background: transparent; }
.button-ghost:hover { background: rgba(11,61,46,.06); }
.button-lg { font-size: 1.15rem; padding: 1.05rem 2.4rem; }

/* maquette */
.hero-visual { position: relative; }
.mockup {
  width: 100%; height: auto; display: block;
  filter: drop-shadow(0 30px 60px rgba(11,61,46,.30));
}
.float-a, .float-b { animation: float 7s ease-in-out infinite; }
.float-b { animation-delay: -3.5s; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-7px); } }

/* ── Chiffres clés ───────────────────────────────────────────────────── */
.stats { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-soft); }
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  padding: 2.2rem 1.5rem; gap: 1.5rem;
}
.stat { text-align: center; }
.stat-num {
  display: block; font-family: var(--serif); font-weight: 700;
  font-size: 2.6rem; color: var(--accent); line-height: 1.1;
}
.stat-label { font-size: .86rem; color: var(--ink-soft); }

/* ── Sections génériques ─────────────────────────────────────────────── */
.section { padding: 5.5rem 0; }
.section-alt { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 44rem; margin-bottom: 3rem; }
.section-head h2 { font-size: clamp(1.8rem, 3.4vw, 2.5rem); line-height: 1.2; margin: 0 0 .9rem; }
.section-lede { color: var(--ink-soft); font-size: 1.08rem; margin: 0; }

/* ── Cartes produit ──────────────────────────────────────────────────── */
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
}
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.9rem 1.7rem;
  transition: transform .22s, box-shadow .22s, border-color .22s;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: #c9c2ad; }
.card-icon {
  width: 46px; height: 46px; border-radius: 12px;
  display: grid; place-items: center;
  background: rgba(11,61,46,.08); color: var(--accent); margin-bottom: 1.1rem;
}
.card-icon svg { width: 24px; height: 24px; }
.card h3 { margin: 0 0 .6rem; font-size: 1.18rem; }
.card p { margin: 0; color: var(--ink-soft); font-size: .97rem; }

/* ── Systèmes ────────────────────────────────────────────────────────── */
.grid { display: grid; gap: 1.5rem; grid-template-columns: repeat(3, 1fr); }
.tier {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 2rem 1.8rem; position: relative;
  transition: transform .22s, box-shadow .22s;
}
.tier:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.tier-mid { border-color: var(--accent); border-width: 1.5px; }
.tier-tag {
  display: inline-block; font-family: var(--sans); font-weight: 700; font-size: .78rem;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--accent); background: rgba(11,61,46,.08);
  padding: .3rem .8rem; border-radius: 999px; margin: 0 0 1.1rem;
}
.tier h3 { margin: 0 0 .7rem; font-size: 1.25rem; }
.tier p { margin: 0; color: var(--ink-soft); font-size: .97rem; }
.tiers-note { margin: 2.2rem auto 0; max-width: 40rem; text-align: center; color: var(--ink-soft); font-size: .95rem; }

/* ── Conformité ──────────────────────────────────────────────────────── */
.conformite-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 4rem; align-items: start; }
.conformite-copy h2 { font-size: clamp(1.8rem, 3.2vw, 2.3rem); margin: 0 0 1.1rem; }
.conformite-copy > p { color: var(--ink-soft); }
.check-list { list-style: none; margin: 1.6rem 0 0; padding: 0; display: grid; gap: .8rem; }
.check-list li { position: relative; padding-inline-start: 1.9rem; color: var(--ink); }
.check-list li::before {
  content: ""; position: absolute; inset-inline-start: 0; top: .3rem;
  width: 1.1rem; height: 1.1rem;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Ccircle cx='12' cy='12' r='11' fill='%230b3d2e'/%3E%3Cpath d='M7.5 12.5l3 3 6-7' fill='none' stroke='white' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat;
}
.conformite-side h3 { margin: 0 0 1.3rem; font-size: 1.25rem; }
.country-chips {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: .55rem;
}
.country-chips li {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 999px; padding: .38rem .9rem;
  font-size: .86rem; color: var(--ink-soft);
  transition: border-color .18s, color .18s;
}
.country-chips li:hover { border-color: var(--accent); color: var(--accent); }

/* ── Section sombre — principes ──────────────────────────────────────── */
.section-dark { background: var(--accent); color: #eef2ec; }
.section-dark h2 { color: #fff; }
.principles-list {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.4rem;
}
.principles-list li {
  border: 1px solid rgba(255,255,255,.16); border-radius: var(--radius);
  padding: 1.7rem 1.6rem; background: rgba(255,255,255,.05);
  color: rgba(238,242,236,.82);
}
.principles-list strong { display: block; color: #fff; font-family: var(--serif); font-size: 1.15rem; margin-bottom: .5rem; }

/* ── CTA ─────────────────────────────────────────────────────────────── */
.cta-section { text-align: center; }
.cta-inner { max-width: 40rem; }
.cta-section h2 { font-size: clamp(1.9rem, 3.6vw, 2.6rem); margin: 0 0 1rem; }
.cta-lede { color: var(--ink-soft); font-size: 1.08rem; margin: 0 0 2rem; }
.cta-section .hero-actions { justify-content: center; }

/* ── Pied de page ────────────────────────────────────────────────────── */
.site-footer { border-top: 1px solid var(--line); background: var(--bg-soft); }
.footer-inner {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2rem;
  padding: 3rem 1.5rem 2rem;
}
.wordmark-footer { font-size: 1.15rem; margin-bottom: .4rem; }
.footer-tag { color: var(--ink-soft); font-size: .92rem; margin: 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1.6rem; align-items: center; }
.footer-links a { color: var(--ink-soft); text-decoration: none; font-size: .92rem; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--line); padding: 1.2rem 1.5rem 2rem; }
.footer-bottom p { margin: 0; font-size: .85rem; color: var(--ink-soft); }

/* ── Révélations au défilement ───────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.visible { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; } .reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; } .reveal.d4 { transition-delay: .32s; }

/* ── Responsive ──────────────────────────────────────────────────────── */
@media (max-width: 60rem) {
  .hero-grid { grid-template-columns: 1fr; gap: 3rem; }
  .hero-visual { max-width: 36rem; }
  .features-grid, .grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .conformite-grid { grid-template-columns: 1fr; gap: 3rem; }
  .principles-list { grid-template-columns: 1fr; }
}
@media (max-width: 40rem) {
  .features-grid, .grid, .stats-grid { grid-template-columns: 1fr; }
  nav a:not(.nav-cta) { display: none; }
  .section { padding: 4rem 0; }
  .hero { padding: 3.5rem 0; }
}

/* ── RTL (arabe) ─────────────────────────────────────────────────────── */
html[dir="rtl"] body { letter-spacing: 0; }
html[dir="rtl"] h1,
html[dir="rtl"] h2,
html[dir="rtl"] h3,
html[dir="rtl"] .stat-num,
html[dir="rtl"] .wordmark { font-family: var(--sans); }
html[dir="rtl"] .wordmark { letter-spacing: .28em; }
html[dir="rtl"] .principles-list li { border-left-width: 1px; }

/* ── Mouvement réduit ────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}