/* =========================================================
   AIA — feuille de style
   Structure et design repris du gabarit de référence,
   réécrits en CSS propre, sans dépendance à un éditeur visuel.
   ========================================================= */

/* ---------- 1. Jetons de design ---------- */
:root {
  /* Couleurs */
  --bg:            #f5f5f6;
  --dark:          #2d2d2f;
  --purple:        #341363;
  --accent:        #ecbc06;
  --accent-deep:   #cc9202;
  --accent-bright: #fdd612;
  --text:          #2d2d2f;
  --text-soft:     #4d4d51;
  --text-body:     #5b5b5f;
  --muted:         #85868b;
  --light:         #e6e6e7;
  --line:          #dededf;

  /* Typographie */
  --font-title: "Poppins", "Trebuchet MS", sans-serif;
  --font-body:  "Be Vietnam Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --fs-h1: 72px;
  --fs-h2: 60px;
  --fs-h3: 52px;
  --fs-lead: 20px;
  --fs-body: 18px;
  --fs-small: 16px;

  /* Mesures */
  --container: 1180px;
  --container-wide: 1300px;
  --gutter: 24px;
  --radius: 8px;
  --radius-lg: 16px;
  --header-h: 80px;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 2. Base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
img { height: auto; }
ul { list-style: none; margin: 0; padding: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--font-title);
  font-weight: 500;
  color: var(--text);
  margin: 0;
  letter-spacing: -0.01em;
}
h1 { font-size: var(--fs-h1); line-height: 1; }
h2 { font-size: var(--fs-h2); line-height: 1; }
h3 { font-size: var(--fs-h3); line-height: 1.1; }

/* Le mot mis en avant dans les titres */
h1 em, h2 em, h3 em { font-style: normal; color: var(--accent); }

p { margin: 0; }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  background: var(--dark);
  color: var(--bg);
  padding: 12px 20px;
  border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { left: 0; }

:focus-visible {
  outline: 2px solid var(--accent-deep);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 3. Blocs communs ---------- */
.eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-soft);
  line-height: 1.1;
  margin: 0;
}
.eyebrow-pill {
  display: inline-block;
  background: var(--dark);
  color: var(--light);
  padding: 8px 14px;
  border-radius: 999px;
}

.section-head { text-align: center; }
.section-head .eyebrow { margin-bottom: 24px; }
.section-head h2 { max-width: 900px; margin-inline: auto; }
.section-intro {
  max-width: 780px;
  margin: 34px auto 0;
  color: var(--text-body);
  line-height: 1.4;
}

/* ---------- 4. Boutons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 49px;
  padding: 0 24px;
  border: 0;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: transform .18s var(--ease), background-color .18s var(--ease),
              border-color .18s var(--ease), color .18s var(--ease), opacity .18s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn .ico-arrow {
  width: 22px;
  height: 22px;
  fill: currentColor;
  flex: none;
  transition: transform .18s var(--ease);
}
.btn:hover .ico-arrow { transform: translate(2px, -2px); }

.btn-solid   { background: var(--accent); color: var(--bg); }
.btn-solid:hover { background: var(--accent-bright); }

.btn-ghost   { background: transparent; color: var(--accent-deep); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--accent); background: rgba(236,188,6,.08); }

.btn-outline { background: transparent; color: var(--accent-deep); border: 1px solid var(--line); }
.btn-outline:hover { border-color: var(--accent); background: rgba(236,188,6,.08); }

.btn-sm { height: 38px; padding: 0 16px; font-size: 14px; }

/* Boutons pleins posés sur fond sombre : texte anthracite */
.cta-card .btn-solid,
.site-footer .btn-solid { color: var(--dark); }

/* ---------- 5. En-tête ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background-color .25s var(--ease), box-shadow .25s var(--ease),
              backdrop-filter .25s var(--ease);
}
.site-header.is-stuck {
  background: rgba(245,245,246,.88);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(0,0,0,.06);
}

.header-inner {
  max-width: var(--container-wide);
  margin-inline: auto;
  height: var(--header-h);
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  gap: 24px;
}

/* Logo « les deux marcheurs ».
   Tout le verrou est piloté par la seule taille de police de .brand :
   changer cette valeur redimensionne le symbole et le nom ensemble.
   Le trait arrière est en currentColor, il s'inverse donc de lui même
   sur un fond sombre. Le fichier assets/logo.svg reprend exactement le
   même dessin, avec le nom vectorisé. */
.brand {
  flex: none;
  display: flex;
  align-items: center;
  gap: 0.42em;
  font-size: 23px;
  color: var(--text);
}
.brand-mark {
  width: 1.18em;
  height: 1.18em;
  flex: none;
}
.brand-name {
  font-family: var(--font-title);
  font-size: 1em;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.015em;
  white-space: nowrap;
}
.brand-ia { color: var(--accent); }

.nav-desktop {
  display: flex;
  gap: 32px;
  margin-inline: auto;
}
.nav-desktop a {
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--muted);
  transition: color .18s var(--ease);
}
.nav-desktop a:hover,
.nav-desktop a.is-active { color: var(--accent-deep); }

.header-cta { flex: none; }

/* Bouton hamburger */
.burger {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  flex-direction: column;
  justify-content: space-between;
}
.burger span {
  display: block;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: transform .25s var(--ease), opacity .2s var(--ease);
}
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(10px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-10px) rotate(-45deg); }

/* Menu mobile */
.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 8px var(--gutter) 24px;
  background: rgba(245,245,246,.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 12px 24px rgba(0,0,0,.08);
}
.nav-mobile a {
  padding: 14px 4px;
  font-size: var(--fs-lead);
  font-weight: 500;
  border-bottom: 1px solid var(--line);
}
.nav-mobile .btn { margin-top: 16px; align-self: flex-start; border-bottom: 0; }
.nav-mobile.is-open { display: flex; }

/* ---------- 6. Hero ---------- */
.hero { padding-top: calc(var(--header-h) + 100px); padding-bottom: 40px; }

.hero-grid {
  display: grid;
  grid-template-columns: 580px 1fr;
  gap: 60px;
  align-items: center;
}
.hero h1 { max-width: 580px; }
.hero .lead {
  max-width: 560px;
  margin-top: 26px;
  font-size: var(--fs-lead);
  line-height: 1.35;
  color: var(--text-soft);
}
.hero .btn { margin-top: 30px; }
.hero-visual img { width: 100%; max-width: 620px; }

/* ---------- 7. Logos clients ---------- */
.brands { padding: 80px 0 74px; }
.brands-title {
  text-align: center;
  font-size: var(--fs-lead);
  color: #aeafb2;
  margin-bottom: 34px;
}

.marquee {
  position: relative;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track {
  display: flex;
  align-items: center;
  gap: 80px;
  width: max-content;
  animation: marquee 38s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track img {
  height: 44px;
  width: auto;
  flex: none;
  opacity: .85;
  filter: grayscale(1);
  transition: opacity .2s var(--ease), filter .2s var(--ease);
}
.marquee-track img:hover { opacity: 1; filter: grayscale(0); }

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(calc(-50% - 40px)); }
}

/* ---------- 8. Services ---------- */
.services { padding: 88px 0 0; }

.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 56px 0;
}
.feature-reverse .feature-copy { order: 2; }
.feature-reverse .feature-visual { order: 1; }

.feature-copy .eyebrow { margin-bottom: 24px; }
.feature-copy h3 { max-width: 560px; }
.feature-copy > p {
  max-width: 560px;
  margin-top: 22px;
  color: var(--text-body);
  line-height: 1.4;
}
.feature-copy .btn { margin-top: 30px; }

.feature-visual img { width: 100%; }

/* ---------- 9. Avantages (fond sombre) ---------- */
.advantages {
  background: var(--dark);
  padding: 88px 0 96px;
  margin-top: 44px;
}
.advantages .eyebrow { color: #cfcfd2; }
.advantages h2 { color: var(--bg); }

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 92px;
}
.advantage { text-align: center; }
.advantage-ico {
  width: 40px;
  height: 40px;
  margin: 0 auto 28px;
  fill: var(--bg);
}
.advantage-title {
  font-size: var(--fs-lead);
  font-weight: 600;
  color: var(--bg);
  margin-bottom: 16px;
}
.advantage-text {
  max-width: 337px;
  margin-inline: auto;
  color: var(--light);
  line-height: 1.4;
}

/* ---------- 10. Équipe ---------- */
.team { padding: 108px 0 100px; }

.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 360px);
  justify-content: center;
  gap: 258px;
  margin-top: 40px;
}
.member img {
  width: 360px;
  height: 360px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  background: var(--light);
}
.member-name {
  font-size: var(--fs-lead);
  font-weight: 600;
  color: var(--text-soft);
  margin-top: 30px;
}
.member-role {
  margin-top: 10px;
  color: var(--text-body);
  line-height: 1.4;
}
.member-link {
  display: inline-block;
  margin-top: 10px;
  color: var(--accent);
  transition: color .18s var(--ease), transform .18s var(--ease);
}
.member-link svg { width: 32px; height: 32px; fill: currentColor; }
.member-link:hover { color: var(--accent-deep); transform: translateY(-2px); }

/* ---------- 11. Appel à l'action ---------- */
.cta-launch { padding: 80px 0; }

.cta-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
  padding: 64px 80px;
  border-radius: var(--radius-lg);
  background: linear-gradient(199deg, var(--dark) 27%, var(--purple) 108%);
}
.cta-copy { max-width: 612px; }
.cta-card h3 { color: var(--bg); }
.cta-card p {
  margin-top: 22px;
  color: var(--light);
  line-height: 1.4;
}
.cta-card .btn { flex: none; align-self: flex-start; }

/* ---------- 12. FAQ ---------- */
.faq { padding: 88px 0 110px; }

.accordion {
  max-width: 980px;
  margin: 38px auto 0;
}
.acc-item {
  border-radius: 10px;
  border-bottom: 1px solid var(--line);
  transition: background-color .3s var(--ease);
}
.acc-item.is-open {
  background: var(--dark);
  border-bottom-color: transparent;
}

.acc-q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  padding: 24px 26px;
  background: transparent;
  border: 0;
  text-align: left;
  font-size: var(--fs-lead);
  font-weight: 500;
  line-height: 1.35;
  color: var(--text);
  cursor: pointer;
  transition: color .3s var(--ease);
}
.acc-item.is-open .acc-q { color: var(--bg); }

.acc-chevron {
  width: 24px;
  height: 24px;
  flex: none;
  margin-top: 2px;
  color: var(--dark);
  transition: transform .3s var(--ease), color .3s var(--ease);
}
.acc-item.is-open .acc-chevron {
  color: var(--accent-bright);
  transform: rotate(180deg);
}

.acc-a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .32s var(--ease);
}
.acc-item.is-open .acc-a { grid-template-rows: 1fr; }
.acc-a-inner { overflow: hidden; }
.acc-a p {
  padding: 0 26px 26px;
  color: var(--light);
  line-height: 1.4;
}

/* ---------- 13. Pied de page ---------- */
.site-footer {
  background: var(--dark);
  color: var(--light);
  padding: 60px 0 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 60px;
}
.footer-tagline {
  max-width: 300px;
  margin: 20px 0 24px;
  font-size: var(--fs-lead);
  line-height: 1.35;
  color: var(--muted);
}

.footer-nav { display: flex; flex-direction: column; }
.footer-nav a {
  font-family: var(--font-title);
  font-size: 38px;
  font-weight: 500;
  line-height: 1.3;
  color: var(--light);
  transition: color .18s var(--ease);
}
.footer-nav a:hover { color: var(--accent); }

.footer-social-title {
  font-size: var(--fs-body);
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 10px;
}
.footer-social a {
  display: inline-block;
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--muted);
  transition: color .18s var(--ease);
}
.footer-social a:hover { color: var(--light); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 40px;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,.08);
  font-size: 14px;
  color: var(--muted);
}
.footer-bottom a:hover { color: var(--light); }
.linklike {
  background: none;
  border: 0;
  padding: 0;
  font-size: 14px;
  color: var(--muted);
  cursor: pointer;
}
.linklike:hover { color: var(--light); }

/* ---------- 13 bis. Pages légales ---------- */
.legal { padding: calc(var(--header-h) + 72px) 0 96px; }
.legal .container { max-width: 760px; }
.legal h1 { font-size: var(--fs-h2); margin-bottom: 40px; }
.legal h2 {
  font-size: 24px;
  margin: 44px 0 14px;
  color: var(--text);
}
.legal p { color: var(--text-body); line-height: 1.6; }
.legal p + p { margin-top: 14px; }
.legal .legal-note {
  margin-top: 48px;
  padding: 18px 20px;
  border-left: 3px solid var(--accent);
  background: rgba(236, 188, 6, .08);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: var(--fs-small);
  color: var(--text-soft);
}
.legal .btn { margin-top: 40px; }

/* ---------- 14. Bandeau cookies ---------- */
.cookie-banner {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 200;
  width: min(360px, calc(100vw - 40px));
  padding: 20px;
  background: var(--dark);
  border: 1px solid rgba(245,245,246,.25);
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 40px rgba(0,0,0,.25);
}
.cookie-title {
  font-family: var(--font-title);
  font-size: var(--fs-small);
  color: var(--bg);
  margin-bottom: 10px;
}
.cookie-desc { font-size: 14px; line-height: 1.5; color: var(--light); }
.cookie-desc a { color: var(--muted); text-decoration: underline; }
.cookie-actions { display: flex; gap: 10px; margin-top: 16px; }
.cookie-actions .btn-outline { color: var(--light); border-color: rgba(245,245,246,.35); }

/* ---------- 15. Animations d'apparition ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }
.reveal-delay   { transition-delay: .12s; }
.reveal-delay-2 { transition-delay: .24s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee-track { animation: none; }
  .btn:hover { transform: none; }
  * { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* =========================================================
   16. Adaptations aux petits écrans
   ========================================================= */

@media (max-width: 1120px) {
  :root { --fs-h1: 58px; --fs-h2: 48px; --fs-h3: 42px; }
  .hero-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .team-grid { gap: 80px; }
  .cta-card { padding: 52px 56px; }
}

@media (max-width: 900px) {
  .nav-desktop, .header-cta { display: none; }
  .burger { display: flex; }
  .site-header { background: rgba(245,245,246,.9); backdrop-filter: blur(12px); }

  .hero { padding-top: calc(var(--header-h) + 56px); }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; }
  .hero-visual img { margin-inline: auto; max-width: 460px; }

  .feature,
  .feature-reverse {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 0;
  }
  .feature-reverse .feature-copy,
  .feature-reverse .feature-visual { order: initial; }

  .advantage-grid { grid-template-columns: 1fr; gap: 48px; margin-top: 56px; }

  .team-grid { grid-template-columns: 1fr; justify-items: center; gap: 56px; }

  .cta-card { flex-direction: column; align-items: flex-start; gap: 32px; }

  .footer-grid { grid-template-columns: 1fr; gap: 48px; }
  .footer-nav a { font-size: 30px; }
}

@media (max-width: 560px) {
  :root {
    --fs-h1: 42px;
    --fs-h2: 34px;
    --fs-h3: 30px;
    --fs-lead: 18px;
    --fs-body: 16px;
    --gutter: 20px;
  }

  .brand { font-size: 18px; }

  .hero .lead { margin-top: 20px; }
  .brands { padding: 56px 0; }
  .marquee-track { gap: 48px; }
  .marquee-track img { height: 34px; }

  .services { padding-top: 56px; }
  .section-intro { margin-top: 24px; }
  .advantages { padding: 64px 0 72px; }
  .team { padding: 72px 0 64px; }

  .member img { width: 100%; height: auto; aspect-ratio: 1; }

  .cta-launch { padding: 56px 0; }
  .cta-card { padding: 36px 26px; }

  .faq { padding: 64px 0 80px; }
  .acc-q { padding: 20px 18px; font-size: 17px; }
  .acc-a p { padding: 0 18px 20px; }

  .btn { width: 100%; justify-content: center; }
  .btn-sm { width: auto; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 12px; }
}