/* SKIA, feuille de style du site. Les couleurs viennent de la charte (marque/charte-graphique.html). */
:root {
  --nuit: #050B1F;
  --abysse: #071233;
  --marine: #0A1A3F;
  --cobalt: #1E5BFF;
  --azur: #5B8CFF;
  --cyan: #18D4F0;
  --glace: #EAF2FF;
  --brume: #9FB2D9;
  --trait: rgba(91, 140, 255, .18);
  --degrade: linear-gradient(120deg, var(--cobalt), var(--cyan));
  --titre: "Space Grotesk", "Inter", system-ui, sans-serif;
  --texte: "Inter", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --rayon: 18px;
  --large: 1160px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0;
  background: var(--nuit);
  color: var(--glace);
  font: 400 17px/1.65 var(--texte);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(900px 600px at 85% -10%, rgba(30, 91, 255, .35), transparent 60%),
    radial-gradient(700px 500px at -10% 40%, rgba(24, 212, 240, .14), transparent 60%),
    linear-gradient(var(--trait) 1px, transparent 1px) 0 0 / 56px 56px,
    linear-gradient(90deg, var(--trait) 1px, transparent 1px) 0 0 / 56px 56px;
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0,0,0,.35) 70%, rgba(0,0,0,.2) 100%);
}
#reseau { position: fixed; inset: 0; z-index: -1; width: 100%; height: 100%; opacity: .55; pointer-events: none; }
#foule { position: fixed; inset: 0; z-index: 5; width: 100%; height: 100%; pointer-events: none; } /* au-dessus du contenu pour rester visible, sous la nav, sans capter les clics */

img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--titre); line-height: 1.08; margin: 0; letter-spacing: -.02em; }
h2 { font-size: clamp(30px, 4.4vw, 50px); max-width: 18ch; margin-bottom: 48px; }
h3 { font-size: 21px; margin-bottom: 10px; }
p { margin: 0 0 16px; }

.degrade { background: var(--degrade); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* Navigation */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px max(16px, calc((100vw - var(--large)) / 2));
  background: rgba(5, 11, 31, .62);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--trait);
}
.nav__logo { display: flex; align-items: center; gap: 14px; text-decoration: none; }
.nav__logo img { height: 32px; width: auto; }
.nav__sigle { padding-left: 14px; border-left: 1px solid var(--trait); font: 400 10px/1.45 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: rgba(159, 178, 217, .6); }
.nav__sigle b { font-weight: 500; color: var(--cyan); }
.nav__liens { display: flex; align-items: center; gap: 28px; font-size: 15px; }
.nav__liens a:not(.btn) { text-decoration: none; color: var(--brume); transition: color .2s; }
.nav__liens a:not(.btn):hover { color: var(--glace); }

/* Boutons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 26px; border-radius: 999px; border: 0; cursor: pointer;
  font: 600 16px/1 var(--texte); text-decoration: none; color: #fff;
  background: var(--degrade);
  box-shadow: 0 10px 40px -10px rgba(30, 91, 255, .8), inset 0 1px 0 rgba(255,255,255,.25);
  transition: transform .2s, box-shadow .2s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 16px 50px -10px rgba(24, 212, 240, .7); }
.btn--petit { padding: 10px 18px; font-size: 14px; }
.btn--fantome { background: transparent; box-shadow: inset 0 0 0 1px rgba(159, 178, 217, .4); color: var(--glace); }
.btn--fantome:hover { box-shadow: inset 0 0 0 1px var(--cyan); }
.btn--plein { width: 100%; padding: 16px; }

/* Sections */
main { max-width: var(--large); margin: 0 auto; padding: 0 16px; }
.section { padding: 110px 0; border-top: 1px solid var(--trait); }
.surtitre { font: 500 13px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--cyan); margin-bottom: 18px; }

/* Héros */
.hero { min-height: 100svh; display: flex; flex-direction: column; justify-content: center; padding: 130px 0 80px; }
.etiquette {
  display: inline-flex; align-items: center; gap: 10px; align-self: flex-start;
  padding: 7px 14px; border: 1px solid var(--trait); border-radius: 999px;
  font: 500 13px/1 var(--mono); color: var(--brume); background: rgba(10, 26, 63, .5); margin-bottom: 30px;
}
.pastille { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); animation: pouls 2s infinite; }
@keyframes pouls { 50% { opacity: .35; } }
.hero h1 { font-size: clamp(48px, 9vw, 112px); font-weight: 700; max-width: 12ch; }
.hero__texte { font-size: clamp(18px, 2vw, 21px); color: var(--brume); max-width: 40em; margin: 28px 0 38px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero__code {
  margin-top: 64px; align-self: flex-start; max-width: 100%;
  padding: 20px 24px; border-radius: 14px; border: 1px solid var(--trait);
  background: rgba(7, 18, 51, .75); font: 400 14px/1.9 var(--mono); color: var(--glace);
  box-shadow: 0 30px 80px -30px rgba(30, 91, 255, .5); overflow-x: auto; white-space: nowrap;
}
.c-gris { color: #5E6F96; } .c-cyan { color: var(--cyan); } .c-vert { color: #3BE3A5; }
.curseur { animation: pouls 1s steps(1) infinite; color: var(--cyan); }

/* Cartes services */
.grille { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.carte {
  position: relative; padding: 34px; border-radius: var(--rayon);
  background: linear-gradient(160deg, rgba(10, 26, 63, .85), rgba(7, 18, 51, .55));
  border: 1px solid var(--trait); overflow: hidden; transition: border-color .3s, transform .3s;
}
.carte::after {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px;
  background: var(--degrade); opacity: 0; transition: opacity .3s;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude;
}
.carte:hover { transform: translateY(-4px); }
.carte:hover::after { opacity: 1; }
.carte p { color: var(--brume); margin: 0; }
.carte__icone {
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 24px;
  background: rgba(30, 91, 255, .14); border: 1px solid rgba(91, 140, 255, .3);
}
.carte__icone svg, .lien-linkedin svg { width: 24px; height: 24px; fill: none; stroke: var(--cyan); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }

/* Étapes */
.etapes { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: e; }
.etapes li { padding: 28px 0 0; border-top: 2px solid var(--marine); position: relative; }
.etapes li::before { content: ""; position: absolute; top: -2px; left: 0; width: 40%; height: 2px; background: var(--degrade); }
.etapes__num { font: 500 14px var(--mono); color: var(--cyan); display: block; margin-bottom: 16px; }
.etapes p { color: var(--brume); font-size: 16px; }

/* À propos */
.apropos { display: grid; grid-template-columns: 5fr 7fr; gap: 64px; align-items: center; }
.apropos__photo {
  position: relative; aspect-ratio: 6 / 7; border-radius: 24px; overflow: hidden; width: 100%; max-width: 320px; justify-self: center;
  background: radial-gradient(circle at 30% 20%, var(--cobalt), var(--abysse) 70%);
  border: 1px solid var(--trait); box-shadow: 0 40px 100px -40px rgba(30, 91, 255, .7);
}
.apropos__photo img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.9) contrast(1.05); }
.apropos__photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(5, 11, 31, .55), transparent 45%); }
.apropos__initiales { display: none; position: absolute; inset: 0; place-items: center; font: 700 110px var(--titre); color: rgba(234, 242, 255, .9); }
.sans-photo img { display: none; }
.sans-photo .apropos__initiales { display: grid; }
.apropos h2 { margin-bottom: 6px; }
.apropos__role { font: 500 14px var(--mono); color: var(--cyan); margin-bottom: 26px; }
.apropos__texte > p:not(.surtitre):not(.apropos__role) { color: var(--brume); }
.puces { list-style: none; padding: 0; margin: 24px 0 30px; display: grid; gap: 10px; }
.puces li { padding-left: 26px; position: relative; }
.puces li::before { content: ""; position: absolute; left: 0; top: .6em; width: 12px; height: 2px; background: var(--degrade); }
.lien-linkedin { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; text-decoration: none; padding-bottom: 3px; border-bottom: 1px solid var(--trait); transition: border-color .2s; }
.lien-linkedin svg { fill: var(--cyan); stroke: none; width: 20px; height: 20px; }
.lien-linkedin:hover { border-color: var(--cyan); }

/* Contact */
.manifeste { margin: 48px 0 0; max-width: 46ch; font: 600 clamp(22px, 2.6vw, 30px)/1.3 var(--titre); letter-spacing: -.01em; }
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.contact__intro p { color: var(--brume); margin-bottom: 30px; }
.canaux { display: grid; gap: 16px; align-content: center; }
.canal { display: flex; align-items: center; gap: 18px; padding: 24px 28px; border-radius: 22px; background: rgba(7, 18, 51, .8); border: 1px solid var(--trait); color: var(--glace); text-decoration: none; transition: border-color .2s, transform .2s; min-width: 0; }
.canal:hover { border-color: var(--cyan); transform: translateY(-2px); }
.canal svg { flex: none; width: 34px; height: 34px; fill: var(--cyan); }
.canal span { display: grid; gap: 4px; min-width: 0; }
.canal small { font-size: 13px; color: var(--brume); }
.canal b { font: 600 clamp(16px, 2vw, 20px) var(--titre); overflow-wrap: anywhere; }

/* Pied */
.pied { text-align: center; padding: 60px 16px 50px; border-top: 1px solid var(--trait); color: var(--brume); font-size: 14px; }
.pied img { margin: 0 auto 18px; height: 26px; width: auto; }
.pied p { margin: 0 0 4px; }
.pied__petit { font-size: 12px; color: #5E6F96; }
.pied__sigle { font: 400 11px var(--mono, ui-monospace, Menlo, monospace); letter-spacing: .12em; text-transform: uppercase; color: #3E4F78; margin: 10px 0 8px !important; }
.pied__sigle b { color: #6F86C4; font-weight: 600; }

/* Apparition au défilement */
.revele { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.revele.vu { opacity: 1; transform: none; }
.etapes li:nth-child(2), .grille .carte:nth-child(2) { transition-delay: .08s; }
.etapes li:nth-child(3), .grille .carte:nth-child(3) { transition-delay: .16s; }
.etapes li:nth-child(4), .grille .carte:nth-child(4) { transition-delay: .24s; }

@media (max-width: 900px) {
  .etapes { grid-template-columns: repeat(2, 1fr); }
  .apropos, .contact { grid-template-columns: 1fr; gap: 40px; }
  .apropos__photo { max-width: 260px; justify-self: start; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .nav__liens a:not(.btn) { display: none; }
  .nav__logo { gap: 10px; }
  .nav__sigle { padding-left: 10px; font-size: 7.5px; letter-spacing: .02em; white-space: nowrap; }
  .nav .btn--petit { padding: 10px 14px; white-space: nowrap; }
  .grille, .etapes { grid-template-columns: 1fr; }
  .section { padding: 80px 0; }
  .carte, .canal { padding: 24px; }
  .hero__code { font-size: 12px; line-height: 1.7; padding: 16px; white-space: normal; }
  h2 { margin-bottom: 32px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .revele { opacity: 1; transform: none; }
  #reseau, #foule { display: none; }
}

/* Pages de services et FAQ */
.hero--page { min-height: auto; padding: 150px 0 40px; }
.hero--page h1 { font-size: clamp(40px, 6.4vw, 76px); max-width: 16ch; }
.fil { font: 400 13px/1.4 var(--mono); color: var(--brume); margin: 0 0 26px; }
.fil a { text-decoration: none; border-bottom: 1px solid var(--trait); }
.fil a:hover { border-color: var(--cyan); }
.carte__lien { display: inline-block; margin-top: 20px; font: 500 14px var(--mono); color: var(--cyan); text-decoration: none; }
.carte__lien::before { content: ""; position: absolute; inset: 0; z-index: 1; }
.carte__lien:hover { text-decoration: underline; }
.liste-obtenu { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 40px; max-width: 980px; margin: 0; }
.faq { display: grid; gap: 12px; max-width: 860px; }
.faq details { border: 1px solid var(--trait); border-radius: 14px; background: rgba(7, 18, 51, .7); transition: border-color .2s; }
.faq details[open] { border-color: rgba(24, 212, 240, .45); }
.faq summary { cursor: pointer; list-style: none; padding: 20px 56px 20px 24px; position: relative; font: 600 18px/1.35 var(--titre); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 24px; top: 50%; transform: translateY(-50%); font: 400 24px var(--mono); color: var(--cyan); transition: transform .2s; }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { margin: 0; padding: 0 24px 22px; color: var(--brume); }
.autres { display: flex; flex-wrap: wrap; gap: 12px; }
.autres a { padding: 12px 18px; border: 1px solid var(--trait); border-radius: 999px; text-decoration: none; font-size: 15px; transition: border-color .2s; }
.autres a:hover { border-color: var(--cyan); }
@media (max-width: 640px) {
  .hero--page { padding: 120px 0 20px; }
  .liste-obtenu { grid-template-columns: 1fr; }
  .faq summary { font-size: 16px; padding: 18px 48px 18px 18px; }
  .faq summary::after { right: 18px; }
  .faq details p { padding: 0 18px 18px; }
}