/* Cloud Center | feuille de style unique
   Palette a roles : fond profond, fond secondaire, section claire, accent bleu.
   Corps a 17 px, colonne de lecture a 720 px, interligne 1,7. */

:root {
  --fond: #060d1c;
  --fond-2: #0a1529;
  --fond-3: #0e1c35;
  --fond-clair: #eef3fa;
  --texte: #e9eff8;
  --texte-doux: #9cb0cc;
  --texte-sombre: #16233c;
  --accent: #4da8ff;
  --accent-vif: #7cc6ff;
  --bordure: rgba(255, 255, 255, 0.10);
  --bordure-claire: rgba(20, 40, 70, 0.14);
  --rayon: 10px;
  --colonne: 720px;
  --contenu: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--fond);
  color: var(--texte);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--accent); }

.conteneur { width: 100%; max-width: var(--contenu); margin: 0 auto; padding: 0 24px; }

/* ------------------------------------------------------------- en-tete */

.entete {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(6, 13, 28, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--bordure);
}

.entete .conteneur {
  display: flex;
  align-items: center;
  gap: 32px;
  min-height: 64px;
}

.logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  flex: none;
}

.logo img { height: 30px; width: auto; }

.pied .logo { margin-bottom: 18px; }
.pied .logo img { height: 34px; }

.navigation { display: flex; gap: 26px; flex-wrap: wrap; }

.navigation a {
  color: var(--texte-doux);
  text-decoration: none;
  font-size: 15px;
}

.navigation a:hover { color: var(--texte); }

/* --------------------------------------------------------------- hero */

.hero {
  position: relative;
  padding: 88px 0 72px;
  overflow: hidden;
  border-bottom: 1px solid var(--bordure);
}

.hero-image {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: right center;
  opacity: 0.85;
}

.hero-voile {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(100deg, var(--fond) 8%, rgba(6, 13, 28, 0.88) 38%, rgba(6, 13, 28, 0.25) 72%);
}

.hero .conteneur { position: relative; z-index: 2; }

.hero-texte { max-width: 620px; }

.surtitre {
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 20px;
}

h1 {
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  font-weight: 700;
}

h1 .accent { color: var(--accent-vif); display: block; }

.chapo { font-size: 19px; color: var(--texte-doux); margin: 0 0 32px; max-width: 46ch; }

.boutons { display: flex; gap: 14px; flex-wrap: wrap; }

.bouton,
.bouton-fantome {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 24px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
}

.bouton { background: #fff; color: var(--texte-sombre); }
.bouton:hover { background: var(--accent-vif); }

.bouton-fantome { border-color: rgba(255, 255, 255, 0.34); color: var(--texte); }
.bouton-fantome:hover { border-color: var(--accent); color: var(--accent-vif); }

/* ------------------------------------------------------------ rubans */

.ruban {
  border-bottom: 1px solid var(--bordure);
  background: var(--fond-2);
}

.ruban .conteneur {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  padding-top: 18px;
  padding-bottom: 18px;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.ruban a { color: var(--texte-doux); text-decoration: none; }
.ruban a:hover { color: var(--accent-vif); }
.ruban .point { color: var(--accent); }

/* ----------------------------------------------------------- sections */

.section { padding: 88px 0; border-bottom: 1px solid var(--bordure); }

.section-claire {
  background: var(--fond-clair);
  color: var(--texte-sombre);
  border-bottom-color: var(--bordure-claire);
}

.section-claire .surtitre { color: #2f6fb5; }
.section-claire .intro-texte { color: #46587a; }

.etiquette {
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 18px;
}

h2 {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  margin: 0 0 18px;
  font-weight: 700;
}

h2 .accent { color: var(--accent-vif); display: block; }
.section-claire h2 .accent { color: #1a76d2; }

.entete-section {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 40px;
  align-items: end;
  margin-bottom: 48px;
}

.intro-texte { color: var(--texte-doux); margin: 0; }

/* ------------------------------------------------------------- cartes */

.grille-cartes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.carte {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--bordure);
  border-radius: var(--rayon);
  overflow: hidden;
  background: var(--fond-2);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.carte:hover { border-color: var(--accent); transform: translateY(-3px); }

.carte-visuel { aspect-ratio: 4 / 3; overflow: hidden; }
.carte-visuel img { width: 100%; height: 100%; object-fit: cover; }

.carte-corps { padding: 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }

.badge {
  align-self: flex-start;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-vif);
  border: 1px solid rgba(77, 168, 255, 0.4);
  border-radius: 4px;
  padding: 3px 8px;
}

.carte h3 { font-size: 21px; line-height: 1.25; margin: 4px 0 0; font-weight: 700; }
.carte p { color: var(--texte-doux); font-size: 15px; margin: 0; flex: 1; }

.carte-pied {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--texte-doux);
  border-top: 1px solid var(--bordure);
  padding-top: 14px;
  margin-top: 6px;
}

.fleche { color: var(--accent-vif); font-size: 18px; }

/* ------------------------------------------------------------ colonnes */

.deux-colonnes {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 56px;
  align-items: center;
}

.liste-liens { list-style: none; margin: 26px 0 0; padding: 0; display: grid; gap: 14px; }

.liste-liens a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-decoration: none;
  color: inherit;
  border-bottom: 1px solid var(--bordure-claire);
  padding-bottom: 12px;
  font-weight: 500;
}

.section-claire .liste-liens a:hover { color: #1a76d2; }

.section:not(.section-claire) .liste-liens a { border-bottom-color: var(--bordure); }
.section:not(.section-claire) .liste-liens a:hover { color: var(--accent-vif); }

.liste-atouts { list-style: none; margin: 0; padding: 0; display: grid; gap: 26px; }

.atout { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 18px; align-items: start; }

.atout-icone {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--bordure);
  display: grid;
  place-items: center;
  color: var(--accent-vif);
  background: var(--fond-3);
}

.atout h3 { margin: 0 0 4px; font-size: 18px; }
.atout p { margin: 0; color: var(--texte-doux); font-size: 15px; }
.atout a { text-decoration: none; }
.atout a:hover { text-decoration: underline; }

/* ---------------------------------------------------------- glossaire */

.bloc-glossaire {
  border: 1px solid var(--bordure);
  border-radius: var(--rayon);
  background: var(--fond-2);
  padding: 26px;
}

.champ-recherche {
  width: 100%;
  min-height: 46px;
  padding: 0 16px;
  margin-bottom: 20px;
  border-radius: 8px;
  border: 1px solid var(--bordure);
  background: var(--fond-3);
  color: var(--texte);
  font: inherit;
  font-size: 15px;
}

.champ-recherche::placeholder { color: #6d829f; }

.definition {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 20px;
  padding: 16px 0;
  border-top: 1px solid var(--bordure);
}

.definition:first-of-type { border-top: 0; }
.definition dt { font-weight: 600; }
.definition dd { margin: 0; color: var(--texte-doux); font-size: 15px; }

.aucun-resultat { color: var(--texte-doux); padding: 16px 0; }

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

.section-finale {
  position: relative;
  padding: 96px 0;
  overflow: hidden;
  border-bottom: 1px solid var(--bordure);
}

.section-finale .hero-voile {
  background: linear-gradient(90deg, var(--fond) 10%, rgba(6, 13, 28, 0.82) 50%, rgba(6, 13, 28, 0.4) 100%);
}

.section-finale .conteneur { position: relative; z-index: 2; }

/* ------------------------------------------------------------ article */

.fil { font-size: 13px; color: var(--texte-doux); padding: 22px 0 0; }
.fil a { color: var(--texte-doux); text-decoration: none; }
.fil a:hover { color: var(--accent-vif); }

.article { padding: 20px 0 80px; }
.article .conteneur { max-width: calc(var(--colonne) + 48px); }

.article h1 { font-size: clamp(32px, 4.6vw, 46px); margin: 18px 0 22px; }

.meta-article {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--texte-doux);
  border-bottom: 1px solid var(--bordure);
  padding-bottom: 22px;
  margin-bottom: 34px;
}

.article h2 {
  font-size: 28px;
  margin: 52px 0 16px;
  padding-top: 8px;
  border-top: 1px solid var(--bordure);
}

.article h3 { font-size: 21px; margin: 34px 0 12px; }

.article p { margin: 0 0 18px; }

.article ul, .article ol { margin: 0 0 22px; padding-left: 22px; }
.article li { margin-bottom: 8px; }

.article figure { margin: 34px 0; }
.article figure img { border-radius: var(--rayon); border: 1px solid var(--bordure); }

.article figcaption { font-size: 14px; color: var(--texte-doux); margin-top: 10px; }

.encadre {
  border-left: 3px solid var(--accent);
  background: var(--fond-2);
  border-radius: 0 var(--rayon) var(--rayon) 0;
  padding: 20px 24px;
  margin: 30px 0;
}

.encadre p:last-child { margin-bottom: 0; }
.encadre strong { color: var(--accent-vif); }

.tableau { width: 100%; border-collapse: collapse; margin: 28px 0; font-size: 15px; }

.tableau th,
.tableau td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--bordure);
  vertical-align: top;
}

.tableau th { color: var(--accent-vif); font-weight: 600; }

.sommaire {
  border: 1px solid var(--bordure);
  border-radius: var(--rayon);
  background: var(--fond-2);
  padding: 22px 26px;
  margin-bottom: 40px;
}

.sommaire p { font-weight: 600; margin: 0 0 12px; }
.sommaire ol { margin: 0; padding-left: 20px; }
.sommaire li { margin-bottom: 6px; }
.sommaire a { color: var(--texte-doux); text-decoration: none; }
.sommaire a:hover { color: var(--accent-vif); }

.faq-question { font-size: 19px; margin: 30px 0 10px; }

.suite {
  border-top: 1px solid var(--bordure);
  margin-top: 56px;
  padding-top: 32px;
}

.auteur {
  border: 1px solid var(--bordure);
  border-radius: var(--rayon);
  background: var(--fond-2);
  padding: 22px 26px;
  margin-top: 44px;
}

.auteur-nom {
  font-weight: 700;
  color: var(--texte);
  margin: 0 0 8px;
}

.auteur-bio {
  margin: 0;
  color: var(--texte-doux);
  font-size: 15px;
}

.suite h2 { border: 0; margin-top: 0; padding-top: 0; font-size: 24px; }

/* -------------------------------------------------------------- pied */

.pied { padding: 72px 0 40px; background: var(--fond-2); }

.pied-grille {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: 40px;
}

.pied h2 {
  font-size: 14px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--texte);
  margin: 0 0 18px;
}

.pied ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.pied a { color: var(--texte-doux); text-decoration: none; font-size: 15px; }
.pied a:hover { color: var(--accent-vif); }
.pied .signature { color: var(--texte-doux); font-size: 15px; max-width: 34ch; }

.pied-bas {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  border-top: 1px solid var(--bordure);
  margin-top: 48px;
  padding-top: 24px;
  font-size: 14px;
  color: var(--texte-doux);
}

.pied-bas ul { display: flex; gap: 22px; flex-wrap: wrap; }

/* ------------------------------------------------------------ mobile */

@media (max-width: 900px) {
  .entete .conteneur { gap: 18px; flex-wrap: wrap; padding-top: 12px; padding-bottom: 12px; }
  .navigation { gap: 18px; }
  .section { padding: 62px 0; }
  .entete-section { grid-template-columns: 1fr; gap: 20px; align-items: start; margin-bottom: 34px; }
  .grille-cartes { grid-template-columns: 1fr; }
  .deux-colonnes { grid-template-columns: 1fr; gap: 36px; }
  .pied-grille { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
  .definition { grid-template-columns: 1fr; gap: 6px; }
  .hero { padding: 62px 0 54px; }
  .hero-image img { object-position: 72% center; }
  .hero-voile { background: linear-gradient(180deg, rgba(6, 13, 28, 0.82) 0%, rgba(6, 13, 28, 0.94) 55%); }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .pied-grille { grid-template-columns: 1fr; }
  .boutons .bouton, .boutons .bouton-fantome { width: 100%; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .carte { transition: none; }
}