/* Yambo Kelasi — le site vitrine.
   Aucune police distante, aucun script tiers : sur une connexion congolaise,
   chaque domaine de plus coûte une seconde. Les couleurs sont celles du logo. */

:root {
  --livre: #154241;
  --kelasi: #316060;
  --clair: #5fb3a6;
  --clair-2: #7cc4b8;
  --voile: #e8f3f1;
  --encre: #0d1b2a;
  --texte: #1f2d3a;
  --second: #475569;
  --filet: #e2e8f0;
  --fond: #ffffff;
  --fond-doux: #f6faf9;
  --carte: #ffffff;
  --ombre: 0 1px 2px rgb(13 27 42 / .06), 0 8px 24px rgb(13 27 42 / .06);
  --rayon: 14px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --livre: #5fb3a6;
    --kelasi: #7cc4b8;
    --voile: #12302f;
    --encre: #f1f5f9;
    --texte: #dbe4ec;
    --second: #9fb0c0;
    --filet: #1e2f40;
    --fond: #0b1622;
    --fond-doux: #0f1d2b;
    --carte: #111f2e;
    --ombre: 0 1px 2px rgb(0 0 0 / .3), 0 8px 24px rgb(0 0 0 / .25);
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--texte);
  background: var(--fond);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--livre); }
h1, h2, h3 { color: var(--encre); line-height: 1.15; margin: 0 0 .5em; letter-spacing: -.02em; }
h1 { font-size: clamp(2.3rem, 5.4vw, 3.8rem); font-weight: 800; }
h1 span { color: var(--livre); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); font-weight: 750; }
h3 { font-size: 1.15rem; font-weight: 700; }
p { margin: 0 0 1em; }

.conteneur { width: min(1160px, 100% - 32px); margin-inline: auto; }
.etroit { width: min(760px, 100% - 32px); }
.centre { text-align: center; }
.surtitre {
  font-size: .8rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--kelasi); margin-bottom: .8em;
}
.surtitre-clair { color: var(--clair-2); }

/* ---------- Boutons ---------- */
.bouton {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .6em 1.15em; border-radius: 10px; font-weight: 650; font-size: .95rem;
  text-decoration: none; white-space: nowrap; border: 1.5px solid transparent;
  transition: background .15s, color .15s, border-color .15s, transform .15s;
}
.bouton:hover { transform: translateY(-1px); }
.bouton-grand { padding: .85em 1.5em; font-size: 1rem; }
.bouton-plein { background: #154241; color: #fff; }
.bouton-plein:hover { background: #316060; }
.bouton-discret { color: var(--encre); }
.bouton-discret:hover { background: var(--voile); }
.bouton-contour { border-color: var(--filet); color: var(--encre); background: var(--carte); }
.bouton-contour:hover { border-color: var(--livre); }
.bouton-clair { background: #fff; color: #154241; }
.bouton-clair:hover { background: var(--voile); color: #154241; }
.bouton-contour-clair { border-color: rgb(255 255 255 / .5); color: #fff; }
.bouton-contour-clair:hover { border-color: #fff; }
@media (prefers-color-scheme: dark) {
  .bouton-plein { background: #5fb3a6; color: #0b1622; }
  .bouton-plein:hover { background: #7cc4b8; }
}

/* ---------- En-tête ---------- */
.entete {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--fond) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--filet);
}
.entete-ligne { display: flex; align-items: center; gap: 24px; min-height: 68px; }
.marque img { width: 170px; height: auto; }
.navigation { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.navigation > a {
  color: var(--second); text-decoration: none; font-weight: 550; font-size: .95rem;
  padding: .5em .75em; border-radius: 8px;
}
.navigation > a:hover { color: var(--encre); background: var(--voile); }
.navigation-actions { display: flex; gap: 8px; margin-left: 12px; }
.menu-case, .menu-bouton { display: none; }

@media (max-width: 900px) {
  .menu-bouton {
    display: grid; place-items: center; margin-left: auto;
    width: 44px; height: 44px; cursor: pointer; border-radius: 10px;
  }
  .menu-bouton span, .menu-bouton span::before, .menu-bouton span::after {
    content: ""; display: block; width: 22px; height: 2px; background: var(--encre);
    border-radius: 2px; position: relative; transition: transform .2s, background .2s;
  }
  .menu-bouton span::before { position: absolute; top: -7px; }
  .menu-bouton span::after { position: absolute; top: 7px; }
  .menu-case:checked + .menu-bouton span { background: transparent; }
  .menu-case:checked + .menu-bouton span::before { transform: translateY(7px) rotate(45deg); }
  .menu-case:checked + .menu-bouton span::after { transform: translateY(-7px) rotate(-45deg); }

  .navigation {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    padding: 12px 16px 20px; background: var(--fond); border-bottom: 1px solid var(--filet);
    box-shadow: var(--ombre);
  }
  .menu-case:checked ~ .navigation { display: flex; }
  .navigation > a { padding: .8em .6em; }
  .navigation-actions { margin: 10px 0 0; flex-direction: column; }
  .navigation-actions .bouton { padding: .85em; }
}

/* ---------- Accueil ---------- */
.accueil {
  padding: clamp(48px, 8vw, 96px) 0 clamp(56px, 8vw, 104px);
  background:
    radial-gradient(900px 480px at 85% 10%, color-mix(in srgb, var(--clair) 22%, transparent), transparent 70%),
    radial-gradient(700px 400px at 0% 100%, var(--voile), transparent 70%);
}
.accueil-grille { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.chapeau { font-size: 1.18rem; color: var(--second); max-width: 34em; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 18px; }
.actions-centre { justify-content: center; }
.rassurance { font-size: .88rem; color: var(--second); }

.apercu { position: relative; }
.bulletin {
  background: var(--carte); border: 1px solid var(--filet); border-radius: var(--rayon);
  box-shadow: 0 30px 60px -20px rgb(13 27 42 / .25), var(--ombre);
  padding: 22px; transform: rotate(1.2deg); font-size: .82rem;
}
.bulletin-tete { text-align: center; border-bottom: 2px solid var(--livre); padding-bottom: 12px; margin-bottom: 12px; }
.bulletin-tete span { display: block; font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--second); }
.bulletin-tete strong { display: block; font-size: 1.05rem; color: var(--encre); margin: 2px 0; }
.bulletin-tete em { font-style: normal; color: var(--kelasi); font-weight: 600; }
.bulletin table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.bulletin th, .bulletin td { padding: 6px 6px; text-align: right; border-bottom: 1px solid var(--filet); }
.bulletin th:first-child, .bulletin td:first-child { text-align: left; }
.bulletin th { font-size: .7rem; text-transform: uppercase; letter-spacing: .06em; color: var(--second); font-weight: 650; }
.bulletin tfoot td { font-weight: 700; color: var(--encre); background: var(--fond-doux); }
.bulletin tfoot tr:first-child td { border-top: 2px solid var(--livre); }
.pastille {
  position: absolute; background: var(--carte); border: 1px solid var(--filet); border-radius: 999px;
  padding: 8px 14px; font-size: .82rem; font-weight: 650; color: var(--encre); box-shadow: var(--ombre);
}
.pastille-haut { top: -18px; right: -8px; color: #0e7a5f; }
.pastille-bas { bottom: -18px; left: -10px; }
@media (prefers-color-scheme: dark) { .pastille-haut { color: #7cc4b8; } }

@media (max-width: 900px) {
  .accueil-grille { grid-template-columns: 1fr; gap: 48px; }
  .bulletin { transform: none; }
  .pastille-haut { right: 8px; }
  .pastille-bas { left: 8px; }
}
@media (max-width: 420px) {
  .bulletin { padding: 14px; font-size: .74rem; }
  .bulletin th, .bulletin td { padding: 5px 3px; }
}

/* ---------- Sections ---------- */
.section { padding: clamp(56px, 8vw, 96px) 0; }
.section-teintee { background: var(--fond-doux); }

.cartes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.carte {
  background: var(--carte); border: 1px solid var(--filet); border-radius: var(--rayon);
  padding: 26px; transition: transform .2s, box-shadow .2s, border-color .2s;
}
.carte:hover { transform: translateY(-3px); box-shadow: var(--ombre); border-color: color-mix(in srgb, var(--clair) 50%, var(--filet)); }
.carte p { color: var(--second); margin: 0; font-size: .96rem; }
.icone {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--voile); margin-bottom: 16px;
}
.icone svg {
  width: 24px; height: 24px; fill: none; stroke: var(--livre);
  stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
}
@media (max-width: 900px) { .cartes { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .cartes { grid-template-columns: 1fr; } }

/* ---------- Pour qui ---------- */
.public { display: grid; grid-template-columns: 1.4fr 1fr; gap: 56px; align-items: center; }
.public-inverse .public-texte { order: 2; }
.liste { list-style: none; padding: 0; margin: 0; }
.liste li { position: relative; padding: 0 0 0 34px; margin-bottom: 14px; }
.liste li::before {
  content: ""; position: absolute; left: 0; top: .2em; width: 22px; height: 22px; border-radius: 50%;
  background: var(--voile) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23316060' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12l4 4 8-8'/%3E%3C/svg%3E") center / 14px no-repeat;
}
.public-chiffre {
  background: var(--carte); border: 1px solid var(--filet); border-radius: 20px;
  padding: 40px 32px; text-align: center; box-shadow: var(--ombre);
}
.public-chiffre strong { display: block; font-size: clamp(2.6rem, 6vw, 3.6rem); color: var(--livre); line-height: 1; letter-spacing: -.03em; }
.public-chiffre span { display: block; margin-top: 12px; color: var(--second); }
@media (max-width: 800px) {
  .public { grid-template-columns: 1fr; gap: 28px; }
  .public-inverse .public-texte { order: 0; }
}

/* ---------- Bandeau RDC ---------- */
.bandeau-rdc { background: #154241; color: #d5e8e4; }
.bandeau-rdc h2 { color: #fff; }
.rdc-grille { display: grid; grid-template-columns: 1.2fr 1fr; gap: 56px; align-items: center; }
.rdc-points { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.rdc-points li {
  background: rgb(255 255 255 / .07); border: 1px solid rgb(255 255 255 / .12);
  border-radius: 12px; padding: 16px 18px;
}
.rdc-points strong { color: #fff; }
@media (prefers-color-scheme: dark) { .bandeau-rdc { background: #0f2b2a; } }
@media (max-width: 800px) { .rdc-grille { grid-template-columns: 1fr; gap: 28px; } }

/* ---------- Questions ---------- */
details {
  border: 1px solid var(--filet); border-radius: 12px; background: var(--carte);
  margin-top: 12px; padding: 0 20px;
}
details:first-of-type { margin-top: 36px; }
summary {
  cursor: pointer; list-style: none; padding: 18px 28px 18px 0; font-weight: 650; color: var(--encre);
  position: relative;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%);
  font-size: 1.4rem; font-weight: 400; color: var(--kelasi); transition: transform .2s;
}
details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
details p { color: var(--second); padding-bottom: 6px; }

/* ---------- Appel ---------- */
.appel {
  text-align: center; color: #d5e8e4; border-radius: 24px;
  padding: clamp(40px, 7vw, 72px) clamp(20px, 5vw, 64px);
  background: radial-gradient(600px 300px at 50% 0%, #316060, #154241 70%);
}
.appel h2 { color: #fff; }
.appel p { max-width: 36em; margin-inline: auto; }
.appel-livre { width: 96px; margin: 0 auto 20px; }

/* ---------- Pied ---------- */
.pied { border-top: 1px solid var(--filet); padding: 48px 0 24px; font-size: .92rem; color: var(--second); }
.pied-grille { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 32px; }
.pied-grille img { width: 150px; margin-bottom: 12px; }
.pied nav { display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: flex-start; }
.pied nav a, .pied-bas a { color: var(--second); text-decoration: none; }
.pied nav a:hover, .pied-bas a:hover { color: var(--livre); }
.pied-bas { margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--filet); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}