:root {
  --marine: #2f466b;
  --marine-fonce: #1f3150;
  --ciel: #e8f1f8;
  --lac: #7fb3d5;
  --sable: #f7f3ea;
  --texte: #24303f;
  --doux: #5b6878;
  --rayon: 14px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: "Nunito", system-ui, sans-serif;
  color: var(--texte);
  background: #fff;
  line-height: 1.6;
  font-size: 1.05rem;
}
img { max-width: 100%; height: auto; }
a { color: var(--marine); }
h1, h2, h3 { color: var(--marine); line-height: 1.2; margin: 0 0 .6em; }
h1 { font-size: clamp(2.2rem, 6vw, 3.8rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 4vw, 2.4rem); font-weight: 800; }
h3 { font-size: 1.2rem; }

/* Boutons */
.bouton {
  display: inline-block;
  background: var(--marine);
  color: #fff;
  text-decoration: none;
  font-weight: 800;
  padding: .8em 1.6em;
  border-radius: 999px;
  transition: transform .15s, background .15s;
}
.bouton:hover { background: var(--marine-fonce); transform: translateY(-2px); }
.bouton-clair { background: #fff; color: var(--marine); box-shadow: inset 0 0 0 2px var(--marine); }
.bouton-clair:hover { background: var(--ciel); }
.bouton-blanc { background: #fff; color: var(--marine); }
.bouton-blanc:hover { background: var(--ciel); }
.bouton-petit { padding: .45em 1.1em; }

/* En-tête */
.entete {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .6rem clamp(1rem, 4vw, 3rem);
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #e6ebf1;
}
.entete-logo img { height: 52px; width: auto; display: block; }
.entete nav { display: flex; align-items: center; gap: 1.4rem; }
.entete nav a:not(.bouton) { text-decoration: none; font-weight: 600; color: var(--texte); }
.entete nav a:not(.bouton):hover { color: var(--marine); }

/* Accueil */
.hero {
  position: relative;
  min-height: min(88vh, 900px);
  display: flex; align-items: flex-start;
  padding: clamp(3rem, 10vh, 7rem) clamp(1rem, 6vw, 6rem) calc(29vw + 1rem);
  background: linear-gradient(180deg, #cfe3f2 0%, var(--ciel) 45%, #fff 100%);
  overflow: hidden;
}
.hero-texte { position: relative; z-index: 2; max-width: 620px; }
.hero-texte > p { font-size: 1.2rem; color: var(--doux); }
.sur-titre { text-transform: uppercase; letter-spacing: .15em; font-weight: 800; font-size: .85rem !important; color: var(--marine) !important; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.6rem; }
.paysage { position: absolute; left: 0; bottom: 0; width: 100%; height: auto; aspect-ratio: 1440 / 420; }
.montagne-loin { fill: #9db6cf; }
.montagne { fill: var(--marine); }
.lac { fill: var(--lac); }
.coque { fill: var(--marine-fonce); }
.voile { fill: #fff; }
.voile.petite { fill: #f1f5fa; }
.vague { fill: none; stroke: rgba(255,255,255,.55); stroke-width: 3; }
.voilier { animation: tanguer 5s ease-in-out infinite; transform-box: fill-box; transform-origin: bottom center; }
.v2 { animation-delay: -2s; }
@keyframes tanguer { 0%,100% { rotate: -2deg; } 50% { rotate: 2deg; } }
@media (prefers-reduced-motion: reduce) { .voilier { animation: none; } html { scroll-behavior: auto; } }

/* Sections */
.section { padding: clamp(3.5rem, 8vw, 6rem) clamp(1rem, 4vw, 3rem); }
.section-teinte { background: var(--sable); }
.section-marine { background: var(--marine); color: #fff; }
.section-marine h2 { color: #fff; }
.section-marine p { font-size: 1.15rem; opacity: .92; margin-bottom: 1.8rem; }
.conteneur { max-width: 1100px; margin: 0 auto; }
.centre { text-align: center; max-width: 700px; }
.intro { font-size: 1.15rem; color: var(--doux); max-width: 700px; }
.note { color: var(--doux); font-style: italic; }
.deux-colonnes { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }

.valeurs { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.valeurs li { background: var(--ciel); border-radius: var(--rayon); padding: 1.2rem; color: var(--doux); font-size: .95rem; }
.valeurs span { font-size: 1.8rem; display: block; }
.valeurs strong { display: block; color: var(--marine); font-size: 1.1rem; }

.cartes { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1.4rem; margin-top: 2rem; }
.carte { background: #fff; border-radius: var(--rayon); padding: 1.6rem; box-shadow: 0 6px 24px rgba(31,49,80,.08); transition: transform .2s; }
.carte:hover { transform: translateY(-4px); }
.carte p { color: var(--doux); margin: 0; }
.carte-icone { font-size: 2.2rem; margin-bottom: .6rem; }

.ligne-temps { list-style: none; padding: 0; margin: 2rem 0; border-left: 3px solid var(--lac); }
.ligne-temps li { position: relative; padding: .4rem 0 1.2rem 1.6rem; color: var(--doux); }
.ligne-temps li::before { content: ""; position: absolute; left: -9px; top: .75rem; width: 15px; height: 15px; border-radius: 50%; background: var(--marine); border: 3px solid #fff; box-shadow: 0 0 0 2px var(--lac); }
.ligne-temps strong { display: block; color: var(--marine); font-size: 1.1rem; }

.contact-infos { background: var(--ciel); border-radius: var(--rayon); padding: 1.6rem 2rem; }
.contact-infos p { margin: .4rem 0 1rem; }

/* Pied de page */
.pied { background: var(--marine-fonce); color: #c9d5e5; text-align: center; padding: 2.5rem 1rem; }
.pied img { height: 60px; width: auto; opacity: .9; }
.pied p { margin: .8rem 0 0; font-size: .95rem; }

/* Mobile */
@media (max-width: 800px) {
  .entete nav a:not(.bouton) { display: none; }
  .entete-logo img { height: 42px; }
  .deux-colonnes { grid-template-columns: 1fr; }
  .hero { min-height: 0; padding-bottom: 220px; }
  .paysage { height: 200px; aspect-ratio: auto; }
}
@media (max-width: 420px) {
  .valeurs { grid-template-columns: 1fr; }
}