:root {
  --bordeaux: #6d1a2b;
  --bordeaux-fonce: #4a1120;
  --vert: #5b7a5e;
  --vert-clair: #e8efe8;
  --creme: #faf6f1;
  --texte: #2b2326;
  --gris: #6b6165;
  --rayon: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 70px; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--creme);
  color: var(--texte);
  line-height: 1.6;
}
h1, h2, h3 { font-family: 'Playfair Display', Georgia, serif; font-weight: 600; line-height: 1.2; }
a { color: var(--bordeaux); }

/* Navigation */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: var(--bordeaux); color: #fff;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 20px; height: 56px;
}
.nav .logo { font-family: 'Playfair Display', serif; font-size: 1.2rem; color: #fff; text-decoration: none; }
.nav ul { display: flex; gap: 24px; list-style: none; }
.nav ul a { color: #fff; text-decoration: none; font-size: .95rem; opacity: .9; }
.nav ul a:hover { opacity: 1; text-decoration: underline; }
.burger { display: none; background: none; border: 0; color: #fff; font-size: 1.6rem; cursor: pointer; }

@media (max-width: 720px) {
  .burger { display: block; }
  .nav ul {
    display: none; position: absolute; top: 56px; left: 0; right: 0;
    background: var(--bordeaux-fonce); flex-direction: column; gap: 0;
  }
  .nav ul.ouvert { display: flex; }
  .nav ul a { display: block; padding: 14px 20px; border-top: 1px solid rgba(255,255,255,.12); }
}

/* Hero */
.hero {
  background: linear-gradient(160deg, var(--bordeaux) 0%, var(--bordeaux-fonce) 100%);
  color: #fff; text-align: center; padding: 90px 20px 100px;
}
.hero .sur-titre { letter-spacing: .25em; text-transform: uppercase; font-size: .8rem; opacity: .8; }
.hero h1 { font-size: clamp(2.4rem, 8vw, 4.5rem); margin: 14px 0; }
.hero .esperluette { color: #b9cfba; font-style: italic; }
.hero .date { font-size: 1.15rem; }
.hero .lieu { opacity: .85; margin-top: 4px; }
.btn {
  display: inline-block; margin-top: 28px; padding: 13px 28px; border-radius: 999px;
  background: var(--vert); color: #fff; text-decoration: none; border: 0;
  font: inherit; font-weight: 600; cursor: pointer;
}
.btn:hover { filter: brightness(1.08); }
.btn:disabled { opacity: .6; cursor: wait; }

/* Sections */
section { padding: 64px 20px; }
.contenu { max-width: 820px; margin: 0 auto; }
section h2 { font-size: 2rem; color: var(--bordeaux); text-align: center; margin-bottom: 8px; }
.intro { text-align: center; color: var(--gris); margin-bottom: 32px; }
.alt { background: var(--vert-clair); }

/* Formulaire */
form { background: #fff; padding: 28px; border-radius: var(--rayon); box-shadow: 0 4px 20px rgba(0,0,0,.06); }
.champ { margin-bottom: 18px; }
.deux { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 520px) { .deux { grid-template-columns: 1fr; } }
label, legend { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 6px; }
input[type=text], select, textarea {
  width: 100%; padding: 12px; border: 1.5px solid #d9d0d2; border-radius: 10px;
  font: inherit; background: #fff;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--vert); border-color: var(--vert); }
textarea { min-height: 90px; resize: vertical; }
fieldset { border: 0; }
.choix { display: flex; gap: 12px; flex-wrap: wrap; }
.choix label {
  flex: 1; min-width: 140px; border: 1.5px solid #d9d0d2; border-radius: 10px;
  padding: 12px; text-align: center; cursor: pointer; font-weight: 500; margin: 0;
}
.choix input { position: absolute; opacity: 0; }
.choix label:has(input:checked) { border-color: var(--bordeaux); background: #f7e9ec; color: var(--bordeaux); font-weight: 600; }
.piege { position: absolute; left: -9999px; }
.message { margin-top: 16px; padding: 14px; border-radius: 10px; display: none; text-align: center; }
.message.ok { display: block; background: #e3f1e4; color: #24492a; }
.message.erreur { display: block; background: #f9e1e4; color: #7a1c2c; }
.deadline { text-align: center; font-size: .9rem; color: var(--gris); margin-top: 12px; }

/* Cartes */
.grille { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.carte { background: #fff; border-radius: var(--rayon); padding: 22px; box-shadow: 0 4px 20px rgba(0,0,0,.06); }
.carte h3 { color: var(--bordeaux); margin-bottom: 8px; }
.carte p + p { margin-top: 6px; }
.etiquette { font-size: .8rem; color: var(--vert); font-weight: 600; text-transform: uppercase; letter-spacing: .06em; }

.planning { list-style: none; border-left: 3px solid var(--vert); margin-left: 8px; }
.planning li { padding: 0 0 22px 22px; position: relative; }
.planning li::before {
  content: ''; position: absolute; left: -9px; top: 6px; width: 15px; height: 15px;
  background: var(--bordeaux); border-radius: 50%;
}
.planning .heure { font-weight: 700; color: var(--bordeaux); }

.video { position: relative; padding-top: 56.25%; border-radius: 10px; overflow: hidden; background: #000; margin: 12px 0; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

footer { background: var(--bordeaux-fonce); color: #fff; text-align: center; padding: 28px 20px; font-size: .9rem; }

.liens { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 10px; }
.liens a { font-size: .9rem; font-weight: 600; text-decoration: none; border: 1.5px solid var(--bordeaux); border-radius: 999px; padding: 4px 14px; }
.liens a:hover { background: var(--bordeaux); color: #fff; }

dialog { margin: auto; border: 0; border-radius: var(--rayon); padding: 28px; max-width: 420px; width: calc(100% - 40px); text-align: center; box-shadow: 0 10px 40px rgba(0,0,0,.3); }
dialog::backdrop { background: rgba(40, 10, 18, .6); }
dialog h3 { color: var(--bordeaux); font-size: 1.5rem; margin-bottom: 10px; }
.merci-liens { display: flex; flex-direction: column; gap: 10px; margin: 18px 0 8px; }
.merci-liens .btn { margin: 0; }
.fermer { background: none; border: 0; color: var(--gris); text-decoration: underline; cursor: pointer; font: inherit; margin-top: 6px; }