:root {
  --bleu: #1565c0;
  --bleu-fonce: #0d47a1;
  --bleu-clair: #e3f2fd;
  --texte: #1a2733;
  --gris: #5c6b78;
  --blanc: #ffffff;
  --bord: #d6e4f0;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--texte);
  background: var(--blanc);
  line-height: 1.6;
}

.conteneur { max-width: 1000px; margin: 0 auto; padding: 0 1.25rem; }

/* ── En-tête ── */
header {
  background: var(--blanc);
  border-bottom: 1px solid var(--bord);
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  padding: 0.75rem 1.25rem;
  max-width: 1000px;
  margin: 0 auto;
}
.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--bleu-fonce);
  text-decoration: none;
}
.logo span { color: var(--bleu); }
nav ul {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  flex-wrap: wrap;
}
nav a {
  color: var(--texte);
  text-decoration: none;
  font-weight: 500;
  padding: 0.25rem 0;
}
nav a:hover, nav a.actif { color: var(--bleu); border-bottom: 2px solid var(--bleu); }

/* ── Héros ── */
.heros {
  background: linear-gradient(160deg, var(--bleu-fonce), var(--bleu));
  color: var(--blanc);
  text-align: center;
  padding: 3.5rem 1.25rem;
}
.heros h1 { font-size: 2rem; margin-bottom: 0.75rem; }
.heros p { font-size: 1.1rem; opacity: 0.95; max-width: 600px; margin: 0 auto 1.5rem; }

/* ── Boutons ── */
.btn {
  display: inline-block;
  background: var(--blanc);
  color: var(--bleu-fonce);
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border-radius: 6px;
  text-decoration: none;
  border: none;
  font-size: 1rem;
  cursor: pointer;
}
.btn:hover { background: var(--bleu-clair); }
.btn-bleu { background: var(--bleu); color: var(--blanc); }
.btn-bleu:hover { background: var(--bleu-fonce); }

/* ── Sections ── */
section { padding: 2.5rem 0; }
h2 { color: var(--bleu-fonce); font-size: 1.5rem; margin-bottom: 1rem; }
h3 { color: var(--bleu); margin-bottom: 0.5rem; }

.grille {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 1.25rem;
}
.carte {
  background: var(--bleu-clair);
  border: 1px solid var(--bord);
  border-radius: 8px;
  padding: 1.5rem;
}
.carte.blanche { background: var(--blanc); }

/* ── Tarifs ── */
.carte-tarif {
  background: var(--blanc);
  border: 1px solid var(--bord);
  border-radius: 8px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
}
.carte-tarif.vedette { border: 2px solid var(--bleu); }
.badge {
  display: inline-block;
  background: var(--bleu);
  color: var(--blanc);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.5rem;
  align-self: flex-start;
}
.prix { font-size: 1.75rem; font-weight: 700; color: var(--bleu-fonce); margin: 0.5rem 0; }
.prix small { font-size: 0.9rem; font-weight: 400; color: var(--gris); }
.carte-tarif ul { list-style: none; margin: 0.75rem 0 1.25rem; flex: 1; }
.carte-tarif li { padding: 0.3rem 0; padding-left: 1.4rem; position: relative; }
.carte-tarif li::before { content: "✓"; color: var(--bleu); position: absolute; left: 0; font-weight: 700; }

/* ── Formulaire ── */
form label { display: block; font-weight: 600; margin: 1rem 0 0.25rem; }
form input, form textarea, form select {
  width: 100%;
  padding: 0.65rem;
  border: 1px solid var(--bord);
  border-radius: 6px;
  font: inherit;
}
form input:focus, form textarea:focus { outline: 2px solid var(--bleu); border-color: var(--bleu); }

/* ── Cal.com ── */
.cadre-cal {
  width: 100%;
  height: 750px;
  border: 1px solid var(--bord);
  border-radius: 8px;
}

/* ── Pied de page ── */
footer {
  background: var(--bleu-fonce);
  color: var(--blanc);
  padding: 2rem 1.25rem;
  margin-top: 2rem;
}
footer .conteneur { display: flex; flex-wrap: wrap; gap: 2rem; justify-content: space-between; }
footer a { color: var(--bleu-clair); text-decoration: none; }
footer a:hover { text-decoration: underline; }
footer p { margin: 0.25rem 0; font-size: 0.95rem; }
.mention { width: 100%; text-align: center; font-size: 0.8rem; opacity: 0.7; margin-top: 1rem; }

@media (max-width: 600px) {
  .heros h1 { font-size: 1.5rem; }
  .nav { justify-content: center; gap: 0.5rem; }
  nav ul { gap: 0.9rem; justify-content: center; }
  .cadre-cal { height: 900px; }
}