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

body {
  font-family: Arial, sans-serif;
  background: #fff7ed;
  color: #1f1308;
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

.hero {
  min-height: 100vh;
  background:
    linear-gradient(rgba(36, 16, 4, 0.72), rgba(36, 16, 4, 0.72)),
    url("https://images.unsplash.com/photo-1568901346375-23c9450c58cd?auto=format&fit=crop&w=1600&q=80");
  background-size: cover;
  background-position: center;
  color: white;
  padding: 24px 6%;
}

.btn-retour-site {
  position: fixed;
  bottom: 25px;
  left: 25px;
  z-index: 9999;

  padding: 13px 22px;
  border-radius: 999px;

  background: rgba(36, 16, 4, 0.72);
  color: white;
  text-decoration: none;

  font-size: 14px;
  font-weight: 600;

  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(12px);

  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
  transition: 0.25s ease;
}

.btn-retour-site:hover {
  background: #ef4444;
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(239, 68, 68, 0.35);
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.4rem;
  font-weight: 900;
}

.logo span {
  color: #f97316;
}

nav div {
  display: flex;
  gap: 24px;
  font-weight: 700;
}

.hero-content {
  max-width: 780px;
  padding-top: 18vh;
}

.tag {
  color: #f97316;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 1px;
}

h1 {
  font-size: clamp(2.6rem, 7vw, 5.8rem);
  line-height: 0.95;
  margin: 16px 0;
}

.hero-content p {
  max-width: 610px;
  font-size: 1.1rem;
}

.buttons {
  display: flex;
  gap: 14px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  padding: 14px 22px;
  border-radius: 999px;
  font-weight: 900;
}

.primary {
  background: #f97316;
  color: white;
}

.dark {
  background: #1f1308;
  color: white;
}

.section,
.split {
  width: min(1120px, 92%);
  margin: auto;
  padding: 80px 0;
}

.title {
  margin-bottom: 30px;
}

.title h2,
.split h2,
.contact h2 {
  font-size: clamp(2rem, 5vw, 3.8rem);
  line-height: 1;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.cards article,
.info-box {
  background: white;
  padding: 28px;
  border-radius: 24px;
  box-shadow: 0 18px 45px rgba(124, 45, 18, 0.12);
}

.cards h3 {
  font-size: 1.4rem;
}

.cards p {
  margin: 12px 0;
  color: #6b3f22;
}

.cards strong {
  color: #f97316;
  font-size: 1.4rem;
}

.split {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 32px;
  align-items: center;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.gallery-grid div {
  display: grid;
  place-items: center;
  height: 220px;
  background: white;
  border-radius: 24px;
  font-size: 4rem;
  box-shadow: 0 18px 45px rgba(124, 45, 18, 0.12);
}

.contact {
  width: min(900px, 92%);
  margin: 50px auto;
  padding: 56px 24px;
  text-align: center;
  background: #1f1308;
  color: white;
  border-radius: 30px;
}

.contact p {
  margin: 14px 0 24px;
}

footer {
  padding: 28px;
  text-align: center;
  color: #7c2d12;
}

/* Responsive tablette / mobile */
@media (max-width: 850px) {
  nav div {
    display: none;
  }

  .stats,
  .cards,
  .devis {
    grid-template-columns: 1fr;
  }

  .devis {
    padding: 32px 22px;
  }
}

/* Bouton retour sur mobile */
@media (max-width: 768px) {
  .btn-retour-site {
    bottom: 15px;
    left: 15px;
    padding: 11px 16px;
    font-size: 13px;
  }
}