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

body {
  font-family: 'Inter', sans-serif;
  background: var(--tasman);
  color: var(--log-cabin);
}

h1, h2, h3 {
  font-family: 'Poppins', sans-serif;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: auto;
}

.center {
  text-align: center;
}

/* =========================
   HERO
========================= */
.hero {
  background: linear-gradient(
    120deg,
    var(--log-cabin),
    var(--mallard)
  );
  color: var(--tasman);
  padding: 4rem 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.hero-media {
  background: var(--laurel);
  border-radius: 20px;
}

.btn {
  text-decoration: none;
}

.btn:hover {
  color: var(--tasman);
}

/* =========================
   SECTIONS
========================= */
.section {
  padding: 4rem 0;
}

.light {
  background: var(--tasman);
}

.highlight {
  background: var(--mallard);
  color: var(--tasman);
}

/* nettoyage des listes */
.section .container .two-cols li {
  list-style: none;
}

.checklist,
.checklist li {
  list-style: none;
}

.checklist {
  display: grid;
  gap: 0.8rem;
}

.checklist li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
}

.checklist i {
  color: var(--laurel);
  font-size: 1rem;
}

/* =========================
   BADGES
========================= */
.badges {
  background: var(--green-spring);
  padding: 2rem 0;
}

.badge-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  text-align: center;
}

/* =========================
   LAYOUTS
========================= */
.two-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.card {
  background: var(--tasman);
  padding: 2rem;
  border-radius: 14px;
  color: var(--heavy-metal);
}

.image-box {
  background: var(--green-spring);
  border-radius: 20px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.info {
  background: rgba(255,255,255,0.15);
  padding: 1.5rem;
  border-radius: 10px;
}

/* =========================
   RESPONSIVE
========================= */
@media (max-width: 768px) {
  .hero-grid,
  .two-cols,
  .cards,
  .grid-4,
  .badge-grid {
    grid-template-columns: 1fr;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 70px;
    right: 0;
    width: 100%;
    background: var(--log-cabin);
    flex-direction: column;
    padding: 2rem;
  }

  .nav-links.active {
    display: flex;
  }

  .burger {
    display: flex;
  }
}

@media (max-width: 320px) {
  h1 {
    font-size: 1.5rem;
  }
}