* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  background: linear-gradient(135deg, #eef2ff, #dbe4ff);
}

/* HEADER */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 25px 60px;
}

.logo {
  color: #3b5bff;
}

.nav a {
  margin: 0 15px;
  text-decoration: none;
  color: #333;
}

.nav a:hover {
  color: #3b5bff;
}

/* BOUTONS HEADER */
.auth button {
  margin-left: 10px;
  padding: 8px 15px;
  border-radius: 20px;
  cursor: pointer;
}

.btn-outline {
  border: 1px solid #3b5bff;
  background: transparent;
  color: #3b5bff;
}

.btn-primary {
  background: #3b5bff;
  color: white;
  border: none;
}

/* HERO */
.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 80px 60px;
}

.hero-text {
  flex: 1;
  animation: fadeUp 1s ease;
}

/* TITRES */
.hero-text span {
  color: #3b5bff;
  background: rgba(59,91,255,0.1);
  padding: 5px 10px;
  border-radius: 10px;
}

.hero-text h2 {
  font-size: 42px;
  margin-bottom: 10px;
}

.hero-text h3 {
  color: #888;
  font-size: 22px;
  margin: 10px 0;
}

/* TEXTE */
.hero-text p {
  margin: 20px 0;
  color: #444;
  max-width: 420px;
  line-height: 1.5;
}

.highlight {
  color: #3b5bff;
  font-weight: bold;
}

/* BOUTON PRINCIPAL */
.cta {
  padding: 15px 25px;
  background: #3b5bff;
  color: white;
  border: none;
  border-radius: 30px;
  cursor: pointer;
  transition: 0.3s;
  box-shadow: 0 10px 20px rgba(59,91,255,0.3);
}

.cta:hover {
  transform: translateY(-5px) scale(1.05);
  background: #1c3dff;
  box-shadow: 0 15px 30px rgba(59,91,255,0.5);
}

/* IMAGE */
.hero-img img {
  width: 420px;
  animation: float 3s ease-in-out infinite;
  transition: 0.5s;
}

.hero-img img:hover {
  transform: scale(1.08) rotate(2deg);
}

/* ANIMATIONS */
@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
  100% { transform: translateY(0px); }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}