:root {
  --blue: #3f80ff;
  --blue-light: #eaf2ff;
  --text: #111;
  --bg: #fefefe;
  --font: 'Montserrat', sans-serif;
  --transition: 0.4s ease;
}

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

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

header {
  position: fixed;
  top: 0; left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(10px);
  z-index: 10;
}

.logo {
  height: 32px;
}

nav a {
  margin-left: 1.5rem;
  text-decoration: none;
  font-weight: 600;
  color: var(--text);
  transition: color var(--transition), background var(--transition), transform 0.2s;
}

nav a:hover {
  color: var(--blue);
}

/* Bouton Connexion */
.btn-login {
  padding: 0.4rem 1rem;
  border: 2px solid var(--blue);
  border-radius: 6px;
  color: var(--blue);
}
.btn-login:hover {
  background: var(--blue-light);
  transform: translateY(-2px);
}

/* Bouton S'inscrire */
.btn-signup {
  padding: 0.6rem 1.6rem;
  background: var(--blue);
  color: white;
  border-radius: 6px;
}
.btn-signup:hover {
  background: #2f6ee5;
  color: white;
  transform: translateY(-2px);
}

/* CTA général */
.cta {
  background: var(--blue);
  color: white;
  padding: 0.8rem 1.8rem;
  margin-left: 1rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  transition: background var(--transition), transform 0.2s;
}
.cta:hover {
  background: #2f6ee5;
  transform: translateY(-2px);
}

/* BLOB ANIMATION */
.blob {
  position: fixed;
  top: -120px;
  right: 0;
  width: 100vw;
  max-width: 550px;
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 30% 30%, rgba(63, 128, 255, 0.3), transparent 60%);
  opacity: 0.2; /* ← plus visible qu'avant */
  animation: blob-pulse 8s infinite;
  pointer-events: none;
  z-index: -1;
  filter: blur(12px) brightness(1.1); /* ← touche lumineuse et diffuse */
  box-shadow: 0 0 60px 20px rgba(63, 128, 255, 0.3);
}


@keyframes blob-pulse {
  0%,100% { transform: scale(1) rotate(30deg); }
  50%    { transform: scale(1.1) rotate(30deg); }
}

/* Fade-in des sections */
section {
  opacity: 1;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease, visibility 0s 0.6s;
}

/* Hero */
.hero {
  padding: 8rem 1.5rem 4rem;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}
.hero h1 {
  font-size: 3.2rem;
  line-height: 1.1;
  margin-bottom: 1rem;
}
.hero h1 span {
  color: var(--blue);
}
.hero p {
  font-size: 1.15rem;
  color: #444;
  margin-bottom: 2rem;
}

/* Section-info */
.section-info ul {
  list-style: none;
  max-width: 700px;
  margin: 0 auto;
  font-size: 1.1rem;
  line-height: 2.2;
}
.section-info strong {
  color: var(--blue);
}

/* Sections communes */
.section-how, .section-stats, .section-benefits,
.section-testimonials, .section-trust,
.section-faq, .section-cta {
  padding: 5rem 1.5rem;
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}
.section-how h2, .section-stats h2,
.section-testimonials h2, .section-faq h2,
.section-cta h2 {
  font-size: 2rem;
  margin-bottom: 2rem;
}

/* Steps */
.steps {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 2rem;
}
.steps div {
  flex: 1 1 200px;
}
.steps span {
  display: inline-block;
  background: var(--blue);
  color: white;
  border-radius: 50%;
  width: 40px; height: 40px;
  line-height: 40px;
  font-weight: bold;
  margin-bottom: 0.8rem;
}

/* Stats */
.section-stats p {
  font-size: 1.3rem;
  margin-top: 1rem;
}

/* Benefits */
.section-benefits {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}
.section-benefits div {
  flex: 1 1 250px;
  background: var(--blue-light);
  border-radius: 10px;
  padding: 2rem;
  text-align: left;
  transition: transform 0.3s ease;
}
.section-benefits div:hover {
  transform: translateY(-5px);
}
.section-benefits h3 {
  color: var(--blue);
  margin-bottom: 0.5rem;
}

/* Testimonials */
.testi-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: center;
}
.testi-cards div {
  background: #fff;
  border-radius: 10px;
  padding: 1.8rem;
  max-width: 280px;
  box-shadow: 0 6px 16px rgba(0,0,0,0.05);
}
.testi-cards p {
  font-style: italic;
  margin-bottom: 1rem;
}

/* Trust (FontAwesome) */
.section-trust {
  display: flex;
  flex-wrap: wrap; gap: 2rem;
  justify-content: center; align-items: center;
}
.section-trust div {
  flex: 1 1 200px;
  text-align: center;
}
.section-trust i {
  display: block;
  font-size: 2rem;
  color: var(--blue);
  margin-bottom: 0.6rem;
}

/* FAQ */
.faq-item {
  text-align: left;
  margin: 1rem auto;
  max-width: 700px;
}
.faq-item h3 {
  margin-bottom: 0.5rem;
  color: var(--blue);
}
.faq-item p {
  color: #444;
}

/* Final CTA */
.section-cta .cta.big {
  font-size: 1.2rem;
  padding: 1rem 2.5rem;
}

/* Footer centré & stylé */
footer {
  background: #fafafa;
  padding: 2rem 1.5rem;
}
.footer-content {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}
.footer-content p {
  margin-bottom: 0.8rem;
  color: #666;
}
.footer-content nav a {
  margin: 0 0.5rem;
  color: #666;
  text-decoration: none;
  font-size: 0.9rem;
}
.footer-content nav a:hover {
  color: var(--blue);
}

/* ========== Responsive Mobile (max-width: 600px) ========== */
@media screen and (max-width: 600px) {
  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
    padding: 1rem;
  }

  nav {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  nav a {
    margin: 0.4rem 0;
  }

  .hero {
    padding: 3rem 1rem 3rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .section-info ul {
    font-size: 1rem;
    padding: 0 1rem;
  }

  .steps {
    flex-direction: column;
    align-items: center;
  }

  .section-benefits {
    flex-direction: column;
    align-items: center;
  }

  .testi-cards {
    flex-direction: column;
    align-items: center;
  }

  .section-trust {
    flex-direction: column;
    align-items: center;
  }

  .faq-item {
    padding: 0 1rem;
  }

  .section-cta h2 {
    font-size: 1.4rem;
  }

  .section-cta .cta.big {
    display: block;
    margin: 1rem auto;
  }

  footer {
    padding: 1.5rem 1rem;
  }

  .footer-content nav {
    flex-direction: column;
  }

  .footer-content nav a {
    margin: 0.3rem 0;
  }

  .blob {
    display: none; /* désactive le visuel décoratif sur petits écrans */
  }
}

@media screen and (max-width: 768px) {
  header {
    justify-content: center;
    border-bottom: 1px solid #ddd;
    padding: 1rem;
    position: relative;
  }

  .logo {
    margin: 0 auto;
  }

  nav {
    position: absolute; /* ← Évite qu’il prenne de la place */
    width: 100%;
    height: 0;
    overflow: hidden;
  }

  .burger,
  .nav-links {
    display: none !important;
  }
}


.nav-links {
  display: flex;
  align-items: center;
}