body {
    margin: 0;
    font-family: 'Helvetica Neue', sans-serif;
    background: #ffffff;
    color: #000;
}
.sticky-header {
    background-color: #08201e;
    padding: 10px 0;
    text-align: center;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}
.sticky-header img {
    height: 50px;
}
.hero {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 50px 5%;
    flex-wrap: wrap;
    background: linear-gradient(to right, #0e2f2c, #8e8dbf);
    color: white;
}
.text {
    max-width: 40%;
}
.text h1 {
    font-size: 48px;
    margin: 20px 0 10px;
}
.text p {
    font-size: 20px;
}
.store-logos {
    margin-top: 20px;
}
.store-logos img {
    width: 140px;
    height: 41px;
    margin-right: 10px;
}
.mockup img {
    height: 900px;
    width: 600px;
}
.concept {
    display: flex;
    justify-content: space-between;
    padding: 100px 80px;
    background: white;
    color: #0b0b0b;
}
.left-title {
    flex: 1;
}
.left-title h2 {
    font-size: 36px;
    font-weight: normal;
}
.right-text {
    flex: 2;
    max-width: 700px;
}
.right-text h3 {
    font-size: 22px;
    color: #08201e;
    margin-bottom: 20px;
}
.right-text p {
    font-size: 16px;
    line-height: 1.6;
}
.features {
    background: linear-gradient(to right, #0e2f2c, #8e8dbf);
    color: white;
    padding: 80px 60px;
}
.features h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 40px;
}
.features-columns {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
    justify-content: center;
}
.feature {
    flex: 1;
    min-width: 280px;
    max-width: 350px;
}
.feature h3 {
    font-size: 20px;
    margin-bottom: 15px;
}
.feature p, .feature ul {
    font-size: 15px;
    line-height: 1.6;
}

.fonctionnement {
    background: white;
    display: flex;
    justify-content: space-between;
    padding: 80px 10%;
    align-items: center;
    flex-wrap: wrap;
}

.text-fonctionnement {
    max-width: 50%;
}

.text-fonctionnement h2 {
    font-size: 32px;
    margin-bottom: 10px;
    color: #0a2d2b;
}

.text-fonctionnement h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #0a2d2b;
}

.text-fonctionnement p {
    font-size: 16px;
    line-height: 1.6;
    color: #333;
}

.image-fonctionnement img {
    border-radius: 10px;
}

.fonctionnement {
    background: white;
    display: flex;
    justify-content: space-between;
    padding: 80px 10%;
    align-items: center;
    flex-wrap: wrap;
}
.fonctionnement-left {
    max-width: 50%;
}
.fonctionnement-left h2 {
    font-size: 32px;
    margin-bottom: 10px;
    color: #0a2d2b;
}
.fonctionnement-left h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #0a2d2b;
}
.fonctionnement-left p {
    font-size: 16px;
    line-height: 1.6;
    color: #333;
}
.fonctionnement-right img {
    width: 359px;
    height: 537px;
    border-radius: 10px;
}

.ambition {
    background: linear-gradient(to right, #0e2f2c, #8e8dbf);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 100px 10%;
    flex-wrap: wrap;
}
.ambition-left img {
    width: 269px;
    height: 515px;
    border-radius: 8px;
}
.ambition-right {
    max-width: 60%;
    padding-left: 40px;
}
.ambition-right h2 {
    font-size: 36px;
    margin-bottom: 20px;
}
.ambition-right p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 15px;
}
.who-title {
  font-size: 24px;
  margin-top: 80px; /* à ajuster */
  color: white;
}
.qui-suis-je-text {
  margin-top: 145px; /* ajuste la valeur comme tu veux : 40px, 80px, etc. */
}

.contact-section {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 100px 80px;
  background: #fff;
  color: #000;
  flex-wrap: wrap;
  gap: 40px;
}

.contact-left h2 {
  font-size: 42px;
  font-weight: 500;
  line-height: 1.2;
}

.contact-form {
  flex: 1;
  min-width: 300px;
  max-width: 600px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: flex;
  gap: 20px;
}

.form-row input {
  flex: 1;
}

.contact-form input,
.contact-form textarea {
  padding: 12px;
  border: 1px solid #000;
  border-radius: 2px;
  font-size: 16px;
}

.contact-form button {
  padding: 12px;
  font-size: 16px;
  border: 1px solid #000;
  background: transparent;
  cursor: pointer;
}




.footer {
  background-color: #08201e;
  padding: 40px 20px;
  text-align: center;
  color: white;
}



.footer-link {
  display: block;
  color: white;
  text-decoration: none;
  font-size: 16px;
  margin-bottom: 10px;
}

.footer-link:hover {
  text-decoration: underline;
}

.footer-credit {
  font-size: 14px;
  opacity: 0.7;
}

.mentions-content {
  padding: 100px 80px;
  max-width: 900px;
  margin: 0 auto;
  color: #000;
  background: #fff;
}

.mentions-content h1 {
  font-size: 36px;
  margin-bottom: 30px;
}

.mentions-content p {
  margin-bottom: 20px;
  line-height: 1.6;
  font-size: 16px;
}


.back-button {
  position: absolute;
  top: 30px;
  left: 30px;
  width: 40px;
  height: 40px;
  background-color: #08201e;
  color: white;
  font-size: 24px;
  text-align: center;
  line-height: 40px;
  border-radius: 50%;
  text-decoration: none;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
  transition: background 0.3s ease;
  z-index: 1000;
}

.back-button:hover {
  background-color: #0e2d2b;
}


body {
  position: relative;
}

.back-button {
  z-index: 9999;
}


.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}








.footer-logo {
  max-width: 80px;
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto 20px;
}


/* --------- MOBILE OPTIMISATION ----------- */
@media screen and (max-width: 768px) {
  body {
    font-size: 16px;
  }

  header.top-banner {
    padding: 20px;
    text-align: center;
  }

  .top-banner .logo {
    max-width: 100px;
    height: auto;
  }

  .ambition {
    flex-direction: column;
    gap: 40px;
    padding: 60px 20px;
  }

  .ambition-left,
  .ambition-right {
    max-width: 100%;
  }

  .ambition-right h2 {
    font-size: 28px;
  }

  .ambition-right p {
    font-size: 15px;
  }

  .who-title {
    text-align: center;
    margin-top: 30px;
    font-size: 20px;
  }

  .contact-section {
    flex-direction: column;
    padding: 60px 20px;
    gap: 30px;
  }

  .contact-left h2 {
    font-size: 28px;
    text-align: center;
  }

  .form-row {
    flex-direction: column;
    gap: 10px;
  }

  .contact-form {
    gap: 15px;
  }

  .footer {
    padding: 40px 20px;
    text-align: center;
  }

  .footer-logo {
    max-width: 60px;
  }

  .back-button {
    top: 20px;
    left: 20px;
    width: 36px;
    height: 36px;
    font-size: 20px;
    line-height: 36px;
  }

  .mentions-content {
    padding: 60px 20px;
  }

  .mentions-content h1 {
    font-size: 26px;
  }

  .mentions-content p {
    font-size: 15px;
  }
}


/* --- Sécurité responsive --- */
html, body {
  max-width: 100%;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
}

section,
.ambition,
.contact-section,
.mentions-content {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

* {
  box-sizing: border-box;
}


.lang-switcher {
  position: absolute;
  top: 20px;
  right: 20px;
  display: flex;
  gap: 8px;
  z-index: 9999;
}

.lang-switcher button {
  background: #08201e;
  color: white;
  border: none;
  border-radius: 50px;
  padding: 4px 10px;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.lang-switcher button:hover {
  background: #0e2d2b;
}


.top-banner {
  background-color: #112d2a;
  padding: 15px 30px;
}

.banner-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.top-banner .logo {
  height: 50px;
}

.top-nav a {
  color: white;
  margin-left: 20px;
  text-decoration: none;
  font-size: 16px;
}

.top-nav a:hover {
  text-decoration: underline;
}