/* === RESET & BASE === */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333;
}

.container {
  max-width: 1000px;
  margin: auto;
  padding: 20px;
}
.presentation.container{
  text-align: center;
  color: black;
  padding: 40px 20px;
}

/* === HEADER === */
#main-header {
  position: fixed;
  top: 0;
  width: 100%;
  background: transparent;
  transition: background-color 0.3s ease, padding 0.3s ease;
  z-index: 1000;
  border-bottom: none;
  padding: 20px 0;

}

#main-header.scrolled {
  background-color: #373C48;
  border-bottom: 1px solid #222;
  padding: 40px 0;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}

.logo img {
  height: 130px;
  display: block;
}

/* === NAVIGATION === */
nav {
  flex: 1;
  text-align: right;
}

#menu {
  list-style: none;
  display: inline-flex;
  gap: 15px;
}

#menu li a {
  text-decoration: none;
  color: #FF0000;
  border: 2px solid transparent;
  padding: 6px 12px;
  border-radius: 6px;
  transition: all 0.3s ease;
  font-weight: 600;
}

#menu li a:hover,
#menu li a.active {
  border: 2px solid #FF0000;
  color: #FF0000;
}

#nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: #FF0000;
}

/* === BOUTONS === */
.btn {
  display: inline-block;
  background: #007BFF;
  color: #fff;
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 4px;
  margin-top: 10px;
}

.btn.btn-outline {
  padding: 12px 25px;
  border: 2px solid white;
  background: transparent;
  color: white;
  font-weight: 700;
  font-size: 1.1rem;
  border-radius: 6px;
  text-decoration: none;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.btn.btn-outline:hover {
  background-color: white;
  color: #FF1616;
  border-color: #FF0000;
  cursor: pointer;
}

/* === FOOTER === */
footer {
  text-align: center;
  padding: 20px 0;
  border-top: 1px solid #ddd;
  margin-top: 40px;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  #menu {
    display: none;
    flex-direction: column;
    background: #fff;
    position: absolute;
    top: 100%;
    right: 0;
    left: auto;
    width: 200px;
    border: 1px solid #ddd;
    border-radius: 0 0 6px 6px;
  }

  #menu.active {
    display: flex;
  }

  #nav-toggle {
    display: inline-block;
  }

  nav {
    text-align: right;
  }

  .btn.btn-outline {
    width: 100%;
    max-width: 250px;
    margin: 0 auto;
  }
}
/* === FOOTER STICKY (toujours en bas sans flotter) === */
html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

main, section {
  flex-shrink: 0;
}

body > main {
  flex: 1;
}

.footer {
  background-color: #2d2f3a;
  color: white;
  text-align: center;
  padding: 12px 20px;
  font-size: 0.85rem;
  border-top: 1px solid #444;
  margin-top: auto;
}