/*
Auteur :
  - Louis AMEDRO (alias Osiris Sio)

© 2026 Osiris Sio - Tous droits réservés.
*/

header {
  background: linear-gradient(
    180deg,
    var(--bleu-fonce) 0%,
    var(--bleu-clair) 100%
  );
  color: var(--blanc);
  position: fixed;
  top: 0;
  transition: all var(--transition);
  width: 100%;
  z-index: 1000;
}

.barre {
  align-items: center;
  display: flex;
  justify-content: center;
  padding: 0.5em 0;
}

.logo img {
  height: 70px;
  transition: transform var(--transition);
}

.logo img:hover {
  transform: scale(1.05);
}

.main-nav {
  max-width: 40em;
}

.nav-liens {
  display: flex;
  gap: 2em;
  justify-content: center;
  list-style: none;
  margin: 0 3em;
  padding: 0;
}

.nav-liens li a {
  border-radius: 5px;
  color: var(--jaune);
  display: inline-block;
  font-size: 1.4em;
  font-weight: bold;
  margin: 0em 0em;
  padding-bottom: 0.1em;
  position: relative;
  text-align: left;
  text-decoration: none;
  transition: color 0.3s ease;
}

/* Animation sous menu barre */
.nav-liens li a::after {
  background: var(--jaune);
  bottom: 0;
  content: '';
  height: 4px;
  left: 0;
  position: absolute;
  transition: width 0.3s ease;
  width: 0%;
}

.nav-liens li a:hover,
.nav-liens li a.actif {
  color: #fff;
}

.nav-liens li a:hover::after,
.nav-liens li a.actif::after {
  width: 100%;
}

.burger {
  align-items: center;
  background: none;
  border: none;
  cursor: pointer;
  display: none;
  flex-direction: column;
  height: 60px;
  justify-content: center;
  position: relative;
  width: 60px;
  z-index: 1100;
}

.burger span {
  background: var(--jaune);
  border-radius: 3px;
  height: 6px;
  left: 12px;
  margin: 0;
  pointer-events: none;
  position: absolute;
  right: 12px;
}

.burger span:nth-child(1) {
  top: 16px;
}

.burger span:nth-child(2) {
  top: 25px;
}

.burger span:nth-child(3) {
  top: 34px;
}

.burger.open span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.burger.open span:nth-child(2) {
  opacity: 0;
}

.burger.open span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* Bouton flèche vers le haut */
#fleche-haut {
  align-items: center;
  background: var(--bleu-fonce);
  border-radius: 50%;
  border: 4px solid var(--jaune);
  bottom: 1em;
  color: var(--jaune);
  cursor: pointer;
  display: flex;
  font-size: 2em;
  height: 56px;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  position: fixed;
  right: 1em;
  transition:
    opacity 0.4s,
    transform 0.4s,
    box-shadow 0.3s,
    background 0.3s;
  width: 56px;
  z-index: 500;
}

#fleche-haut.show {
  opacity: 1;
  pointer-events: auto;
  transform: scale(1);
}

#fleche-haut:active {
  transform: scale(0.92);
}

#fleche-haut:hover {
  border-color: var(--blanc);
  color: var(--blanc);
  transform: scale(1.12);
}

/* Masquer la flèche quand le menu burger est ouvert */
.main-nav.open ~ #scrollTopBtn,
.burger.open ~ #scrollTopBtn,
body.menu-open #scrollTopBtn {
  opacity: 0 !important;
  pointer-events: none !important;
}

/* ----- Menu Déroulant ----- */
.dropdown {
  position: relative;
}

.dropdown-menu {
  background: linear-gradient(
    180deg,
    var(--bleu-fonce) 0%,
    var(--bleu-clair) 100%
  );
  border-radius: 5px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  display: none;
  left: 0;
  list-style: none;
  margin: 0;
  min-width: 150px;
  padding: 0.5em 0;
  position: absolute;
  top: 100%;
  z-index: 1000;
}

@media (min-width: 881px) {
  .dropdown:hover .dropdown-menu {
    display: block;
  }
  .dropdown:hover .arrow {
    transform: rotate(180deg);
  }
}

.arrow {
  display: inline-block;
  font-size: 0.8em;
  margin-left: 5px;
  transition: transform 0.3s ease;
}

.dropdown.open .arrow {
  transform: rotate(180deg);
}

.dropdown-menu li {
  margin: 0;
  padding: 0;
}

.dropdown-menu li a {
  border-radius: 0;
  color: var(--blanc);
  display: block;
  font-size: 1.1em;
  padding: 0.5em 1em;
}

.dropdown-menu li a::after {
  display: none;
}

.dropdown-menu li a:hover {
  background: var(--bleu-clair);
  color: var(--jaune);
}

/* ----- Responsive ----- */
@media (max-width: 750px) {
  .barre {
    padding-left: 0px;
  }

  .logo {
    display: flex;
    justify-content: center;
    width: 100%;
  }

  .main-nav {
    background: linear-gradient(
      180deg,
      var(--bleu-fonce) 0%,
      var(--bleu-clair) 100%
    );
    display: flex;
    flex-direction: column;
    height: 100%;
    justify-content: flex-start;
    opacity: 0;
    overflow: hidden;
    pointer-events: none;
    position: fixed;
    right: 0;
    top: 0;
    transform: translateX(100%);
    width: 15em;
    z-index: 1050;
  }

  .main-nav.transition-ready {
    transition:
      transform 0.5s cubic-bezier(0.4, 0, 0.2, 1),
      opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .main-nav.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(0);
  }

  .nav-liens {
    display: flex;
    flex-direction: column;
    gap: 3em;
    height: auto;
    justify-content: flex-start;
    margin: 100px 0px 0px 0px;
    padding: 0 1.5em;
  }

  .nav-liens li a {
    display: block;
    font-size: 1.7em;
    text-align: left;
  }

  .dropdown-menu {
    background: transparent;
    box-shadow: none;
    display: none;
    margin-top: 0.5em;
    padding-left: 1.5em;
    position: relative;
    right: 0;
    top: 0;
  }

  .dropdown.open .dropdown-menu {
    display: block;
  }

  .dropdown-menu li a {
    font-size: 1.3em;
    padding: 0.3em 0;
  }

  .burger {
    background: var(--bleu-fonce);
    border-radius: 30%;
    border: var(--jaune) 2px solid;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    display: flex;
    padding: 1em;
    position: fixed;
    right: 1.5em;
    top: 1.5em;
    z-index: 1200;
  }

  #scrollTopBtn {
    background: var(--bleu-fonce);
    border-radius: 50%;
    border: 3px solid var(--jaune);
    bottom: 0.5em;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    color: var(--jaune);
    font-size: 1.5em;
    height: 48px;
    right: 0.2em;
    width: 48px;
  }

  #fleche-haut {
    align-self: center;
    bottom: 0.4em;
    position: fixed;
    right: auto;
  }

  /* Backdrop pour le menu mobile */
  .menu-backdrop {
    background: rgba(0, 0, 0, 0.6);
    display: block;
    height: 100%;
    left: 0;
    opacity: 0;
    pointer-events: none;
    position: fixed;
    top: 0;
    transition: opacity 0.4s ease;
    width: 100%;
    z-index: 1040;
  }

  body.menu-open .menu-backdrop {
    opacity: 1;
    pointer-events: auto;
  }

  /* Désactiver les hovers sur mobile */
  .nav-liens li a:hover {
    color: var(--jaune);
  }

  .nav-liens li a:hover::after {
    width: 0%;
  }

  .dropdown-menu li a:hover {
    background: transparent;
    color: var(--blanc);
  }
}

@media (min-width: 881px) {
  .menu-backdrop {
    display: none;
  }
}