/* === HEADER === */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--color-on-dark-15);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  height: var(--header-height);
  border-bottom: var(--color-header-border) 1px solid;
  transition: background var(--transition), box-shadow var(--transition);
}

/* Fond blanc solide apres le scroll */
.site-header.scrolled {
  background: var(--color-white);
  border-bottom: var(--color-header-border-scrolled) 1px solid;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo */
.logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-img {
  height: 44px;
  width: auto;
  transition: filter var(--transition);
}

/* Logo en blanc quand le header est transparent */
.site-header:not(.scrolled) .logo-img {
  filter: brightness(0) invert(1);
}

.site-title {
  font-family: var(--font);
  font-weight: 800;
  font-size: 1rem;
  color: var(--color-white);
  line-height: 1.3;
  max-width: 160px;
  transition: color var(--transition);
}

/* Titre en navy apres le scroll */
.site-header.scrolled .site-title {
  color: var(--color-navy);
}

/* Navigation */
.main-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav a {
  display: block;
  padding: 8px 14px;
  color: var(--color-on-dark-90);
  font-weight: 800;
  font-size: 0.88rem;
  transition: color var(--transition), text-decoration-color var(--transition);
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 4px;
}

.main-nav a:hover {
  color: var(--color-white);
  text-decoration-color: var(--color-white);
}

.main-nav a.active {
  color: var(--color-white);
  text-decoration-color: var(--color-pink);
}

/* Liens en navy quand le header est blanc (apres scroll) */
.site-header.scrolled .main-nav a {
  color: var(--color-navy);
}

.site-header.scrolled .main-nav a:hover {
  color: var(--color-navy);
  text-decoration-color: var(--color-navy);
}

.site-header.scrolled .main-nav a.active {
  color: var(--color-navy);
  text-decoration-color: var(--color-pink);
}

/* Boutons dans le header (dark mode + hamburger) */
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Bouton dark mode */
.dark-toggle {
  background: var(--color-on-dark-20);
  border: none;
  color: var(--color-white);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), color var(--transition);
}

.dark-toggle:hover {
  background: var(--color-on-dark-35);
}

/* Bouton dark mode sur fond blanc (header scrollé en mode clair) */
.site-header.scrolled .dark-toggle {
  background: var(--color-bg-light);
  color: var(--color-navy);
}

.site-header.scrolled .dark-toggle:hover {
  background: var(--color-border);
}

/* Icônes du toggle */
.toggle-icon {
  display: none;
  width: 20px;
  height: 20px;
  background-color: currentColor;
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
}

.icon-sun {
  -webkit-mask-image: url('../media/icons/sun.svg');
  mask-image: url('../media/icons/sun.svg');
}

.icon-moon {
  -webkit-mask-image: url('../media/icons/moon.svg');
  mask-image: url('../media/icons/moon.svg');
}

/* Mode clair : afficher la lune */
[data-theme="light"] .dark-toggle .icon-moon { display: block; }

/* Mode sombre : afficher le soleil */
[data-theme="dark"] .dark-toggle .icon-sun { display: block; }

/* === MENU HAMBURGER (mobile) === */

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* Animation hamburger -> croix */
.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Menu mobile déroulant */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--color-navy-dark);
  z-index: 99;
  padding: 16px 0;
  box-shadow: 0 8px 24px var(--color-shadow-modal);
}

.mobile-nav.open {
  display: block;
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
}

.mobile-nav a {
  display: block;
  padding: 14px 24px;
  color: var(--color-on-dark-90);
  font-weight: 800;
  font-size: 1rem;
  border-left: 3px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

.mobile-nav a:hover,
.mobile-nav a.active {
  border-left-color: var(--color-pink);
  background: var(--color-on-dark-06);
  color: var(--color-white);
}

/* === FOOTER === */

.site-footer {
  background: var(--color-navy-dark);
  color: var(--color-on-dark-75);
  padding-top: 56px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 48px;
}

.footer-col h3 {
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.footer-col p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 0;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col a {
  color: var(--color-on-dark-70);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--color-pink);
}

/* Icônes réseaux sociaux */
.social-links {
  display: flex;
  gap: 12px;
  margin-top: 4px;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-on-dark-10);
  color: var(--color-on-dark-75);
  transition: background var(--transition), color var(--transition);
}

.social-link:hover {
  background: var(--color-pink);
  color: var(--color-white);
}

.social-link img {
  width: 16px;
  height: 16px;
  /* Rend le SVG blanc sur fond sombre (standard pour icones monochromes) */
  filter: brightness(0) invert(1);
}

/* Barre du bas */
.footer-bottom {
  border-top: 1px solid var(--color-on-dark-10);
  padding: 20px 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-on-dark-50);
}

.footer-bottom a {
  color: var(--color-pink);
}

.footer-bottom a:hover {
  color: var(--color-pink-light);
}

/* === BANNIERE PAGES INTERIEURES === */

.page-banner {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-grad) 100%);
  color: var(--color-white);
  padding: 56px 0;
  position: relative;
  overflow: hidden;
}

/* Décoration géométrique */
.page-banner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 300px;
  height: 300px;
  background: var(--color-on-dark-04);
  border-radius: 50%;
}

.page-banner::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: 10%;
  width: 180px;
  height: 180px;
  background: var(--color-orange-glow);
  border-radius: 50%;
}

.page-banner h1 {
  color: var(--color-white);
  font-size: 2.4rem;
  margin-bottom: 8px;
}

.page-banner p {
  color: var(--color-on-dark-75);
  font-size: 1.05rem;
  margin-bottom: 0;
}

/* === BOUTON RETOUR EN HAUT === */

.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--color-pink);
  color: var(--color-white);
  border: none;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px var(--color-pink-light);
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  z-index: 200;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.back-to-top:hover {
  background: var(--color-pink-light);
}

/* === RESPONSIVE === */

@media (max-width: 1024px) {
  .site-title {
    display: none;
  }

  .main-nav a {
    padding: 8px 10px;
    font-size: 0.82rem;
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .page-banner h1 {
    font-size: 1.8rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}