/* ============================================
   BRAND PARTNERS V4 — Header / Navigation
   Style Sommaire / Index
   ============================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: transparent;
  border-bottom: 1px solid transparent;
  transition: transform var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
}

/* Header compact après le hero (ajouté via JS) */
.header.header--solid {
  background-color: rgba(250, 250, 248, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: var(--border-thin);
}

.header.header--solid .header__inner {
  padding: 0.75rem var(--gutter);
}

.header.header--solid .header__logo img {
  height: 23px;
}

/* En mode compact : cacher les numéros, garder juste les titres sur une ligne */
.header.header--solid .header__nav {
  align-items: center;
}

.header.header--solid .header__nav a {
  flex-direction: row;
  gap: 0;
  position: relative;
}

.header.header--solid .header__nav-num {
  opacity: 0;
  max-height: 0;
}

.header.header--solid .header__nav a strong {
  font-size: 0.92rem;
  font-weight: 400;
  color: var(--color-text-muted);
  transition: color 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.header.header--solid .header__nav a:hover strong {
  color: var(--color-accent-laterite);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 1.25rem var(--gutter);
  transition: padding var(--transition-base);
}

/* Logo horizontal — centré par rapport aux liens à deux lignes */
.header__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  transition: opacity var(--transition-base);
  align-self: center;
}

.header__logo img {
  height: 33px;
  width: auto;
  transition: height var(--transition-base);
}

.header__logo:hover {
  opacity: 0.7;
}

/* Navigation — style sommaire */
.header__nav {
  display: flex;
  align-items: flex-start;
  gap: 3rem;
}

.header__nav a {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.header__nav a:hover {
  color: var(--color-text-primary);
}

/* Numéro — accent latérite */
.header__nav-num {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--color-accent-laterite);
  letter-spacing: 0.05em;
  transition: opacity var(--transition-base), max-height var(--transition-base), color var(--transition-base);
  max-height: 1.5em;
  overflow: hidden;
  opacity: 1;
}

/* Titre du lien — serif éditorial */
.header__nav a strong {
  font-family: var(--font-editorial);
  font-size: 1.3rem;
  font-weight: 400;
  color: #333;
  transition: font-size var(--transition-base), color var(--transition-fast);
}

.header__nav a:hover strong {
  color: #111;
}

/* Pages internes : fond sable par défaut */
.page-internal .header {
  background-color: var(--color-bg-secondary);
  border-bottom: var(--border-thin);
}

.page-internal .header.header--solid {
  background-color: rgba(250, 250, 248, 0.95);
}

/* Pages projet Gradient : header transparent, logo + burger blancs */
.theme-gradient .header {
  background-color: transparent;
  border-bottom: none;
}

.theme-gradient .header .header__logo img {
  filter: brightness(0) invert(1);
}

.theme-gradient .header__menu-toggle span {
  background-color: rgba(250, 250, 248, 0.9) !important;
}

/* Nav links blancs sur fond sombre (desktop) */
.theme-gradient .header__nav a strong {
  color: rgba(250, 250, 248, 0.9);
}

.theme-gradient .header__nav-num {
  color: rgba(250, 250, 248, 0.45);
}

.theme-gradient .header__nav-contact strong {
  color: rgba(250, 250, 248, 0.9);
}

/* Quand on scrolle et que header--solid s'active : retour au mode normal */
.theme-gradient .header.header--solid {
  background-color: rgba(250, 250, 248, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: var(--border-thin);
}

.theme-gradient .header.header--solid .header__logo img {
  filter: none; /* Retour au logo original sombre */
}

.theme-gradient .header.header--solid .header__menu-toggle span {
  background-color: var(--color-text-primary) !important;
}

.theme-gradient .header.header--solid .header__nav a strong {
  color: var(--color-text-muted);
}

.theme-gradient .header.header--solid .header__nav-num {
  color: var(--color-accent-laterite);
}

.theme-gradient .header.header--solid .header__nav-contact strong {
  color: var(--color-accent-laterite);
}

/* Pages Formation Masterclass : header transparent sur hero sombre */
body:has(.fm-hero) .header {
  background-color: transparent;
  border-bottom: none;
}

body:has(.fm-hero) .header .header__logo img {
  filter: brightness(0) invert(1);
}

body:has(.fm-hero) .header__menu-toggle span {
  background-color: rgba(250, 250, 248, 0.9) !important;
}

body:has(.fm-hero) .header__nav a strong {
  color: rgba(250, 250, 248, 0.9);
}

body:has(.fm-hero) .header__nav-num {
  color: rgba(250, 250, 248, 0.45);
}

body:has(.fm-hero) .header__nav-contact strong {
  color: rgba(250, 250, 248, 0.9);
}

body:has(.fm-hero) .header.header--solid {
  background-color: rgba(250, 250, 248, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: var(--border-thin);
}

body:has(.fm-hero) .header.header--solid .header__logo img {
  filter: none;
}

body:has(.fm-hero) .header.header--solid .header__menu-toggle span {
  background-color: var(--color-text-primary) !important;
}

body:has(.fm-hero) .header.header--solid .header__nav a strong {
  color: var(--color-text-muted);
}

body:has(.fm-hero) .header.header--solid .header__nav-num {
  color: var(--color-accent-laterite);
}

body:has(.fm-hero) .header.header--solid .header__nav-contact strong {
  color: var(--color-accent-laterite);
}

/* Pages Article : header transparent sur hero sombre */
body:has(.article-hero--dark) .header {
  background-color: transparent;
  border-bottom: none;
}

body:has(.article-hero--dark) .header .header__logo img {
  filter: brightness(0) invert(1);
}

body:has(.article-hero--dark) .header__menu-toggle span {
  background-color: rgba(250, 250, 248, 0.9) !important;
}

body:has(.article-hero--dark) .header__nav a strong {
  color: rgba(250, 250, 248, 0.9);
}

body:has(.article-hero--dark) .header__nav-num {
  color: rgba(250, 250, 248, 0.45);
}

body:has(.article-hero--dark) .header__nav-contact strong {
  color: rgba(250, 250, 248, 0.9);
}

body:has(.article-hero--dark) .header.header--solid {
  background-color: rgba(250, 250, 248, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: var(--border-thin);
}

body:has(.article-hero--dark) .header.header--solid .header__logo img {
  filter: none;
}

body:has(.article-hero--dark) .header.header--solid .header__menu-toggle span {
  background-color: var(--color-text-primary) !important;
}

body:has(.article-hero--dark) .header.header--solid .header__nav a strong {
  color: var(--color-text-muted);
}

body:has(.article-hero--dark) .header.header--solid .header__nav-num {
  color: var(--color-accent-laterite);
}

body:has(.article-hero--dark) .header.header--solid .header__nav-contact strong {
  color: var(--color-accent-laterite);
}

/* Lien Contact — sans numéro */
.header__nav-contact {
  align-self: center;
}

.header__nav-contact strong {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent-laterite);
  transition: color 0.3s;
}

.header__nav-contact:hover strong {
  color: #111;
}

.header.header--solid .header__nav-contact strong {
  font-size: 0.75rem;
  color: var(--color-accent-laterite);
}

.header.header--solid .header__nav-contact:hover strong {
  color: #111;
}

/* Mobile menu toggle — V4 asymétrique (2 lignes) */
.header__menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 44px;
  height: 44px;
  position: relative;
  -webkit-tap-highlight-color: transparent;
}

.header__menu-toggle span {
  display: block;
  height: 1.5px;
  background-color: var(--color-text-primary);
  position: absolute;
  right: 10px;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.header__menu-toggle span:nth-child(1) { width: 24px; top: 18px; }
.header__menu-toggle span:nth-child(2) { width: 16px; top: 26px; }

/* 3e span caché (HTML peut avoir 3 spans, on n'utilise que 2) */
.header__menu-toggle span:nth-child(3) { display: none; }

.header__menu-toggle.active span:nth-child(1) {
  top: 22px;
  transform: rotate(45deg);
}

.header__menu-toggle.active span:nth-child(2) {
  width: 24px;
  top: 22px;
  transform: rotate(-45deg);
}

/* Responsive */
@media (max-width: 768px) {
  .header__inner {
    align-items: center;
    padding: 1rem var(--gutter);
  }

  .header__logo {
    width: auto;
  }

  .header__menu-toggle {
    display: block;
    position: relative;
    z-index: 10000;
  }

  /* Nav — glassmorphe overlay (V5) */
  .header__nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    height: 100vh;
    height: 100dvh;
    background: #FAFAF8;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    width: 100%;
    gap: 0;
    padding: 5rem var(--space-xl) 1.5rem;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 9999;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .header__nav.active {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  /* Le bouton close est masqué — le burger toggle fait office de × */
  .header__nav-close {
    display: none;
  }

  /* Items — slide-in gauche → droite en cascade */
  .header__nav a {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.15rem;
    min-height: 48px;
    padding: 0.9rem 1rem;
    border-left: none;
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  }

  /* Désactiver le hover sur mobile */
  .header__nav a:hover {
    border-left: none;
    padding-left: 1rem;
    background: none;
  }

  .header__nav.active a {
    opacity: 1;
    transform: translateX(0);
  }

  /* Stagger — cascade progressive */
  .header__nav.active a:nth-of-type(1) { transition-delay: 0.08s; }
  .header__nav.active a:nth-of-type(2) { transition-delay: 0.15s; }
  .header__nav.active a:nth-of-type(3) { transition-delay: 0.22s; }
  .header__nav.active a:nth-of-type(4) { transition-delay: 0.29s; }
  .header__nav.active a:nth-of-type(5) { transition-delay: 0.36s; }

  /* Animation au tap (active/touch) */
  .header__nav a:active {
    transform: scale(0.96);
    transition: transform 0.1s ease;
  }
  .header__nav a:active strong {
    color: var(--color-accent-laterite);
  }
  .header__nav a:active .header__nav-num {
    opacity: 0.6;
  }

  /* Typo — tailles agrandies */
  .header__nav a strong {
    font-family: var(--font-editorial);
    font-size: 1.85rem;
    color: var(--color-text-primary);
  }

  .header__nav-num {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--color-accent-laterite);
    letter-spacing: 0.08em;
    opacity: 1;
    max-height: none;
    min-width: 30px;
  }

  /* ---- Footer section en bas du menu ---- */
  .header__nav-bottom {
    display: block;
    margin-top: auto;
    padding: var(--space-lg) 1rem var(--space-md);
    border-top: 1px solid var(--color-border);
    width: 100%;
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.5s 0.45s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.5s 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .header__nav.active .header__nav-bottom {
    opacity: 1;
    transform: translateX(0);
  }

  .header__nav-bottom__brand {
    font-family: var(--font-editorial);
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--color-text-primary);
    margin-bottom: 0.25rem;
  }

  .header__nav-bottom__tagline {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
    line-height: 1.5;
  }

  .header__nav-bottom__contact {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-bottom: 1rem;
  }

  .header__nav-bottom__contact span {
    font-family: var(--font-body);
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    letter-spacing: 0.02em;
  }

  .header__nav-bottom__copy {
    font-family: var(--font-body);
    font-size: 0.65rem;
    color: var(--color-text-muted);
    letter-spacing: 0.04em;
  }

  /* Ancien footer — masquer */
  .header__nav-footer {
    display: none !important;
  }

  /* Le burger doit rester au-dessus de l'overlay */
  .header {
    z-index: 1000;
  }

  /* Burger sur fond sombre (hero index) */
  .header__menu-toggle span {
    background-color: rgba(250, 250, 248, 0.8);
  }

  /* Burger sur fond clair (apres hero) */
  .header.header--solid .header__menu-toggle span {
    background-color: var(--color-text-primary);
  }

  /* Pages internes : burger sombre dès le départ (fond clair) */
  .page-internal .header__menu-toggle span {
    background-color: var(--color-text-primary);
  }

  /* Quand le menu est ouvert : × doit être sombre (fond clair overlay) */
  .header__menu-toggle.active span {
    background-color: var(--color-text-primary) !important;
  }

  /* Header solid — reset ALL desktop overrides for mobile overlay */
  .header.header--solid .header__nav {
    align-items: flex-start;
  }

  .header.header--solid .header__nav a {
    flex-direction: column;
    gap: 0.15rem;
    position: static;
  }

  .header.header--solid .header__nav a strong {
    color: var(--color-text-primary);
    font-size: 1.85rem;
    font-weight: 400;
  }

  .header.header--solid .header__nav-num {
    opacity: 1;
    max-height: none;
  }
}

/* Cacher close button + nav-bottom sur desktop */
.header__nav-close {
  display: none;
}
.header__nav-bottom {
  display: none;
}

/* Cacher le footer nav sur desktop */
.header__nav-footer {
  display: none;
}