/* ============================================================
   Header Cuestech — variables de design
   Accent violet réservé aux survols de liens et au bouton
   d'action : jamais en aplat de fond.
   ============================================================ */
:root {
  --font-sans: 'Satoshi', 'General Sans', system-ui, -apple-system, sans-serif;

  --color-bg: #f7f3ea;
  --color-bg-scrolled: rgba(247, 243, 234, 0.82);
  --color-text: #1a1b1e;        /* gris très foncé, pas de noir absolu */
  --color-text-muted: #6b6f76;  /* gris moyen, textes secondaires */
  --color-border: #ececec;      /* hairline */
  --color-accent: #6d28d9;
  --color-accent-hover: #5b21b6;
  --color-accent-contrast: #ffffff;

  --header-height: 110px;
  --header-height-scrolled: 94px;
  --header-height-mobile: 64px;

  --transition-fast: 180ms ease;
  --transition-base: 250ms ease;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
}

a { text-decoration: none; color: inherit; }
button { font-family: inherit; background: none; border: none; cursor: pointer; }
ul { list-style: none; margin: 0; padding: 0; }

/* Focus clavier toujours visible, jamais supprimé */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- Header shell ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-base), backdrop-filter var(--transition-base);
}

/* État scroll : fond translucide + flou, bordure fine conservée.
   Pas d'ombre portée — juste le flou fait la séparation visuelle. */
.site-header.is-scrolled {
  background: var(--color-bg-scrolled);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header-inner {
  width: 100%;
  height: var(--header-height);
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 40px;
  transition: height var(--transition-base);
}

.site-header.is-scrolled .header-inner {
  height: var(--header-height-scrolled);
}

/* ---------- Logo ---------- */

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

/* Lockup icône + wordmark fourni par la marque : on le laisse respirer
   à une hauteur discrète, jamais surdimensionné. */
.logo-image {
  display: block;
  height: 80px;
  width: auto;
  transition: height var(--transition-base);
}

/* Au scroll, le logo se réduit avec le header, ancré en haut à gauche */
.site-header.is-scrolled .logo-image {
  height: 74px;
}

/* ---------- Main nav ---------- */

.main-nav {
  flex: 1;
  min-width: 0;
}

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

.nav-item { position: relative; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  transition: color var(--transition-fast);
}

/* Survol = couleur uniquement, pas de fond ni de soulignement animé */
.nav-link:hover,
.nav-link:focus-visible,
.has-dropdown:hover .dropdown-trigger,
.has-dropdown:focus-within .dropdown-trigger {
  color: var(--color-accent);
}

.chevron { transition: transform var(--transition-fast); }
.has-dropdown:hover .chevron,
.has-dropdown:focus-within .chevron {
  transform: rotate(180deg);
}

/* ---------- Mega menu ---------- */
/* Ouverture au survol (CSS pur) : fondu + léger glissement, 200ms max */

.mega-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: 640px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  box-shadow: 0 8px 20px -12px rgba(26, 27, 30, 0.12);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 200ms ease, transform 200ms ease, visibility 200ms ease;
}

.has-dropdown:hover .mega-menu,
.has-dropdown:focus-within .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mega-menu-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 12px;
}

.mega-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px;
  border-radius: 8px;
}

.mega-item-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.mega-item-text { display: flex; flex-direction: column; gap: 2px; }

.mega-item-title {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.mega-item-desc {
  font-size: 13px;
  font-weight: 400;
  color: var(--color-text-muted);
  line-height: 1.4;
}

/* Survol d'un item : couleur seulement, pas d'aplat de fond */
.mega-item:hover .mega-item-title,
.mega-item:focus-visible .mega-item-title {
  color: var(--color-accent);
}

.mega-item:hover .mega-item-icon,
.mega-item:focus-visible .mega-item-icon {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

/* ---------- Right side actions ---------- */

.header-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-shrink: 0;
}

.phone-link {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.phone-link:hover,
.phone-link:focus-visible { color: var(--color-accent); }

/* Bouton d'action unique du header */
.cta-button {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent-contrast);
  background: var(--color-accent);
  border-radius: 8px;
  white-space: nowrap;
  transition: background-color var(--transition-fast);
}

.cta-button:hover,
.cta-button:focus-visible { background: var(--color-accent-hover); }

/* ---------- Mobile toggle (burger) ---------- */

.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.mobile-toggle span {
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.mobile-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Mobile nav panel (plein écran) ---------- */

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height-mobile);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  overflow-y: auto;
  padding: 16px 24px 32px;
  flex-direction: column;
  justify-content: space-between;
}

.mobile-nav.is-open { display: flex; }

.mobile-nav-label {
  margin: 8px 0 4px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
}

.mobile-nav-list--pages {
  margin-top: 8px;
  border-top: 1px solid var(--color-border);
}

.mobile-nav-list li { border-bottom: 1px solid var(--color-border); }
.mobile-nav-list--pages li:first-child { border-top: none; }

.mobile-nav-link {
  display: block;
  padding: 14px 4px;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link:focus-visible { color: var(--color-accent); }

.mobile-nav-footer {
  margin-top: 24px;
  flex-shrink: 0;
}

.mobile-nav-footer .cta-button {
  width: 100%;
  justify-content: center;
  padding: 14px;
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .main-nav,
  .header-actions .cta-button {
    display: none;
  }

  /* Le téléphone reste visible et cliquable à côté du burger */
  .mobile-toggle { display: flex; }

  .header-inner,
  .site-header.is-scrolled .header-inner {
    height: var(--header-height-mobile);
  }

  /* Le header mobile reste compact : le logo n'y suit pas la taille desktop */
  .logo-image,
  .site-header.is-scrolled .logo-image {
    height: 40px;
  }
}

@media (min-width: 901px) {
  .mobile-nav { display: none !important; }
}

/* ---------- Accessibilité : prefers-reduced-motion ---------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}