/* =====================================================================
   KAGNARD — header.css
   Header sticky glassmorphism, dropdowns, menu burger mobile.
   ===================================================================== */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

/* Glassmorphism translucide au départ — appliqué via ::before (et non
   directement sur .site-header) car "backdrop-filter"/"filter" sur un
   ancêtre transforme celui-ci en containing block pour ses descendants
   position:fixed. Le panneau mobile (.site-nav) est fixed en enfant du
   header : s'il hérite ce containing block, son inset (calé sur le
   viewport) se retrouve calculé par rapport à la petite boîte du header
   et s'écrase à hauteur nulle → menu "masqué". En isolant le flou dans
   un pseudo-élément (qui n'est pas un ancêtre de .site-nav), le panneau
   mobile reste positionné correctement par rapport au viewport. */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(255, 255, 255, 0.4);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  transition: background 0.35s var(--ease);
}

/* Devient opaque au scroll (classe ajoutée en JS) */
.site-header.is-scrolled {
  box-shadow: var(--shadow-1);
  border-bottom-color: var(--gris-bord);
}
.site-header.is-scrolled::before {
  background: rgba(255, 255, 255, 0.86);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  width: min(100% - 2.5rem, var(--container));
}

/* ---------- Logo ---------- */
.site-header__logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}
.site-header__logo img {
  display: block;
  height: 36px;
  width: auto;
}
.logo-fallback {
  display: none; /* affiché seulement si logo.png absent (onerror) */
  align-items: center;
  gap: 2px;
  font-family: var(--font-titre);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: 0.02em;
  color: var(--noir);
}
.logo-fallback__bar {
  width: 10px;
  height: 22px;
  background: var(--orange); /* rappel barre + accent chaud */
  border-radius: 2px;
  margin-left: 2px;
}

/* ---------- Navigation ---------- */
.site-nav__list {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.55rem 0.85rem;
  font-weight: 500;
  font-size: 0.98rem;
  border-radius: 999px;
  color: var(--noir);
  white-space: nowrap;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.site-nav__link:hover {
  background: var(--orange-soft);
  color: var(--orange);
}
.site-nav__link svg {
  transition: transform 0.25s var(--ease);
}

/* ---------- Dropdowns ---------- */
.site-nav__item.has-dropdown {
  position: relative;
}
.dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 250px;
  padding: 0.5rem;
  background: var(--blanc);
  border: 1px solid var(--gris-bord);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px) scale(0.98);
  transform-origin: top left;
  transition: opacity 0.28s var(--ease-out), transform 0.28s var(--ease-out),
    visibility 0.28s;
}
.site-nav__item.has-dropdown:hover .dropdown,
.site-nav__item.has-dropdown:focus-within .dropdown,
.dropdown.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}
.site-nav__item.has-dropdown:hover .site-nav__toggle svg,
.site-nav__item.has-dropdown:focus-within .site-nav__toggle svg {
  transform: rotate(180deg);
}
.dropdown a {
  display: block;
  padding: 0.7rem 0.9rem;
  border-radius: 10px;
  font-size: 0.95rem;
  color: var(--gris-texte);
  transition: background 0.2s var(--ease), color 0.2s var(--ease), padding-left 0.2s var(--ease);
}
.dropdown a:hover {
  background: var(--bleu-soft);
  color: var(--noir);
  padding-left: 1.1rem;
}

/* ---------- Actions droite ---------- */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}
.site-header__phone {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--noir);
  transition: color 0.2s var(--ease);
}
.site-header__phone svg { color: var(--orange); }
.site-header__phone:hover { color: var(--orange-fonce); }

/* ---------- Burger ---------- */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--noir);
}
.burger span {
  display: block;
  width: 22px;
  height: 2px;
  margin-inline: auto;
  background: var(--blanc);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
}
.burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Barre CTA sticky (mobile/tablette) ----------
   Téléphone + devis toujours accessibles en 1 geste. N'apparaît qu'après
   un léger scroll (classe .is-visible ajoutée en JS, cf. main.js), pour
   ne jamais gêner l'arrivée cinématographique sur le hero. */
.sticky-cta {
  position: fixed;
  inset: auto 0 0 0;
  z-index: 900;
  display: none;
  gap: 0.6rem;
  padding: 0.65rem 1rem calc(0.65rem + env(safe-area-inset-bottom, 0px));
  background: rgba(var(--marine-rgb), 0.94); /* aligné sur --marine (alignement identité logo) */
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-top: 1px solid var(--encre-border);
  box-shadow: 0 -14px 34px rgba(14, 14, 14, 0.22);
  transform: translateY(100%);
  visibility: hidden;
  pointer-events: none;
  transition: transform 0.4s var(--ease);
}
.sticky-cta.is-visible {
  transform: translateY(0);
  visibility: visible;
  pointer-events: auto;
}
.sticky-cta__btn {
  flex: 1 1 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1rem;
  border-radius: 999px;
  font-family: var(--font-titre);
  font-weight: 700;
  font-size: 0.94rem;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease);
}
.sticky-cta__btn:active { transform: scale(0.96); }
.sticky-cta__btn--call {
  background: rgba(255, 255, 255, 0.1);
  color: var(--texte-sur-encre);
  border: 1.5px solid rgba(255, 255, 255, 0.28);
}
.sticky-cta__btn--call:hover { background: rgba(255, 255, 255, 0.16); }
.sticky-cta__btn--devis {
  background: var(--orange);
  color: var(--blanc);
  box-shadow: var(--shadow-orange);
}
.sticky-cta__btn--devis:hover { background: var(--orange-deep); }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .site-header__phone span { display: none; }
}

@media (max-width: 900px) {
  .burger { display: flex; }
  .site-header__cta { display: none; }
  .site-header__logo img { height: 30px; }
  .sticky-cta { display: flex; }
  /* Réserve l'espace en bas pour ne jamais recouvrir le contenu/footer */
  body { padding-bottom: calc(66px + env(safe-area-inset-bottom, 0px)); }

  /* Le menu devient un panneau plein écran */
  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: rgba(255, 255, 255, 0.97);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    padding: 1.5rem 1.5rem 3rem;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform 0.4s var(--ease);
    visibility: hidden;
  }
  .site-nav.is-open {
    transform: translateX(0);
    visibility: visible;
  }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
  }
  .site-nav__link {
    justify-content: space-between;
    padding: 1rem 1rem;
    font-size: 1.15rem;
    border-radius: var(--radius-sm);
    width: 100%;
  }
  .site-nav__toggle { width: 100%; }

  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    border-left: 3px solid var(--orange-soft);
    border-radius: 0;
    margin: 0 0 0.5rem 0.75rem;
    max-height: 0;
    overflow: hidden;
    padding: 0;
    transition: max-height 0.3s var(--ease);
  }
  .dropdown.is-open {
    max-height: 400px;
    padding: 0.25rem 0;
  }

  /* CTA + tel en bas du panneau mobile */
  .site-nav__list::after {
    content: "";
  }
}