/* ==========================================================================
   Header — logo, navigation principale, téléphone
   ========================================================================== */

/* Header épinglé en haut de l'écran */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--c-white);
  box-shadow: var(--shadow-header);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 36px;
  height: var(--header-h);
}

/* Logo ------------------------------------------------------------------- */
.brand {
  display: block;
  flex-shrink: 0;
}
.brand__logo { width: auto; height: 60px; }

/* Navigation ------------------------------------------------------------- */
/* Menu d'ancres vers les écrans de la landing ; .is-active posé au défilement (js/main.js) */
.main-nav { flex: 1; }
.main-nav__list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(20px, 3vw, 52px);
}

.main-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 12px 0;
  font-size: var(--fs-nav);
  font-weight: var(--fw-medium);
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--c-navy);
  transition: color var(--transition);
}
.main-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  border-radius: 2px;
  background: var(--c-red);
  transform: scaleX(0);
  transition: transform var(--transition);
}
.main-nav__link:hover,
.main-nav__link.is-active { color: var(--c-red); }
.main-nav__link:hover::after,
.main-nav__link.is-active::after { transform: scaleX(1); }

/* Téléphone -------------------------------------------------------------- */
.header-phone {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  font-size: 1.375rem;
  font-weight: var(--fw-medium);
  color: var(--c-red);
  white-space: nowrap;
}
.header-phone svg { width: 26px; height: 26px; }
.header-phone:hover { color: var(--c-red-dark); }

/* Burger (affiché sous 1100 px, voir responsive.css) ---------------------- */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  border: 0;
  border-radius: var(--radius-sm);
  background: none;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2.5px;
  border-radius: 2px;
  background: var(--c-navy);
  transition: transform var(--transition), opacity var(--transition);
}
.site-header.is-menu-open .nav-toggle span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.site-header.is-menu-open .nav-toggle span:nth-child(2) { opacity: 0; }
.site-header.is-menu-open .nav-toggle span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }