/* ============================================================
   Site header — fixed top, white background
   Pixel-perfect rebrand (Phase 2) — matches colisbridge.fr live
   ============================================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: var(--color-white);
  z-index: var(--z-header);
  transition: box-shadow var(--transition-base);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-md);
}

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

/* ---------- Logo ---------- */
.site-header__logo {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
}

.site-header__logo-img {
  width: 151px;
  height: 55px;
  display: block;
}

/* Color logo shown by default; white logo only on the home hero (below) */
.site-header__logo-img--white {
  display: none;
}

/* ---------- Desktop nav ---------- */
.site-header__nav {
  display: flex;
  align-items: center;
}

.site-header__menu {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-header__link {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--font-size-lg); /* 20px */
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-nav); /* 1.2px */
  color: var(--color-navy);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.site-header__link:hover,
.site-header__link:focus-visible,
.site-header__link.is-active {
  color: var(--color-pink);
}

/* ---------- Transparent header over the hero/banner, solid on scroll ----------
   The live site uses a transparent header with a white logo + white nav on
   every page (home hero + internal page banners), turning solid white on
   scroll. All pages have a dark hero/banner behind the header. */
.site-header:not(.is-scrolled) {
  background-color: transparent;
}

.site-header:not(.is-scrolled) .site-header__logo-img--color {
  display: none;
}

.site-header:not(.is-scrolled) .site-header__logo-img--white {
  display: block;
}

.site-header:not(.is-scrolled) .site-header__link,
.site-header:not(.is-scrolled) .site-header__link.is-active {
  color: var(--color-white);
}

.site-header:not(.is-scrolled) .site-header__link:hover,
.site-header:not(.is-scrolled) .site-header__link:focus-visible {
  color: rgba(255, 255, 255, 0.75);
}

.site-header:not(.is-scrolled) .site-header__toggle-icon {
  stroke: var(--color-white);
}

/* ---------- Desktop CTA buttons ---------- */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-header__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 20px;
  font-family: var(--font-heading);
  font-size: var(--font-size-base); /* 16px */
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  color: var(--color-white);
  border-radius: var(--radius-sm); /* 5px */
  text-decoration: none;
  transition: opacity var(--transition-fast);
  white-space: nowrap;
  line-height: 1;
}

.site-header__cta:hover,
.site-header__cta:focus-visible {
  opacity: 0.9;
  color: var(--color-white);
}

.site-header__cta--whatsapp {
  background-color: var(--color-whatsapp);
}

.site-header__cta--call {
  background-color: var(--color-pink);
}

.site-header__cta-icon {
  flex-shrink: 0;
}

/* ---------- Mobile hamburger toggle ---------- */
.site-header__toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.site-header__toggle-icon {
  display: block;
}

.site-header__toggle-icon--close {
  display: none;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon--bars {
  display: none;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon--close {
  display: block;
}

/* ---------- Mobile dropdown ---------- */
.site-header__mobile {
  position: absolute;
  top: var(--header-height);
  left: 0;
  width: 100%;
  background-color: var(--color-white);
  box-shadow: var(--shadow-lg);
}

.site-header__mobile[hidden] {
  display: none;
}

.site-header__mobile-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg) var(--container-padding);
}

.site-header__mobile-menu {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
}

.site-header__mobile-link {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 1.125rem; /* 18px (mobile) */
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-nav);
  color: var(--color-navy);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.site-header__mobile-link:hover,
.site-header__mobile-link:focus-visible,
.site-header__mobile-link.is-active {
  color: var(--color-pink);
}

.site-header__mobile-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-top: var(--space-sm);
}

/* ---------- Responsive — switch to mobile under 768px ---------- */
@media (max-width: 767px) {
  .site-header__nav,
  .site-header__actions {
    display: none;
  }

  .site-header__toggle {
    display: inline-flex;
  }
}

@media (min-width: 768px) {
  .site-header__mobile {
    display: none;
  }
}