/* ============================================================
   ODYSSÉE LOISIRS — HEADER & NAVIGATION
   ============================================================ */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-sticky);
  padding: 1rem 0;
  transition: all var(--transition-slow);
}

.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(9,32,82,.6) 0%, transparent 100%);
  opacity: 1;
  transition: opacity var(--transition-slow);
  pointer-events: none;
}

.site-header.is-scrolled {
  padding: 0.625rem 0;
  background: var(--color-navy);
  backdrop-filter: blur(20px) saturate(1.6);
  -webkit-backdrop-filter: blur(20px) saturate(1.6);
  box-shadow: 0 1px 0 rgba(255,255,255,.06), var(--shadow-md);
}

.site-header.is-scrolled::before { opacity: 0; }

.site-header.is-page {
  background: var(--color-navy);
  padding: 0.625rem 0;
}
.site-header.is-page::before { opacity: 0; }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  position: relative;
  z-index: 1;
}

/* ── LOGO ────────────────────────────────────────────────── */
.header-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  line-height: 0;
}

.header-logo img {
  height: 64px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: .95;
  transition: opacity var(--transition-fast);
}

.header-logo:hover img { opacity: .72; }

/* ── NAV ─────────────────────────────────────────────────── */
.header-nav {
  display: flex;
  align-items: center;
  flex: 1;
  justify-content: center;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.7rem;
  font-size: 0.8rem;
  font-weight: var(--weight-medium);
  color: rgba(255,255,255,.78);
  white-space: nowrap;
  transition: color var(--transition-fast);
  letter-spacing: 0.01em;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: calc(100% - 1.4rem);
  height: 2px;
  background: var(--color-orange);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base);
  transform-origin: center;
}

.nav-link:hover { color: var(--color-white); }
.nav-link:hover::after,
.nav-link.is-active::after { transform: translateX(-50%) scaleX(1); }
.nav-link.is-active { color: var(--color-white); }

/* ── CTA ─────────────────────────────────────────────────── */
.header-cta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.btn-reserver {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.55rem 1.2rem;
  background: var(--color-navy);
  color: var(--color-white);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: var(--weight-bold);
  letter-spacing: 0.01em;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
  white-space: nowrap;
}

.btn-reserver:hover {
  background: var(--color-navy-mid);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-reserver svg {
  width: 12px; height: 12px;
  transition: transform var(--transition-fast);
}

.btn-reserver:hover svg { transform: translateX(2px); }

/* ── HAMBURGER ───────────────────────────────────────────── */
.hamburger {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.hamburger:hover { background: rgba(255,255,255,.1); }

.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-white);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  transform-origin: center;
}

.hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── MOBILE NAV ──────────────────────────────────────────── */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-sticky) - 1);
  background: var(--color-navy);
  padding-top: 80px;
  padding-inline: var(--gutter);
  padding-bottom: var(--space-8);
  flex-direction: column;
  gap: var(--space-1);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--transition-spring);
}

.mobile-nav.is-open { transform: translateX(0); }

.mobile-nav-link {
  display: flex;
  align-items: center;
  padding: 0.875rem var(--space-4);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: rgba(255,255,255,.78);
  border-radius: var(--radius-lg);
  border-bottom: 1px solid rgba(255,255,255,.05);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover {
  background: rgba(255,255,255,.06);
  color: var(--color-white);
  padding-left: var(--space-6);
}

.mobile-nav__cta {
  margin-top: auto;
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,.1);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.mobile-nav__cta .btn {
  width: 100%;
  justify-content: center;
  font-size: var(--text-base);
}

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 1100px) {
  .header-nav { display: none; }
  .hamburger  { display: flex; }
  .mobile-nav { display: flex; }
}

@media (max-width: 640px) {
  .header-logo img { height: 48px; }
}