/* ==========================================================================
   HEADER.CSS — En-tête et navigation
   ========================================================================== */

#header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  backdrop-filter: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-medium), background var(--transition-medium), backdrop-filter var(--transition-medium);
}

#header.is-scrolled {
  border-bottom-color: var(--color-border);
  background: var(--black);
  backdrop-filter: blur(10px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1.1rem;
  padding-inline: var(--spacing-lg);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.nav__logo img {
  height: 72px;
  width: 72px;
  border-radius: 50%;
}

.nav__logo-text {
  font-family: var(--font-label);
  letter-spacing: 0.1em;
  font-size: 0.75rem;
  color: var(--cream-dim);
  line-height: 1.35;
}

.nav__logo-text strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--cream);
  letter-spacing: 0.03em;
}

.nav__logo-o {
  color: var(--color-primary);
}

.nav__right {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-family: var(--font-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.82rem;
  font-weight: 400;
}

.nav__links a {
  color: var(--cream-dim);
  transition: color var(--transition-fast);
  position: relative;
}

.nav__links a:hover {
  color: var(--cream);
}

.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 1px;
  background: var(--color-primary);
  transition: width var(--transition-fast);
}

.nav__links a:hover::after {
  width: 100%;
}

.nav__reserve-link {
  font-family: var(--font-label);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.82rem;
  color: var(--cream);
  position: relative;
}

.nav__reserve-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 1px;
  background: var(--color-primary);
  transition: width var(--transition-fast);
}

.nav__reserve-link:hover::after {
  width: 100%;
}

.nav__lang {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-label);
  letter-spacing: 0.08em;
  font-size: 0.78rem;
}

.nav__lang button {
  color: var(--cream-dim);
  transition: color var(--transition-fast);
}

.nav__lang button.is-active {
  color: var(--color-primary);
}

.nav__lang button:hover {
  color: var(--cream);
}

.nav__lang-sep {
  color: var(--cream-dim);
  opacity: 0.5;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.4rem;
  position: relative;
}

.nav__toggle span {
  width: 24px;
  height: 2px;
  background: var(--cream);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav__mobile-panel {
  display: none;
  flex-direction: column;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: rgba(21, 21, 23, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--color-border);
  font-family: var(--font-label);
  letter-spacing: 0.06em;
}

.nav__mobile-panel a:not(.btn) {
  color: var(--cream);
  padding-block: 0.4rem;
  display: inline-block;
  width: fit-content;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 0.2em;
  transition: text-decoration-color var(--transition-fast), transform var(--transition-fast), color var(--transition-fast);
}

.nav__mobile-panel a:not(.btn):hover,
.nav__mobile-panel a:not(.btn):active {
  color: var(--color-primary);
  text-decoration-color: currentColor;
  transform: scale(1.05);
}

.nav__mobile-panel.is-open {
  display: flex;
}