/* ── Header ── */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  padding-block: var(--space-md);
  transition:
    background-color var(--duration-base) var(--ease-out-quad),
    padding var(--duration-base) var(--ease-out-quad),
    box-shadow var(--duration-base) var(--ease-out-quad);
}

.header--scrolled {
  background-color: rgba(var(--bleu-profond-rgb), 0.97);
  padding-block: var(--space-xs);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(12px);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.header__logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: var(--fw-black);
  color: var(--blanc-casse);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.header__logo span {
  color: var(--corail);
}

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

.header__nav-list {
  display: flex;
  gap: var(--space-md);
}

.header__nav-link {
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  color: rgba(var(--blanc-casse-rgb), 0.8);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  position: relative;
  padding-block: var(--space-xs);
  transition: color var(--duration-fast) var(--ease-out-quad);
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--corail);
  transition: width var(--duration-base) var(--ease-out-expo);
}

.header__nav-link:hover,
.header__nav-link--active {
  color: var(--blanc-casse);
}

.header__nav-link:hover::after,
.header__nav-link--active::after {
  width: 100%;
}

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.6em 1.4em;
  background: var(--corail);
  color: white;
  font-size: var(--fs-small);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  transition:
    background-color var(--duration-fast) var(--ease-out-quad),
    transform var(--duration-fast) var(--ease-out-quad);
}

.header__cta:hover {
  background: #c13a40;
  color: white;
  transform: translateY(-1px);
}

/* ── Burger ── */

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
  background: none;
  border: none;
  cursor: pointer;
  z-index: calc(var(--z-overlay) + 1);
}

.burger__line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--blanc-casse);
  border-radius: 2px;
  transition:
    transform var(--duration-base) var(--ease-out-expo),
    opacity var(--duration-fast);
}

.burger--open .burger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.burger--open .burger__line:nth-child(2) {
  opacity: 0;
}

.burger--open .burger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile nav overlay ── */

.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(var(--bleu-profond-rgb), 0.98);
  z-index: var(--z-overlay);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-out-quad);
}

.mobile-nav--open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav__link {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: var(--fw-bold);
  color: var(--blanc-casse);
  transition: color var(--duration-fast);
}

.mobile-nav__link:hover {
  color: var(--corail);
}

/* ── Footer ── */

.footer {
  background-color: var(--bleu-profond);
  color: rgba(var(--blanc-casse-rgb), 0.7);
  padding-block: var(--space-2xl) var(--space-lg);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.footer__brand {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: var(--fw-black);
  color: var(--blanc-casse);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.footer__brand span {
  color: var(--corail);
}

.footer__tagline {
  font-size: var(--fs-small);
  line-height: var(--lh-body);
  max-width: 32ch;
}

.footer__heading {
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: var(--fw-semibold);
  color: var(--blanc-casse);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer__link {
  font-size: var(--fs-small);
  transition: color var(--duration-fast);
}

.footer__link:hover {
  color: var(--corail);
}

.footer__social {
  display: flex;
  gap: var(--space-sm);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(var(--blanc-casse-rgb), 0.2);
  border-radius: var(--radius-full);
  transition:
    border-color var(--duration-fast),
    background-color var(--duration-fast);
}

.footer__social-link:hover {
  border-color: var(--corail);
  background: rgba(var(--corail-rgb), 0.1);
  color: var(--corail);
}

.footer__social-link svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.footer__bottom {
  border-top: 1px solid rgba(var(--blanc-casse-rgb), 0.1);
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--fs-xs);
}

.footer__legal-links {
  display: flex;
  gap: var(--space-md);
}