/* ==========================================================================
   Align'&Vous — Header, footer, mise en page générale
   ========================================================================== */

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(253, 247, 252, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-base);
}

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

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-top: var(--space-sm);
  padding-bottom: var(--space-sm);
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-plum-900);
}

.site-header__brand img {
  height: 44px;
  width: auto;
  border-radius: 50%;
}

.site-header__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.site-header__brand-name {
  font-family: var(--font-title);
  font-size: var(--fs-md);
}

.site-header__brand-name sup {
  font-size: 0.55em;
}

.site-header__brand-sub {
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 500;
  color: var(--color-ink-600);
}

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

.site-nav__list {
  display: flex;
  gap: var(--space-md);
}

.site-nav__link {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-ink-600);
  padding: var(--space-2xs) var(--space-2xs);
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--color-brand-600);
  border-color: var(--color-brand-400);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: var(--space-xs);
}

.nav-toggle__bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-plum-900);
  margin: 5px 0;
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(4) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Footer --- */
.site-footer {
  background: var(--color-plum-900);
  color: var(--color-lilac-300);
  padding: var(--space-2xl) 0 var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-grid h4 {
  color: var(--color-white);
  font-family: var(--font-title);
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.footer-grid a {
  display: block;
  color: var(--color-lilac-300);
  opacity: 0.9;
  font-size: var(--fs-sm);
  padding: var(--space-2xs) 0;
  transition: opacity var(--transition-fast);
}

.footer-grid a:hover {
  opacity: 1;
  text-decoration: underline;
}

.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  padding-top: var(--space-md);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: space-between;
  font-size: var(--fs-xs);
  opacity: 0.75;
}

/* --- Hero (accueil) --- */
.hero-wrap {
  background: var(--color-lilac-100);
}

.hero {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  text-align: center;
}

.hero__eyebrow {
  font-family: var(--font-title);
  font-style: italic;
  color: var(--color-brand-600);
  font-size: var(--fs-md);
}

.hero__actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--space-md);
}

/* --- Page header générique (pages secondaires) --- */
.page-header {
  padding: var(--space-xl) 0 var(--space-lg);
  text-align: center;
  background: var(--color-lilac-100);
}

/* --- Responsive --- */
@media (max-width: 860px) {
  .site-nav__list {
    position: fixed;
    inset: 64px var(--space-md) auto var(--space-md);
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    padding: var(--space-md);
    gap: var(--space-2xs);
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    visibility: hidden;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  }

  .site-nav__list[data-open="true"] {
    opacity: 1;
    transform: none;
    pointer-events: auto;
    visibility: visible;
  }

  .site-nav__link {
    display: block;
    padding: var(--space-sm);
  }

  .site-nav .btn {
    display: none;
  }

  .nav-toggle {
    display: block;
  }
}

@media (max-width: 600px) {
  h1 { font-size: var(--fs-2xl); }
  h2 { font-size: var(--fs-xl); }
  .section { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }
}