/* ===========================================================
   LAYOUT - Header, footer, navigation, grids
   =========================================================== */

/* === HEADER === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(248, 244, 234, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  z-index: var(--z-header);
  transition: background var(--transition-default),
              box-shadow var(--transition-default),
              border-color var(--transition-default);
}

.header.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  border-bottom-color: var(--border-light);
  box-shadow: var(--shadow-sm);
}

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

.header__logo {
  font-family: var(--font-display);
  text-decoration: none;
  color: var(--text-primary);
  text-align: left;
  line-height: 1;
  flex-shrink: 0;
}

.header__logo-name {
  font-size: 1.35rem;
  font-weight: var(--fw-light);
  letter-spacing: 0.15em;
  display: block;
  text-transform: uppercase;
}

.header__logo-sub {
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--text-accent);
  text-transform: uppercase;
  margin-top: 2px;
  display: block;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.header__nav-link {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: 0.02em;
  position: relative;
  padding: var(--space-2) 0;
  transition: color var(--transition-fast);
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--color-terracotta);
  border-radius: var(--radius-pill);
  transition: width var(--transition-default);
}

.header__nav-link:hover,
.header__nav-link.is-active {
  color: var(--text-accent);
}

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

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: var(--color-terracotta);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  letter-spacing: 0.05em;
  text-decoration: none;
  border-radius: var(--radius-pill);
  transition: all var(--transition-default);
  box-shadow: var(--shadow-sm);
}

.header__cta:hover {
  background: var(--color-terracotta-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* === SÉLECTEUR DE LANGUE (dropdown avec drapeaux) === */
.lang-switcher {
  position: relative;
}

.lang-switcher__current {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-pill);
  background: var(--bg-surface);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-default);
}

.lang-switcher__current:hover {
  border-color: var(--color-terracotta);
}

.lang-switcher__flag {
  font-size: 1.1rem;
  line-height: 1;
}

.lang-switcher__code {
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.lang-switcher__arrow {
  font-size: 0.7rem;
  opacity: 0.6;
  transition: transform var(--transition-default);
}

.lang-switcher.is-open .lang-switcher__arrow {
  transform: rotate(180deg);
}

.lang-switcher__menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 180px;
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-default);
}

.lang-switcher.is-open .lang-switcher__menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-switcher__option {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: transparent;
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  color: var(--text-primary);
  cursor: pointer;
  transition: background var(--transition-fast);
  text-align: left;
}

.lang-switcher__option:hover {
  background: var(--bg-surface-alt);
}

.lang-switcher__option.is-active {
  background: var(--bg-surface-alt);
  color: var(--text-accent);
  font-weight: var(--fw-medium);
}

/* === Menu mobile (hamburger) === */
.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  padding: 0;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-pill);
  transition: all var(--transition-default);
}

.menu-toggle:hover {
  border-color: var(--color-terracotta);
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text-primary);
  border-radius: var(--radius-pill);
  transition: all var(--transition-default);
}

.menu-toggle.is-open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.menu-toggle.is-open span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.is-open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* === FOOTER === */
.footer {
  background: var(--bg-dark);
  color: var(--text-on-dark);
  padding: var(--space-9) 0 var(--space-5);
  margin-top: var(--space-10);
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--color-terracotta);
  border-radius: 0 0 var(--radius-pill) var(--radius-pill);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-7);
  margin-bottom: var(--space-7);
}

.footer__brand {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: var(--fw-light);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
  color: var(--text-on-dark);
}

.footer__tagline {
  font-size: var(--fs-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-terracotta);
  margin-bottom: var(--space-4);
}

.footer__desc {
  font-size: var(--fs-sm);
  line-height: var(--lh-relaxed);
  color: rgba(248, 244, 234, 0.75);
  max-width: 280px;
}

.footer__title {
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-terracotta);
  margin-bottom: var(--space-4);
}

.footer__list li {
  margin-bottom: var(--space-3);
}

.footer__list a {
  color: rgba(248, 244, 234, 0.85);
  font-size: var(--fs-sm);
  transition: color var(--transition-fast);
}

.footer__list a:hover {
  color: var(--color-terracotta);
}

.footer__bottom {
  padding-top: var(--space-5);
  border-top: 1px solid rgba(248, 244, 234, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--fs-xs);
  color: rgba(248, 244, 234, 0.6);
  letter-spacing: 0.05em;
}

.footer__legal {
  display: flex;
  gap: var(--space-5);
}

.footer__legal a {
  color: rgba(248, 244, 234, 0.6);
}

.footer__legal a:hover {
  color: var(--color-terracotta);
}

/* === MAIN === */
.main {
  padding-top: var(--header-height);
  min-height: 100vh;
}

/* === GRID HELPERS === */
.grid {
  display: grid;
  gap: var(--space-5);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .header__nav-link { font-size: 0.8125rem; }
  .header__nav { gap: var(--space-5); }
}

@media (max-width: 968px) {
  .header__nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-page);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-6) var(--space-5);
    gap: var(--space-4);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-default);
    border-bottom: 1px solid var(--border-light);
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
  }

  .header__nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .menu-toggle {
    display: flex;
  }

  .header__nav-link {
    font-size: var(--fs-md);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--border-light);
  }

  .lang-switcher {
    width: 100%;
  }

  .lang-switcher__current {
    width: 100%;
    justify-content: center;
  }

  .lang-switcher__menu {
    left: 0;
    right: 0;
  }

  .header__cta {
    justify-content: center;
    width: 100%;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-3);
    text-align: center;
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .header__logo-name { font-size: 1.1rem; }
  .header__logo-sub  { font-size: 0.55rem; }
  .footer__grid { grid-template-columns: 1fr; }
}