/* ========================
   CONTAINER
======================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ========================
   HEADER
======================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: box-shadow var(--transition-normal);
}

.header--scrolled {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* ========================
   NAVIGATION
======================== */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
  width: 100%;
  position: relative;
}

/* Logo */
.nav__logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
  letter-spacing: -0.02em;
}

.nav__logo:hover {
  color: var(--color-accent);
}

/* Liste de navigation */
.nav__list {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav__link {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  color: var(--color-secondary);
  text-decoration: none;
  position: relative;
  transition: color var(--transition-fast);
}

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

/* Soulignement animé */
.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-normal);
}

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

.nav__link--active {
  color: var(--color-primary);
}

/* Bouton de changement de langue */
.nav__lang-btn {
  background-color: var(--color-accent);
  color: white;
  border: none;
  border-radius: 6px;
  padding: 0.5rem 1rem;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.nav__lang-btn:hover {
  background-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.nav__lang-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Menu burger */
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  position: relative;
  z-index: 10;
}

.nav__burger-line {
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  transition: all var(--transition-normal);
  transform-origin: center;
}

.nav__burger--active .nav__burger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__burger--active .nav__burger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav__burger--active .nav__burger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}