/* Header Styles */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-background);
  border-bottom: 1px solid var(--color-gray-200);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.logo {
  display: flex;
  align-items: center;
  font-family: 'Oswald', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-navy);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  transition: color var(--transition-fast);
}

.logo:hover {
  color: var(--color-orange);
}

/* Desktop Navigation */
.main-nav {
  display: none;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav-list a {
  display: block;
  padding: var(--space-2) 0;
  font-family: 'Oswald', sans-serif;
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-navy);
  position: relative;
  transition: color var(--transition-fast);
}

.nav-list a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-orange);
  transition: width var(--transition-base);
}

.nav-list a:hover {
  color: var(--color-orange);
}

.nav-list a:hover::after {
  width: 100%;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.icon-btn,
.mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: none;
  background: transparent;
  color: var(--color-navy);
  font-size: 1.25rem;
  cursor: pointer;
  border-radius: var(--radius-lg);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.icon-btn:hover,
.mobile-toggle:hover {
  background-color: var(--color-surface);
  color: var(--color-orange);
}

.mobile-toggle {
  display: flex;
}

/* Mobile Navigation */
.mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-background);
  border-bottom: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-lg);
  padding: var(--space-4) 0;
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.mobile-nav-list a {
  display: block;
  padding: var(--space-3) 0;
  font-family: 'Oswald', sans-serif;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-navy);
  border-bottom: 1px solid var(--color-gray-100);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.mobile-nav-list a:hover {
  color: var(--color-orange);
  padding-left: var(--space-2);
}

.mobile-nav-list li:last-child a {
  border-bottom: none;
}

/* Responsive */
@media (min-width: 1024px) {
  .mobile-toggle {
    display: none;
  }
  
  .main-nav {
    display: block;
  }
  
  .mobile-nav {
    display: none !important;
  }
}