/* =========================================
   Global Header
   ========================================= */

.site-header {
  background-color: var(--color-secondary);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: all var(--transition-normal);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo img {
  height: 40px;
}

/* Desktop Navigation */
.main-nav ul {
  display: flex;
  list-style: none;
  gap: var(--space-xl);
}

.main-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.header-actions {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.icon-btn {
  font-size: 1.25rem;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.icon-btn:hover {
  color: var(--color-accent);
  background-color: var(--color-background);
}

.mobile-menu-btn {
  display: none; /* Hidden on desktop */
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .mobile-menu-btn {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background-color: var(--color-secondary);
    transition: left var(--transition-normal);
    overflow-y: auto;
    z-index: 99;
  }

  .main-nav.is-open {
    left: 0;
  }

  .main-nav ul {
    flex-direction: column;
    padding: var(--space-xl);
    gap: var(--space-lg);
  }
  
  .main-nav a {
    font-size: 1.2rem;
  }
}