/* Header Styles */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  padding-block: var(--space-4);
  background-color: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(64, 64, 64, 0.5);
  transition: padding var(--transition-normal);
}

.brand-logo {
  font-family: var(--font-display);
  font-size: var(--size-text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-main);
  z-index: 1002;
}

.nav-menu {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: var(--size-text-sm);
  color: var(--color-text-main);
  position: relative;
  padding-block: var(--space-2);
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  transition: width var(--transition-fast);
}

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

.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--color-text-main);
  font-size: var(--size-text-xl);
  cursor: pointer;
  z-index: 1002;
  padding: var(--space-2);
}

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

  .nav-menu {
    position: fixed;
    inset: 0;
    background-color: var(--color-background);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    z-index: 1001;
  }

  .nav-menu.is-open {
    transform: translateX(0);
    box-shadow: -5px 0 20px rgba(0,0,0,0.5);
    top: 220px;
    height: 100%;
  }

  .nav-list {
    flex-direction: column;
    gap: var(--space-8);
    text-align: center;
    background: #000;
        width: 100%;
  }

  .nav-link {
    font-size: var(--size-text-lg);
    font-family: var(--font-display);
  }
  
  /* Prevent scrolling when menu is open */
  body.menu-open {
    overflow: hidden;
  }
}