.container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 var(--spacing-md);
  background: var(--color-bg);
  z-index: 100;
  transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

.site-header.is-hidden {
  transform: translateY(-100%);
}

.site-nav ul {
  display: flex;
  gap: var(--spacing-md);
}

.site-nav a {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
}

.site-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0%;
  height: 1px;
  background: var(--color-text);
  transition: width 0.3s ease;
}

.site-nav a:hover::after,
.site-nav a.active::after {
  width: 100%;
}

.site-logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 400;
  letter-spacing: 0.1em;
}

/* Footer */
.site-footer {
  padding: var(--spacing-xl) 0 var(--spacing-md);
  border-top: 1px solid rgba(0,0,0,0.1);
  margin-top: var(--spacing-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.footer-col {
  grid-column: span 3;
}
@media (max-width: 768px) {
  .footer-col {
    grid-column: span 6;
  }
}
@media (max-width: 480px) {
  .footer-col {
    grid-column: span 12;
  }
}

.footer-col h4 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-sm);
}

.footer-col ul li {
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: var(--color-grey);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-grey);
}