@media (max-width: 768px) {
  header {
    position: relative;
  }
  
  .header-inner {
    flex-direction: column;
    align-items: center;
    gap: 15px;
  }
  
  .logo img {
    width: 80px;
    height: auto;
  }
  
  nav {
    width: 100%;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
  }
  
  nav a {
    font-size: 14px;
  }
  
  .hero h1 {
    font-size: 36px;
  }
  
  .hero h2 {
    font-size: 24px;
  }
  
  .section-title {
    font-size: 28px;
  }
  
  .event-card {
    padding: 25px 20px;
  }
  
  .event-card h3 {
    font-size: 22px;
  }
  
  .club-info h3 {
    font-size: 20px;
  }
  
  .club-time {
    font-size: 14px;
  }
  
  .map-wrapper iframe {
    height: 350px;
  }
  
  .map-address {
    font-size: 16px;
  }
  
  .lightbox-arrow {
    width: 40px;
    height: 40px;
    font-size: 22px;
  }
  
  .lightbox-prev { left: 8px; }
  .lightbox-next { right: 8px; }
}