/* Responsive Styles */

@media (max-width: 1024px) {
  .about-content {
    flex-direction: column;
  }

  .about-image {
    order: -1;
  }
}

@media (max-width: 900px) {
  .nav-links,
  .auth-buttons {
    display: none;
  }

  .mobile-menu-btn {
    display: block;
  }

  .mobile-menu {
    display: block;
  }

  .hero h2 {
    font-size: 36px;
  }

  .search-container {
    flex-direction: column;
  }

  .search-container input {
    border-radius: var(--border-radius);
    margin-bottom: 10px;
  }

  .search-container button {
    border-radius: var(--border-radius);
  }

  .section-header {
    flex-direction: column;
    gap: 15px;
    align-items: flex-start;
  }

  .list-view .paper-card {
    flex-direction: column;
  }

  .list-view .paper-image {
    width: 100%;
  }

  .newsletter-form {
    flex-direction: column;
  }

  .newsletter-form button {
    width: 100%;
  }
}

@media (max-width: 600px) {
  .hero {
    padding: 60px 0;
  }

  .hero h2 {
    font-size: 28px;
  }

  .hero p {
    font-size: 16px;
  }

  .papers-section,
  .categories-section,
  .about-section {
    padding: 60px 0;
  }

  .section-header h2,
  .categories-section h2,
  .about-text h2,
  .newsletter-content h2 {
    font-size: 24px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-number {
    font-size: 36px;
  }

  .stat-label {
    font-size: 16px;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }

  .paper-details-actions {
    flex-direction: column;
  }

  .paper-details-actions .btn {
    width: 100%;
  }
}

@media (max-width: 400px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .quick-filters {
    flex-direction: column;
    align-items: center;
  }

  .filter-btn {
    width: 100%;
  }
}