/* Responsive Design for Mobile Devices */

/* Tablet and below */
@media (max-width: 768px) {
  /* Header */
  .nav {
    display: none;
  }
  
  .menu-toggle {
    display: block;
  }
  
  /* Hero Section */
  .hero {
    padding: 4rem 0 2rem;
    margin-top: 60px;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  /* Topics Grid */
  .topics-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  /* Content Wrapper */
  .content-wrapper {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  /* Main Content */
  .main-content {
    padding: 1.5rem;
  }
  
  .main-content h2 {
    font-size: 1.5rem;
  }
  
  .main-content h3 {
    font-size: 1.2rem;
  }
  
  /* Sidebar */
  .sidebar {
    display: none;
  }
  
  /* Tips Container */
  .tips-container {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  /* Buttons */
  .btn {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
  }
}

/* Mobile devices */
@media (max-width: 480px) {
  /* Container */
  .container {
    padding: 0 15px;
  }
  
  /* Header */
  .header-content {
    padding: 0.75rem 0;
  }
  
  .logo h1 {
    font-size: 1.25rem;
  }
  
  /* Hero Section */
  .hero {
    padding: 3rem 0 1.5rem;
    margin-top: 55px;
  }
  
  .hero h1 {
    font-size: 1.75rem;
  }
  
  /* Intro Section */
  .intro {
    padding: 2rem 0;
  }
  
  .intro h3 {
    font-size: 1.25rem;
  }
  
  /* Topics Section */
  .topics {
    padding: 2rem 0;
  }
  
  .topics h3 {
    font-size: 1.5rem;
  }
  
  /* Topic Card */
  .topic-card {
    padding: 1.5rem;
  }
  
  .topic-card h4 {
    font-size: 1.1rem;
  }
  
  .topic-icon {
    font-size: 2rem;
  }
  
  /* Content Section */
  .content {
    padding: 1.5rem 0;
  }
  
  /* Main Content */
  .main-content {
    padding: 1rem;
  }
  
  .main-content h2 {
    font-size: 1.3rem;
  }
  
  .main-content h3 {
    font-size: 1.1rem;
  }
  
  /* Tips Container */
  .tips-container {
    margin: 1.5rem 0;
  }
  
  .tip-card {
    padding: 1.25rem;
  }
  
  /* Footer */
  .footer {
    padding: 1.5rem 0;
  }
  
  .footer-content {
    font-size: 0.8rem;
  }
}

/* Very small devices */
@media (max-width: 360px) {
  /* Hero Section */
  .hero h1 {
    font-size: 1.5rem;
  }
  
  /* Mobile Menu */
  .mobile-nav-link {
    padding: 0.6rem 1.5rem;
    font-size: 0.9rem;
  }
  
  /* Buttons */
  .btn {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
  }
}