:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --text-color: #333;
    --light-bg: #f8f9fa;
    --dark-bg: #2c3e50;
  }
  
  body {
    font-family: 'Roboto', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
  }
  
  .navbar {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  }
  
  .navbar-brand {
    font-weight: 700;
    color: var(--primary-color) !important;
  }
  
  .nav-link {
    font-weight: 500;
    color: var(--secondary-color) !important;
    transition: color 0.3s ease;
  }
  
  .nav-link:hover {
    color: var(--primary-color) !important;
  }
  
  .hero {
    background-color: var(--light-bg);
    padding: 4rem 0;
    margin-bottom: 2rem;
  }
  
  .hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
  }
  
  .card {
    border: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: 2rem;
  }
  
  .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  }
  
  .card-title {
    font-weight: 600;
    color: var(--secondary-color);
  }
  
  .card-text {
    color: #666;
  }
  
  .btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    transition: background-color 0.3s ease;
  }
  
  .btn-primary:hover {
    background-color: #2980b9;
    border-color: #2980b9;
  }
  
  .blog-content {
    font-size: 1.1rem;
    line-height: 1.8;
    max-width: 900px;
    margin: 0 auto;
  }
  
  .blog-content h2 {
    color: var(--secondary-color);
    margin-top: 2rem;
  }
  
  footer {
    background-color: var(--dark-bg);
    color: #fff;
    padding: 2rem 0;
  }
  
  footer a {
    color: #fff !important;
    transition: color 0.3s ease;
  }
  
  footer a:hover {
    color: var(--primary-color) !important;
    text-decoration: none;
  }
  
  .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
  }

  /* pagination color */
  .pagination .page-link {
    color: var(--primary-color); /* Text color for pagination links */
    background-color: var(--light-bg); /* Background color for pagination links */
    border-color: var(--primary-color); /* Border color for pagination links */
  }
  
  .pagination .page-link:hover {
    color: var(--light-bg); /* Text color on hover */
    background-color: var(--primary-color); /* Background color on hover */
    border-color: var(--primary-color); /* Border color on hover */
  }
  
  .pagination .active .page-link {
    color: var(--light-bg); /* Text color for active pagination */
    background-color: var(--primary-color); /* Background color for active pagination */
    border-color: var(--primary-color); /* Border color for active pagination */
  }
  
  .pagination .disabled .page-link {
    color: var(--text-color); /* Text color for disabled pagination */
    background-color: var(--light-bg); /* Background color for disabled pagination */
    border-color: var(--light-bg); /* Border color for disabled pagination */
  }
  

/* md */
.post-content h3, h4, h5 {
    font-size: 1.1rem;
}

.post-content table {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;

    border-collapse: collapse;
    margin: 25px 0;
    font-size: 0.9em;
    font-family: sans-serif;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.15);
}

.post-content thead tr {
    background-color: #777;
    color: #ffffff;
    text-align: left;
}

.post-content th,
.post-content td {
    padding: 12px 15px;
}

.post-content tbody tr {
    border-bottom: 1px solid #dddddd;
}

.post-content tbody tr:nth-of-type(even) {
    background-color: #f3f3f3;
}

.post-content tbody tr:last-of-type {
    border-bottom: 2px solid #777;
}