* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Vazirmatn', sans-serif;
    background: #f5f5f5;
    color: #222;
  }
  
  /* NAV */
  .nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 25px;
    background: white;
    position: sticky;
    top: 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  }
  
  .nav nav a {
    margin: 0 8px;
    text-decoration: none;
    color: #333;
  }
  
  /* BUTTON */
  .btn {
    padding: 8px 14px;
    border-radius: 6px;
    background: #000;
    color: white !important;
  }
  
  .main-btn {
    margin-top: 20px;
    display: inline-block;
  }
  
  /* HERO */
  .hero {
    text-align: center;
    padding: 80px 20px;
    background: linear-gradient(to right, #111, #333);
    color: white;
  }
  
  .hero h1 {
    font-size: 28px;
    margin-bottom: 10px;
  }
  
  .hero p {
    opacity: 0.8;
  }
  
  /* SECTIONS */
  .section {
    padding: 50px 20px;
    text-align: center;
  }
  
  .grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 15px;
    margin-top: 30px;
  }
  
  .card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  }
  
  /* ABOUT */
  .about {
    padding: 60px 20px;
    text-align: center;
    background: #fff;
  }
  
  /* FOOTER */
  footer {
    text-align: center;
    padding: 20px;
    background: #111;
    color: white;
  }
  
  /* RESPONSIVE FIX */
  @media (max-width: 600px) {
    .hero h1 {
      font-size: 22px;
    }
  
    .nav {
      flex-direction: column;
      gap: 10px;
    }
  }