* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #0c4a6e;
    background: #f0f9ff;
    overflow-x: hidden;
  }

  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }

  /* Sticky header */
  header {
    position: sticky;
    top: 0;
    z-index: 999;
    background: linear-gradient(135deg, #e0f2fe, #bae6fd);
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.2);
    border-bottom: 1px solid #7dd3fc;
    transition: background 0.3s ease;
  }

  nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
  }

  /* Logo styles */
  .logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.6rem;
    font-weight: 700;
    color: #0c4a6e;
    text-decoration: none;
  }

  .logo-icon {
    width: 50px;
    height: 50px;
    background: url('https://harys722.github.io/test/profilie.png') center/cover no-repeat;
  }

  /* Navigation links */
  .nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
  }

  .nav-links a {
    text-decoration: none;
    color: #075985;
    font-weight: 600;
    transition: color 0.3s, transform 0.3s;
  }

  .nav-links a:hover {
    color: #00008B;
    transform: translateY(-2px);
  }

  /* Mobile menu button */
  .mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: #075985;
    cursor: pointer;
    transition: transform 0.2s;
  }

  /* Hero section styling */
  .hero {
    padding: 120px 20px;
    text-align: center;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  }

  .hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #0ea5e9, #0284c7, #0369a1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
  }

  .hero p {
    font-size: 1.2rem;
    color: #075985;
    max-width: 700px;
    margin: 0 auto 2.5rem;
  }

  .hero-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.2rem;
  }

  /* Buttons styling */
  .btn-primary, .btn-secondary {
    padding: 15px 30px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    min-width: 180px;
    text-align: center;
  }

  .btn-primary {
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
    color: #fff;
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
  }

  .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(14, 165, 233, 0.4);
  }

  .btn-secondary {
    background: #ADD8E6;
    color: #0c4a6e;
    border: 2px solid #7dd3fc;
  }

  .btn-secondary:hover {
    border-color: #0c4a6e;
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.15);
    transform: translateY(-2px);
  }

  /* Features section */
  .features {
    padding: 100px 20px;
    background: #f0f9ff;
  }

  .section-header {
    text-align: center;
    margin-bottom: 4rem;
  }

  .section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #0c4a6e;
    margin-bottom: 1rem;
  }

  .section-header p {
    font-size: 1.1rem;
    color: #075985;
    max-width: 600px;
    margin: 0 auto;
  }

  .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin-top: 4rem;
  }

  .feature-card {
    background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid #bae6fd;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  }
  .feature-card.visible {
    opacity: 1;
    transform: translateY(0);
  }

  .feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(14, 165, 233, 0.05), transparent);
    transition: left 0.6s ease;
  }
  .feature-card:hover::before {
    left: 100%;
  }

  .feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(14, 165, 233, 0.12);
    border-color: #0ea5e9;
  }

  .feature-icon {
    width: 70px; height: 70px;
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
    border-radius: 18px;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: white;
    box-shadow: 0 8px 20px rgba(14, 165, 233, 0.3);
  }

  /* Footer styles */
  footer {
    background: #0c4a6e;
    color: #fff;
    padding: 3rem 20px 2rem;
    margin-top: 50px;
  }

  .footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
  }

  .footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.4rem;
    font-weight: 600;
  }

  .footer-logo .logo-icon {
    width: 35px;
    height: 35px;
    background: url('https://harys722.github.io/test/profilie.png') center/cover no-repeat;
  }

  .footer-links {
    display: flex;
    gap: 2.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
  }

  .footer-links a {
    color: #bae6fd;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s, transform 0.3s;
  }

  .footer-links a:hover {
    color: #fff;
    transform: translateY(-1px);
  }

  .footer-bottom {
    margin-top: 2rem;
    border-top: 1px solid #075985;
    padding-top: 1.5rem;
    font-size: 0.95rem;
    text-align: center;
  }

  /* Mobile responsive styles */
  @media(max-width: 768px) {
    .mobile-menu-btn {
      display: block;
    }

  @media(max-width: 768px) {
    footer {
      padding: 2rem 20px;
    }
    footer .footer-content {
      flex-direction: column;
      align-items: center;
    }
    footer .footer-logo {
      justify-content: center;
      margin-bottom: 1.5rem;
    }
    footer .footer-links {
      justify-content: center;
      gap: 1.5rem;
      margin-top: 1rem;
      margin-bottom: 1.5rem;
    }
    footer .footer-bottom {
      margin-top: 1.5rem;
      padding-top: 1rem;
    }
  }

    .nav-links {
      position: absolute;
      top: 100%;
      right: 0;
      background: #e0f2fe;
      flex-direction: column;
      width: 100%;
      display: none;
      padding: 1rem 0;
      border-top: 1px solid #7dd3fc;
    }

    .nav-links.active {
      display: flex;
    }

    .nav-links a {
      padding: 0.8rem 20px;
      border-bottom: 1px solid #bae6fd;
    }

    .hero {
      padding: 80px 20px;
    }

    .features-grid {
      grid-template-columns: 1fr;
      gap: 2rem;
    }
  }

  /* Animations */
  @keyframes fadeInUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
  }

  /* Scrollbar styling */
  ::-webkit-scrollbar {
    width: 8px;
  }
  ::-webkit-scrollbar-track {
    background: #e0f2fe;
  }
  ::-webkit-scrollbar-thumb {
    background: #0ea5e9;
    border-radius: 4px;
  }
  ::-webkit-scrollbar-thumb:hover {
    background: #0284c7;
  }