:root {
      --primary: #4ea8de;
      --secondary: #7400b8;
      --dark: #1f1f1f;
      --light: #f9f9f9;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background-color: var(--light);
      color: var(--dark);
      display: flex;
      flex-direction: column;
      min-height: 100vh;
    }

    .header {
      padding: 1.2rem 2rem;
      background: var(--dark);
      color: white;
      font-size: 1.5rem;
      font-weight: bold;
      text-align: center;
    }

    .container {
      flex: 1;
      display: flex;
      justify-content: center;
      align-items: center;
      padding: 2rem;
    }

    .card {
      background: white;
      padding: 2.5rem;
      border-radius: 1.5rem;
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
      width: 100%;
      max-width: 550px;
      animation: fadeIn 0.8s ease-in-out;
    }

    h2 {
      text-align: center;
      margin-bottom: 1.5rem;
      font-size: 2rem;
      color: var(--primary);
    }

    label {
      font-weight: 600;
    }

    .form-control {
      width: 100%;
      padding: 0.75rem;
      border: 1px solid #ccc;
      border-radius: 0.6rem;
      margin-bottom: 1rem;
      font-size: 1rem;
    }

    .btn-submit {
      background: var(--primary);
      color: white;
      font-weight: bold;
      padding: 0.75rem;
      border: none;
      border-radius: 999px;
      width: 100%;
      cursor: pointer;
      font-size: 1rem;
      transition: all 0.3s ease;
    }

    .btn-submit:hover {
      background: #3a94c4;
      transform: scale(1.03);
    }

    .form-check {
      margin-bottom: 1.5rem;
    }

    .form-check-label a {
      color: var(--secondary);
      text-decoration: underline;
    }

    .preview-btn {
      background: transparent;
      border: none;
      color: var(--secondary);
      font-size: 0.9rem;
      margin-top: -12px;
      margin-bottom: 12px;
      cursor: pointer;
      text-decoration: underline;
    }

    footer {
      text-align: center;
      padding: 1.2rem;
      background: var(--dark);
      color: white;
      font-size: 0.9rem;
    }

    @keyframes fadeIn {
      from {
        opacity: 0;
        transform: translateY(40px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

     .stepper {
      display: flex;
      justify-content: center;
      margin: 2rem 0 1rem;
    }
    .step-wrapper {
      display: flex;
      flex-direction: column;
      align-items: center;
      margin: 0 1rem;
    }
    .step {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: #ccc;
      color: white;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
    }
    .step.active {
      background: #007bff;
    }
    .progress-bar {
      width: 100%;
      background-color: #eee;
      border-radius: 10px;
      overflow: hidden;
      height: 12px;
      margin-bottom: 1rem;
    }
    .progress {
      height: 100%;
      width: 0;
      background-color: #007bff;
      transition: width 0.4s ease;
    }
     .btn-submit {
      background: var(--primary);
      color: white;
      font-weight: bold;
      padding: 0.75rem;
      border: none;
      border-radius: 999px;
      width: 100%;
      cursor: pointer;
      font-size: 1rem;
      transition: all 0.3s ease;
    }

    .btn-submit:hover {
      background: #3a94c4;
      transform: scale(1.03);
    }