* { box-sizing: border-box; }

    body {
      font-family: 'Poppins', sans-serif;
      margin: 0; padding: 0;
      background: linear-gradient(135deg, #1e3c72, #2a5298);
      color: #fff;
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 100vh;
    }

    .form-container {
      background: #fff;
      color: #333;
      border-radius: 20px;
      padding: 2rem 3rem;
      width: 90%;
      max-width: 600px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
      position: relative;
      overflow: hidden;
    }

    .progress-bar {
      position: absolute;
      top: 0; left: 0;
      height: 6px;
      background: #1e88e5;
      width: 0%;
      transition: width 0.3s ease-in-out;
      border-top-left-radius: 20px;
      border-top-right-radius: 20px;
    }

    .step {
      display: none;
      animation: fade 0.3s ease-in-out;
    }

    .step.active {
      display: block;
    }

    @keyframes fade {
      from { opacity: 0; transform: translateY(20px); }
      to { opacity: 1; transform: translateY(0); }
    }

    h2 {
      font-size: 1.5rem;
      margin-bottom: 1.2rem;
      font-weight: 600;
      color: #1e3c72;
    }

    label {
      font-weight: 600;
      display: block;
      margin-bottom: 0.6rem;
      color: #444;
    }

    input[type="text"], input[type="email"], input[type="number"], select, textarea {
      width: 100%;
      padding: 0.8rem 1rem;
      margin-bottom: 1.5rem;
      border: 2px solid #ddd;
      border-radius: 12px;
      font-size: 1rem;
      font-family: 'Poppins', sans-serif;
      transition: border-color 0.3s ease;
      resize: vertical;
    }

    input[type="text"]:focus, input[type="email"]:focus, input[type="number"]:focus, select:focus, textarea:focus {
      border-color: #1e88e5;
      outline: none;
      box-shadow: 0 0 8px rgba(30, 136, 229, 0.3);
    }

    textarea {
      min-height: 80px;
    }

    .buttons {
      display: flex;
      justify-content: space-between;
    }

    button {
      padding: 0.8rem 1.8rem;
      background: #1e88e5;
      color: #fff;
      border: none;
      border-radius: 12px;
      font-size: 1.1rem;
      cursor: pointer;
      font-weight: 700;
      transition: background 0.2s ease;
      box-shadow: 0 4px 12px rgba(30, 136, 229, 0.4);
      user-select: none;
    }

    button:disabled {
      background: #aaa;
      cursor: not-allowed;
      box-shadow: none;
    }

    button:hover:not(:disabled) {
      background: #1565c0;
      box-shadow: 0 6px 18px rgba(21, 101, 192, 0.6);
    }

    .checkbox-container {
      display: flex;
      align-items: center;
      margin-bottom: 1.5rem;
      color: #444;
    }

    .checkbox-container input {
      margin-right: 12px;
      width: 20px; height: 20px;
      cursor: pointer;
    }

    @media (max-width: 480px) {
      button {
        width: 48%;
        font-size: 1rem;
        padding: 0.7rem 1rem;
      }
      .form-container {
        padding: 1.5rem 2rem;
      }
    }