body {
      margin: 0;
      font-family: 'Inter', Arial, sans-serif;
      background: #f5f0ec;
      color: #111;
      display: flex;
      justify-content: center;
      align-items: center;
      height: 100vh;
      text-align: center;
    }

    .container {
      max-width: 900px;
      padding: 40px 20px;
    }

    .logo {
      font-size: 48px;
      font-weight: 800;
      color: #1f2a44;
      margin-bottom: 20px;
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      gap: 12px;
    }

    .logo img {
      max-width: 180px;
      height: auto;
      display: block;
      border-radius: 12px;
    }

    .logo span {
      color: #4fd1c5;
    }

    h1 {
      font-size: 48px;
      line-height: 1.2;
      margin-bottom: 20px;
    }

    h1 .highlight {
      color: #2563eb;
    }

    p {
      font-size: 18px;
      color: #555;
      margin-bottom: 30px;
    }

    .form-wrapper {
      display: flex;
      justify-content: center;
      align-items: center;
    }

    input[type="email"] {
      padding: 14px;
      font-size: 16px;
      border-radius: 30px;
      border: 1px solid #ddd;
      width: 60%;
      max-width: 400px;
      margin-right: 10px;
    }

    button {
      padding: 14px 24px;
      border-radius: 30px;
      border: none;
      background-color: #2563eb;
      color: white;
      font-size: 16px;
      font-weight: bold;
      cursor: pointer;
    }

    button:hover {
      background-color: #1e40af;
    }

    button.loading {
      opacity: 0.6;
      cursor: not-allowed;
    }

    .success-message {
      margin-top: 20px;
      color: #16a34a;
      font-weight: bold;
      display: none;
    }

    .error-message {
      margin-top: 20px;
      color: #dc2626;
      font-weight: bold;
      display: none;
    }

    @media (max-width: 600px) {
      h1 { font-size: 32px; }
      .form-wrapper { flex-direction: column; }
      input[type="email"] {
        width: 100%;
        margin: 0 0 10px 0;
      }
    }