* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: "Poppins", sans-serif;
    }

    body {
      min-height: 100vh;
      display: flex;
      justify-content: center;
      align-items: center;
      background: #f5f7fa;
    }

    .container {
      width: 100%;
      max-width: 380px;
      background: #ffffff;
      padding: 35px;
      border-radius: 14px;
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
      text-align: center;
    }

    h2 {
      margin-bottom: 12px;
      color: #1d4ed8;
      font-size: 24px;
      font-weight: 600;
    }

    p {
      font-size: 14px;
      color: #555;
      margin-bottom: 22px;
    }

    input[type="email"] {
      width: 100%;
      padding: 14px;
      border-radius: 8px;
      border: 1px solid #d1d5db;
      font-size: 14px;
      outline: none;
      transition: 0.2s;
    }

    input[type="email"]:focus {
      border-color: #2563eb;
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    }

    button {
      width: 100%;
      margin-top: 18px;
      padding: 14px;
      border: none;
      border-radius: 8px;
      background: #2563eb;
      color: #ffffff;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: background 0.2s;
    }

    button:hover {
      background: #1e40af;
    }

    .message {
      margin-top: 18px;
      font-size: 13px;
      color: #dc2626;
    }

    .back-link {
      margin-top: 20px;
      display: block;
      font-size: 13px;
      text-decoration: none;
      color: #2563eb;
      font-weight: 500;
    }

    .back-link:hover {
      text-decoration: underline;
    }