* {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      font-family: 'Segoe UI', sans-serif;
      background: linear-gradient(to right, #141e30, #243b55);
      display: flex;
      align-items: center;
      justify-content: center;
      height: 100vh;
    }
    .login-container {
      background-color: #ffffff;
      padding: 40px 30px;
      border-radius: 10px;
      width: 100%;
      max-width: 400px;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    }
    .login-container h2 {
      text-align: center;
      margin-bottom: 30px;
      color: #243b55;
    }
    .login-container input {
      width: 100%;
      padding: 12px 15px;
      margin-bottom: 20px;
      border: 1px solid #ccc;
      border-radius: 6px;
      font-size: 16px;
      transition: border-color 0.3s;
    }
    .login-container input:focus {
      border-color: #1abc9c;
      outline: none;
    }
    .login-container button {
      width: 100%;
      padding: 12px;
      background-color: #1abc9c;
      border: none;
      color: white;
      font-size: 16px;
      font-weight: bold;
      border-radius: 6px;
      cursor: pointer;
      transition: background-color 0.3s;
    }
    .login-container button:hover {
      background-color: #16a085;
    }
    .error-message {
      background-color: #ffe5e5;
      color: #c0392b;
      padding: 10px;
      border-radius: 5px;
      margin-bottom: 15px;
      text-align: center;
    }