* { box-sizing: border-box; }
    body {
      margin: 0;
      font-family: 'Segoe UI', sans-serif;
      background: #f0f0f0;
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 100vh;
    }
    .login-wrapper {
      display: flex;
      flex-wrap: wrap;
      background: #fff;
      border-radius: 12px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.1);
      overflow: hidden;
      max-width: 900px;
      width: 100%;
    }
    .login-image {
      flex: 1 1 50%;
      background: url('https://www.akar-metal.com/public/frontend/assets/images/gallery/anasayfa-giris-2c436eeacab523d726ab867471e298ad5213d59e.jpeg') no-repeat center center;
      background-size: cover;
      min-height: 300px;
    }
    .login-container {
      flex: 1 1 50%;
      padding: 3rem 2rem;
    }
    .login-container h2 {
      text-align: center;
      color: #333;
      margin-bottom: 1.5rem;
    }
    .form-group {
      margin-bottom: 1rem;
    }
    label {
      font-size: 0.9rem;
      margin-bottom: 0.25rem;
      display: block;
      color: #555;
    }
    input[type="text"], input[type="password"] {
      width: 100%;
      padding: 0.75rem;
      border-radius: 6px;
      border: 1px solid #ccc;
    }
    input:focus {
      border-color: #4caf50;
      outline: none;
    }
    button {
      width: 100%;
      padding: 0.75rem;
      background: #4caf50;
      color: #fff;
      font-weight: bold;
      border: none;
      border-radius: 6px;
      margin-top: 1rem;
      cursor: pointer;
      transition: background 0.3s ease;
    }
    button:hover {
      background: #388e3c;
    }
    .error-box {
      background: #ffcdd2;
      color: #b71c1c;
      padding: 0.75rem;
      margin-bottom: 1rem;
      border-radius: 6px;
      animation: shake 0.3s ease-in-out;
      text-align: center;
    }
    @keyframes shake {
      0% { transform: translateX(0); }
      25% { transform: translateX(-5px); }
      50% { transform: translateX(5px); }
      75% { transform: translateX(-5px); }
      100% { transform: translateX(0); }
    }
    @media (max-width: 768px) {
      .login-wrapper {
        flex-direction: column;
      }
      .login-image {
        height: 200px;
      }
    }