/* Basic reset */
* { box-sizing: border-box; margin: 0; padding: 0; font-family: Arial, sans-serif; }
body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #f0f2f5;
    }
.login-container {
    background: #fff;
    padding: 40px 30px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
    }
h1 {
    margin-bottom: 30px;
    color: #333;
    }
form label {
    display: block;
    text-align: left;
    margin-bottom: 10px;
    color: #555;
}
form input[type="text"],
form input[type="password"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 20px;
    border-radius: 6px;
    border: 1px solid #ccc;
    font-size: 16px;
}
form button {
    width: 100%;
    padding: 12px;
    background: #007bff;
    color: white;
    font-size: 16px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.3s ease;
}
form button:hover {
    background: #0056b3;
}
.error-message {
    margin-top: 15px;
    color: red;
    font-weight: bold;
}
.logo {
    display: block;
    margin: 0 auto 1rem auto;   /* spacing below logo */
    width: 80%;                 /* relative to container */
    max-width: 250px;            /* optional upper limit */
    height: auto;               /* keep aspect ratio */
}