body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background: #f0f0f0;
    font-family: Arial, sans-serif;
}

.login-container {
    background: white;
    padding: 30px;
    border-radius: 10px;
    width: 320px;
    text-align: center;
    box-sizing: border-box;
    box-shadow: 0 0 15px rgba(0,0,0,0.15);
}

.login-container h2 {
    margin: 0 0 20px;
}

.login-container input {
    width: 100%;
    padding: 10px;
    margin: 8px 0;
    border-radius: 5px;
    border: 1px solid #ccc;
    box-sizing: border-box;
    height: 40px;
}

.login-container input::placeholder {
    color: #aaa;
}

.login-container button {
    width: 100%;
    padding: 10px;
    margin-top: 10px;
    border: none;
    border-radius: 5px;
    background: #4CAF50;
    color: white;
    font-weight: bold;
    cursor: pointer;
    height: 42px;
}

.login-container button:hover {
    background: #45a049;
}

button:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.error-msg {
    color: red;
    font-size: 0.85em;
    margin-top: 5px;
    min-height: 18px;
}

.links {
    margin-top: 15px;
}

.links a {
    display: block;
    margin: 5px 0;
    color: #007BFF;
    text-decoration: none;
    font-size: 0.9em;
    cursor: pointer;
}

.links a:hover {
    text-decoration: underline;
}

.message { color: red; margin-top: 10px; font-size: 0.9em; }
.success { color: green; margin-top: 10px; font-size: 0.9em; }