body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f4f4f4;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.login-card {
    background: white;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 30px;
    width: 320px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

h1 {
    text-align: center;
    margin: 0 0 25px 0;
    font-size: 22px;
    color: #333;
    line-height: 1.3;
}

.subtitle {
    font-size: 13px;
    color: #666;
    font-weight: normal;
    display: block;
    margin-top: 5px;
    letter-spacing: 2px;
}

label {
    display: block;
    margin-top: 15px;
    font-weight: bold;
    font-size: 14px;
    color: #444;
}

input {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    box-sizing: border-box;
    font-size: 15px;
    border: 1px solid #ccc;
    border-radius: 5px;
    outline: none;
}

input:focus {
    border-color: #1976d2;
}

button {
    width: 100%;
    margin-top: 25px;
    padding: 10px;
    font-size: 16px;
    font-weight: bold;
    background: #1976d2;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background: #1565c0;
}

.error {
    margin-top: 20px;
    color: #dc3545;
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    padding: 10px;
    border-radius: 5px;
    text-align: center;
    font-size: 14px;
    font-weight: bold;
}