body {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f5f5f5;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 2rem;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header i {
    font-size: 3rem;
    color: #3498db;
    margin-bottom: 1rem;
}

.login-header h1 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin: 0;
}

.form-floating {
    margin-bottom: 1rem;
}

.form-floating input {
    border-radius: 5px;
}

.btn-login {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border-radius: 5px;
    background-color: #3498db;
    border-color: #3498db;
}

.btn-login:hover {
    background-color: #2980b9;
    border-color: #2980b9;
}

.alert {
    margin-bottom: 1rem;
}