body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    background-color: #f4f6f9; /* Un gris claro similar al de tu app */
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    color: #495057; /* Color de texto principal */
}

.login-container {
    background-color: #ffffff;
    padding: 30px 40px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-header {
    margin-bottom: 25px;
}

.logo-text {
    font-size: 28px;
    font-weight: bold;
    color: #333; /* Color oscuro para el texto del logo */
    margin-bottom: 10px;
}

.logo-np {
    background-color: #6A1B9A; /* Morado principal */
    color: #fff;
    padding: 5px 10px;
    border-radius: 4px;
    margin-right: 5px;
}

.login-header h2 {
    color: #6A1B9A; /* Morado principal */
    font-size: 24px;
    margin-bottom: 20px;
    font-weight: 500;
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #555;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 16px;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
    border-color: #8A2BE2; /* Un morado más claro para el foco */
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(106, 27, 154, 0.25); /* Sombra de foco morada */
}

.form-control.is-invalid {
    border-color: #dc3545; /* Rojo para error */
}

.invalid-feedback {
    display: block; /* Para que aparezca debajo del input */
    width: 100%;
    margin-top: .25rem;
    font-size: .875em;
    color: #dc3545; /* Rojo para mensajes de error */
}

.btn-login {
    background-color: #6A1B9A; /* Morado principal */
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    width: 100%;
    font-size: 16px;
    font-weight: bold;
    transition: background-color 0.2s ease;
}

.btn-login:hover {
    background-color: #4A0072; /* Morado más oscuro al pasar el mouse */
}

.alert {
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid transparent;
    border-radius: 4px;
}

.alert-danger {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}

.forgot-password {
    margin-top: 15px;
    font-size: 14px;
}
.forgot-password a {
    color: #6A1B9A;
    text-decoration: none;
}
.forgot-password a:hover {
    text-decoration: underline;
}
.footer-text {
    margin-top: 30px;
    font-size: 13px;
    color: #888;
}