WordPress: Customize the standard wp-login Page. Overrides for stylesheet, logo, and links included.

customize-wp-login.php

<?php

/**
 * Customize the standard WordPress Login page.
 * Add to functions.php
 */
//Link to custom style sheet to override default.
function my_login_stylesheet() {
    wp_enqueue_style( 'custom-login', get_template_directory_uri() . '/dist/styles/main.css' );
}
add_action( 'login_enqueue_scripts', 'my_login_stylesheet' );
//Custom logo URL.  Links to the home page.
function my_login_logo_url() {
    return home_url();
}
add_filter( 'login_headerurl', 'my_login_logo_url' );
//Customize logo title.
function my_login_logo_url_title() {
    return 'My Custom Title';
}
add_filter( 'login_headertitle', 'my_login_logo_url_title' );