Quick custom WP admin

_core.scss

html {

}

a {

}

.wp-core-ui .button-primary {

}

.wrap {
  // Page title action button
  .add-new-h2,
  .page-title-action {
    &, &:active {

    }
  }

  // Page title
  h1 {

  }

  // Meta box title
  h2 {

  }
}

#wp-admin-bar-wp-logo,
#wpfooter {
  display: none;
}

_login.scss

.login {
  h1 a {
      width: 263px;
      height: 97px;
      background: url(http://placehold.it/263x97);
      margin-bottom: 40px;
  }

  form {
    background: transparent;
  }

  .message {

  }

  #nav,
  #backtoblog {
    a {

    }
  }
}

_sidebar.scss

#adminmenu
#adminmenuback,
#adminmenuwrap {

}

#adminmenu {
  a,
  .wp-submenu a {

  }

  .wp-submenu {

  }

  .wp-menu-separator {

  }

  // active opened menu header
  li.wp-has-current-submenu a.wp-has-current-submenu {

  }

  // active opened submenu
  .wp-has-current-submenu .wp-submenu {

  }

  // icon
  div.wp-menu-image:before {

  }

  // submenu header hover / focus
  li.menu-top:hover,
  li.opensub > a.menu-top,
  li > a.menu-top:focus {

  }
}

// icon hover
#adminmenu li:hover div.wp-menu-image:before {

}

_topbar.scss

#wpadminbar {


  // links
  a.ab-item,
  > #wp-toolbar span.ab-label {

  }

  // submenu
  .menupop .ab-sub-wrapper {

  }

  // links hover/focus
  .quicklinks .menupop.hover ul li a:hover,
  &.nojs .quicklinks .menupop:hover ul li a:hover{

  }

  // icons
  .ab-icon:before,
  .ab-item:before {

  }

  // hover icons
  li:hover {
    .ab-icon:before,
    .ab-item:before {

    }
  }

  // focus icons
  li .ab-item:focus:before,
  li a:focus .ab-icon:before {

  }
}

admin.scss

@import 'core';
@import 'login';
@import 'topbar';
@import 'sidebar';