Add base CSUI styles:

-Login

-Main header

-Main UI container

-Logo

ui/stylesheets/csui/_button.scss

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+@mixin csui-button {
+  @include linear-gradient(#fff, darken(#ccc, 30%));
+
+  display: block;
+  padding-top: 8px;
+  padding-bottom: 8px;
+  padding-left: 12px;
+  padding-right: 12px;
+  min-width: 92px;
+  font-size: 12px;
+  border-radius: 3px;
+  border: 1px solid black;
+}
+
+@mixin csui-button-cta {
+  @include csui-button;
+  @include linear-gradient(darkgray, lighten(black, 15%));
+
+  color: white;
+  font-weight: bold;
+  text-shadow: 0px 1px 1px black;
+}

ui/stylesheets/csui/_csui.scss

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+// External libs
+@import "../lib/normalize";
+@import "../lib/animate";
+@import "../lib/bourbon/bourbon";
+@import "../lib/neat/neat";
+
+// Core style
+html, body {
+  height: 100%;
+  font-family: Segoe UI,Trebuchet MS,Tahoma,Arial,sans-serif;
+}
+
+// Sub-components
+@import "login";
+@import "button";
+@import "form";
+@import "header";

ui/stylesheets/csui/_form.scss

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+@mixin csui-dropdown {
+  -webkit-appearance: button;
+  -moz-appearance: none;
+
+  @include background(
+    url(csui/img/form/dropdown-arrow.png) no-repeat right 8px center,
+    linear-gradient(#fff, #b6b6b6)
+  );
+
+  border-radius: 3px;
+  border: 1px solid black;
+  font-size: 14px;
+  height: 30px;
+  text-indent: 8px;
+}
+
+@mixin csui-dropdown-dark {
+  @include csui-dropdown;
+  @include background(
+      url(csui/img/form/dropdown-arrow-white.png) no-repeat right 8px center,
+      linear-gradient(#4e4e4e, #242424)
+  );
+
+  color: white;
+  font-weight: bold;
+  text-shadow: 0px 1px 1px black;
+}

ui/stylesheets/csui/_header.scss

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+@mixin csui-header {
+  @include background(
+    url(csui/img/overlay-pattern.png) repeat,
+    url(csui/img/header/gradient.png) no-repeat
+  );
+
+  background-size: auto, cover;
+
+  .logo {
+    background: url(csui/img/logo-main.png) no-repeat left;
+    width: 1280px;
+    height: 100px;
+    margin: auto;
+    background-size: 300px;
+  }
+
+  .controls {
+    @include linear-gradient(#525252, #262626);
+    @include row;
+
+    width: 1280px;
+    height: 75px;
+    padding-top: 14px;
+    margin: auto;
+    color: white;
+    border: 1px solid gray;
+    border-radius: 4px 4px 0 0;
+  }
+}

ui/stylesheets/csui/_login.scss

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+@mixin csui-login {
+  height: 100%;
+  min-height: 630px;
+
+  @include background(
+    url(csui/img/login/brand-logo.png),
+    url(csui/img/login/bottom-bar.png),
+    url(csui/img/login/overlay-pattern.png),
+    url(csui/img/login/gradient.png)
+  );
+
+  background-repeat: no-repeat, repeat-x, repeat, no-repeat;
+  background-size: auto, auto, auto, cover;
+  background-position: center bottom 25px, bottom, center, center;
+
+  form {
+    @include row;
+
+    background: rgba(#000812, 0.8);
+    padding-top: 60px;
+    padding-bottom: 60px;
+    position: relative;
+    top: 15%;
+    height: 400px;
+
+    .logo {
+      @include shift(2);
+      @include span-columns(4);
+
+      background: url(csui/img/logo-main.png) no-repeat top center;
+      background-size: contain;
+      float: left;
+      height: 500px;
+    }
+
+    .fields {
+      @include shift(3);
+      @include span-columns(3);
+
+      margin: auto;
+      color: white;
+
+      input[type=text],
+      input[type=password] {
+        font-size: 13px;
+        width: 100%;
+        padding: 10px;
+        margin-top: 10px;
+        margin-bottom: 10px;
+        border: 2px solid gray;
+
+        &:focus {
+          border: 2px solid #6aa6e9;
+          outline: none;
+        }
+      }
+
+      input[type=submit] {
+        @include csui-button-cta;
+      }
+
+      select {
+        @include csui-dropdown-dark;
+
+        width: 100%;
+        margin-top: 20px;
+      }
+    }
+  }
+}