Improved admin UI

app/assets/stylesheets/admin.scss

@@ -0,0 +1,105 @@
+.admin-wrapper {
+  width: 100%;
+  height: 100%;
+  position: fixed;
+  background: #1a1c23;
+  overflow-y: scroll;
+
+  .sidebar {
+    width: 240px;
+    position: fixed;
+    left: 0;
+    height: 100%;
+    background: #282c37;
+
+    .logo {
+      display: block;
+      margin: 40px auto;
+      width: 100px;
+      height: 100px;
+    }
+
+    ul {
+      list-style: none;
+
+      a {
+        display: block;
+        padding: 15px 25px;
+        color: rgba(255, 255, 255, 0.7);
+        text-decoration: none;
+        transition: all 200ms linear;
+
+        i.fa {
+          margin-right: 5px;
+        }
+
+        &:hover {
+          color: #fff;
+          background-color: darken(#282c37, 5%);
+          transition: all 100ms linear;
+        }
+
+        &.selected {
+          color: #fff;
+          background-color: #2b90d9;
+
+          &:hover {
+            background-color: lighten(#2b90d9, 5%);
+          }
+        }
+      }
+    }
+  }
+
+  .content {
+    margin-left: 240px;
+    padding: 15px;
+  }
+}
+
+.filters {
+  display: flex;
+  margin-bottom: 20px;
+  padding-left: 8px;
+
+  .filter-subset {
+    flex: 0 0 auto;
+    margin-right: 40px;
+
+    ul {
+      margin-top: 5px;
+      list-style: none;
+
+      li {
+        display: inline-block;
+        margin-right: 5px;
+      }
+    }
+
+    strong {
+      font-weight: 500;
+      text-transform: uppercase;
+      font-size: 12px;
+    }
+
+    a {
+      display: inline-block;
+      color: rgba(255, 255, 255, 0.7);
+      text-decoration: none;
+      text-transform: uppercase;
+      font-size: 12px;
+      font-weight: 500;
+      border-bottom: 2px solid #282c37;
+
+      &:hover {
+        color: #fff;
+        border-bottom: 2px solid lighten(#282c37, 5%);
+      }
+
+      &.selected {
+        color: #2b90d9;
+        border-bottom: 2px solid #2b90d9;
+      }
+    }
+  }
+}