Adding upstream version 1.1.1.upstream/1.1.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

39 files changed, 2874 insertions, 0 deletions

diff --git a/public/css/common.less b/public/css/common.less
new file mode 100644
index 0000000..4cf5cfc
--- /dev/null
+++ b/public/css/common.less
@@ -0,0 +1,405 @@
+/* Icinga DB Web | (c) 2020 Icinga GmbH | GPLv2 */
+
+@exports: {
+  @iplWebAssets: "../lib/icinga/icinga-php-library";
+};
+
+& > .content.full-width {
+  padding-left: 0;
+  padding-right: 0;
+
+  .list-item,
+  .table-layout .table-row {
+    padding-left: 1em;
+    padding-right: 1em;
+  }
+}
+
+& > .content.full-height {
+  padding-top: 0;
+  padding-bottom: 0;
+}
+
+.plugin-output {
+  .monospace();
+  word-break: break-word;
+}
+
+div.show-more {
+  .clearfix();
+  float: right;
+}
+
+.state-ball.state-not-available {
+  .ball-solid(@gray-light);
+  .animate(pulse 1.5s infinite both);
+}
+
+.icon-ball {
+  .ball();
+  .ball-outline(@gray);
+  text-align: center;
+
+  i:before {
+    margin-right: 0;
+  }
+}
+
+.user-ball {
+  .ball();
+  .ball-size-xl();
+  .ball-solid(@gray-semilight);
+  font-weight: bold;
+  line-height: 1.75;
+  text-transform: uppercase;
+}
+
+.usergroup-ball {
+  .ball();
+  .ball-outline(@gray);
+  .ball-size-xl();
+  line-height: 1.75;
+  text-transform: uppercase;
+}
+
+.ack-badge {
+  text-transform: uppercase;
+  line-height: 1;
+  margin-top: -.25em;
+  align-self: flex-start;
+
+  i {
+    vertical-align: baseline;
+  }
+}
+
+.controls {
+  .box-shadow(0, 0, 0, 1px, @gray-lighter);
+  flex-shrink: 0;
+  position: relative; // Required for the host meta info control
+  z-index: 1; // The content may clip, this ensures the separator is always visible
+
+  > :not(:only-child) {
+    margin-bottom: .5em;
+  }
+
+  #object-meta-info {
+    margin-bottom: 0;
+
+    .object-meta-info {
+      margin-bottom: .5em;
+    }
+  }
+
+  &.overdue,
+  &.overdue .tabs li.active a,
+  &.overdue .object-meta-info-control {
+    background-color: @gray-lighter;
+  }
+
+  .limit-control,
+  .view-mode-switcher,
+  .sort-control {
+    margin-left: .5em;
+    float: right;
+  }
+
+  .toggle-switch {
+    margin-top: 0;
+    margin-bottom: 0;
+  }
+
+  .item-list {
+    width: 100%;
+
+    .list-item .main {
+      border-top: none;
+    }
+
+    .list-item .visual {
+      width: auto;
+      margin-top: 0;
+    }
+
+    .list-item .visual,
+    .list-item .main {
+      padding-bottom: .25em;
+      padding-top: .25em;
+    }
+  }
+
+  .search-controls .continue-with {
+    margin-right: -.5em;
+    margin-left: .5em;
+  }
+
+  .show-more {
+    margin-top: .25em;
+  }
+
+  .notice {
+    display: none;
+  }
+
+  // TODO: Remove once ipl-web v0.7.0 is required
+  &:not(.default-layout) {
+    .pagination-control {
+      float: left;
+    }
+
+    .sort-control {
+      display: flex;
+      justify-content: flex-end;
+
+      :not(.form-element) > label {
+        margin-right: 0;
+      }
+
+      .control-button {
+        margin: 0;
+      }
+    }
+
+    > :not(:only-child) {
+      margin-bottom: 0.5em;
+    }
+
+    .search-suggestions {
+      margin-bottom: 2.5em;
+    }
+
+    .search-controls {
+      clear: both;
+      display: flex;
+      min-width: 100%;
+
+      .search-bar {
+        flex: 1 1 auto;
+
+        & ~ .control-button:last-child {
+          margin-right: -.5em;
+        }
+
+        & ~ .control-button {
+          margin-left: .5em;
+        }
+      }
+    }
+  }
+}
+
+.content > h2:first-child,
+.object-detail > h2:first-child {
+  margin-top: 0;
+}
+
+.content.full-width > h2 {
+  margin-left: 1em / 1.333em; // 1em / h2 font size
+}
+
+.object-detail .plugin-output {
+  .rounded-corners(.25em);
+  background-color: @gray-lighter;
+  padding: .5em;
+}
+
+.object-detail .item-list {
+  &.action-list .list-item {
+    margin-right: -1em;
+    margin-left: -1em;
+    padding-right: 1em;
+    padding-left: 1em;
+  }
+
+  .list-item:last-of-type .caption {
+    min-height: 1.5em;
+    max-height: 3em;
+    height: auto;
+  }
+}
+
+.perfdata-wrapper {
+  svg {
+    width: 100%;
+  }
+
+  svg:not(:last-child) {
+    margin-bottom: 1em;
+  }
+}
+
+.text-center {
+  text-align: center;
+}
+
+.text-muted {
+  color: @gray;
+}
+
+.accompanying-text {
+  color: @text-color-light;
+
+  .subject {
+    color: @text-color;
+    .user-select(all);
+  }
+}
+
+.comment-detail {
+  > form,
+  > h2:not(:first-child) {
+    margin-top: 1em;
+  }
+}
+
+.downtime-detail {
+  .downtime-progress {
+    margin-bottom: 1em;
+  }
+}
+
+.footer {
+  display: flex;
+  .box-shadow(0, -1px, 0, 0, @gray-lighter);
+  color: @text-color-light;
+
+  .selection-count {
+    flex: 1 1 auto;
+
+    .selected-items {
+      font-size: 1.25em;
+
+      &.hint {
+        opacity: 0.75;
+      }
+    }
+  }
+
+  .status-bar, .selection-count {
+    font-size: .857em;
+    padding: .25em 1em;
+    line-height: 1.7;
+  }
+}
+
+.status-bar {
+  margin-left: auto;
+
+  .item-count {
+    font-size: 1.25em;
+  }
+
+  .state-badges {
+    display: inline-block;
+    margin: 0 0 0 .417em;
+  }
+}
+
+.multiselect-summary {
+  display: flex;
+  align-items: center;
+  justify-content: flex-start;
+
+  // Donut
+  > div:first-child {
+    height: 4em;
+    width: 4em;
+
+    > svg {
+      height: auto;
+      max-width: 100%;
+    }
+  }
+
+  > .vertical-key-value {
+    padding: 0 .5em;
+  }
+}
+
+.item-table {
+  &.table-layout {
+    &.hostgroup-table {
+      --columns: 2;
+    }
+
+    &.servicegroup-table {
+      --columns: 1;
+    }
+
+    &.user-table, // TODO: make them lists.....
+    &.usergroup-table {
+      --columns: 0;
+    }
+  }
+}
+
+.hostgroup-table,
+.servicegroup-table,
+.usergroup-table,
+.user-table {
+  .title .content > * {
+    display: block;
+    max-width: fit-content;
+  }
+
+  .object-statistics-total {
+    width: 3.75em;
+  }
+}
+
+.controls .hostgroup-table-row,
+.controls .servicegroup-table-row,
+.controls .usergroup-table-row,
+.controls .user-table-row {
+  .title .content {
+    display: inline-flex;
+    align-items: center;
+
+    > :first-child {
+      flex: 0 1 auto;
+    }
+
+    > :last-child {
+      flex: 1 1 auto;
+    }
+
+    .subject {
+      margin-right: .5em;
+    }
+  }
+
+  .vertical-key-value {
+    br {
+      display: none;
+    }
+
+    .key {
+      padding-left: .417em;
+    }
+
+    .value {
+      vertical-align: middle;
+    }
+  }
+}
+
+.history-list,
+.objectHeader {
+  .visual.small-state-change .state-change {
+    padding-top: .25em;
+  }
+}
+
+.comment-popup {
+  .comment-list .main {
+    // This is necessary to limit the visible comment lines
+    // because the popup is shown in detailed list mode only
+    .caption {
+      height: 3em;
+    }
+  }
+}
+
+form[name="form_confirm_removal"] {
+  text-align: center;
+}
diff --git a/public/css/form/schedule-service-downtime-form.less b/public/css/form/schedule-service-downtime-form.less
new file mode 100644
index 0000000..a65264d
--- /dev/null
+++ b/public/css/form/schedule-service-downtime-form.less
@@ -0,0 +1,21 @@
+.downtime-duration {
+  > label {
+    display: flex;
+    flex: 1 1 auto;
+    flex-flow: row-reverse;
+
+    input {
+      flex: 1 1 auto;
+    }
+
+    span {
+      margin-left: .5em;
+      padding: .5625em 0;
+      line-height: 1.1em;
+    }
+
+    &:not(:last-child) {
+      margin-right: 1.5em;
+    }
+  }
+}
diff --git a/public/css/list/action-list.less b/public/css/list/action-list.less
new file mode 100644
index 0000000..5bb08f4
--- /dev/null
+++ b/public/css/list/action-list.less
@@ -0,0 +1,14 @@
+.action-list {
+  [data-action-item]:hover {
+    background-color: @tr-hover-color;
+    cursor: pointer;
+  }
+
+  [data-action-item].active {
+    background-color: @tr-active-color;
+  }
+
+  &[data-icinga-multiselect-url] * {
+    user-select: none;
+  }
+}
diff --git a/public/css/list/comment-list.less b/public/css/list/comment-list.less
new file mode 100644
index 0000000..46b194d
--- /dev/null
+++ b/public/css/list/comment-list.less
@@ -0,0 +1,50 @@
+// Style
+
+// Layout
+
+.comment-list:not(.detailed) .list-item {
+  .title > i:first-child {
+    margin-right: 0;
+  }
+
+  .title > .subject + .badge,
+  .title > .badge + .subject,
+  .title > .badge:last-of-type {
+    margin-left: 0;
+  }
+
+  .title a {
+    &:not(.subject) {
+      .text-ellipsis();
+    }
+  }
+
+  .title .subject:not(:last-child) {
+    margin-left: 0;
+  }
+
+  .title .subject:nth-child(3):last-child {
+    margin-left: 0;
+  }
+}
+
+.comment-list.minimal .list-item {
+  .user-ball {
+    font-size: .857em;
+    height: 1.75em;
+    line-height: 1.5em;
+    width: 1.75em;
+  }
+}
+
+.comment-list.detailed .list-item {
+  .title > .subject:nth-child(3),
+  .title > .badge + .subject:last-child {
+    margin-left: .3em;
+  }
+
+  .caption {
+    max-height: 4.5em;
+    white-space: normal;
+  }
+}
diff --git a/public/css/list/downtime-list.less b/public/css/list/downtime-list.less
new file mode 100644
index 0000000..8768097
--- /dev/null
+++ b/public/css/list/downtime-list.less
@@ -0,0 +1,93 @@
+// Style
+
+.downtime-list .list-item,
+.downtime-detail .list-item {
+  .progress {
+    > .bar {
+      background-color: @color-ok;
+    }
+  }
+
+  .visual {
+    background-color: @gray-lighter;
+  }
+
+  .main {
+    border-top: 1px solid @gray-light;
+  }
+
+  &:first-child .main {
+    border-top: none;
+
+    .progress > .bar {
+      border-top: 1px solid @gray-light;
+    }
+  }
+
+  &.in-effect {
+    .visual {
+      background-color: @color-ok;
+      color: @text-color-on-icinga-blue;
+    }
+
+    .main {
+      padding-top: 0; // If active the progress bar represents the padding top
+    }
+  }
+}
+
+// Layout
+
+.downtime-list .list-item {
+  .caption > * {
+    display: inline;
+  }
+}
+
+.downtime-list .list-item,
+.downtime-detail .list-item {
+  .progress {
+    height: 2px;
+    margin-bottom: ~"calc(.5em - 2px)";
+    min-width: 100%;
+    position: relative;
+
+    > .bar {
+      height: 100%;
+      max-width: 100%;
+    }
+  }
+
+  &:first-child .main .progress > .bar {
+    height: ~"calc(100% + 1px)"; // +1px due to the border added exclusively for the first item
+  }
+
+  .visual {
+    justify-content: center;
+    flex-shrink: 0;
+    line-height: 1em;
+    margin-right: .5em;
+    padding: .5em .25em;
+    text-align: center;
+    width: 6em;
+
+    strong {
+      font-size: 1.5em;
+      line-height: 1em;
+    }
+  }
+}
+
+.item-list.downtime-list.minimal .list-item {
+  .visual {
+    display: block;
+    line-height: 1.5;
+    width: 8em;
+    white-space: nowrap;
+
+    strong {
+      display: inline-block;
+      font-size: 1em;
+    }
+  }
+}
diff --git a/public/css/list/item-list.less b/public/css/list/item-list.less
new file mode 100644
index 0000000..251eec3
--- /dev/null
+++ b/public/css/list/item-list.less
@@ -0,0 +1,154 @@
+// Style
+
+.item-list {
+  .load-more:hover,
+  .page-separator:hover {
+    background: none;
+  }
+
+  > .load-more a {
+    .rounded-corners(.25em);
+    background: @low-sat-blue;
+    text-align: center;
+
+    &:hover {
+      opacity: .8;
+      text-decoration: none;
+    }
+  }
+
+  > .page-separator:after {
+    content: "";
+    display: block;
+    width: 100%;
+    height: 1px;
+    background: @gray;
+    align-self: center;
+    margin-left: .25em;
+  }
+
+  > .page-separator a {
+    color: @gray;
+    font-weight: bold;
+
+    &:hover {
+      text-decoration: none;
+    }
+  }
+
+  > .page-separator + .list-item .main {
+    border-top: none;
+  }
+}
+
+// Layout
+
+.item-list .list-item {
+  &.load-more a {
+    flex: 1;
+    margin: 1.5em 0;
+    padding: .5em 0;
+  }
+}
+
+.item-list.minimal {
+  > .empty-state {
+    padding: .25em;
+  }
+
+  .list-item {
+    header {
+      max-width: 100%;
+    }
+
+    .visual {
+      width: 2.2em;
+    }
+
+    .check-attempt {
+      display: none;
+    }
+
+    .title {
+      p {
+        display: inline;
+
+        & + p {
+          margin-left: .417em;
+        }
+      }
+    }
+
+    .caption {
+      flex: 1 1 auto;
+      height: 1.5em;
+      margin-right: 1em;
+      width: 0;
+
+      .line-clamp("reset");
+    }
+
+    .caption,
+    .caption .plugin-output {
+      .text-ellipsis();
+    }
+  }
+}
+
+.item-list.detailed .list-item {
+  .title {
+    word-break: break-word;
+    -webkit-hyphens: auto;
+    -ms-hyphens: auto;
+    hyphens: auto;
+  }
+
+  .caption {
+    display: block;
+    height: auto;
+    max-height: 7.5em; /* 5 lines */
+    position: relative;
+
+    .line-clamp(4)
+  }
+}
+
+.item-list {
+  .icon-image {
+    width:  3em;
+    height: 3em;
+    text-align: center;
+    margin-top: .5em;
+    margin-left: .5em;
+    overflow: hidden;
+
+    img {
+      max-height: 100%;
+      max-width: 100%;
+      height: auto;
+      width: auto;
+    }
+  }
+
+  &.minimal {
+    .icon-image {
+      height: 2em;
+      width: 2em;
+      line-height: 2;
+    }
+  }
+}
+
+.controls .item-list:not(.detailed):not(.minimal) .list-item {
+  .plugin-output {
+    line-height: 1.5
+  }
+
+  .caption {
+    height: 2.5em;
+  }
+}
+
+.controls .item-list.minimal .icon-image {
+  margin-top: 0;
+}
diff --git a/public/css/list/list-item.less b/public/css/list/list-item.less
new file mode 100644
index 0000000..2e67e3d
--- /dev/null
+++ b/public/css/list/list-item.less
@@ -0,0 +1,77 @@
+// Style
+
+.list-item {
+  &.overdue {
+    background-color: @gray-lighter;
+  }
+
+  &.overdue header > *:not(time),
+  &.overdue .caption {
+    opacity: 0.6;
+  }
+
+  &.overdue time {
+    .rounded-corners();
+    background-color: @color-critical;
+    color: @text-color-on-icinga-blue;
+  }
+
+  .title {
+    .state-text {
+      color: @text-color;
+      text-transform: uppercase;
+    }
+  }
+
+  footer {
+    .status-icons {
+      color: @text-color-light;
+
+      .icon {
+        opacity: .5;
+      }
+    }
+  }
+}
+
+// Layout
+
+.list-item {
+  &.overdue time {
+    margin-right: -.5em;
+    padding: 0 0.5em;
+  }
+
+  .visual .check-attempt {
+    margin-top: .5em;
+  }
+
+  .caption {
+    &.plugin-output, .plugin-output {
+      font-size: 11/12em;
+      line-height: 1.5*12/11em;
+    }
+  }
+
+  footer {
+    .status-icons {
+      display: flex;
+      align-items: center;
+    }
+
+    .performance-data {
+      margin-left: auto;
+
+      .inline-pie {
+        display: inline-block;
+        line-height: 1.5*.857em;
+        height: 1em;
+        width: 1em;
+
+        &:not(:last-child) {
+          margin-right: .209em;
+        }
+      }
+    }
+  }
+}
diff --git a/public/css/list/state-item-table.less b/public/css/list/state-item-table.less
new file mode 100644
index 0000000..9c2ee62
--- /dev/null
+++ b/public/css/list/state-item-table.less
@@ -0,0 +1,201 @@
+// Style
+
+.state-item-table {
+  padding: 0;
+
+  thead {
+    th {
+      font-weight: normal;
+
+      // Border styles start
+      form {
+        padding: 0 0 0 1px;
+        border-bottom: 1px solid @gray-light;
+        background: linear-gradient(to top, @gray-light, @body-bg-color);
+
+        button {
+          background: @body-bg-color;
+        }
+      }
+      &:first-child form {
+        padding-left: 0;
+      }
+      // Border styles end
+    }
+
+    button {
+      .appearance(none);
+      border: none;
+      background: none;
+      padding: .1em .5em;
+
+      text-align: left;
+      color: @text-color-light;
+
+      > .icon {
+        opacity: 0;
+        width: 0;
+        transition: opacity .25s linear, width .25s ease;
+      }
+      &:hover .icon,
+      &:focus .icon,
+      &.active .icon {
+        opacity: 1;
+        width: 1em;
+      }
+
+      &.active {
+        font-weight: bold;
+      }
+    }
+  }
+
+  .list-item:not(:last-child) > *:not(.visual),
+  .row-item:not(:last-child) {
+    border-bottom: 1px solid @gray-light;
+  }
+}
+
+@media print {
+  .list-item.page-break-follows {
+    &:not(:last-child) > *:not(.visual) {
+      border-bottom: none;
+    }
+  }
+}
+
+// Layout
+
+table.state-item-table {
+  table-layout: fixed;
+}
+
+.state-item-table {
+  display: table;
+  width: 100%;
+  margin: 0;
+
+  thead {
+    position: sticky;
+    top: 0;
+
+    th {
+      // That's layout, yes, controls overflow when scrolling
+      padding: 1em 0 0 0;
+      background: @body-bg-color;
+    }
+
+    th button {
+      width: 100%;
+      display: inline-flex;
+      align-items: baseline;
+      justify-content: space-between;
+
+      span {
+        .text-ellipsis();
+      }
+    }
+  }
+
+  th.has-visual {
+    width: 3em;
+  }
+
+  tbody td {
+    .text-ellipsis();
+    vertical-align: top;
+  }
+
+  .list-item {
+    display: table-row;
+  }
+
+  .list-item > .col {
+    display: table-cell;
+    vertical-align: middle;
+    white-space: nowrap;
+
+    &:not(:last-child) {
+      padding-right: 1em;
+    }
+
+    &.title {
+      .text-ellipsis();
+      width: 100%;
+    }
+
+    > * {
+      display: inline-block;
+
+      &:not(:last-child) {
+        margin-right: .5em;
+      }
+    }
+  }
+
+  .list-item > *:not(.visual) {
+    padding: .5em 0;
+  }
+
+  .list-item > .visual {
+    display: table-cell;
+    padding: .5em 1em 0 0;
+  }
+
+  > .empty-state-bar,
+  > tbody > tr:first-child .empty-state-bar {
+    margin: 0 1em;
+  }
+}
+
+.content.full-width .state-item-table .list-item {
+  // The .list-item itself can't have padding because of `display:table-row`
+  &:before, &:after {
+    display: inline-block;
+    content: '\00a0';
+    width: 1em;
+  }
+}
+
+#layout.twocols table.state-item-table {
+  > thead > tr > th,
+  > tbody > tr > td {
+    &:nth-child(n+6) {
+      display: none;
+      width: 0;
+    }
+  }
+}
+
+#layout.wide-layout .item-table th.has-plugin-output {
+  width: 50em;
+}
+#layout.default-layout .item-table th.has-plugin-output {
+  width: 30em;
+}
+#layout.compact-layout .item-table th.has-plugin-output {
+  width: 10em;
+}
+
+#layout.twocols table.item-table {
+  .has-plugin-output {
+    width: auto;
+  }
+}
+
+table.item-table {
+  th.has-visual {
+    button {
+      display: inline-flex;
+      justify-content: center;
+    }
+
+    span > .icon:before {
+      margin: 0;
+    }
+  }
+
+  .visual {
+    text-align: center;
+  }
+}
diff --git a/public/css/list/state-row-item.less b/public/css/list/state-row-item.less
new file mode 100644
index 0000000..31c7e5a
--- /dev/null
+++ b/public/css/list/state-row-item.less
@@ -0,0 +1,42 @@
+// Style
+
+.row-item {
+  .plugin-output {
+    overflow: hidden;
+    .line-clamp();
+  }
+
+  .subject {
+    font-weight: bold;
+  }
+}
+
+// Layout
+
+.row-item {
+  .performance-data {
+    overflow: hidden;
+    .line-clamp(2);
+    white-space: normal;
+    margin-left: -.25em;
+
+    .inline-pie {
+      display: inline-block;
+      width: 1em;
+      height: 1em;
+      margin-left: .25em;
+    }
+  }
+
+  .has-icon-images {
+    height: 2.5em;
+    vertical-align: middle;
+
+    img {
+      max-height: 100%;
+      max-width: 100%;
+      height: auto;
+      width: auto;
+    }
+  }
+}
diff --git a/public/css/list/user-list.less b/public/css/list/user-list.less
new file mode 100644
index 0000000..078d1b9
--- /dev/null
+++ b/public/css/list/user-list.less
@@ -0,0 +1,26 @@
+// Layout
+
+.controls .user-list,
+.controls .usergroup-list {
+  .usergroup-ball,
+  .user-ball {
+    height: 1.5em;
+    width: 1.5em;
+    line-height: ~"calc(1.5em - 4px)";
+    display: block;
+  }
+
+  .title br {
+    display: none;
+  }
+
+  .list-item {
+    & > .visual {
+      padding-top: 0.25em;
+    }
+
+    & > .col {
+      padding: .25em 0;
+    }
+  }
+}
diff --git a/public/css/markdown.less b/public/css/markdown.less
new file mode 100644
index 0000000..bebede5
--- /dev/null
+++ b/public/css/markdown.less
@@ -0,0 +1,80 @@
+.markdown {
+  > p,
+  > hr,
+  > ul,
+  > ol,
+  > table,
+  > pre,
+  > blockquote,
+  li > ul,
+  li > ol {
+    margin: 1em 0 1em 0;
+
+    &:first-child {
+      margin-top: 0;
+    }
+  }
+
+  p {
+    &:last-child {
+      margin-bottom: 0;
+    }
+  }
+
+  img {
+    max-width: 100%;
+    height: auto;
+  }
+
+  a {
+    border-bottom: 1px dotted @text-color-light;
+
+    &:hover, &:focus {
+      border-bottom: 1px solid @text-color;
+      text-decoration: none;
+    }
+
+    img {
+      max-width: 32em;
+    }
+
+    &.with-thumbnail {
+      img {
+        padding: 1px;
+      }
+
+      &:hover, &:focus {
+        img {
+          padding: 0;
+        }
+      }
+    }
+  }
+
+  table {
+    border-collapse: collapse;
+
+    th {
+      text-align: left;
+      background-color: @gray-lighter;
+    }
+
+    &, th, td {
+      border: 1px solid;
+      border-color: @gray-light;
+    }
+  }
+}
+
+.markdown.inline {
+  img {
+    max-height: 100%;
+    vertical-align: middle;
+  }
+
+  a.with-thumbnail {
+    &, &:hover, &:focus {
+      border-bottom: none;
+    }
+  }
+}
diff --git a/public/css/mixin/progress-bar.less b/public/css/mixin/progress-bar.less
new file mode 100644
index 0000000..d15b4c3
--- /dev/null
+++ b/public/css/mixin/progress-bar.less
@@ -0,0 +1,217 @@
+.progress-bar() {
+  &.progress-bar {
+    --hPadding: 10%;
+    --duration-scale: 80%;
+
+    .above,
+    .below {
+      list-style-type: none;
+      margin: 0;
+      padding: 0;
+
+      position: relative;
+      height: ~"calc(2em + 2px)";
+    }
+
+    .below {
+      > .left {
+        position: absolute;
+        left: var(--hPadding);
+        top: 0;
+      }
+
+      > .right {
+        position: absolute;
+        left: ~"calc(var(--hPadding) + var(--duration-scale))";
+        top: 0;
+      }
+    }
+
+    .positioned {
+      position: absolute;
+    }
+
+    .bubble {
+      .rounded-corners(.25em);
+      background-color: @body-bg-color;
+      border: 1px solid;
+      border-color: @gray-light;
+      position: relative;
+      box-shadow: 0 0 1em 0 rgba(0, 0, 0, .1);
+      padding: .25em .5em;
+      text-align: center;
+      width: auto;
+      // The wrapper of .bubble is dynamically moved to the left based on the value of the progress bar
+      // This moves the center of the bubble to the beginning of the wrapper regardless of the size of the content.
+      transform: translate(-50%, 0);
+      z-index: 1;
+
+      > * {
+        position: relative;
+        z-index: 2;
+      }
+
+      &:hover {
+        z-index: 5;
+      }
+
+      &::before {
+        background-color: @body-bg-color;
+        border-bottom: 1px solid @gray-light;
+        border-right: 1px solid @gray-light;
+        content: "";
+        display: block;
+        height: 1em;
+        margin-left: -.5em;
+        transform: rotate(45deg);
+        width: 1em;
+        z-index: 1;
+
+        position: absolute;
+        bottom: -.5em;
+        left: 50%;
+      }
+
+      &.upwards::before {
+        bottom: auto;
+        top: -7/12em;
+        transform: rotate(225deg);
+      }
+
+      &.right-aligned {
+        // This is (.675em (:before placement) + .5em (half :before width)) + 1px (:before border)
+        transform: translate(~"calc(-1.175em - 1px)", 0);
+
+        &::before {
+          top: auto;
+          left: 1.175em;
+          bottom: -.5em;
+        }
+      }
+
+      &.left-aligned {
+        // entire width (moves the right border in place of the left) + (.675em (:before placement) + .5em (half :before width)) + 1px (:before border)
+        transform: translate(~"calc(-100% + 1.175em + 1px)", 0);
+
+        &::before {
+          top: auto;
+          left: auto;
+          right: .675em;
+          bottom: -.5em;
+        }
+      }
+    }
+
+    .above .positioned {
+      bottom: 0;
+    }
+
+    .below .positioned {
+      top: 0;
+    }
+
+    .vertical-key-value {
+      .key {
+        white-space: nowrap;
+      }
+
+      .value {
+        white-space: nowrap;
+        font-size: 1em;
+        line-height: 1;
+      }
+    }
+
+    .timeline {
+      @marker-gap: 1/12em;
+
+      .rounded-corners(.5em);
+      background-color: @gray-lighter;
+      height: 1em;
+      margin: 1em 0;
+      position: relative;
+      width: 100%;
+      z-index: 1;
+
+      .marker {
+        .rounded-corners(50%);
+        background-color: @gray-light;
+        height: .857em;
+        margin-left: -.857/2em;
+        width: .857em;
+        z-index: 2;
+
+        position: absolute;
+        top: @marker-gap;
+
+        &.highlighted {
+          background-color: @icinga-blue;
+        }
+
+        &.left {
+          left: var(--hPadding);
+        }
+
+        &.right {
+          left: ~"calc(var(--hPadding) + var(--duration-scale))";
+        }
+      }
+
+      .progress {
+        position: absolute;
+        left: var(--hPadding);
+        width: var(--duration-scale);
+
+        &[data-animate-progress]::before {
+          content: "";
+          display: block;
+          width: .5em + @marker-gap;
+          height: 1em + (@marker-gap * 2);
+          margin-top: -@marker-gap;
+
+          .rounded-corners(.5em);
+          border-top-right-radius: 0;
+          border-bottom-right-radius: 0;
+
+          position: absolute;
+          left: -.5em - @marker-gap;
+        }
+
+        > .bar {
+          width: 0; // set by progress-bar.js
+          height: 1em + (@marker-gap * 2);
+          margin-top: -@marker-gap;
+        }
+
+        &::before,
+        > .bar {
+          background-color: @gray-light;
+        }
+      }
+
+      .timeline-overlay {
+        position: absolute;
+        left: ~"calc(var(--hPadding) + var(--duration-scale))";
+        width: var(--overlay-scale);
+        height: 1em + (@marker-gap * 2);
+        margin-top: -@marker-gap;
+
+        opacity: .6;
+      }
+
+      .progress > .bar,
+      .timeline-overlay {
+        display: flex;
+        justify-content: flex-end;
+
+        .now {
+          width: .25em;
+
+          border: solid @default-bg;
+          border-width: 1px 0 1px 0;
+          background-color: red;
+        }
+      }
+    }
+  }
+}
diff --git a/public/css/mixin/state-badges.less b/public/css/mixin/state-badges.less
new file mode 100644
index 0000000..4be2d07
--- /dev/null
+++ b/public/css/mixin/state-badges.less
@@ -0,0 +1,31 @@
+.state-badges() {
+  &.state-badges {
+    padding: 0;
+
+    ul {
+      padding: 0;
+    }
+
+    li {
+      display: inline-block;
+    }
+
+    li > ul > li:first-child:not(:last-child) .state-badge {
+      border-bottom-right-radius: 0;
+      border-top-right-radius: 0;
+    }
+
+    li > ul > li:last-child:not(:first-child) .state-badge {
+      border-bottom-left-radius: 0;
+      border-top-left-radius: 0;
+    }
+
+    > li:not(:last-child) {
+      margin-right: .25em;
+    }
+
+    li > ul > li + li {
+      margin-left: 1px;
+    }
+  }
+}
diff --git a/public/css/mixins.less b/public/css/mixins.less
new file mode 100644
index 0000000..326bf46
--- /dev/null
+++ b/public/css/mixins.less
@@ -0,0 +1,5 @@
+/* Icinga DB Web | (c) 2020 Icinga GmbH | GPLv2 */
+
+.monospace() {
+  font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
+}
diff --git a/public/css/view/service-grid.less b/public/css/view/service-grid.less
new file mode 100644
index 0000000..41400e5
--- /dev/null
+++ b/public/css/view/service-grid.less
@@ -0,0 +1,60 @@
+.service-grid-table {
+  width: 0;
+  white-space: nowrap;
+
+  td {
+    color: @gray-light;
+    padding: 0.2em;
+    text-align: center;
+    width: 1em;
+  }
+
+  .rotate-45 {
+    height: 10em;
+
+    div {
+      .transform(translate(0.4em, 2.8em) rotate(315deg));
+      width: 1.5em;
+    }
+  }
+
+  .service-grid-table-more {
+    text-align: center;
+    a {
+      display: inline;
+    }
+  }
+}
+
+.joystick-pagination {
+  margin: 0 auto;
+  font-size: 130%;
+
+  a {
+    color: @text-color;
+    outline: none;
+
+    &:hover {
+      color: @text-color-light;
+    }
+    &:focus, &:active {
+      color: @icinga-blue;
+    }
+  }
+
+  i {
+    display: block;
+    height: 1.5em;
+    width: 1.5em;
+  }
+}
+
+.service-grid-link {
+  .bg-stateful();
+  .rounded-corners();
+
+  display: inline-block;
+  height: 1.5em;
+  vertical-align: middle;
+  width: 1.5em;
+}
diff --git a/public/css/widget/actions.less b/public/css/widget/actions.less
new file mode 100644
index 0000000..796fc38
--- /dev/null
+++ b/public/css/widget/actions.less
@@ -0,0 +1,20 @@
+.object-detail-actions a {
+  border-bottom: 1px solid @gray-light;
+  display: inline-block;
+  margin-bottom: .25em;
+
+  .text-ellipsis();
+  max-width: 32em;
+
+  &:hover {
+    border-color: @icinga-blue-light;
+    color: @icinga-blue;
+    text-decoration: none;
+  }
+}
+
+ul.object-detail-actions {
+    list-style-type: none;
+    padding: 0;
+    margin: 0;
+}
diff --git a/public/css/widget/check-attempt.less b/public/css/widget/check-attempt.less
new file mode 100644
index 0000000..1042a08
--- /dev/null
+++ b/public/css/widget/check-attempt.less
@@ -0,0 +1,17 @@
+.check-attempt {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.check-attempt .ball {
+  background-color: @gray-light;
+
+  &:not(:last-child) {
+    margin-right: 1/6em;
+  }
+
+  &.taken {
+    background-color: @gray-semilight;
+  }
+}
diff --git a/public/css/widget/check-statistics.less b/public/css/widget/check-statistics.less
new file mode 100644
index 0000000..4bd34c2
--- /dev/null
+++ b/public/css/widget/check-statistics.less
@@ -0,0 +1,192 @@
+.check-statistics {
+  position: relative;
+  .card();
+  .progress-bar();
+
+  .check-attempt {
+    display: inline-flex;
+  }
+
+  .bubble {
+    &.top-left-aligned,
+    &.top-right-aligned {
+      &::before {
+        visibility: hidden;
+      }
+
+      svg {
+        position: absolute;
+        top: -1em;
+        width: 1em;
+        height: 1em;
+
+        .bg {
+          fill: @body-bg-color;
+        }
+
+        .border {
+          fill: @gray-light;
+        }
+      }
+    }
+
+    &.top-left-aligned {
+      transform: unset;
+      border-top-left-radius: 0;
+
+      svg {
+        left: -1px;
+      }
+    }
+
+    &.top-right-aligned {
+      transform: translate(-100%);
+      border-top-right-radius: 0;
+
+      svg {
+        right: -1px;
+      }
+    }
+  }
+
+  // ATTENTION!: `&.progress-bar {` must not be used here, seems to confuse the less parser!!!!111
+
+  &.progress-bar .timeline .progress.running {
+    &::before,
+    > .bar {
+      background: @state-ok;
+    }
+  }
+
+  &.progress-bar .check-timeline {
+    margin-top: .5em;
+  }
+  &.progress-bar .above {
+    margin-top: .5em;
+  }
+
+  .interval-line {
+    position: absolute;
+    height: 100%;
+
+    &::before {
+      position: absolute;
+      top: ~"calc(50% - .125em)";
+      display: block;
+      height: .25em;
+      width: 100%;
+      content: "";
+
+      background-color: @gray-light;
+    }
+
+    .vertical-key-value {
+      position: absolute;
+      left: 50%;
+      transform: translate(-50%, 0);
+
+      padding: 0 .2em;
+      background-color: @body-bg-color;
+    }
+
+    .start,
+    .end {
+      position: absolute;
+      top: 50%;
+      width: .25em;
+      height: 1em;
+      background-color: @gray;
+    }
+
+    .start {
+      left: 0;
+      transform: translate(-50%, -50%);
+    }
+
+    .end {
+      right: 0;
+      transform: translate(50%, -50%);
+    }
+  }
+
+  .execution-line .vertical-key-value {
+    z-index: 1;
+  }
+
+  &.check-overdue {
+    --duration-scale: 60%;
+    --overlay-scale: 20%;
+
+    .above {
+      .now {
+        position: absolute;
+        right: var(--hPadding);
+        bottom: 0;
+
+        .bubble {
+          // to move the center of the bubble to the end of the wrapper.
+          transform: translate(50%, 0);
+        }
+      }
+    }
+
+    .timeline-overlay {
+      background: linear-gradient(90deg, @gray-light 0, @color-down 2em);
+      opacity: 1;
+
+      &::after {
+        background-color: @color-down;
+      }
+    }
+  }
+
+  &.checks-disabled.progress-bar {
+    .timeline {
+      .marker {
+        &.highlighted {
+          background-color: @gray;
+        }
+      }
+    }
+  }
+
+  .checks-disabled-overlay {
+    border-radius: 0.4em;
+    position: absolute;
+    top: 0;
+    right: 0;
+    left: 0;
+    bottom: 0;
+    display: flex;
+    flex-wrap: wrap;
+    align-items: center;
+    justify-content: center;
+    background-color: ~"@{disabled-gray}20";
+    z-index: 1;
+
+    .notes {
+      color: @text-color-light;
+      margin-top: -4em;
+      text-shadow: 0 0 1px rgba(0, 0, 0, 0.25);
+    }
+  }
+}
+
+#layout.twocols &#col1,
+#layout.minimal-layout,
+#layout.poor-layout,
+#layout.twocols.compact-layout,
+#layout.twocols.default-layout {
+  .check-statistics .bubble.top-right-aligned {
+    transform: translate(-50%, 0); // default what progress-bar() defined
+    border-top-right-radius: .25em; // default what progress-bar() defined
+
+    &::before {
+      visibility: visible;
+    }
+
+    svg {
+      display: none;
+    }
+  }
+}
diff --git a/public/css/widget/comment-popup.less b/public/css/widget/comment-popup.less
new file mode 100644
index 0000000..4012697
--- /dev/null
+++ b/public/css/widget/comment-popup.less
@@ -0,0 +1,74 @@
+.comment-popup {
+  font-size: 1em / .857em; // // default font size / footer font size = 12px
+  height: 6em;
+  border-radius: 0.25em;
+  border: 1px solid;
+  border-color: @gray-light;
+  background-color: @body-bg-color;
+}
+
+.comment-wrapper {
+  position: relative;
+
+  .comment-popup {
+    position: absolute;
+    top: 2.5em;
+    left: -1.6em;
+    z-index: 1;
+    display: none;
+    width: 50em;
+  }
+
+  .comment-popup:before {
+    content: '';
+    position: absolute;
+    display: inline-block;
+    width: 1.5em;
+    height: 1.5em;
+    left: 1.5em;
+    top: ~"calc(-0.75em - 1px)";
+    border-left: 1px solid @gray-light;
+    border-top: 1px solid @gray-light;
+    background-color: @body-bg-color;
+    z-index: -1;
+    transform: rotate(45deg);
+  }
+}
+
+ul.item-list li:last-child .comment-wrapper {
+  .comment-popup {
+    top: -7em;
+  }
+
+  .comment-popup:before {
+    bottom: ~"calc(-0.75em - 1px)";
+    top: unset;
+    transform: rotate(225deg);
+  }
+}
+
+.comment-wrapper:hover .comment-popup {
+  display: block
+}
+
+#layout {
+  &.twocols {
+    .comment-popup {
+      width: 35em;
+    }
+
+    &.poor-layout,
+    &.compact-layout {
+      .comment-popup {
+        width: 25em;
+      }
+    }
+  }
+
+  &.poor-layout,
+  &.minimal-layout {
+    .comment-popup {
+      width: 25em;
+    }
+  }
+}
diff --git a/public/css/widget/custom-var-table.less b/public/css/widget/custom-var-table.less
new file mode 100644
index 0000000..46f1984
--- /dev/null
+++ b/public/css/widget/custom-var-table.less
@@ -0,0 +1,60 @@
+.custom-var-table {
+  .level-1 th {
+    padding-left: .5em;
+  }
+
+  .level-2 th {
+    padding-left: 1em;
+  }
+
+  .level-3 th {
+    padding-left: 1.5em;
+  }
+
+  .level-4 th {
+    padding-left: 2em;
+  }
+
+  .level-5 th {
+    padding-left: 2.5em;
+  }
+
+  .level-6 th {
+    padding-left: 3em;
+  }
+
+  thead th {
+    padding-left: 0;
+    text-align: left;
+    font-weight: bold;
+    font-size: 1.167em;
+
+    > span {
+      :nth-child(1),
+      :nth-child(2) {
+        display: none;
+      }
+    }
+  }
+
+  &.can-collapse thead th > span, // Icinga Web 2 < 2.12
+  &[data-can-collapse] thead th > span { // >= 2.12
+    :nth-child(1) {
+      display: none;
+    }
+
+    :nth-child(2) {
+      display: inline-block;
+    }
+  }
+
+  &.collapsed thead th > span {
+    :nth-child(1) {
+      display: inline-block;
+    }
+
+    :nth-child(2) {
+      display: none;
+    }
+  }
+}
diff --git a/public/css/widget/donut-container.less b/public/css/widget/donut-container.less
new file mode 100644
index 0000000..6fc4466
--- /dev/null
+++ b/public/css/widget/donut-container.less
@@ -0,0 +1,24 @@
+.donut-container {
+  .card();
+
+  h2 {
+    margin: 0;
+  }
+
+  .state-badges {
+    text-align: center;
+  }
+
+  &:not(:last-of-type) {
+    margin-right: 1em;
+    margin-bottom: 1em;
+  }
+
+  .donut {
+    margin: 0 auto;
+  }
+}
+
+#layout.minimal-layout .donut-container {
+  width: 100%;
+}
diff --git a/public/css/widget/downtime-card.less b/public/css/widget/downtime-card.less
new file mode 100644
index 0000000..37dd8a5
--- /dev/null
+++ b/public/css/widget/downtime-card.less
@@ -0,0 +1,10 @@
+.downtime-progress {
+  .progress-bar();
+
+  &.progress-bar .timeline .downtime-elapsed {
+    &::before,
+    > .bar {
+      background-color: @state-ok;
+    }
+  }
+}
diff --git a/public/css/widget/group-grid.less b/public/css/widget/group-grid.less
new file mode 100644
index 0000000..94b5b13
--- /dev/null
+++ b/public/css/widget/group-grid.less
@@ -0,0 +1,42 @@
+// HostGroup- and -ServiceGroupGrid styles
+
+ul.item-table.group-grid {
+  grid-template-columns: repeat(auto-fit, 15em);
+  grid-gap: 1em 2em;
+
+  .table-row {
+    margin: -.25em;
+    padding: .25em;
+    border-radius: .5em;
+  }
+
+  li.group-grid-cell {
+    .title {
+      align-items: center;
+    }
+
+    .visual {
+      margin-right: 1em;
+    }
+
+    .content {
+      line-height: 1;
+
+      a {
+        display: inline-block;
+        max-width: 10em;
+        text-align: center;
+      }
+    }
+
+    .state-badge {
+      width: 2.5em;
+      height: 2.5em;
+      line-height: 2;
+    }
+  }
+}
+
+.content.full-width ul.item-table.group-grid {
+  margin: 0 1em;
+}
diff --git a/public/css/widget/host-state-badges.less b/public/css/widget/host-state-badges.less
new file mode 100644
index 0000000..d55a45c
--- /dev/null
+++ b/public/css/widget/host-state-badges.less
@@ -0,0 +1,3 @@
+.host-state-badges {
+  .state-badges();
+}
diff --git a/public/css/widget/key-value-list.less b/public/css/widget/key-value-list.less
new file mode 100644
index 0000000..cd99f5f
--- /dev/null
+++ b/public/css/widget/key-value-list.less
@@ -0,0 +1,19 @@
+.key-value-list {
+  list-style-type: none;
+  margin: 0;
+  padding: 0;
+
+  li {
+    display: flex;
+  }
+
+  li > span {
+    padding: .25em;
+
+    &.label {
+      display: block;
+      padding-left: 0;
+      width: 12em;
+    }
+  }
+}
diff --git a/public/css/widget/migrate-popup.less b/public/css/widget/migrate-popup.less
new file mode 100644
index 0000000..8f9586b
--- /dev/null
+++ b/public/css/widget/migrate-popup.less
@@ -0,0 +1,181 @@
+#migrate-popup {
+  @transitionLength: 350ms;
+
+  display: flex;
+  min-width: 16em;
+  z-index: 1000;
+  position: fixed;
+  top: 0;
+  right: 4em;
+  pointer-events: none;
+  line-height: 1.5em;
+
+  .transform(translateY(-100%));
+  .transition(transform @transitionLength ease-in);
+
+  &.active {
+    .transform(translateY(0%));
+    .transition(transform @transitionLength ease-out);
+  }
+
+  .suggestion-area {
+    .transform(translateY(0%));
+    .transition(transform 0s linear @transitionLength);
+  }
+
+  &.active .suggestion-area {
+    .transition(transform @transitionLength ease-out);
+  }
+
+  &.minimized .suggestion-area {
+    .transform(translateY(-100%));
+    .transition(transform @transitionLength ease-in);
+  }
+
+  &.hidden .suggestion-area {
+    .transition(none);
+  }
+
+  .minimizer {
+    width: 1.25em;
+    height: 1.5em;
+    margin-left: -1px;
+    z-index: 1;
+    pointer-events: auto;
+
+    border-bottom-right-radius: 4px;
+    background-color: @body-bg-color;
+
+    .transition(none);
+
+    i:before {
+      width: 1em;
+      margin: .1em 0 0 0;
+      content: '\f102';
+      font-size: 1.25em;
+      cursor: pointer;
+      color: @gray-light;
+    }
+
+    i:hover:before {
+      color: @menu-highlight-color;
+    }
+  }
+
+  &.minimized .minimizer {
+    border-bottom-left-radius: 4px;
+    .transition(border-bottom-left-radius 0s linear @transitionLength);
+  }
+
+  &.hidden .minimizer i:before {
+    content: '\f103';
+  }
+
+  &:not(.active) .suggestion-area, &.hidden .suggestion-area {
+    box-shadow: none;
+  }
+
+  .suggestion-area {
+    display: flex;
+    flex-direction: column-reverse;
+
+    padding: .75em;
+    flex-grow: 1;
+    pointer-events: auto;
+    font-size: .75em;
+
+    background: @body-bg-color;
+    border-radius: 0 0 4px 4px;
+    box-shadow: 0 0 1em 0 rgba(0, 0, 0, 0.3);
+
+    button {
+      .link-button();
+    }
+
+    p {
+      display: none;
+      margin-bottom: .5em;
+      color: @text-color-light;
+    }
+
+    form ~ .monitoring-migration-hint,
+    .search-migration-suggestions:not(:empty) + .search-migration-hint,
+    .monitoring-migration-suggestions:not(:empty) + .monitoring-migration-hint {
+      display: block;
+    }
+
+    & > button.close {
+      margin-left: auto;
+      margin-top: 1em;
+
+      &:hover {
+        text-decoration: underline;
+      }
+    }
+
+    ul {
+      padding: 0;
+      margin: 0;
+      list-style-type: none;
+    }
+
+    li {
+      margin: .5em 0;
+      display: flex;
+
+      &:last-of-type {
+        margin-bottom: 0;
+      }
+
+      &:first-of-type {
+        margin-top: 0;
+      }
+    }
+
+    li {
+      :not(:last-child) {
+        margin-right: .5em;
+      }
+
+      button:hover{
+        opacity: 0.8;
+      }
+
+      button[value="1"] {
+        flex-grow: 1;
+
+        color: @text-color;
+        text-decoration: underline;
+      }
+
+      button[value="0"] {
+        i:before {
+          margin: 0;
+          content: '\e804';
+        }
+      }
+    }
+
+    form {
+      width: 100%;
+
+      .control-group {
+        display: flex;
+        align-items: center;
+
+        .control-label-group {
+          margin-right: .5em;
+        }
+
+        label {
+          margin-left: auto;
+        }
+      }
+    }
+
+    .search-migration-suggestions:not(:empty) ~ form,
+    .search-migration-suggestions:not(:empty) ~ .monitoring-migration-suggestions:not(:empty) {
+      margin-bottom: .5em;
+    }
+  }
+}
diff --git a/public/css/widget/monitoring-health.less b/public/css/widget/monitoring-health.less
new file mode 100644
index 0000000..f0ed252
--- /dev/null
+++ b/public/css/widget/monitoring-health.less
@@ -0,0 +1,136 @@
+.monitoring-health {
+  max-width: 65em;
+
+  > section:not(:last-child) {
+    margin-bottom: 4em;
+  }
+
+  .vertical-key-value .value {
+    display: inline-block;
+    margin-bottom: .25em;
+  }
+
+  .check-summary {
+    padding: .5em 0;
+
+    .col {
+      padding: 0 1em .5em 1em;
+    }
+
+    .col:not(:last-child) {
+      border-right: 1px solid @gray-light;
+    }
+  }
+
+  .check-summary,
+  .instance-features {
+    .rounded-corners();
+    border: 1px solid;
+    border-color: @gray-light;
+    display: flex;
+    width: 100%;
+  }
+
+  .check-summary,
+  .col-content,
+  .icinga-info {
+    width: 100%;
+
+    display: flex;
+    flex-wrap: wrap;
+    justify-content: space-around;
+  }
+
+
+  .icinga-info {
+    margin-bottom: -2em;
+
+    .vertical-key-value {
+      margin-bottom: 2em;
+    }
+  }
+
+  .col {
+    flex: 1 1 auto;
+    text-align: center;
+
+    > h3 {
+      margin: 0 0 1em;
+    }
+  }
+
+  .icinga-health {
+    .rounded-corners();
+    margin-bottom: 2em;
+    padding: 1em;
+    text-align: center;
+    width: 100%;
+    font-weight: bold;
+
+    &.up {
+      border: 1px solid;
+      border-color: @color-up;
+      color: @color-up;
+    }
+
+    &.down {
+      background-color: @color-down;
+      color: @body-bg-color;
+    }
+  }
+
+  .instance-features {
+    .control-group {
+      flex: 1 1 auto;
+      margin: .5em 0;
+      padding: .5em;
+      width: 0;
+
+      display: flex;
+      align-items: center;
+      flex-direction: column-reverse;
+      justify-content: flex-end;
+
+      &:not(:last-of-type) {
+        border-right: 1px solid @gray-light;
+      }
+
+      .control-label-group {
+        font-size: 10/12em;
+        margin-right: 0;
+        margin-top: 1em;
+        padding: 0;
+        text-align: center;
+        width: auto;
+
+        label {
+          text-align: center;
+        }
+      }
+
+      .toggle-switch {
+        margin: 0;
+      }
+    }
+  }
+}
+
+#layout.minimal-layout {
+  .icinga-info {
+    .vertical-key-value {
+      width: 100%;
+    }
+  }
+
+  .instance-features {
+    flex-wrap: wrap;
+
+    .control-group {
+      width: 33%;
+
+      &:nth-child(3n) {
+        border-right: none;
+      }
+    }
+  }
+}
diff --git a/public/css/widget/notice.less b/public/css/widget/notice.less
new file mode 100644
index 0000000..7067665
--- /dev/null
+++ b/public/css/widget/notice.less
@@ -0,0 +1,23 @@
+// Style
+
+.notice {
+  @margin: 1em / 1.25;
+  @padding: .75em / 1.25;
+
+  .rounded-corners();
+  padding: @padding;
+  color: @text-color-on-icinga-blue;
+  background-color: @state-warning;
+  font-weight: bold;
+  font-size: 1.25em;
+
+  // Layout
+  display: flex;
+  align-items: baseline;
+  justify-content: space-between;
+  margin: 0 @margin @margin @margin;
+
+  > span {
+    .text-ellipsis();
+  }
+}
diff --git a/public/css/widget/object-features.less b/public/css/widget/object-features.less
new file mode 100644
index 0000000..b39414d
--- /dev/null
+++ b/public/css/widget/object-features.less
@@ -0,0 +1,53 @@
+form.object-features {
+  span.description {
+    text-align: left;
+  }
+
+  .control-label-group {
+    text-align: left;
+    margin-right: 0;
+    width: @name-value-table-name-width;
+    color: @text-color-light;
+
+    label {
+      font-size: inherit;
+    }
+  }
+
+  .control-group {
+    margin-top: 0;
+    margin-bottom: 0;
+
+    &.indeterminate {
+      justify-content: flex-start;
+
+      .control-label-group {
+        flex: 0 1 auto;
+      }
+
+      select {
+        width: auto;
+        flex: 0 1 auto;
+
+        & + span.hint {
+          flex: 0 1 auto;
+        }
+      }
+    }
+  }
+
+  .toggle-switch {
+    margin-left: @table-column-padding;
+  }
+
+  select {
+    margin-right: .5em;
+    margin-left: @table-column-padding;
+
+    & + span.hint {
+      margin: .35em;
+      color: @gray-light;
+      font-style: italic;
+    }
+  }
+}
diff --git a/public/css/widget/object-inspection.less b/public/css/widget/object-inspection.less
new file mode 100644
index 0000000..60a99bf
--- /dev/null
+++ b/public/css/widget/object-inspection.less
@@ -0,0 +1,17 @@
+// Style
+
+// Layout
+
+.inspection-detail {
+  th {
+    width: 16em;
+  }
+
+  pre, td {
+    white-space: break-spaces;
+    word-break: break-word;
+    -webkit-hyphens: auto;
+    -ms-hyphens: auto;
+    hyphens: auto;
+  }
+}
diff --git a/public/css/widget/object-meta-info.less b/public/css/widget/object-meta-info.less
new file mode 100644
index 0000000..82ad044
--- /dev/null
+++ b/public/css/widget/object-meta-info.less
@@ -0,0 +1,95 @@
+// Style
+
+.object-meta-info {
+  .vertical-key-value .value {
+    font-weight: normal;
+  }
+
+  .vertical-key-value:first-child {
+    text-align: left;
+  }
+
+  .vertical-key-value:last-child {
+    text-align: right;
+  }
+}
+
+.object-meta-info-control {
+  .link-button();
+
+  .rounded-corners(0 0 .5em .5em);
+  border: 1px solid;
+  border-color: @gray-lighter;
+  border-top-width: 0;
+  background: @body-bg-color;
+}
+
+// Layout
+
+.object-meta-info {
+  display: flex;
+  justify-content: space-between;
+
+  .horizontal-key-value {
+    padding: 0;
+
+    .key {
+      width: 9em;
+    }
+  }
+
+  .vertical-key-value {
+    &:first-child {
+      .text-ellipsis();
+      margin-right: 1em;
+    }
+
+    &:last-child {
+      white-space: nowrap;
+      margin-left: 1em;
+    }
+  }
+
+  .horizontal-key-value .value,
+  .horizontal-key-value .key,
+  .vertical-key-value .value,
+  .vertical-key-value .key {
+    font-size: 16/18em;
+    line-height: 18/16; // compensate smaller font-size (1/font-size)
+  }
+}
+
+.object-meta-info-control {
+  position: absolute;
+  right: 2.25em;
+  bottom: -2.5em; // height + margin-bottom
+  height: 2em;
+  padding: .25em;
+
+  .collapse-icon,
+  .expand-icon {
+    font-size: 1.2em;
+
+    &:before {
+      margin-right: 0;
+    }
+  }
+
+  .collapse-icon {
+    display: block;
+  }
+
+  .expand-icon {
+    display: none;
+  }
+}
+
+.collapsed + .object-meta-info-control {
+  .collapse-icon {
+    display: none;
+  }
+
+  .expand-icon {
+    display: block;
+  }
+}
diff --git a/public/css/widget/object-statistics.less b/public/css/widget/object-statistics.less
new file mode 100644
index 0000000..5a9c97a
--- /dev/null
+++ b/public/css/widget/object-statistics.less
@@ -0,0 +1,44 @@
+ul.object-statistics {
+  // Reset defaults
+  list-style-type: none;
+  margin: 0;
+  padding: 0;
+
+  display: flex;
+  align-items: center;
+
+  > li:not(:last-child) {
+    margin-right: 1em;
+  }
+}
+
+.object-statistics-graph .donut-graph {
+  height: 2em;
+  width:  2em;
+  vertical-align: middle;
+}
+
+.object-statistics-total a {
+  display: inline-block;
+  line-height: 1;
+  position: relative;
+
+  &:hover:before {
+    .rounded-corners();
+    background-color: @gray-lighter;
+    content: "";
+    display: block;
+    z-index: 1;
+
+    position: absolute;
+    bottom: -.4em;
+    left: -.4em;
+    top: -.4em;
+    right: -.4em;
+  }
+
+  .vertical-key-value {
+    position: relative;
+    z-index: 2;
+  }
+}
diff --git a/public/css/widget/performance-data-table.less b/public/css/widget/performance-data-table.less
new file mode 100644
index 0000000..26c18c8
--- /dev/null
+++ b/public/css/widget/performance-data-table.less
@@ -0,0 +1,62 @@
+/* Icinga DB Web | (c) 2021 Icinga GmbH | GPLv2 */
+
+.performance-data-table {
+  width: 100%;
+  overflow-x: auto;
+  display: block;
+
+  tr:not(:last-child) {
+    border-bottom: 1px solid @gray-lighter;
+  }
+
+  td {
+    text-align: right;
+    .text-ellipsis();
+  }
+
+  th {
+    font-size: .857em;
+    font-weight: normal;
+    text-transform: uppercase;
+    letter-spacing: .05em;
+  }
+
+  thead {
+    border-bottom: 1px solid @gray-light;
+  }
+
+  th:first-child,
+  td:first-child {
+    padding-left: 0;
+  }
+
+  .title {
+    text-align: left;
+    width: 100%;
+  }
+
+  td.title {
+    font-weight: bold;
+  }
+
+  .sparkline-col {
+    min-width: 1.75em;
+    width: 1.75em;
+    padding: 2/12em 0;
+    .invalid-perfdata {
+      font-size: 1.25em;
+      vertical-align: text-bottom;
+      color: @color-warning;
+    }
+  }
+
+  .inline-pie > svg {
+    vertical-align: middle;
+  }
+
+  .no-value {
+    color: @gray-semilight;
+    text-align: center;
+    display: block;
+  }
+}
diff --git a/public/css/widget/quick-actions.less b/public/css/widget/quick-actions.less
new file mode 100644
index 0000000..bddea43
--- /dev/null
+++ b/public/css/widget/quick-actions.less
@@ -0,0 +1,47 @@
+.quick-actions {
+  display: flex;
+  flex-wrap: wrap;
+  list-style-type: none;
+  margin: 0 -.5em;
+  padding: 0;
+
+  a {
+    text-decoration: none;
+  }
+
+  a,
+  button {
+    padding: .25em;
+    .rounded-corners();
+    display: inline-flex;
+    align-items: baseline;
+
+    &:hover {
+      background: @gray-lighter;
+    }
+  }
+
+  li {
+    margin: 0 .25em .5em .25em;
+    vertical-align: middle;
+    white-space: nowrap;
+  }
+}
+
+.controls:not(.default-layout) > .quick-actions:last-child,
+.controls > .quick-actions:last-child {
+  margin-bottom: 0;
+}
+
+#layout.twocols:not(.wide-layout) {
+  .quick-actions {
+    justify-content: space-between;
+    min-width: 100%;
+  }
+}
+
+#layout.wide-layout .controls {
+  .quick-actions {
+    float: left;
+  }
+}
diff --git a/public/css/widget/service-state-badges.less b/public/css/widget/service-state-badges.less
new file mode 100644
index 0000000..8a97faa
--- /dev/null
+++ b/public/css/widget/service-state-badges.less
@@ -0,0 +1,3 @@
+.service-state-badges {
+  .state-badges();
+}
diff --git a/public/css/widget/state-change.less b/public/css/widget/state-change.less
new file mode 100644
index 0000000..adc8d42
--- /dev/null
+++ b/public/css/widget/state-change.less
@@ -0,0 +1,128 @@
+.state-change {
+  display: inline-flex;
+
+  &.reversed-state-balls {
+    // This is needed, because with ~ we can address only subsequent nodes
+    flex-direction: row-reverse;
+  }
+
+  .state-ball {
+    .box-shadow(0, 0, 0, 1px, @body-bg-color);
+  }
+
+  // Same on same
+  .state-ball ~ .state-ball {
+    &.ball-size-xs {
+      margin-left: -.05em;
+    }
+
+    &.ball-size-s {
+      margin-left: -.15em;
+    }
+
+    &.ball-size-m {
+      margin-left: -.275em;
+    }
+
+    &.ball-size-ml {
+      margin-left: -.375em;
+    }
+
+    &.ball-size-l,
+    &.ball-size-xl {
+      margin-left: -.875em;
+    }
+  }
+
+  // big left, smaller right
+  &:not(.reversed-state-balls) .ball-size-l ~ .state-ball {
+    &.ball-size-ml {
+      margin-top: .25em;
+      margin-left: -.5em;
+      margin-right: .25em;
+    }
+  }
+
+  // smaller left, big right
+  &.reversed-state-balls .ball-size-l ~ .state-ball {
+    &.ball-size-ml {
+      z-index: -1;
+      margin-top: .25em;
+      margin-right: -.5em;
+    }
+  }
+
+  .state-ball.state-ok,
+  .state-ball.state-up,
+  .state-pending {
+    &.ball-size-l,
+    &.ball-size-xl {
+      background-color: @body-bg-color;
+    }
+  }
+
+  // Avoid transparency on overlapping solid state-change state-balls
+  .state-ball.handled {
+    position: relative;
+    opacity: 1;
+
+    i {
+      position: relative;
+      z-index: 3;
+    }
+
+    &:before {
+      content: "";
+      display: block;
+      position: absolute;
+      top: 0;
+      right: 0;
+      bottom: 0;
+      left: 0;
+      border-radius: 50%;
+      opacity: .6;
+      z-index: 2
+    }
+
+    &:after {
+      content: "";
+      display: block;
+      position: absolute;
+      top: -2px;
+      left: -2px;
+      right: -2px;
+      bottom: -2px;
+      border-radius: 50%;
+      background-color: @body-bg-color;
+      z-index: 1;
+    }
+
+    &.state-pending:before {
+      background-color: @color-pending;
+    }
+
+    &.state-down:before {
+      background-color: @color-down;
+    }
+
+    &.state-warning:before {
+      background-color: @color-warning;
+    }
+
+    &.state-critical:before {
+      background-color: @color-critical;
+    }
+
+    &.state-unknown:before {
+      background-color: @color-unknown;
+    }
+  }
+}
+
+.overdue .state-change .state-ball {
+  .box-shadow(0, 0, 0, 1px, @gray-lighter);
+
+  &.handled:after {
+    background-color: @gray-lighter;
+  }
+}
diff --git a/public/css/widget/table-layout.less b/public/css/widget/table-layout.less
new file mode 100644
index 0000000..f67ec0f
--- /dev/null
+++ b/public/css/widget/table-layout.less
@@ -0,0 +1,72 @@
+// HostGroup- and -ServiceGroupTable styles
+
+.item-table.table-layout {
+  --columns: 1;
+}
+
+ul.item-table.table-layout {
+  grid-template-columns: 1fr repeat(var(--columns), auto);
+
+  > li {
+    display: contents;
+
+    &:hover,
+    &.active {
+      .col, &::before, &::after {
+        // The li might get a background on hover. Though, this won't be visible
+        // as it has no box model since we apply display:contents to it.
+        background-color: inherit;
+      }
+    }
+  }
+
+  li:not(:last-of-type) {
+    .col {
+      border-bottom: 1px solid @gray-light;
+    }
+
+    .visual {
+      border-bottom: 1px solid @default-bg;
+    }
+  }
+
+  > .table-row {
+    &:not(:last-of-type) .title .visual {
+      margin-bottom: ~"calc(-.5em - 1px)";
+    }
+
+    .col {
+      padding: .5em 0;
+    }
+
+    .col:not(:last-child) {
+      padding-right: 1em;
+    }
+  }
+}
+
+.content.full-width ul.item-table.table-layout {
+  // Again, since the li has no box model, it cannot have padding. So the first
+  // and last child need to get the left and right padding respectively.
+  // But we don't want to have a border that spans to the very right or left,
+  // so pseudo elements are required. We could add empty cells instead, but
+  // that would require hard coding the width here, which I'd like to avoid.
+
+  grid-template-columns: ~"auto 1fr repeat(calc(var(--columns) + 1), auto)";
+
+  > li.table-row {
+    &::before, &::after {
+      display: inline-block;
+      content: '\00a0';
+      margin-bottom: 1px;
+    }
+
+    &::before {
+      padding-left: inherit;
+    }
+
+    &::after {
+      padding-right: inherit;
+    }
+  }
+}
diff --git a/public/css/widget/tag-list.less b/public/css/widget/tag-list.less
new file mode 100644
index 0000000..fe96691
--- /dev/null
+++ b/public/css/widget/tag-list.less
@@ -0,0 +1,31 @@
+.tag-list {
+  line-height: 1.5;
+  list-style-type: none;
+  margin: -.25em 0 0 0; // TODO: This is wrong here, if at all this must be part of wherever this widget is placed
+  padding: 0;
+
+  > li {
+    display: inline-block;
+
+    &:not(:last-child) {
+      margin-right: .417em;
+      margin-bottom: .25em; // TODO: Really? It's an inline ul, bottom margin is outer layout..
+    }
+
+    i {
+      opacity: 0.8;
+    }
+  }
+
+  > li > a {
+    .rounded-corners();
+    background-color: @gray-lighter;
+    display: block;
+    padding: .25em .5em;
+
+    &:hover {
+      background-color: @gray-light;
+      text-decoration: none;
+    }
+  }
+}
diff --git a/public/css/widget/view-mode-switcher.less b/public/css/widget/view-mode-switcher.less
new file mode 100644
index 0000000..7eda2a8
--- /dev/null
+++ b/public/css/widget/view-mode-switcher.less
@@ -0,0 +1,45 @@
+.view-mode-switcher {
+  list-style-type: none;
+  margin: 0 0 0.25em 0;
+  padding: 0;
+  display: flex;
+
+  input {
+    display: none;
+  }
+
+  label {
+    color: @control-color;
+    line-height: 1;
+    background: @low-sat-blue;
+    padding: 14/16*.25em 14/16*.5em;
+    font-size: 16/12em;
+    height: 24/16em; // desired pixel height / font-size
+    cursor: pointer;
+
+    &:first-of-type {
+      border-top-left-radius: 0.25em;
+      border-bottom-left-radius: 0.25em;
+    }
+
+    &:last-of-type {
+      border-top-right-radius: 0.25em;
+      border-bottom-right-radius: 0.25em;
+    }
+
+    &:not(:last-of-type) {
+      border-right: 1px solid @low-sat-blue-dark;
+    }
+
+    i {
+      // fix height for Chrome
+      display: block;
+    }
+  }
+
+  input[checked] + label {
+    background-color: @control-color;
+    color: @text-color-on-icinga-blue;
+    cursor: default;
+  }
+}