:root {
  --bar-black-color: #0c0c0d;
  --group-bar-size: 25px;
  --top-menu-height: 20px;
}

html,
body,
#content {
  width: 100%;
  height: 100%;
  overflow: hidden visible;
  background-color: #f9f9fa;
}

#bar {
  width: 100%;
  height: 100%;
}

#top-menu {
  width: 100%;
  height: var(--top-menu-height);
  position: sticky;
  top: 0;
}

#top-menu ul {
  background-color: var(--bar-black-color);
  color: #f9f9f2;
  list-style-type: none;
  margin: 0 0 5px 0;
  padding: 0;
}

#top-menu li {
  display: inline-block;
  width: 25px;
  height: var(--top-menu-height);
  text-align: center;
  padding: 0 7px 0;
  border-right: solid #cfcfcf 1px;
}

#bar-list {
  margin-top: 1px;
  background-color: var(--bar-black-color);
  width: 100vh;
  height: var(--group-bar-size);
  position: fixed;
  transform-origin: left top;
  transform: rotate(-90deg) translateX(-100%);
}

#bar-list-group {
  margin: 0 auto;
  height: 100%;
}

#bar-list-group li {
  padding-right: 10px;
  padding-left: 10px;
  margin-left: 1px;
  float: right;
  height: 100%;
  line-height: calc(var(--group-bar-size)*0.80);
  list-style: none;
  border-left: solid #cfcfcf 1px;
}

#bar-list-group li:first-child {
  border-right: solid #cfcfcf 1px;
}

.group-name {
  color: #f9f9f2;
}

.group-name.active-group {
  background-color: white;
  color: black;
}

.group-deletion-button {
  margin-right: 5px;
  text-align: center;
  vertical-align: middle;
}

.bar-tabs {
  width: calc(100% - var(--group-bar-size));
  height: calc(100% - var(--top-menu-height));
  margin-left: var(--group-bar-size);
}

.bar-tabs:not(.bar-tabs-active) {
  display: none;
}

.tabs {
  padding-top: 1px;
  width: 100%;
  height: 100%;
}

.inner-tabs {
  overflow-y: auto;
  scroll-behavior: smooth;
}

.tab {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  border: solid #cfcfcf 1px;
  margin-bottom: 1px;
  padding-left: 2px;
  padding-bottom: 1px;
  width: 100%;
  height: 22px;
  background-color: #ffffff;
  scroll-margin-top: var(--top-menu-height);
}

.tab.active {
  background-color: #d4f2fc;
}

.tab.hover {
  background-color: #cccccc;
}

.tab.active.hover {
  background-color: #b2dceb;
}

.tab.discarded {
  color: grey;
}

.tab.being-dragged {
  border: dashed black 1px;
}

.tab-title {
  display: inline-block;
  align-self: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  width: 100%;
}

.tab-favicon {
  /* necessary to avoid flicker when hovering the close button */
  flex-shrink: 0;
  display: inline-block;
  background-size: cover;
  background-position: center;
  width: 15px;
  height: 15px;
  margin-left: 5px;
  margin-right: 5px;
  vertical-align: middle;
}

.tab.discarded > .tab-favicon {
  filter: brightness(70%);
}

/*Huge thanks to @tobiasahlin at http://tobiasahlin.com/spinkit/ */
.three-dot-bounce {
  margin: 0px 6px 0px 6px;
  width: 15px;
  text-align: center;
}

.three-dot-bounce > div {
  margin-top: 0;
  /* this margin-bottom is used to center the three dots */
  margin-bottom: 4px;
  padding-bottom: 0;
  padding-top: 0;
  width: 3px;
  height: 3px;
  background-color: #333;

  border-radius: 100%;
  display: inline-block;
  animation: sk-bouncedelay 1.4s infinite ease-in-out both;
}

.three-dot-bounce .three-dot-bounce-1 {
  animation-delay: -0.32s;
}

.three-dot-bounce .three-dot-bounce-2 {
  animation-delay: -0.16s;
}

@keyframes sk-bouncedelay {
  0%, 80%, 100% { 
    transform: scale(0);
  } 40% { 
    transform: scale(1.0);
  }
}

.close-button-parent {
  width: 17px;
  height: 17px;
  margin-right: 4px;
  display: none;
}

.tab:hover > .close-button-parent {
  display: inline-block;
}

.close-button-parent:hover {
  background-color: #707070;
}

.close-button-outer {
  height: 15px;
  width: 2px;
  margin-left: 6.2px;
  margin-top: 1.2px;
  background-color: black;
  transform: rotate(45deg);
  z-index: 1;
}

.close-button-inner {
  height: 15px;
  width: 2px;
  background-color: black;
  transform: rotate(90deg);
  z-index: 2;
}

.close-button-parent:hover .close-button-outer {
  background-color: #cccccc;
}
.close-button-parent:hover .close-button-inner {
  background-color: #cccccc;
}

.shake-animation {
  display: inline-block;
  animation: .8s shake 1 alternate;
}

@keyframes shake {
  0% { transform: skewX(-15deg); }
  5% { transform: skewX(15deg); }
  10% { transform: skewX(-15deg); }
  15% { transform: skewX(15deg); }
  20% { transform: skewX(0deg); }
  100% { transform: skewX(0deg); }  
}