slide-panels {
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  pointer-events: none;
  z-index: 100;
  contain: paint;
}

slide-panels:before {
  content: " ";
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.3); 
  transition: opacity 0.35s ease;
  opacity: 0;
  cursor: pointer;
  pointer-events: none;
}

slide-panels[open]:before {
  opacity: 1;
  pointer-events: all;
}

slide-panel {
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  background: #fff;
  box-shadow: 0 0 5px 1px rgba(0,0,0,0.15);
  transform: translate3d(-100%, 0%, 0);
  transition: transform 0.35s ease;
  z-index: 1;
  pointer-events: all;
}

slide-panel[options~="right"] {
  left: auto;
  right: 0;
  transform: translate3d(100%, 0%, 0);
}

slide-panel[open] {
  transform: translate3d(0%, 0%, 0);
}

detail-box {
  display: block;
}

detail-box > header [detail-box-toggle] {
  width: 2em;
  height: 2em;
  text-align: center;
  cursor: pointer;
}

detail-box > header [detail-box-toggle]:before {
  content: " ";
  display: inline-block;
  width: 0; 
  height: 0;
  border-left: 0.55em solid transparent;
  border-right: 0.55em solid transparent;
  border-top: 0.8em solid;
  vertical-align: sub;
  cursor: pointer;
}

detail-box[open] header [detail-box-toggle]:before {
  border-top: none;
  border-bottom: 0.8em solid;
}

detail-box > section {
  height: 0;
  opacity: 0;
  min-width: 100%;
  transition: height 0.3s ease, opacity 0.3s;
  overflow: hidden;
}

detail-box[open] > section {
  opacity: 1;
}


/* TAB-PANELS */


tab-panels > nav {
  display: flex;
}

tab-panels > nav > * {
  padding: 0.5em 1em;
  background: #e0e0e0;
  border: 1px solid #aaa;
  margin-left: -2px;
  cursor: pointer;
}

tab-panels > nav > *:focus {
  outline: none;
  background: #ccc;
}

tab-panels > nav > *:first-child {
  border-top-left-radius: 5px;
  border-bottom-left-radius: 5px;
}

tab-panels > nav > *:last-child {
  border-top-right-radius: 5px;
  border-bottom-right-radius: 5px;
}

tab-panels > nav > *[selected] {
  color: #fff;
  background: var(--dif-blue);
  border-color: #004c8a;
}

tab-panels > section {
  display: none;
}

tab-panels > section[selected] {
  display: block;
}