body {
  margin: 0;
  padding: 0;
  background: #1B1B1B;
  font-family: Arial, sans-serif;
  position: relative;
}
ul,li{
  margin: 0;
  padding: 0;
  list-style: none;
}
.btn {
  border: none;
  cursor: pointer;
}

nav {
  position: relative;
  z-index: 10;
}

nav span {
  display: block;
  color: white;
  font-size: 12px;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.toolbar {
  position: fixed;
  top:110px;
  left:70px;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: scale 1s, border-radius 1s, box-shadow 1s;
  transform-origin: top;
  pointer-events: all;
  user-select: none;
  overflow: hidden;
  background: rgb(46, 30, 11);
  border:2px solid rgb(229, 196, 101);
  border-radius: 8px;
}

.toolbar-fold {
  scale: 1 0.1;
  border-radius: 20px;
  /* box-shadow: 10px 6px 30px rgba(0,0,0,0.1); */
}


#viewer {
  height: 100vh;
}
.btn.view-trigger{
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 114px;
  height: 100px;
  box-sizing: border-box;
  margin-bottom:10px;
  border:2px solid rgb(229, 196, 101);
  border-radius: 8px;
  color:#fff;
  background: linear-gradient(rgb(124, 108, 89),
  rgb(83, 70, 55),
  rgb(61, 48, 31));
  font-size: 20px;
}
.btn.view-trigger span{
  display: block;
  width:50px;
  height:50px;
  margin-bottom:5px;
  background: url(../assets/image/toggle-icon.png) no-repeat;
  background-position: 0 0;
}
.btn.view-trigger:first-child span{background-position: 0 0;}
.btn.view-trigger:nth-child(2) span{background-position: 0 -50px;}
.btn.view-trigger:nth-child(3) span{background-position: 0 -100px;}
.btn.view-trigger:nth-child(4) span{background-position: 0 -200px;}
.btn.view-trigger:nth-child(5) span{background-position: 0 -150px;}
.btn.view-trigger:first-child.active span{background-position: -50px 0;}
.btn.view-trigger:nth-child(2).active span{background-position: -50px -50px;}
.btn.view-trigger:nth-child(3).active span{background-position: -50px -100px;}
.btn.view-trigger:nth-child(4).active span{background-position: -50px -200px;}
.btn.view-trigger:nth-child(5).active span{background-position: -50px -150px;}
.btn.mode-trigger{
  width: 60px;
  height: 40px;
  color:#fff;
  border-radius: 8px;
  text-align: center;
  font-size: 20px;
  background:unset;
}
.mode-trigger.active,.mode-trigger:hover,.view-trigger.active,.view-trigger:hover {
  color: rgb(46, 30, 11);
  background: linear-gradient(rgb(229, 196, 101),
  rgb(249, 223, 148));
  background-size: 100% 100%;
}
#zoomNumber{
  position: fixed;
  bottom:50px;
  left:60px;
  color:red;
  z-index:1000;
}

.copyright {
  position: absolute;
  bottom: 15px;
  right: 15px;
  color: white;
  font-size: 10px;
}

.dragger {
  position: absolute;
  top: 0;
  left: 0;
  width: 50px;
  height: 50px;
  background-color: rgba(0,0,0,0.5);
  z-index: 500;
}
.viewer{
  display: flex;
  flex-direction: column;
  margin: 20px 10px 0;
}
.mode {
  position: fixed;
  top:50px;
  left:60px;
  display: flex;
  align-items: center;
  justify-content: center;
  width:160px;
  height: 72px;
  background: url(./images/mode-bg.svg) no-repeat;
  background-size: 100% 100%;
  z-index:10;
}

.vertical-bar {
  width: 2px;
  height: 80%;
  background: rgb(221, 221, 221);
}

.fold {
  margin-bottom: 10px;
}
.btn.fold-btn{
  padding:10px 47px;
  cursor: pointer;
}
.btn.fold-btn span,.unfold span{
  width: 0;
  height: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-top: 10px solid rgb(229, 196, 101);
}
.btn.fold-btn span{
  border-top: none;
  border-bottom: 10px solid rgb(229, 196, 101);
}
.unfold {
  border-radius: 5px;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  opacity: 0;
  cursor: pointer;
  transition: opacity 1s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.unfold img {
  height: 50%;
  opacity: 0;
  transition: scale 1s, opacity 100ms 800ms;
}

.unfold-mask {
  z-index: 1;
  opacity: 1;
  background: rgb(46, 30, 11);
  border-bottom: 20px solid rgb(229, 196, 101);
}

.unfold-mask span{
  opacity: 1;
  transform: scale(1, 10);
}

#msg{
  position: absolute;
  top: 72px;
  left: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  z-index: 1;
  color: #fff;
}
#msg .title{
  color:rgb(238, 208, 123);
  font-size:30px;
  text-shadow: 
    -1px -1px 0 black,  
    1px -1px 0 black,
    -1px  1px 0 black,
    1px  1px 0 black;
}
#msg .num{
  margin-top:6px;
  margin-left:20px;
  padding:6px 7px 4px;
  background: rgb(238, 208, 123);
  font-size: 16px;
  color: #000;
  border-radius: 5px;
}
#msg .local{
  padding: 6px 20px 3px 45px;
  background: url(./images/local-icon.svg) no-repeat;
  background-position: 20px bottom;
  text-shadow: 
    -1px -1px 0 black,  
      1px -1px 0 black,
    -1px  1px 0 black,
      1px  1px 0 black;
}
#msg .detail{
  padding-top: 6px;
  text-shadow: 
    -1px -1px 0 black,  
      1px -1px 0 black,
    -1px  1px 0 black,
      1px  1px 0 black;
}
.ruler {
  position: absolute;
  background-color: rgba(255, 255, 255, 0.8);
  border: 1px solid #000;
  overflow: hidden;
}
.ruler.horizontal {
  top: 0;
  left: 20px;
  width: calc(100% - 20px);
  height: 20px;
  border-bottom: none;
}
.ruler.vertical {
  top: 20px;
  left: 0;
  width: 40px;
  height: calc(100% - 20px);
  border-right: none;
}
.tick {
  position: absolute;
  background-color: #000;
}
.tick.horizontal {
  width: 1px;
  height: 5px;
}
.tick.vertical {
  width: 5px;
  height: 1px;
}
.tick-label {
  position: absolute;
  font-size: 10px;
  color: #000;
}
.tick-label.horizontal {
  top: 6px;
  left: 2px;
}
.tick-label.vertical {
  top: 2px;
  left: 6px;
}