style.css

/* layout */
.outer {
  margin-top: 50px;
}

.side {
  height: calc(100vh - 50px); /* 50是整个顶部的margin */
  position: sticky;
  top: 34px; /* 50 - 16，16是默认col都会加上的margin-top。不知道为什么sticky top 50的时候，即便这个col的margin-top强制设置成0了，还是会把这16的空留出来 */
  margin: 0 0 16px;
}

/* question */
#question-container::after, .answer-outer:not(:last-child):after {
  content: '';
  display: block;
  border: 1px solid #f5f5f5;
  margin: 1rem 0.25rem 1.5rem;
}

/* profile */
.avatar {
  max-width: 36px;
  max-height: 36px;
}
.profile-text {
  font-size: 14px;
}
.date {
  font-size: 10px;
}

/* answer & its propositions */
mark, .mark {
  padding-left: 0;
  padding-right: 0;
}
mark:hover, .mark:hover {
  text-decoration: underline;
}
.proposition {
  cursor: pointer;
}
.content .proposition ~ input[type="checkbox"] {
  position: absolute;
  transform: scale(0.75) translate(-0rem, -0.4rem);
  cursor: pointer;
  visibility: hidden;
}
.content .proposition ~ input[type="checkbox"]:checked {
  visibility: visible;
}
.content.truncate .proposition ~ input[type="checkbox"] {
  visibility: hidden !important;
}

.content.truncate mark {
  background-color: unset !important;
  color: black !important;
  cursor: auto !important;
}
.content.truncate {
  pointer-events: none;
}

.content {
  position: relative;
}
.content.truncate::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 5rem;
  background: linear-gradient(to top, #ffff, #fff0);
  z-index: 1;
}
.content.truncate.truncate-small::before {
  height: 2rem;
}
.content-collapse-button {
  display: block;
  width: 100%;
  text-align: center;
  padding: 0;
  text-decoration: none;
}
.content:not(.truncate)~.content-collapse-button {
  position: sticky;
  bottom: 0;
  background: #fff;
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

#answer-container .badge {
  cursor: pointer;
}

/* statistics */
.statistics {
  margin: calc(.5rem + 1px) 0; /* match "similar answer" accordion's padding & border */
}
.statistics > .views {
  margin-right: .75ch;
}
.statistics > .views:empty::before, .statistics > .upvotes:empty::before {
  content: '0';
}

/* similar answer & its propositions */
.similar-answers .statistics {
  margin: 0;
}
.similar-answers .profile-text, .similar-answers .statistics {
  font-size: 12px;
}

.similar-answers .content {
  font-size: 14px;
  transition: all .5s;
}

.similar-answers .content p,ul {
  margin-top: 0;
  margin-bottom: 0;
}

.similar-answers .content mark {
  padding: 0;
}

.similar-answers .concept {
  font-size: 12px;
}

/* note */
.edit-button {
  color: #0d6efd;
  cursor: pointer;
}
.edit-button:hover {
  color: #0a58ca;
}

ul#note-container:not(:empty) {
  padding: 0 0 0 1rem !important;
}
ul#note-container:empty::after {
  content: 'Click on highlighted propositions to add them here';
  color: rgb(185, 194, 204);
  position: absolute;
  left: 16px;
  right: 16px;
  top: 50%;
}

ul#note-container, #note-container ul {
  list-style: none;
}

#note-container .proposition-container {
  padding-left: 1rem !important;
}

#note-container .drag-handle {
  position: absolute;
  top: 0;
  left: 0;
  transform: translateX(-100%);
  box-sizing: border-box;
  cursor: move;
}
#note-container .collapse-handle > i {
  display: inline-block;
  transition: transform .35s ease;
}
#note-container .collapse-handle[aria-expanded="false"] > i {
  transform: rotate(-90deg);
}
#note-container .handle {
  color: rgba(60, 60, 60, 0.75);
  border-radius: 5px;
}
#note-container .handle:hover { /* 悬浮半透明背景 */
  background-color: rgba(224, 224, 224, 0.5);
}

.popover-body { /* 这是bootstrap的类 */
  padding: 5px 15px;
}

/* Color Picker */
.pcr-clear {
  background: whitesmoke !important;
  color: black !important;
}
.pcr-clear:focus {
  box-shadow: 0 0 0 1px hsl(0deg 0% 100% / 85%), 0 0 0 3px rgb(245 245 245 / 40%) !important;
}

/* Concept pane */
#concept-container {
  display: flex;
  flex-direction: column;
  height: 100%;
}
#concept-list-container {
  flex: 0;
  margin-bottom: .75rem;
}
#mindmap-container {
  flex: 1;
}
#concept-list-container:empty::after {
  content: 'Loading...';
  color: rgb(185, 194, 204);
  position: absolute;
  left: 16px;
  right: 16px;
  top: 50%;
  text-align: center;
}

.concept-badge {
  cursor: pointer;
}
.concept-badge[selected]:not([active]) {
  box-shadow: 0 0rem 0.3rem 0.15rem #9ec5fed9;
}
.concept-badge[active]:not([selected]) {
  box-shadow: inset 0 0 0 0.2rem #A3CFBB;
}
.concept-badge[active][selected] {
  box-shadow: 0 0rem 0.3rem 0.15rem #9ec5fed9, inset 0 0 0 0.2rem #A3CFBB;
}

jmnode {
  font-size: 12px;
  padding: 5px;
}
jmnode.root {
  font-size: 16px;
  padding: 8px;
}
jmnode:not(.root) {
  cursor: pointer;
}

/* note pane + concept pane layout */
#note-pane-card > .card-body, #concept-pane-card > .card-body {
  overflow: auto;
}
/* #note-pane-card > .card-body::-webkit-scrollbar,
#concept-pane-card > .card-body::-webkit-scrollbar {
  width: 12px;
}
#note-pane-card > .card-body::-webkit-scrollbar-thumb,
#concept-pane-card > .card-body::-webkit-scrollbar-thumb {
  border-radius: 10px;
  background-color: rgb(223, 223, 223);
} */
.gutter.gutter-vertical { /* Created by Split.js */
  cursor: row-resize;
  text-align: center;
  position: relative;
}
.gutter.gutter-vertical::after {
  display: inline-block;
  content: "";
  vertical-align: -.125em;
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%23333" class="bi bi-three-dots" viewBox="0 0 16 16"><path d="M3 9.5a1.5 1.5 0 1 1 0-3 1.5 1.5 0 0 1 0 3zm5 0a1.5 1.5 0 1 1 0-3 1.5 1.5 0 0 1 0 3zm5 0a1.5 1.5 0 1 1 0-3 1.5 1.5 0 0 1 0 3z"/></svg>');
  background-repeat: no-repeat;
  background-size: 1rem 1rem;
  width: 1rem;
  height: 1rem;
}
.gutter.gutter-vertical::before {
  content: '';
  position: absolute;
  top: 5px;
  bottom: 5px;
  left: 0;
  right: 0;
  border-radius: .25rem;
  transition: background-color .3s;
}
.gutter.gutter-vertical:hover::before {
  background-color: rgba(216, 216, 216, 0.25);
}

/* Concept pane sub-concept modal */
#subConceptModal .proposition ~ input[type="checkbox"] {
  margin-left: 0.2rem;
  transform: scale(0.8);
  cursor: pointer;
}

.modal-subtitle {
  font-size: 12px;
}

/* answer pane color picker popover */
#colorjoe-popover {
  background-color: #fff;
  transition: opacity .3s;
  z-index: 100;
}
#colorjoe-popover:not([data-show]) {
  opacity: 0;
  pointer-events: none;
  cursor: inherit;
}
#colorjoe-popover[data-show] {
  opacity: 1;
}
.arrow, .arrow::before {
  position: absolute;
  width: 8px;
  height: 8px;
  background: inherit;
}
.arrow {
  visibility: hidden;
}
.arrow::before {
  visibility: visible;
  content: '';
  transform: rotate(45deg);
}
#colorjoe-popover[data-popper-placement^='top'] > .arrow {
  bottom: -4px;
}
#colorjoe-popover[data-popper-placement^='bottom'] > .arrow {
  top: -4px;
}
#colorjoe-popover[data-popper-placement^='left'] > .arrow {
  right: -4px;
}
#colorjoe-popover[data-popper-placement^='right'] > .arrow {
  left: -4px;
}

/* back to top */
#back-to-top {
  position: fixed;
  bottom: 3rem;
  right: 3rem;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: none;
  text-align: center;
}
#back-to-top div {
  font-size: 20px;
  margin: -5px 0 -10px;
}
#back-to-top span {
  font-size: 12px;
}

/* common */
body.ctrl-down .proposition, body.ctrl-down .note > .content {
  cursor: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%23333" viewBox="0 0 16 16"><path fill-rule="evenodd" d="M1 11.5a.5.5 0 0 0 .5.5h11.793l-3.147 3.146a.5.5 0 0 0 .708.708l4-4a.5.5 0 0 0 0-.708l-4-4a.5.5 0 0 0-.708.708L13.293 11H1.5a.5.5 0 0 0-.5.5zm14-7a.5.5 0 0 1-.5.5H2.707l3.147 3.146a.5.5 0 1 1-.708.708l-4-4a.5.5 0 0 1 0-.708l4-4a.5.5 0 1 1 .708.708L2.707 4H14.5a.5.5 0 0 1 .5.5z"/></svg>'), ew-resize;
}

.placeholder {
  color: rgb(185, 194, 204);
  margin: 1rem 0;
}

.truncate {
  overflow: hidden;
  max-height: 15rem;
  /* display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical; */
}
.truncate.truncate-large {
  max-height: 15rem;
  /* -webkit-line-clamp: 8;
  line-clamp: 8; */
}
.truncate.truncate-small {
  max-height: 5rem;
  /* -webkit-line-clamp: 3;
  line-clamp: 3; */
}

.blink {
  animation: anim-blink .5s linear 1s normal 2;
}
@keyframes anim-blink {
  20%, 80% {
    background-color: rgb(250, 206, 220);
  }
}