wekan/client/components/swimlanes/swimlanes.css

.swimlane.js-lists{
  background: #dedede;
  display: flex;
  overflow: auto;
  flex-direction: row;
  box-sizing: border-box;
  height: var(--swimlane-height, auto);
  min-height: var(--swimlane-min-height, 200px);
}

body.mobile-mode .swimlane {
  display: flex;
  flex-direction: column;
  width: 100%;
  .swimlane-header {
    font-size: var(--header-scale);
  }
}

.swimlane-container {
  background-color: #ccc;
  display: flex;
  flex: 1;
  flex-direction: column;
  /* default to the same as lists to avoid contrast with the handle */
  background: #dedede;
}
.swimlane.placeholder {
  background-color: rgba(0,0,0,0.2);
  border-color: transparent;
  box-shadow: none;
  height: 15vh;
}
.swimlane.ui-sortable-helper {
  box-shadow: -0.3vw 0.3vh 1vh rgba(0,0,0,0.3), 0 0 0.1vw rgba(0,0,0,0.5);
  transform: rotate(2deg);
  cursor: grabbing;
}
.swimlane.ui-sortable-helper .swimlane-header.ui-sortable-handle {
  cursor: grabbing;
}
.swimlane .swimlane-header-wrap {
  overflow: hidden;
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: space-between;
  height: max-content;
  padding: 0.5lh 1ch;
  background-color: #ccc;

  position: sticky;
  left: 0;
  p {
    margin: 0;
  }
}

.swimlane .swimlane-header-wrap .swimlane-header {
  font-weight: bold;
  overflow: hidden;
  -o-text-overflow: ellipsis;
  text-overflow: ellipsis;
  overflow-wrap: break-word;
  z-index: 10;
  pointer-events: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1.2;
}

.swimlane {
  .swimlane-header-menu-right, .swimlane-header-menu-left {
    display: inline-flex;
    align-content: center;
    gap: 2ch;
  }
  /* can't resize beyond that point, but resizing screen causes
  overflow, which is great because lists would shrink too much otherwise */
  max-width: 100vw;
}

@media print {
  .swimlane .swimlane-header-wrap .swimlane-header-menu-right {
    display: none;
  }
}

.swimlane .swimlane-header-wrap .swimlane-header-handle {
  cursor: move;
  pointer-events: auto;
  color: #a6a6a6;
}
.swimlane .swimlane-header-wrap .swimlane-header-menu-right .swimlane-collapse-indicator:hover {
  background-color: transparent;
  color: #333;
}

.swimlane .swimlane-header-wrap .swimlane-header-menu .js-open-swimlane-menu:hover {
  color: #333;
}

.swimlane .swimlane-header-wrap .swimlane-header-plus-icon:hover {
  color: #333;
}

.swimlane .swimlane-header-wrap .swimlane-header-handle:hover,
.swimlane .swimlane-header-wrap .swimlane-header-miniscreen-handle:hover {
  color: #333;
}

#js-swimlane-height-edit .swimlane-height-error {
  display: none;
}
.list-group {
  height: 100%;
}
.moving-swimlane {
  display: none;
}
.swimlane-white {
  background: #fff !important;
  color: #4d4d4d !important;
  border: 1px solid #eee;
}
.swimlane-green {
  background: #3cb500 !important;
  color: #fff !important;
}
.swimlane-yellow {
  background: #fad900 !important;
  color: #4d4d4d !important;
}
.swimlane-orange {
  background: #ff9f19 !important;
  color: #4d4d4d !important;
}
.swimlane-red {
  background: #eb4646 !important;
  color: #fff !important;
}
.swimlane-purple {
  background: #a632db !important;
  color: #fff !important;
}
.swimlane-blue {
  background: #0079bf !important;
  color: #fff !important;
}
.swimlane-pink {
  background: #ff78cb !important;
  color: #4d4d4d !important;
}
.swimlane-sky {
  background: #00c2e0 !important;
  color: #fff !important;
}
.swimlane-black {
  background: #4d4d4d !important;
  color: #fff !important;
}
.swimlane-lime {
  background: #51e898 !important;
  color: #4d4d4d !important;
}
.swimlane-silver {
  background: #ccc !important;
  color: #4d4d4d !important;
}
.swimlane-peachpuff {
  background: #ffdab9 !important;
  color: #4d4d4d !important;
}
.swimlane-crimson {
  background: #dc143c !important;
  color: #fff !important;
}
.swimlane-plum {
  background: #dda0dd !important;
  color: #4d4d4d !important;
}
.swimlane-darkgreen {
  background: #006400 !important;
  color: #fff !important;
}
.swimlane-slateblue {
  background: #6a5acd !important;
  color: #fff !important;
}
.swimlane-magenta {
  background: #f0f !important;
  color: #fff !important;
}
.swimlane-gold {
  background: #ffd700 !important;
  color: #4d4d4d !important;
}
.swimlane-navy {
  background: #000080 !important;
  color: #fff !important;
}
.swimlane-gray {
  background: #808080 !important;
  color: #fff !important;
}
.swimlane-saddlebrown {
  background: #8b4513 !important;
  color: #fff !important;
}
.swimlane-paleturquoise {
  background: #afeeee !important;
  color: #4d4d4d !important;
}
.swimlane-mistyrose {
  background: #ffe4e1 !important;
  color: #4d4d4d !important;
}
.swimlane-indigo {
  background: #4b0082 !important;
  color: #fff !important;
}

body.mobile-mode {
  .swimlane-resize-handle {
    height: 2ch;
    :active {
      background: rgba(0, 123, 255, 0.4) !important;
    }
  }
}
body.mobile-mode {
  .swimlane-resize-handle {
    height: 1lh;
  }
}
/* Swimlane resize handle */
.swimlane-resize-handle {
  height: max(0.7ch, 0.3lh);
  cursor: row-resize;
  border-top: 2px solid transparent;
  transition: all 0.2s ease;
  border-radius: 2px;
  /* Ensure the handle is clickable */
  pointer-events: auto;
  /* Prevent scrolling behaviour on click */
  touch-action: none;
  background: rgba(0, 0, 0, 0.1);
  box-sizing: border-box;
}

/* Add a subtle indicator line */
.swimlane-resize-handle::before {
  content: '';
  position: absolute;
  left: 50vw;
  width: 20px;
  height: 1px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 5px;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.swimlane.swimlane-resizing + .swimlane-resize-handle:hover::before, .swimlane-resize-handle:hover::before {
  opacity:1;
}

.swimlane:not(.cannot-resize) {
  /* Add a subtle resize indicator line at the bottom of swimlane on hover */
  &:hover + .swimlane-resize-handle, + .swimlane-resize-handle:hover {
    border-top: 1px solid rgba(0, 123, 255, 0.5);
    background: rgba(0, 123, 255, 0.2);
    border-radius: 0;
  }
}

.swimlane.swimlane-resizing + .swimlane-resize-handle {
  background: rgba(0, 123, 255, 0.4) !important;
}

.swimlane.cannot-resize + .swimlane-resize-handle {
  background: rgba(227, 64, 83, 0.5) !important;
  border-radius: 0;
}

body.swimlane-resizing-active {
  cursor: row-resize !important;
  user-select: none !important;
}

body.swimlane-resizing-active * {
  cursor: row-resize !important;
  user-select: none !important;
}