phylotree/src/render/styles/phylotree-menus.css

A JavaScript library for developing applications and interactive visualizations involving [phylogenetic trees](https://en.wikipedia.org/wiki/Phylogenetic_tree), written as an extension of the [D3](http://d3js.org) [hierarchy layout](https://github.com/d3/

/**
 * phylotree-menus.css - Standalone menu styles (no Bootstrap dependency)
 *
 * This file provides native styling for phylotree context menus.
 * Include this CSS file to use menus without Bootstrap.
 */

.phylotree-context-menu {
  position: absolute;
  display: none;
  min-width: 160px;
  padding: 8px 0;
  margin: 0;
  background-color: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 4px;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
  z-index: 1000;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  color: #212529;
  list-style: none;
}

.phylotree-menu-item {
  display: block;
  padding: 6px 20px;
  color: #212529;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  background-color: transparent;
  border: none;
  width: 100%;
  text-align: left;
  box-sizing: border-box;
}

.phylotree-menu-item:hover,
.phylotree-menu-item:focus {
  background-color: #f8f9fa;
  color: #16181b;
  outline: none;
}

.phylotree-menu-item:active {
  background-color: #e9ecef;
}

.phylotree-menu-divider {
  height: 0;
  margin: 8px 0;
  overflow: hidden;
  border-top: 1px solid #e9ecef;
}

.phylotree-menu-header {
  display: block;
  padding: 6px 20px;
  margin-bottom: 0;
  font-size: 12px;
  font-weight: 600;
  color: #6c757d;
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Selection set color indicators */
.phylotree-set-indicator {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
}

/* Animation for menu appearance */
.phylotree-context-menu[style*="display: block"] {
  animation: phylotree-menu-fade-in 0.15s ease-out;
}

@keyframes phylotree-menu-fade-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}