brainmap.js/brainmap.css

A beautiful, interactive, and themeable mindmap library for creating hierarchical visualizations with editing capabilities

/**
 * Brainmap.js - CSS Styles
 * A beautiful, interactive mindmap library
 */

:root {
  /* Theme Variables */
  --mindmap-bg-primary: #9696c2;
  --mindmap-bg-secondary: #ffffff;

  --mindmap-color-root: linear-gradient(135deg, #f97316 0%, #dc2626 100%);
  --mindmap-color-root-stroke: #dc2626;
  --mindmap-color-root-text: #ffffff;

  --mindmap-color-branch: linear-gradient(135deg, #34d399 0%, #059669 100%);
  --mindmap-color-branch-stroke: #059669;
  --mindmap-color-branch-text: #065f46;

  --mindmap-color-leaf: linear-gradient(135deg, #60a5fa 0%, #1d4ed8 100%);
  --mindmap-color-leaf-stroke: #2563eb;
  --mindmap-color-leaf-text: #1e40af;

  --mindmap-color-link: rgba(255, 255, 255, 0.6);
  --mindmap-color-text: #333333;
  --mindmap-color-hover-shadow: rgba(0, 0, 0, 0.3);

  --mindmap-radius-root: 12px;
  --mindmap-radius-branch: 7px;
  --mindmap-radius-leaf: 8px;
  --mindmap-stroke-width: 2;

  --mindmap-font-size-root: 14px;
  --mindmap-font-size-branch: 12px;
  --mindmap-font-size-leaf: 11px;
  --mindmap-font-weight-normal: 600;
  --mindmap-font-weight-bold: 700;

  --mindmap-transition: all 0.2s ease;
  --mindmap-shadow-hover: 0 6px 12px rgba(37, 99, 235, 0.4);
  --mindmap-shadow-default: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.mindmap-container {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu,
    "Helvetica Neue", Arial, sans-serif;
  position: relative;
  width: 100%;
  height: 100%;
  background: var(--mindmap-bg-primary);
  overflow: hidden;
  /* Touch improvements */
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  touch-action: none;
}

.mindmap-svg {
  width: 100%;
  height: 100%;
  cursor: grab;
}

.mindmap-svg.editing {
  cursor: default;
}

.mindmap-node circle {
  stroke-width: var(--mindmap-stroke-width);
  transition: var(--mindmap-transition);
  filter: drop-shadow(var(--mindmap-shadow-default));
}

.mindmap-node.root circle {
  fill: url(#mindmapRootGradient);
  stroke: var(--mindmap-color-root-stroke);
  stroke-width: 3;
}

.mindmap-node.branch circle {
  fill: url(#mindmapBranchGradient);
  stroke: var(--mindmap-color-branch-stroke);
}

.mindmap-node.leaf circle {
  fill: url(#mindmapLeafGradient);
  stroke: var(--mindmap-color-leaf-stroke);
}

.mindmap-node:hover circle {
  transform: scale(1.2);
  filter: drop-shadow(var(--mindmap-shadow-hover));
}

.mindmap-node.editing circle {
  stroke-width: 3;
  stroke-dasharray: 5, 5;
  animation: mindmap-dash 1s linear infinite;
}

.mindmap-node.long-pressing circle {
  stroke-width: 4;
  filter: drop-shadow(0 0 8px rgba(59, 130, 246, 0.8));
  animation: mindmap-pulse 0.5s ease-in-out;
}

@keyframes mindmap-dash {
  to {
    stroke-dashoffset: -10;
  }
}

@keyframes mindmap-pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

.mindmap-node text {
  text-anchor: middle;
  dominant-baseline: middle;
  pointer-events: none;
  fill: var(--mindmap-color-text);
  font-weight: var(--mindmap-font-weight-normal);
  transition: var(--mindmap-transition);
}

.mindmap-node.root text {
  font-size: var(--mindmap-font-size-root);
  fill: var(--mindmap-color-root-text);
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
  font-weight: var(--mindmap-font-weight-bold);
}

.mindmap-node.branch text {
  font-size: var(--mindmap-font-size-branch);
  fill: var(--mindmap-color-branch-text);
}

.mindmap-node.leaf text {
  font-size: var(--mindmap-font-size-leaf);
  fill: var(--mindmap-color-leaf-text);
  font-weight: var(--mindmap-font-weight-bold);
}

/* Touch enhancements */
@media (hover: none) and (pointer: coarse) {
  /* Larger touch targets on mobile */
  .mindmap-node circle {
    r: 15; /* Larger radius for easier touching */
  }
  
  .mindmap-node.root circle {
    r: 18;
  }
  
  .mindmap-node.branch circle {
    r: 12;
  }
  
  .mindmap-node.leaf circle {
    r: 14;
  }
  
  /* Remove hover effects on touch devices */
  .mindmap-node:hover circle {
    transform: none;
    filter: drop-shadow(var(--mindmap-shadow-default));
  }
  
  /* Larger control buttons for touch */
  .mindmap-control-btn {
    padding: 12px 16px;
    font-size: 14px;
    min-height: 44px; /* iOS recommended touch target size */
    min-width: 44px;
  }
}

/* Disable selection on all mindmap elements */
.mindmap-container * {
  -webkit-tap-highlight-color: transparent;
}

.mindmap-link {
  stroke: var(--mindmap-color-link);
  stroke-width: 2;
  fill: none;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
}

/* Editing Input */
.mindmap-edit-input {
  position: absolute;
  padding: 4px 8px;
  border: 2px solid var(--mindmap-color-leaf-stroke);
  border-radius: 4px;
  background: var(--mindmap-bg-secondary);
  font-family: inherit;
  font-size: 12px;
  font-weight: var(--mindmap-font-weight-normal);
  text-align: center;
  z-index: 1000;
  box-shadow: var(--mindmap-shadow-hover);
}

/* Context Menu */
.mindmap-context-menu {
  position: absolute;
  background: var(--mindmap-bg-secondary);
  border-radius: 8px;
  box-shadow: var(--mindmap-shadow-hover);
  z-index: 1001;
  min-width: 180px;
  border: 1px solid #e5e7eb;
}

.mindmap-context-menu-item {
  padding: 12px 16px;
  cursor: pointer;
  transition: var(--mindmap-transition);
  font-size: 14px;
  border-bottom: 1px solid #f3f4f6;
}

.mindmap-context-menu-item:last-child {
  border-bottom: none;
}

.mindmap-context-menu-item:hover {
  background: #f9fafb;
  color: var(--mindmap-color-leaf-stroke);
}

.mindmap-context-menu-item.dangerous {
  color: #dc2626;
}

.mindmap-context-menu-item.dangerous:hover {
  background: #fee2e2;
  color: #991b1b;
}

/* Custom Modal */
.mindmap-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  backdrop-filter: blur(2px);
  animation: mindmap-modal-fade-in 0.2s ease-out;
}

.mindmap-modal {
  background: var(--mindmap-bg-secondary);
  border-radius: 12px;
  padding: 24px;
  min-width: 320px;
  max-width: 90vw;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  animation: mindmap-modal-slide-in 0.3s ease-out;
}

.mindmap-modal-title {
  font-size: 18px;
  font-weight: var(--mindmap-font-weight-bold);
  color: var(--mindmap-color-text);
  margin: 0 0 16px 0;
  text-align: center;
}

.mindmap-modal-input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  margin-bottom: 20px;
  transition: var(--mindmap-transition);
  box-sizing: border-box;
}

.mindmap-modal-input:focus {
  outline: none;
  border-color: var(--mindmap-color-leaf-stroke);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.mindmap-modal-buttons {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

.mindmap-modal-btn {
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: var(--mindmap-font-weight-normal);
  cursor: pointer;
  transition: var(--mindmap-transition);
  min-height: 40px;
  min-width: 80px;
}

.mindmap-modal-btn.primary {
  background: var(--mindmap-color-leaf-stroke);
  color: white;
}

.mindmap-modal-btn.primary:hover {
  background: var(--mindmap-color-leaf-text);
  transform: translateY(-1px);
}

.mindmap-modal-btn.secondary {
  background: #f3f4f6;
  color: var(--mindmap-color-text);
  border: 1px solid #d1d5db;
}

.mindmap-modal-btn.secondary:hover {
  background: #e5e7eb;
  transform: translateY(-1px);
}

@keyframes mindmap-modal-fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes mindmap-modal-slide-in {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Mobile optimizations for modal */
@media (max-width: 480px) {
  .mindmap-modal {
    margin: 20px;
    min-width: calc(100vw - 40px);
    max-width: calc(100vw - 40px);
    padding: 20px;
  }

  .mindmap-modal-title {
    font-size: 16px;
  }

  .mindmap-modal-input {
    font-size: 16px; /* Prevents zoom on iOS */
    padding: 14px 16px;
  }

  .mindmap-modal-buttons {
    flex-direction: column-reverse;
    gap: 8px;
  }

  .mindmap-modal-btn {
    width: 100%;
    padding: 12px 20px;
    min-height: 44px;
  }
}

/* Controls */
.mindmap-controls {
  position: absolute;
  top: 20px;
  right: 20px;
  display: flex;
  gap: 10px;
  z-index: 999;
}

.mindmap-control-btn {
  padding: 8px 12px;
  background: var(--mindmap-bg-secondary);
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  transition: var(--mindmap-transition);
  box-shadow: var(--mindmap-shadow-default);
}

.mindmap-control-btn:hover {
  background: #f3f4f6;
  transform: translateY(-1px);
}

.mindmap-status {
  position: absolute;
  bottom: 20px;
  left: 20px;
  background: rgba(255, 255, 255, 0.9);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  color: var(--mindmap-color-text);
  box-shadow: var(--mindmap-shadow-default);
}

/* Dark theme variant */
.mindmap-container.dark {
  --mindmap-bg-primary: linear-gradient(135deg, #1f2937 0%, #111827 100%);
  --mindmap-bg-secondary: #374151;
  --mindmap-color-text: #f9fafb;
  --mindmap-color-link: rgba(156, 163, 175, 0.6);
}

/* Compact theme variant */
.mindmap-container.compact {
  --mindmap-radius-root: 8px;
  --mindmap-radius-branch: 5px;
  --mindmap-radius-leaf: 6px;
  --mindmap-font-size-root: 12px;
  --mindmap-font-size-branch: 10px;
  --mindmap-font-size-leaf: 9px;
}