helios-editor/editor.css

A comprehensive React rich text editor component with image upload, resize functionality, and standalone CSS. Ready for NPM publishing.

/* DZ Rich Text Editor - Core CSS */

/**
 * Base reset to ensure consistent styling in standalone implementations
 */
.dz-editor-reset * {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
}

/* Standalone container */
.dz-editor-container {
  width: 100%;
  max-width: 100%;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
}

/* Editor wrapper */
.editor-wrapper {
  border: 1px solid #d1d5db;
  border-radius: 0.375rem;
  background-color: white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  font-size: 16px;
  margin: 0;
  padding: 0;
  max-width: 100%;
}

/* Toolbar styles */
.editor-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem;
  padding: 0.375rem;
  border-bottom: 1px solid #e5e7eb;
  background-color: #f9fafb;
  border-top-left-radius: 0.375rem;
  border-top-right-radius: 0.375rem;
}

/* Button groups for consistent spacing */
.button-group {
  display: inline-flex;
  margin-right: 0.5rem;
}

/* Add separator between button groups */
.toolbar-separator {
  width: 1px;
  height: 20px;
  background-color: #e5e7eb;
  margin: 0 0.5rem;
  display: inline-block;
  align-self: center;
}

/* Content area */
.editor-content {
  padding: 1rem;
  outline: none;
  overflow-y: auto;
  min-height: 100px;
  background-color: white;
  color: #1f2937;
  font-size: 1rem;
  line-height: 1.5;
  border-bottom-left-radius: 0.375rem;
  border-bottom-right-radius: 0.375rem;
}

/* Placeholder styles for contenteditable */
[contenteditable][data-placeholder]:empty:before {
  content: attr(data-placeholder);
  color: #9ca3af;
  pointer-events: none;
  position: absolute;
}

/* Selection styles */
::selection {
  background-color: #dbeafe;
  color: #1e3a8a;
}

/* Button Styles */
.toolbar-btn,
.alignment-btn {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  border: 1px solid #d1d5db;
  border-radius: 0.25rem;
  background-color: white;
  color: #374151;
  transition: all 0.15s ease-in-out;
  height: 30px;
  min-width: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* Format buttons (B, I, U, S) */
.format-btn {
  width: 30px;
  padding: 0;
}

.format-btn.bold {
  font-weight: bold;
}

.format-btn.italic {
  font-style: italic;
}

.format-btn.underline {
  text-decoration: underline;
}

.format-btn.strikethrough {
  text-decoration: line-through;
}

/* Icon buttons */
.icon-btn {
  width: 30px;
  height: 30px;
  padding: 0;
  font-size: 16px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Special buttons */
.color-btn {
  position: relative;
  overflow: hidden;
}

.color-btn::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background-color: currentColor;
}

/* Toolbar button hover state */
.toolbar-btn:hover,
.alignment-btn:hover {
  background-color: #f3f4f6;
  border-color: #9ca3af;
}

.toolbar-btn:focus,
.alignment-btn:focus {
  outline: none;
  box-shadow: 0 0 0 2px #3b82f6;
  border-color: #3b82f6;
}

/* Button active state */
.toolbar-btn-active,
.alignment-btn.active {
  background-color: #dbeafe;
  border-color: #60a5fa;
  color: #1d4ed8;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

/* Alignment button group */
.alignment-group {
  display: inline-flex;
  align-items: center;
  margin-right: 4px;
}

.alignment-group .alignment-btn {
  border-radius: 0;
  border-right-width: 0;
  margin: 0;
}

.alignment-group .alignment-btn:first-child {
  border-top-left-radius: 0.25rem;
  border-bottom-left-radius: 0.25rem;
}

.alignment-group .alignment-btn:last-child {
  border-top-right-radius: 0.25rem;
  border-bottom-right-radius: 0.25rem;
  border-right-width: 1px;
}

/* Dropdown System */
.dropdown-container {
  position: relative;
  display: inline-block;
}

/* Wide dropdown for headings, font family, line spacing, and bullet list */
.wide-dropdown {
  min-width: 140px;
  margin-right: 4px;
}

.dropdown-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.375rem 0.75rem;
  background-color: #ffffff;
  border: 1px solid #d1d5db;
  border-radius: 0.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: #374151;
  cursor: pointer;
  transition: all 0.15s ease-in-out;
  height: 30px;
  min-width: 100%;
  text-align: left;
}

.dropdown-trigger:hover {
  background-color: #f9fafb;
  border-color: #9ca3af;
}

.dropdown-trigger.active {
  background-color: #dbeafe;
  border-color: #60a5fa;
  color: #1d4ed8;
}

.dropdown-arrow {
  transition: transform 0.2s ease-in-out;
  font-size: 0.75rem;
  opacity: 0.7;
}

.dropdown-trigger.active .dropdown-arrow {
  transform: rotate(180deg);
  opacity: 1;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 0.25rem);
  left: 0;
  right: 0;
  min-width: 12rem;
  max-width: 240px;
  width: 100%;
  background: #ffffff;
  border: 1px solid #d1d5db;
  border-radius: 0.25rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  z-index: 60;
  overflow: hidden;
  animation: dropdownSlideIn 0.2s ease-out;
  transform-origin: top;
}

/* Make dropdown menu at least as wide as its container for wide dropdowns */
.wide-dropdown .dropdown-menu {
  min-width: 100%;
  max-width: none;
}

@keyframes dropdownSlideIn {
  from {
    opacity: 0;
    transform: translateY(-8px) scale(0.95);
    filter: blur(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0px);
  }
}

.dropdown-item {
  display: block;
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  color: #374151;
  text-align: left;
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background-color 0.15s ease-in-out;
  border-bottom: 1px solid #e5e7eb;
  position: relative;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dropdown-item:last-child {
  border-bottom: none;
}

.dropdown-item:hover {
  background-color: #f3f4f6;
}

.dropdown-item.active {
  background-color: #dbeafe;
  color: #1d4ed8;
}

/* List style specific items */
.list-style-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.list-style-disc::before {
  content: "•";
  display: inline-block;
  width: 12px;
  font-weight: bold;
}

.list-style-circle::before {
  content: "○";
  display: inline-block;
  width: 12px;
  font-weight: bold;
}

.list-style-square::before {
  content: "■";
  display: inline-block;
  width: 12px;
  font-weight: bold;
  font-size: 0.7em;
}

/* Font family specific styling */
.dropdown-item.font-preview {
  font-family: var(--font-family);
  font-weight: 500;
}

/* Sticky toolbar styles */
.editor-toolbar-sticky {
  box-shadow: 0 2px 8px -2px rgba(0, 0, 0, 0.1), 0 4px 16px -4px rgba(0, 0, 0, 0.05);
  background-color: rgba(249, 250, 251, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-left: none;
  border-right: none;
  border-top: none;
}

/* Enhanced backdrop blur support for better browser compatibility */
@supports (backdrop-filter: blur(12px)) {
  .editor-toolbar-sticky {
    background-color: rgba(249, 250, 251, 0.9);
  }
}

/* Fallback for browsers without backdrop-filter support */
@supports not (backdrop-filter: blur(12px)) {
  .editor-toolbar-sticky {
    background-color: rgba(249, 250, 251, 0.98);
  }
}

/* Ensure toolbar buttons maintain proper spacing in sticky mode */
.editor-toolbar-sticky .dropdown-container {
  position: relative;
}

.editor-toolbar-sticky .dropdown-menu {
  position: absolute;
  z-index: 1001;
}

/* Modal backdrop */
.modal-backdrop {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: radial-gradient(circle at center, rgba(99, 102, 241, 0.15), rgba(0, 0, 0, 0.7));
  backdrop-filter: blur(12px) saturate(200%) brightness(110%);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: backdropFadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes backdropFadeIn {
  from {
    opacity: 0;
    backdrop-filter: blur(0px) saturate(100%) brightness(100%);
    transform: scale(1.02);
  }
  to {
    opacity: 1;
    backdrop-filter: blur(12px) saturate(200%) brightness(110%);
    transform: scale(1);
  }
}

/* Compact Modal System */
.compact-modal {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.95));
  padding: 1.25rem;
  border-radius: 1rem;
  box-shadow: 
    0 20px 25px -5px rgba(0, 0, 0, 0.15),
    0 10px 10px -5px rgba(0, 0, 0, 0.04),
    0 0 0 1px rgba(255, 255, 255, 0.2),
    0 4px 16px rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(20px) saturate(180%);
  animation: compactModalSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  transform-origin: center;
  min-width: 280px;
  max-width: 90vw;
}

.compact-modal h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 1rem;
  text-align: center;
  letter-spacing: -0.01em;
}

/* Compact Form Styles */
.compact-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.compact-input {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1.5px solid #e5e7eb;
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.9);
  font-size: 0.875rem;
  transition: all 0.15s ease-in-out;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.04);
}

/* Compact Actions */
.compact-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 1rem;
}

/* Compact Buttons */
.btn-compact-primary {
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  color: white;
  border-radius: 0.5rem;
  border: none;
  font-weight: 600;
  font-size: 0.8rem;
  transition: all 0.15s ease-in-out;
  box-shadow: 0 2px 4px rgba(59, 130, 246, 0.3);
  cursor: pointer;
}

.btn-compact-secondary {
  padding: 0.5rem 1rem;
  color: #6b7280;
  border: 1.5px solid #e5e7eb;
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.8);
  font-weight: 500;
  font-size: 0.8rem;
  transition: all 0.15s ease-in-out;
  cursor: pointer;
}

/* Rich Text Editor content styles */
.prose {
  max-width: none;
  color: #111827;
}

.prose h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  margin-top: 1.5rem;
  color: #111827;
}

.prose h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  margin-top: 1.25rem;
  color: #111827;
}

.prose h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  margin-top: 1rem;
  color: #111827;
}

.prose h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  margin-top: 0.75rem;
  color: #111827;
}

.prose p {
  margin-bottom: 0.75rem;
  line-height: 1.625;
  color: #1f2937;
}

.prose ul {
  list-style-type: disc;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
}

.prose ul > li {
  margin-bottom: 0.25rem;
}

.prose ol {
  list-style-type: decimal;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
}

.prose ol > li {
  margin-bottom: 0.25rem;
}

.prose blockquote {
  border-left: 4px solid #d1d5db;
  padding-left: 1rem;
  font-style: italic;
  margin: 1rem 0;
  color: #4b5563;
  background-color: #f9fafb;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

.prose pre {
  background-color: #111827;
  color: #f9fafb;
  padding: 1rem;
  border-radius: 0.5rem;
  font-family: monospace;
  font-size: 0.875rem;
  overflow-x: auto;
  margin: 0.75rem 0;
}

.prose code {
  background-color: #f3f4f6;
  color: #1f2937;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  font-size: 0.875rem;
  font-family: monospace;
}

.prose a {
  color: #2563eb;
  text-decoration: underline;
  transition: color 0.15s ease-in-out;
}

.prose a:hover {
  color: #1e40af;
}

/* Print styles */
@media print {
  .editor-toolbar {
    display: none;
  }
  
  .prose div[style*="page-break-after"] {
    page-break-after: always;
    border: none;
  }
}

/* Responsive styles */
@media (max-width: 768px) {
  .editor-toolbar {
    padding: 0.25rem;
    gap: 0.125rem;
  }
  
  .toolbar-btn,
  .alignment-btn,
  .dropdown-trigger {
    padding: 0.25rem 0.5rem;
    font-size: 0.8125rem;
  }
  
  .wide-dropdown {
    min-width: 120px;
  }
  
  .button-group {
    margin-right: 0.25rem;
  }
  
  .toolbar-separator {
    margin: 0 0.25rem;
  }
}

@media (max-width: 480px) {
  .editor-toolbar {
    padding: 0.25rem 0.125rem;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 0.125rem;
  }
  
  .toolbar-btn,
  .alignment-btn,
  .format-btn,
  .icon-btn {
    width: 28px;
    height: 28px;
    min-width: 28px;
    font-size: 0.75rem;
    padding: 0;
  }
  
  .dropdown-trigger {
    height: 28px;
    padding: 0.25rem 0.375rem;
    font-size: 0.75rem;
  }
  
  .wide-dropdown {
    min-width: 100px;
  }
  
  /* Stack buttons in two rows on very small screens */
  .button-group.formatting {
    order: 1;
  }
  
  .wide-dropdown {
    order: 2;
  }
  
  .alignment-group {
    order: 3;
  }
}

/* Link Hover Tooltip Styles */
.link-tooltip {
  position: fixed;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.95));
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 8px;
  box-shadow: 
    0 10px 25px -5px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05),
    0 0 0 1px rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
  z-index: 10000;
  animation: tooltipFadeIn 0.2s ease-out;
  max-width: 300px;
  min-width: 200px;
}

.link-tooltip-content {
  padding: 12px;
}

.link-url {
  font-size: 0.875rem;
  color: #1f2937;
  font-weight: 500;
  margin-bottom: 8px;
  word-break: break-all;
  line-height: 1.4;
}

.link-hint {
  font-size: 0.75rem;
  color: #6b7280;
  font-style: italic;
  margin-top: 8px;
  text-align: center;
}

@keyframes tooltipFadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Enhanced link styling in editor */
.editor-content a {
  color: #2563eb;
  text-decoration: underline;
  transition: all 0.15s ease-in-out;
  position: relative;
  cursor: pointer;
}

.editor-content a:hover {
  color: #1d4ed8;
  text-decoration: underline;
  background-color: rgba(59, 130, 246, 0.1);
  border-radius: 3px;
  padding: 1px 2px;
  margin: -1px -2px;
}

/* Add visual hint for Ctrl+Click */
.editor-content a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, #3b82f6, transparent);
  opacity: 0;
  transition: opacity 0.2s ease-in-out;
}

.editor-content a:hover::after {
  opacity: 0.6;
}

/* Link tooltip positioning adjustments */
.link-tooltip {
  transform-origin: top left;
}

/* Ensure tooltip doesn't go off-screen */
.link-tooltip[data-position="top"] {
  transform: translateY(-100%);
  margin-top: -8px;
}

.link-tooltip[data-position="bottom"] {
  transform: translateY(0);
  margin-top: 8px;
}