:root {
  --word-font-family: "Consolas", serif;
}
#document-container {
  display: flex;
  justify-content: center;
  padding: 20px 0;
  min-height: calc(100vh - 96px);
}

#document {
  width: 100%;
  max-width: 900px;
  padding: 0 20px;
}

.a4-page {
  background-color: white;
  width: 100%;
  min-height: 29.7cm;
  padding: 40px 50px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  border-radius: 4px;
  margin-bottom: 20px;
}

#content-area {
  width: 100%;
}

.paragraph {
  margin-bottom: 16px;
  padding: 8px;
  border-radius: 4px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.paragraph:hover {
  background-color: rgba(25, 118, 210, 0.05);
}

.paragraph.active {
  background-color: rgba(25, 118, 210, 0.1);
  border: 2px solid var(--jp-brand-color1);
  padding: 6px;
}

.paragraph.moving-up {
  animation: moveUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.paragraph.moving-down {
  animation: moveDown 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes moveUp {
  0% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
  100% {
    transform: translateY(0);
  }
}

@keyframes moveDown {
  0% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(10px);
  }
  100% {
    transform: translateY(0);
  }
}

.text-paragraph {
  font-family: var(--font-family);
  font-size: 14px;
  line-height: 1.8;
  color: var(--jp-ui-font-color0);
}

.text-paragraph textarea {
  width: 100%;
  min-height: 40px;
  border: 1px solid transparent;
  resize: vertical;
  font-family: var(--font-family);
  font-size: 14px;
  line-height: 1.8;
  background: transparent;
  outline: none;
  padding: 4px;
  border-radius: 4px;
}

.text-paragraph textarea:focus {
  border-color: var(--jp-brand-color1);
  background-color: white;
}

.text-paragraph .text-render {
  padding: 4px;
  min-height: 40px;
  overflow: auto;
}

.sympy-paragraph .code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  padding: 4px 8px;
  background-color: var(--jp-layout-color1);
  border-radius: 4px;
  font-size: 12px;
}

.sympy-paragraph .code-label {
  color: var(--jp-brand-color0);
  font-weight: 600;
}

.sympy-paragraph .code-actions {
  display: flex;
  gap: 8px;
}

.sympy-paragraph .code-actions button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--jp-ui-font-color1);
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 3px;
  transition: all 0.2s;
}

.sympy-paragraph .code-actions button:hover {
  background-color: var(--jp-layout-color2);
  color: var(--jp-ui-font-color0);
}

.sympy-paragraph .code-input {
  width: 100%;
  padding: 12px;
  background-color: var(--jp-layout-color1);
  border: 1px solid var(--jp-border-color1);
  border-radius: 4px;
  font-family: var(--word-font-family);
  font-size: 13px;
  line-height: 1.6;
  resize: vertical;
  min-height: 60px;
  outline: none;
}

.sympy-paragraph .code-input:focus {
  border-color: var(--jp-brand-color1);
}

.sympy-paragraph .code-input.collapsed {
  display: none;
}

.sympy-paragraph .code-output {
  margin-top: 12px;
  padding: 16px;
  background-color: var(--jp-cell-output-background);
  border: 1px dashed var(--jp-border-color1);
  border-radius: 4px;
  min-height: 48px;
  font-size: 15px;
}

.sympy-paragraph .code-output:empty {
  display: none;
}

.sympy-paragraph .code-output.collapsed {
  display: none;
}

.sympy-paragraph .run-button {
  background-color: var(--jp-success-color);
  color: white;
  border: none;
  padding: 4px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  transition: all 0.2s;
}

.sympy-paragraph .run-button:hover {
  background-color: #388e3c;
  transform: scale(1.05);
}

.sympy-paragraph .run-button:disabled {
  background-color: var(--jp-border-color1);
  cursor: not-allowed;
  transform: none;
}

.latex-paragraph .latex-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  padding: 4px 8px;
  background-color: var(--jp-layout-color1);
  border-radius: 4px;
  font-size: 12px;
}

.latex-paragraph .latex-label {
  color: #952d8b;
  font-weight: 600;
}

.latex-paragraph .latex-actions {
  display: flex;
  gap: 8px;
}

.latex-paragraph .latex-actions button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--jp-ui-font-color1);
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 3px;
  transition: all 0.2s;
}

.latex-paragraph .latex-actions button:hover {
  background-color: var(--jp-layout-color2);
  color: var(--jp-ui-font-color0);
}

.latex-paragraph .latex-input {
  width: 100%;
  padding: 12px;
  background-color: var(--jp-layout-color1);
  border: 1px solid var(--jp-border-color1);
  border-radius: 4px;
  font-family: var(--word-font-family);
  font-size: 13px;
  line-height: 1.6;
  resize: vertical;
  min-height: 60px;
  outline: none;
}

.latex-paragraph .latex-input:focus {
  border-color: #952d8b;
}

.latex-paragraph .latex-input.collapsed {
  display: none;
}

.latex-paragraph .latex-render {
  margin-top: 12px;
  padding: 16px;
  background-color: var(--jp-cell-output-background);
  border: 1px dashed var(--jp-border-color1);
  border-radius: 4px;
  min-height: 48px;
  font-size: 15px;
  text-align: center;
  max-height: 280px;
  overflow: auto;
}

.latex-paragraph .latex-render.collapsed {
  display: none;
}

.latex-paragraph .render-button {
  background-color: #952d8b;
  color: white;
  border: none;
  padding: 4px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  transition: all 0.2s;
}

.latex-paragraph .render-button:hover {
  background-color: #7a2470;
  transform: scale(1.05);
}

#toolbar {
  flex-wrap: wrap;
  gap: 4px;
}

.toolbar-section {
  display: flex;
  gap: 4px;
  align-items: center;
}

.toolbar-button {
  padding: 6px 10px;
  font-family: var(--word-font-family);
  font-size: 12px;
}

.toolbar-button span {
  margin-left: 4px;
}

.notification {
  position: fixed;
  top: 24px;
  right: 24px;
  padding: 0;
  border-radius: 8px;
  color: white;
  z-index: 3000;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  transform: translateX(100%);
  opacity: 0;
  max-width: 400px;
}

.notification-show {
  transform: translateX(0);
  opacity: 1;
}

.notification-hide {
  transform: translateX(100%);
  opacity: 0;
}

.notification-content {
  display: flex;
  align-items: center;
  padding: 16px;
  gap: 12px;
}

.notification-success {
  background-color: var(--jp-success-color);
}

.notification-error {
  background-color: var(--jp-error-color);
}

.notification i {
  font-size: 20px;
}

.computing {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  color: var(--jp-ui-font-color0);
  font-family: var(--font-family);
}

.loading-spinner {
  width: 30px;
  height: 30px;
  border: 3px solid rgba(25, 118, 210, 0.2);
  border-top: 3px solid var(--jp-brand-color0);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 12px;
}

.loading-text {
  font-size: 13px;
  color: var(--jp-ui-font-color1);
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.error {
  color: var(--jp-error-color);
  font-family: var(--font-family);
  font-size: 12px;
  padding: 12px;
  background-color: rgba(244, 67, 54, 0.1);
  border-radius: 4px;
  border-left: 3px solid var(--jp-error-color);
  margin-top: 8px;
}

.success {
  color: var(--jp-success-color);
  padding: 12px;
  background-color: rgba(76, 175, 80, 0.1);
  border-radius: 4px;
  border-left: 3px solid var(--jp-success-color);
  margin-top: 8px;
}

.empty-paragraph {
  min-height: 40px;
  border: 1px dashed var(--jp-border-color1);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--jp-ui-font-color1);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.empty-paragraph:hover {
  border-color: var(--jp-brand-color1);
  background-color: rgba(25, 118, 210, 0.05);
}

.paragraph-type-indicator {
  position: absolute;
  left: -30px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s;
}

.paragraph:hover .paragraph-type-indicator {
  opacity: 1;
}

.text-paragraph .paragraph-type-indicator {
  background-color: var(--jp-ui-font-color1);
  color: white;
}

.sympy-paragraph .paragraph-type-indicator {
  background-color: var(--jp-brand-color0);
  color: white;
}

.latex-paragraph .paragraph-type-indicator {
  background-color: #952d8b;
  color: white;
}

@media print {
  #header,
  #toolbar,
  #math-keyboard,
  #math-background,
  .code-header,
  .latex-header,
  .code-actions,
  .latex-actions,
  .code-input,
  .latex-input,
  .notification,
  .minimal-mode-toggle,
  .code-output div {
    display: none !important;
  }

  #document-container {
    padding: 0;
    background-color: white;
  }

  .a4-page {
    box-shadow: none;
    margin: 0;
    padding: 0;
  }

  .paragraph {
    border: none;
    padding: 8px 0;
  }

  .code-output,
  .latex-render {
    border: none;
    background-color: white;
  }
}

@media (max-width: 768px) {
  .a4-page {
    padding: 20px;
  }

  #toolbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .toolbar-section {
    width: 100%;
    overflow-x: auto;
  }

  .toolbar-button {
    flex-shrink: 0;
  }
}

.paragraph.minimal-mode .code-header,
.paragraph.minimal-mode .latex-header,
.paragraph.minimal-mode .code-input,
.paragraph.minimal-mode .latex-input,
.paragraph.minimal-mode .text-input,
.paragraph.minimal-mode .paragraph-type-indicator {
  display: none !important;
}

.paragraph.minimal-mode {
  border: none;
  padding: 0;
  background: transparent;
}

.paragraph.minimal-mode:hover {
  background: transparent;
}

.paragraph.minimal-mode .code-output,
.paragraph.minimal-mode .latex-render,
.paragraph.minimal-mode .text-render {
  margin-top: 0;
  border: none;
  background: transparent;
  padding: 4px 0;
}

.minimal-mode-toggle {
  position: absolute;
  right: -30px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  background-color: var(--jp-layout-color0);
  border: 1px solid var(--jp-border-color1);
  border-radius: 4px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--jp-ui-font-color1);
  font-size: 10px;
  z-index: 5;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  opacity: 0;
  visibility: hidden;
}

.paragraph:hover .minimal-mode-toggle {
  opacity: 1;
  visibility: visible;
}

.minimal-mode-toggle:hover {
  background-color: var(--jp-brand-color0);
  color: white;
  border-color: var(--jp-brand-color0);
  transform: translateY(-50%) scale(1.1);
}

.paragraph.minimal-mode .minimal-mode-toggle {
  opacity: 0;
  visibility: visible;
}

.paragraph.minimal-mode:hover .minimal-mode-toggle {
  opacity: 0.5;
}

.latex-paragraph .render-button {
  display: none;
}

.sympy-paragraph .code-output {
  margin-top: 12px;
  padding: 16px;
  background-color: transparent;
  border: 1px dashed var(--jp-border-color1);
  border-radius: 4px;
  min-height: 48px;
  font-size: 15px;
  transition: all 0.3s ease;
  overflow: auto;
}

.sympy-paragraph .code-output:empty {
  display: none;
}

.sympy-paragraph .code-output.success-flash {
  animation: successFlash 0.5s ease;
}

@keyframes successFlash {
  0% {
    background-color: transparent;
  }
  50% {
    background-color: rgba(76, 175, 80, 0.2);
  }
  100% {
    background-color: transparent;
  }
}

/* Auto-complete styles */
.autocomplete {
  position: relative;
}

.autocomplete-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  max-height: 280px;
  overflow-y: auto;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.98) 0%,
    rgba(248, 250, 252, 0.98) 100%
  );
  border: 1px solid rgba(25, 118, 210, 0.2);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(25, 118, 210, 0.15), 0 2px 8px rgba(0, 0, 0, 0.08);
  z-index: 1000;
  margin-top: 8px;
  display: none;
  backdrop-filter: blur(10px);
  animation: slideDown 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* SymPy autocomplete styles (Blue theme) */
.autocomplete-suggestions.visible {
  display: block;
}

.autocomplete-suggestions::-webkit-scrollbar {
  width: 6px;
}

.autocomplete-suggestions::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.05);
  border-radius: 3px;
}

.autocomplete-suggestions::-webkit-scrollbar-thumb {
  background: rgba(25, 118, 210, 0.3);
  border-radius: 3px;
}

.autocomplete-suggestions::-webkit-scrollbar-thumb:hover {
  background: rgba(25, 118, 210, 0.5);
}

.autocomplete-suggestion {
  padding: 10px 14px;
  cursor: pointer;
  font-family: var(--word-font-family);
  font-size: 13px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.autocomplete-suggestion:last-child {
  border-bottom: none;
}

.autocomplete-suggestion:hover,
.autocomplete-suggestion.active {
  background: linear-gradient(
    135deg,
    rgba(25, 118, 210, 0.08) 0%,
    rgba(25, 118, 210, 0.12) 100%
  );
  border-left: 3px solid var(--jp-brand-color0);
  padding-left: 11px;
}

.autocomplete-suggestion-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.autocomplete-suggestion-name {
  font-weight: 600;
  color: var(--jp-brand-color0);
  font-size: 14px;
  letter-spacing: 0.3px;
}

.autocomplete-suggestion:hover .autocomplete-suggestion-name,
.autocomplete-suggestion.active .autocomplete-suggestion-name {
  color: var(--jp-brand-color0);
}

.autocomplete-suggestion .suggestion-match {
  color: var(--jp-brand-color0);
  background: linear-gradient(
    135deg,
    rgba(25, 118, 210, 0.15) 0%,
    rgba(25, 118, 210, 0.1) 100%
  );
  padding: 1px 4px;
  border-radius: 3px;
  font-weight: 700;
}

.autocomplete-suggestion:hover .suggestion-match,
.autocomplete-suggestion.active .suggestion-match {
  background: linear-gradient(
    135deg,
    rgba(25, 118, 210, 0.25) 0%,
    rgba(25, 118, 210, 0.2) 100%
  );
  color: var(--jp-brand-color0);
}

.autocomplete-suggestion-signature {
  font-family: var(--word-font-family);
  font-size: 11px;
  color: var(--jp-ui-font-color1);
  background: rgba(0, 0, 0, 0.04);
  padding: 4px 8px;
  border-radius: 4px;
  display: inline-block;
  margin-top: 2px;
}

.autocomplete-suggestion:hover .autocomplete-suggestion-signature,
.autocomplete-suggestion.active .autocomplete-suggestion-signature {
  background: rgba(25, 118, 210, 0.1);
  color: var(--jp-brand-color0);
}

.autocomplete-suggestion-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  flex-shrink: 0;
}

.autocomplete-suggestion .suggestion-type {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 3px 8px;
  border-radius: 6px;
  background: linear-gradient(
    135deg,
    rgba(156, 39, 176, 0.1) 0%,
    rgba(156, 39, 176, 0.05) 100%
  );
  color: #9c27b0;
  border: 1px solid rgba(156, 39, 176, 0.2);
}

.autocomplete-suggestion .suggestion-type.function {
  background: linear-gradient(
    135deg,
    rgba(25, 118, 210, 0.1) 0%,
    rgba(25, 118, 210, 0.05) 100%
  );
  color: #1976d2;
  border-color: rgba(25, 118, 210, 0.2);
}

.autocomplete-suggestion .suggestion-type.class {
  background: linear-gradient(
    135deg,
    rgba(255, 152, 0, 0.1) 0%,
    rgba(255, 152, 0, 0.05) 100%
  );
  color: #ff9800;
  border-color: rgba(255, 152, 0, 0.2);
}

.autocomplete-suggestion .suggestion-type.constant {
  background: linear-gradient(
    135deg,
    rgba(76, 175, 80, 0.1) 0%,
    rgba(76, 175, 80, 0.05) 100%
  );
  color: #4caf50;
  border-color: rgba(76, 175, 80, 0.2);
}

.autocomplete-suggestion-doc-cn {
  font-size: 11px;
  color: var(--jp-ui-font-color1);
  font-style: normal;
  line-height: 1.4;
  max-width: 180px;
  text-align: right;
}

.autocomplete-suggestion:hover .autocomplete-suggestion-doc-cn,
.autocomplete-suggestion.active .autocomplete-suggestion-doc-cn {
  color: var(--jp-ui-font-color0);
}

/* Latex autocomplete styles (Purple theme) */
.autocomplete-suggestions.latex-suggestions {
  border: 1px solid rgba(149, 45, 139, 0.2);
  box-shadow: 0 8px 32px rgba(149, 45, 139, 0.15), 0 2px 8px rgba(0, 0, 0, 0.08);
}

.autocomplete-suggestions.latex-suggestions::-webkit-scrollbar-thumb {
  background: rgba(149, 45, 139, 0.3);
}

.autocomplete-suggestions.latex-suggestions::-webkit-scrollbar-thumb:hover {
  background: rgba(149, 45, 139, 0.5);
}

.autocomplete-suggestion.latex-suggestion-item:hover,
.autocomplete-suggestion.latex-suggestion-item.active {
  background: linear-gradient(
    135deg,
    rgba(149, 45, 139, 0.08) 0%,
    rgba(149, 45, 139, 0.12) 100%
  );
  border-left: 3px solid #952d8b;
  padding-left: 11px;
}

.autocomplete-suggestion.latex-suggestion-item .autocomplete-suggestion-name {
  color: #952d8b;
}

.autocomplete-suggestion.latex-suggestion-item:hover
  .autocomplete-suggestion-name,
.autocomplete-suggestion.latex-suggestion-item.active
  .autocomplete-suggestion-name {
  color: #952d8b;
}

.autocomplete-suggestion.latex-suggestion-item .suggestion-match {
  color: #952d8b;
  background: linear-gradient(
    135deg,
    rgba(149, 45, 139, 0.15) 0%,
    rgba(149, 45, 139, 0.1) 100%
  );
}

.autocomplete-suggestion.latex-suggestion-item:hover .suggestion-match,
.autocomplete-suggestion.latex-suggestion-item.active .suggestion-match {
  background: linear-gradient(
    135deg,
    rgba(149, 45, 139, 0.25) 0%,
    rgba(149, 45, 139, 0.2) 100%
  );
  color: #952d8b;
}

.autocomplete-suggestion.latex-suggestion-item:hover
  .autocomplete-suggestion-signature,
.autocomplete-suggestion.latex-suggestion-item.active
  .autocomplete-suggestion-signature {
  background: rgba(149, 45, 139, 0.1);
  color: #952d8b;
}

.autocomplete-suggestion.latex-suggestion-item .suggestion-type.function {
  background: linear-gradient(
    135deg,
    rgba(149, 45, 139, 0.1) 0%,
    rgba(149, 45, 139, 0.05) 100%
  );
  color: #952d8b;
  border-color: rgba(149, 45, 139, 0.2);
}

.autocomplete-suggestion.latex-suggestion-item .suggestion-type.symbol {
  background: linear-gradient(
    135deg,
    rgba(156, 39, 176, 0.1) 0%,
    rgba(156, 39, 176, 0.05) 100%
  );
  color: #9c27b0;
  border-color: rgba(156, 39, 176, 0.2);
}

.autocomplete-suggestion.latex-suggestion-item .suggestion-type.command {
  background: linear-gradient(
    135deg,
    rgba(142, 36, 170, 0.1) 0%,
    rgba(142, 36, 170, 0.05) 100%
  );
  color: #8e24aa;
  border-color: rgba(142, 36, 170, 0.2);
}

.autocomplete-suggestion.latex-suggestion-item .suggestion-type.environment {
  background: linear-gradient(
    135deg,
    rgba(123, 31, 162, 0.1) 0%,
    rgba(123, 31, 162, 0.05) 100%
  );
  color: #7b1fa2;
  border-color: rgba(123, 31, 162, 0.2);
}

.autocomplete-suggestion.latex-suggestion-item .suggestion-type.template {
  background: linear-gradient(
    135deg,
    rgba(106, 27, 154, 0.1) 0%,
    rgba(106, 27, 154, 0.05) 100%
  );
  color: #6a1b9a;
  border-color: rgba(106, 27, 154, 0.2);
}

/* Floating Formula Editor Panel */
.formula-editor-panel {
  position: fixed;
  top: 100px;
  right: 20px;
  width: 400px;
  min-width: 300px;
  min-height: 300px;
  max-width: 600px;
  max-height: 700px;
  background-color: white;
  border: 1px solid var(--jp-border-color1);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  z-index: 1500;
  display: flex;
  flex-direction: column;
  resize: both;
  overflow: hidden;
}

.formula-editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background-color: var(--jp-layout-color1);
  border-bottom: 1px solid var(--jp-border-color1);
  border-radius: 8px 8px 0 0;
  cursor: move;
  user-select: none;
  flex-shrink: 0;
}

.formula-editor-header span {
  font-size: 13px;
  font-weight: 500;
  color: var(--jp-ui-font-color0);
}

.formula-editor-close-btn {
  background: none;
  border: none;
  color: var(--jp-ui-font-color1);
  font-size: 12px;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
  transition: all 0.2s;
}

.formula-editor-close-btn:hover {
  background-color: var(--jp-layout-color2);
  color: var(--jp-ui-font-color0);
}

.formula-editor-body {
  padding: 12px;
  overflow-y: auto;
  overflow-x: hidden;
  flex: 1;
  min-height: 0;
}

.formula-editor-body .formula-categories {
  display: flex;
  margin-bottom: 10px;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: center;
  flex-shrink: 0;
}

.formula-editor-body .formula-category-btn {
  padding: 4px 10px;
  font-size: 11px;
  border: 1px solid var(--jp-border-color1);
  background: transparent;
  color: var(--jp-ui-font-color1);
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.2s;
  white-space: nowrap;
}

.formula-editor-body .formula-category-btn:hover {
  background-color: var(--jp-layout-color2);
  color: var(--jp-ui-font-color0);
}

.formula-editor-body .formula-category-btn.active {
  background-color: var(--jp-brand-color0);
  color: white;
  border-color: var(--jp-brand-color0);
}

.formula-editor-body .formula-symbol-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
  gap: 8px;
  padding: 4px;
}

.formula-editor-body .latex-symbol-btn {
  padding: 10px 6px;
  font-size: 14px;
  border: 1px solid var(--jp-border-color1);
  background-color: white;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  min-width: 70px;
  word-break: break-word;
  text-align: center;
  overflow: hidden;
}

.formula-editor-body .latex-symbol-btn:hover {
  background-color: var(--jp-brand-color0);
  color: white;
  border-color: var(--jp-brand-color0);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(102, 126, 234, 0.2);
}

.formula-editor-body .latex-symbol-btn .mjx-chtml {
  font-size: 16px !important;
  max-width: 100%;
  overflow: hidden;
}