/* ============================================
   SIDEBAR-STYLE MATCHING: Modern macOS Aesthetic
   Added by Akson - Overrides PDF.js default styles
   ============================================ */

/* Typography - Match sidebar font - Override PDF.js font:message-box */
html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
body, html {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif !important;
  -webkit-font-smoothing: antialiased !important;
  -moz-osx-font-smoothing: grayscale !important;
}

.toolbar, #toolbarContainer, #toolbarSidebar {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif !important;
  -webkit-font-smoothing: antialiased !important;
}

/* Override PDF.js font:message-box shorthand */
:is(.toolbar, .editorParamsToolbar, .findbar, #sidebarContainer) :is(input, button, select),
.secondaryToolbar :is(input, button, a, select),
.toolbarButton, .secondaryToolbarButton, .dialogButton, .dropdownToolbarButton {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif !important;
  -webkit-font-smoothing: antialiased !important;
  -moz-osx-font-smoothing: grayscale !important;
}

.treeItem, .treeItemContent, .toolbarField, input, select, textarea {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif !important;
  -webkit-font-smoothing: antialiased !important;
}

/* Toolbar buttons - Override border-radius:2px to 8px */
.toolbarButton, .secondaryToolbarButton, .dialogButton, .dropdownToolbarButton {
  border-radius: 8px !important;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

/* Hover states with transforms */
.toolbarButton:is(:hover, :focus-visible),
.splitToolbarButton > .toolbarButton:is(:hover, :focus-visible),
.dropdownToolbarButton:hover,
.secondaryToolbarButton:is(:hover, :focus-visible),
.dialogButton:is(:hover, :focus-visible) {
  transform: translateY(-1px) !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15) !important;
  border-radius: 8px !important;
}

.toolbarButton:active, .secondaryToolbarButton:active, .dialogButton:active {
  transform: translateY(0) !important;
  transition: all 0.1s ease !important;
}

/* Toolbar shadows */
.toolbar, #toolbarContainer, #toolbarSidebar {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1) !important;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

/* Dropdowns and doorhangers - Rounded corners */
.doorhanger, .doorHanger {
  border-radius: 10px !important;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2) !important;
  backdrop-filter: blur(20px) !important;
  -webkit-backdrop-filter: blur(20px) !important;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
  border: 1px solid rgba(255, 255, 255, 0.1) !important;
}

.doorhanger > .doorhangerItem, .doorHanger > .doorhangerItem {
  border-radius: 6px !important;
  margin: 2px 4px !important;
  transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.doorhanger > .doorhangerItem:hover, .doorHanger > .doorhangerItem:hover {
  transform: translateX(2px) !important;
}

/* Dialogs */
.dialog, .dialogContainer {
  border-radius: 12px !important;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.3) !important;
  backdrop-filter: blur(20px) !important;
  -webkit-backdrop-filter: blur(20px) !important;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) !important;
}

.dialogButton {
  border-radius: 8px !important;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
  font-weight: 500 !important;
}

.dialogButton:hover {
  transform: translateY(-1px) !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15) !important;
}

/* Input fields */
.toolbarField, input[type="text"], input[type="number"], select, textarea {
  border-radius: 8px !important;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.toolbarField:focus, input:focus, select:focus, textarea:focus {
  outline: none !important;
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2) !important;
  border-color: rgba(139, 92, 246, 0.5) !important;
}

/* Findbar */
.findbar {
  border-radius: 0 0 10px 10px !important;
}

/* Tree items */
.treeItem, .treeItemContent {
  border-radius: 6px !important;
  transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1) !important;
  margin: 1px 4px !important;
}

.treeItem:hover {
  transform: translateX(2px) !important;
}

/* Thumbnails */
.thumbnail {
  border-radius: 8px !important;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1) !important;
}

.thumbnail:hover {
  transform: translateY(-2px) scale(1.02) !important;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2) !important;
}

.thumbnail.selected {
  box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.5), 0 4px 16px rgba(0, 0, 0, 0.2) !important;
}

/* Progress bar */
#loadingBar, .progressBar {
  border-radius: 4px !important;
}

/* Scrollbars - Match sidebar */
::-webkit-scrollbar {
  width: 10px !important;
  height: 10px !important;
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-bg-color) !important;
  border-radius: 5px !important;
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-color) !important;
  border-radius: 5px !important;
  border: 2px solid var(--scrollbar-bg-color) !important;
  transition: background 0.2s ease !important;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--button-hover-color) !important;
}

:root.is-light ::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.2) !important;
}

:root.is-light ::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.3) !important;
}

:root.is-dark ::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2) !important;
}

:root.is-dark ::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3) !important;
}

/* Separators */
.verticalToolbarSeparator, .horizontalToolbarSeparator {
  opacity: 0.3 !important;
  transition: opacity 0.2s ease !important;
}

/* Secondary toolbar */
#secondaryToolbar {
  border-radius: 0 0 10px 10px !important;
}

/* Annotation editor toolbar */
.editorParamsToolbar {
  border-radius: 8px !important;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15) !important;
}

/* Focus states */
*:focus-visible {
  outline: 2px solid rgba(139, 92, 246, 0.5) !important;
  outline-offset: 2px !important;
  border-radius: 4px !important;
}

/* Toggled states */
.toolbarButton.toggled, .secondaryToolbarButton.toggled {
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1) !important;
}

/* ============================================
   MARKDOWN STYLING FOR AI OUTPUTS
   ============================================ */

/* Markdown Tables */
.ai-output table {
  width: 100% !important;
  border-collapse: collapse !important;
  margin: 16px 0 !important;
  font-size: 14px !important;
  border-radius: 8px !important;
  overflow: hidden !important;
}

.ai-output table th,
.ai-output table td {
  padding: 10px 14px !important;
  text-align: left !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1) !important;
}

.ai-output table th {
  background: rgba(139, 92, 246, 0.2) !important;
  font-weight: 600 !important;
  color: #fff !important;
}

.ai-output table tr:hover {
  background: rgba(255, 255, 255, 0.05) !important;
}

.ai-output table tr:last-child td {
  border-bottom: none !important;
}

/* Bold text styling */
.ai-output strong,
.ai-output b {
  font-weight: 600 !important;
  color: #fff !important;
}

/* Italic text styling */
.ai-output em,
.ai-output i {
  font-style: italic !important;
  color: #e8e8ea !important;
}

/* Inline code styling */
.ai-output code {
  background: rgba(139, 92, 246, 0.15) !important;
  padding: 2px 6px !important;
  border-radius: 4px !important;
  font-family: 'SF Mono', 'Monaco', 'Consolas', monospace !important;
  font-size: 13px !important;
  color: #a78bfa !important;
}

/* Code blocks */
.ai-output pre {
  background: rgba(0, 0, 0, 0.3) !important;
  padding: 16px !important;
  border-radius: 8px !important;
  overflow-x: auto !important;
  margin: 16px 0 !important;
}

.ai-output pre code {
  background: transparent !important;
  padding: 0 !important;
}

/* Headings */
.ai-output h1,
.ai-output h2,
.ai-output h3,
.ai-output h4 {
  font-weight: 600 !important;
  margin: 20px 0 12px 0 !important;
  color: #fff !important;
}

.ai-output h1 { font-size: 22px !important; }
.ai-output h2 { font-size: 18px !important; border-bottom: 1px solid rgba(139, 92, 246, 0.3) !important; padding-bottom: 8px !important; }
.ai-output h3 { font-size: 16px !important; }
.ai-output h4 { font-size: 14px !important; }

/* Block quotes */
.ai-output blockquote {
  border-left: 3px solid rgba(139, 92, 246, 0.5) !important;
  padding-left: 16px !important;
  margin: 16px 0 !important;
  color: #a0a0a2 !important;
  font-style: italic !important;
}

/* Horizontal rules */
.ai-output hr {
  border: none !important;
  border-top: 1px solid rgba(255, 255, 255, 0.1) !important;
  margin: 24px 0 !important;
}

/* Lists */
.ai-output ul,
.ai-output ol {
  padding-left: 24px !important;
  margin: 12px 0 !important;
}

.ai-output li {
  margin: 8px 0 !important;
  line-height: 1.6 !important;
}

.ai-output li::marker {
  color: rgba(139, 92, 246, 0.7) !important;
}

/* Critical warnings */
.ai-output .critical-warning {
  color: #ff6b6b !important;
  font-weight: 500 !important;
}

.ai-output .high-yield {
  color: #4ecdc4 !important;
  font-weight: 500 !important;
}

.ai-output .clinical-significance {
  color: #ffe66d !important;
  font-weight: 500 !important;
}

/* ============================================
   FLASHCARD STYLING
   ============================================ */

.flashcard-container {
  display: flex !important;
  flex-direction: column !important;
  gap: 16px !important;
  padding: 16px !important;
}

.flashcard {
  background: rgba(255, 255, 255, 0.05) !important;
  border: 1px solid rgba(255, 255, 255, 0.1) !important;
  border-radius: 12px !important;
  padding: 20px !important;
  transition: all 0.2s ease !important;
}

.flashcard:hover {
  background: rgba(255, 255, 255, 0.08) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2) !important;
}

.flashcard-question {
  font-weight: 600 !important;
  color: #fff !important;
  margin-bottom: 12px !important;
  font-size: 15px !important;
}

.flashcard-answer {
  color: #e8e8ea !important;
  font-size: 14px !important;
  line-height: 1.6 !important;
}

.flashcard-answer ul {
  margin: 8px 0 !important;
  padding-left: 20px !important;
}

.flashcard-answer li {
  margin: 4px 0 !important;
}

/* ============================================
   LOADING ANIMATIONS
   ============================================ */

.ai-loading {
  display: flex !important;
  align-items: center !important;
  gap: 12px !important;
  padding: 20px !important;
  color: #a0a0a2 !important;
}

.ai-loading-dots {
  display: flex !important;
  gap: 4px !important;
}

.ai-loading-dot {
  width: 8px !important;
  height: 8px !important;
  background: rgba(139, 92, 246, 0.5) !important;
  border-radius: 50% !important;
  animation: loading-bounce 1.4s infinite ease-in-out both !important;
}

.ai-loading-dot:nth-child(1) { animation-delay: -0.32s !important; }
.ai-loading-dot:nth-child(2) { animation-delay: -0.16s !important; }
.ai-loading-dot:nth-child(3) { animation-delay: 0s !important; }

@keyframes loading-bounce {
  0%, 80%, 100% { transform: scale(0) !important; }
  40% { transform: scale(1) !important; }
}

.ai-loading-spinner {
  width: 24px !important;
  height: 24px !important;
  border: 2px solid rgba(139, 92, 246, 0.2) !important;
  border-top-color: rgba(139, 92, 246, 0.8) !important;
  border-radius: 50% !important;
  animation: spin 1s linear infinite !important;
}

@keyframes spin {
  to { transform: rotate(360deg) !important; }
}

/* ============================================
   ASK AI CHAT INTERFACE
   ============================================ */

.chat-container {
  display: flex !important;
  flex-direction: column !important;
  height: 100% !important;
  background: rgba(42, 42, 46, 0.95) !important;
}

.chat-messages {
  flex: 1 !important;
  overflow-y: auto !important;
  padding: 16px !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 16px !important;
}

.chat-message {
  padding: 12px 16px !important;
  border-radius: 12px !important;
  max-width: 85% !important;
  line-height: 1.5 !important;
  font-size: 14px !important;
}

.chat-message.user {
  align-self: flex-end !important;
  background: rgba(139, 92, 246, 0.3) !important;
  color: #fff !important;
}

.chat-message.assistant {
  align-self: flex-start !important;
  background: rgba(255, 255, 255, 0.08) !important;
  color: #e8e8ea !important;
}

.chat-input-container {
  padding: 16px !important;
  border-top: 1px solid rgba(255, 255, 255, 0.1) !important;
  display: flex !important;
  gap: 12px !important;
}

.chat-input {
  flex: 1 !important;
  background: rgba(255, 255, 255, 0.05) !important;
  border: 1px solid rgba(255, 255, 255, 0.1) !important;
  border-radius: 8px !important;
  padding: 12px 16px !important;
  color: #fff !important;
  font-size: 14px !important;
  resize: none !important;
  min-height: 44px !important;
  max-height: 120px !important;
}

.chat-input:focus {
  outline: none !important;
  border-color: rgba(139, 92, 246, 0.5) !important;
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2) !important;
}

.chat-send-btn {
  background: rgba(139, 92, 246, 0.8) !important;
  border: none !important;
  border-radius: 8px !important;
  padding: 12px 20px !important;
  color: #fff !important;
  font-weight: 500 !important;
  cursor: pointer !important;
  transition: all 0.2s ease !important;
}

.chat-send-btn:hover {
  background: rgba(139, 92, 246, 1) !important;
  transform: translateY(-1px) !important;
}

.chat-send-btn:disabled {
  opacity: 0.5 !important;
  cursor: not-allowed !important;
}

/* ============================================
   EMOJI STYLING
   ============================================ */

.ai-output .emoji {
  font-style: normal !important;
  margin-right: 4px !important;
}

/* ============================================
   AI OUTPUT CONTAINER
   ============================================ */

.ai-output {
  padding: 20px !important;
  line-height: 1.7 !important;
  font-size: 14px !important;
  color: #e8e8ea !important;
  max-height: 400px !important;
  overflow-y: auto !important;
}

.ai-output.empty {
  color: #6e6e70 !important;
  font-style: italic !important;
  text-align: center !important;
}

/* ============================================
   TOAST NOTIFICATION SYSTEM
   ============================================ */

#toast-container,
.toast-container {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 2147483647;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
  max-width: 320px;
}

.toast {
  background: rgba(10, 10, 12, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 8px;
  padding: 10px 14px;
  min-width: 180px;
  max-width: 320px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  gap: 10px;
  pointer-events: auto;
  animation: toastSlideIn 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.toast.success {
  background: linear-gradient(135deg, rgba(46, 204, 113, 0.92), rgba(38, 166, 91, 0.92));
  border-left: 4px solid #51cf66;
}

.toast.error {
  background: linear-gradient(135deg, rgba(231, 76, 60, 0.95), rgba(192, 57, 43, 0.95));
  border-left: 4px solid #ff6b6b;
}

.toast.warning {
  background: linear-gradient(135deg, rgba(241, 196, 15, 0.92), rgba(234, 180, 32, 0.92));
  border-left: 4px solid #ffd43b;
}

.toast.info {
  background: linear-gradient(135deg, rgba(52, 152, 219, 0.9), rgba(41, 128, 185, 0.9));
  border-left: 4px solid #5a9fd4;
}

.toast-icon {
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toast-message {
  flex: 1;
  color: #fff;
  font-size: 14px;
  font-weight: 500;
}

/* ============================================
   MARKDOWN FORMATTING STYLES
   ============================================ */

/* Markdown headings */
.markdown-h1 {
  font-size: 24px;
  font-weight: 700;
  margin: 16px 0 8px 0;
  color: var(--text-primary, #ffffff);
  line-height: 1.3;
}

.markdown-h2 {
  font-size: 20px;
  font-weight: 600;
  margin: 14px 0 8px 0;
  color: var(--text-primary, #ffffff);
  line-height: 1.3;
}

.markdown-h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 12px 0 6px 0;
  color: var(--text-secondary, #e8e8ea);
  line-height: 1.3;
}

/* Markdown paragraphs */
.markdown-content p {
  margin: 8px 0;
  line-height: 1.6;
  color: var(--text-secondary, #e8e8ea);
}

/* Markdown lists */
.markdown-ul, .markdown-ol {
  margin: 8px 0;
  padding-left: 24px;
}

.markdown-li-bullet, .markdown-li-numbered {
  margin: 4px 0;
  color: var(--text-secondary, #e8e8ea);
  line-height: 1.5;
}

/* Markdown tables */
.markdown-table-wrapper {
  overflow-x: auto;
  margin: 12px 0;
  border-radius: 8px;
  border: 1px solid var(--border-default, rgba(255, 255, 255, 0.12));
}

.markdown-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.markdown-table thead {
  background: var(--surface-elevated, rgba(255, 255, 255, 0.03));
}

.markdown-table th {
  padding: 10px 12px;
  text-align: left;
  font-weight: 600;
  color: var(--text-primary, #ffffff);
  border-bottom: 1px solid var(--border-default, rgba(255, 255, 255, 0.12));
}

.markdown-table td {
  padding: 8px 12px;
  color: var(--text-secondary, #e8e8ea);
  border-bottom: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.06));
}

.markdown-table tbody tr:hover {
  background: var(--surface-hover, rgba(255, 255, 255, 0.05));
}

/* Markdown quotes */
.markdown-quote {
  margin: 8px 0;
  padding: 12px 16px;
  border-left: 4px solid var(--accent-purple, #8B5CF6);
  background: var(--surface-elevated, rgba(255, 255, 255, 0.03));
  border-radius: 4px;
  color: var(--text-tertiary, #a0a0a2);
  font-style: italic;
  line-height: 1.5;
}

/* Markdown inline code */
code {
  background: var(--surface-elevated, rgba(255, 255, 255, 0.03));
  color: var(--accent-purple, #8B5CF6);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 12px;
}

/* Markdown horizontal rule */
.markdown-hr {
  margin: 16px 0;
  border: none;
  border-top: 1px solid var(--border-default, rgba(255, 255, 255, 0.12));
}

/* Markdown fenced code block */
.markdown-pre {
  margin: 12px 0;
  padding: 12px 16px;
  overflow-x: auto;
  border-radius: 8px;
  border: 1px solid var(--border-default, rgba(255, 255, 255, 0.12));
  background: var(--surface-elevated, rgba(255, 255, 255, 0.03));
}
.markdown-pre code {
  padding: 0;
  background: none;
  font-size: 13px;
  line-height: 1.5;
  word-break: normal;
  white-space: pre;
}

/* ============================================
   AI FEATURE STYLES
   ============================================ */

/* AI Feature Buttons */
.aiFeatureButtons {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.aiFeatureBtn {
  flex: 1;
  min-width: 100px;
  padding: 8px 12px;
  background: var(--surface-elevated, rgba(255, 255, 255, 0.03));
  border: 1px solid var(--border-default, rgba(255, 255, 255, 0.12));
  border-radius: 8px;
  color: var(--text-primary, #ffffff);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.aiFeatureBtn:hover {
  background: var(--surface-hover, rgba(255, 255, 255, 0.05));
  border-color: var(--accent-purple, #8B5CF6);
  transform: translateY(-1px);
}

.aiFeatureBtn:active {
  transform: translateY(0);
}

.aiFeatureBtn .btn-icon {
  font-size: 16px;
}

.aiFeatureBtn .btn-label {
  font-size: 12px;
}

/* AI Feature Inputs */
.aiFeatureInputs {
  margin-bottom: 12px;
}

.aiInputGroup {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.aiInputGroup label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-tertiary, #a0a0a2);
}

.aiInputWrapper {
  display: flex;
  gap: 6px;
}

.aiInputWrapper input {
  flex: 1;
  padding: 8px 12px;
  background: var(--surface-elevated, rgba(255, 255, 255, 0.03));
  border: 1px solid var(--border-default, rgba(255, 255, 255, 0.12));
  border-radius: 6px;
  color: var(--text-primary, #ffffff);
  font-size: 13px;
  transition: all 0.2s ease;
}

.aiInputWrapper input:focus {
  outline: none;
  border-color: var(--accent-purple, #8B5CF6);
  background: var(--surface-hover, rgba(255, 255, 255, 0.05));
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.aiInputWrapper input::placeholder {
  color: var(--text-quaternary, #6e6e70);
}

.aiSendBtn {
  padding: 8px 12px;
  background: var(--accent-purple, #8B5CF6);
  border: none;
  border-radius: 6px;
  color: white;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
}

.aiSendBtn:hover {
  background: var(--accent-purple-light, #A78BFA);
  transform: translateY(-1px);
}

.aiSendBtn:active {
  transform: translateY(0);
}

/* AI Result Area */
.aiResultArea {
  background: var(--surface-elevated, rgba(255, 255, 255, 0.03));
  border: 1px solid var(--border-default, rgba(255, 255, 255, 0.12));
  border-radius: 8px;
  padding: 12px;
  margin-top: 12px;
  max-height: 400px;
  overflow-y: auto;
}

.ai-result-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary, #ffffff);
  margin: 0 0 8px 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.06));
}

.ai-result-content {
  font-size: 13px;
  color: var(--text-secondary, #e8e8ea);
  line-height: 1.6;
}

.ai-result-content p {
  margin: 6px 0;
}

.ai-result-content strong {
  color: var(--text-primary, #ffffff);
  font-weight: 600;
}

.ai-result-content em {
  color: var(--accent-purple-light, #A78BFA);
  font-style: italic;
}

/* Streaming summary: word fade-in (smooth, no snap) */
.stream-summary-loading {
  color: var(--text-tertiary, #a0a0a2);
  margin-bottom: 8px;
}

.stream-summary-words {
  line-height: 1.6;
  color: var(--text-secondary, #e8e8ea);
}

.stream-word.stream-fade-in,
.stream-segment.stream-fade-in {
  animation: streamWordFadeIn 0.4s ease-out forwards;
  opacity: 0;
}

.stream-segment {
  margin-bottom: 0.5em;
}

/* Streamed summary: same table/color scope as final summary (elegant-table from __aksonSummaryMarkdownToHtml) */
.stream-summary-words.markdown-content .elegant-table-wrapper,
.ai-result-content.markdown-content .stream-summary-words .elegant-table-wrapper {
  margin: 16px 0;
  border-radius: 8px;
  overflow: hidden;
  background: var(--surface-elevated, rgba(255, 255, 255, 0.02));
  border: 1px solid var(--border-default, rgba(255, 255, 255, 0.08));
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.stream-summary-words .elegant-table th,
.stream-summary-words .elegant-table td,
.stream-summary-words.markdown-content .elegant-table th,
.stream-summary-words.markdown-content .elegant-table td {
  color: var(--text-secondary, #e8e8ea);
}

.stream-summary-words .elegant-table th,
.stream-summary-words.markdown-content .elegant-table th {
  color: var(--text-primary, #ffffff);
  font-weight: 600;
}

.stream-summary-words .markdown-h1,
.stream-summary-words .markdown-h2,
.stream-summary-words .markdown-h3,
.stream-summary-words.markdown-content .markdown-h1,
.stream-summary-words.markdown-content .markdown-h2,
.stream-summary-words.markdown-content .markdown-h3 {
  color: var(--text-primary, #ffffff);
}

.stream-summary-words strong,
.stream-summary-words.markdown-content strong {
  color: var(--text-primary, #ffffff);
}

@keyframes streamWordFadeIn {
  from {
    opacity: 0;
    transform: translateY(2px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Loading State */
.ai-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 20px;
  color: var(--text-tertiary, #a0a0a2);
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border-default, rgba(255, 255, 255, 0.12));
  border-top-color: var(--accent-purple, #8B5CF6);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Flashcards Display */
.flashcards-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.flashcard {
  background: var(--surface-elevated, rgba(255, 255, 255, 0.03));
  border: 1px solid var(--border-default, rgba(255, 255, 255, 0.12));
  border-radius: 8px;
  padding: 12px;
  transition: all 0.2s ease;
}

.flashcard:hover {
  background: var(--surface-hover, rgba(255, 255, 255, 0.05));
  border-color: var(--accent-purple, #8B5CF6);
}

.flashcard-question {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary, #ffffff);
  margin-bottom: 8px;
}

.flashcard-answer {
  font-size: 12px;
  color: var(--text-secondary, #e8e8ea);
  padding-top: 8px;
  border-top: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.06));
}

/* Error State */
.error {
  color: #ff6b6b;
  background: rgba(255, 107, 107, 0.1);
  padding: 12px;
  border-radius: 6px;
  border-left: 3px solid #ff6b6b;
}

@keyframes toastSlideIn {
  from { transform: translateX(10px) translateY(6px); opacity: 0; }
  to { transform: translateX(0) translateY(0); opacity: 1; }
}

/* ============================================
   PRO FEATURE GATING - ELEGANT UI
   ============================================ */

/* Account Center */
.akson-account-center {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-3xl);
}

.account-center-header {
  margin-bottom: var(--spacing-4xl);
  padding-bottom: var(--spacing-2xl);
  border-bottom: 1px solid var(--border-default);
}

.account-center-header h1 {
  font-size: var(--font-size-title);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.account-center-header p {
  color: var(--text-tertiary);
  font-size: var(--font-size-base);
}

/* Account Sections */
.account-section {
  margin-bottom: var(--spacing-3xl);
  padding: var(--spacing-2xl);
  background: var(--surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.account-section:hover {
  background: var(--surface-hover);
  border-color: var(--border-default);
}

.section-header {
  margin-bottom: var(--spacing-2xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-subtle);
}

.section-header h2 {
  font-size: var(--font-size-large);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

/* Plan Card */
.plan-card {
  padding: var(--spacing-2xl);
  border: 2px solid var(--border-default);
  border-radius: 12px;
  background: rgba(139, 92, 246, 0.05);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.plan-card.plan-pro {
  border-color: var(--accent-purple);
  background: var(--accent-purple-glow);
}

.plan-card-header {
  margin-bottom: var(--spacing-2xl);
}

.plan-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--accent-purple);
  color: white;
  border-radius: 8px;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-md);
}

.plan-icon {
  font-size: 16px;
}

.plan-status {
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  margin-top: var(--spacing-sm);
}

/* Plan Features */
.plan-features {
  margin: var(--spacing-2xl) 0;
}

.feature-row {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
  padding: var(--spacing-md) 0;
  opacity: 0.6;
  transition: opacity 0.2s ease;
}

.feature-row.unlocked {
  opacity: 1;
}

.feature-check {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: var(--font-weight-bold);
  background: var(--surface-active);
  color: var(--text-tertiary);
  flex-shrink: 0;
}

.feature-row.unlocked .feature-check {
  background: var(--accent-purple);
  color: white;
}

.feature-detail {
  flex: 1;
}

.feature-name {
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
}

.feature-desc {
  color: var(--text-tertiary);
  font-size: var(--font-size-small);
  margin-top: var(--spacing-xs);
}

/* Plan Actions */
.plan-actions {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-2xl);
  border-top: 1px solid var(--border-subtle);
}

.plan-price {
  color: var(--text-tertiary);
  font-size: var(--font-size-small);
  margin-top: var(--spacing-md);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  border-radius: 8px;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  font-family: var(--font-family);
}

.btn-upgrade {
  background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-purple-light) 100%);
  color: white;
  width: 100%;
}

.btn-upgrade:hover {
  box-shadow: 0 8px 20px rgba(139, 92, 246, 0.3);
  transform: translateY(-2px);
}

.btn-upgrade:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--surface-hover);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  width: 100%;
}

.btn-secondary:hover {
  background: var(--surface-active);
  border-color: var(--accent-purple);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.2);
  border-color: rgba(239, 68, 68, 0.5);
}

/* Account Fields */
.account-field {
  margin-bottom: var(--spacing-lg);
}

.account-field label {
  display: block;
  color: var(--text-secondary);
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.account-input {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--surface-active);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  transition: all 0.2s ease;
}

.account-input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.account-input:focus {
  outline: none;
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 3px var(--accent-purple-glow);
  background: var(--surface-hover);
}

/* Storage Info */
.storage-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

.storage-item {
  padding: var(--spacing-lg);
  background: var(--surface-active);
  border-radius: 8px;
  text-align: center;
}

.storage-label {
  color: var(--text-tertiary);
  font-size: var(--font-size-small);
  margin-bottom: var(--spacing-sm);
}

.storage-value {
  color: var(--text-primary);
  font-size: 24px;
  font-weight: var(--font-weight-bold);
}

/* Danger Zone */
.danger-zone {
  background: rgba(239, 68, 68, 0.05);
  border-color: rgba(239, 68, 68, 0.2);
}

.danger-zone .section-header {
  border-bottom-color: rgba(239, 68, 68, 0.2);
}

/* ============================================
   PRO FEATURE GATING - Locked Elements
   ============================================ */

/* Locked/Gated Elements */
.pro-feature-locked {
  opacity: 0.5;
  cursor: not-allowed;
  position: relative;
  pointer-events: none;
}

.pro-feature-locked::after {
  content: ' 🔒';
  font-size: 12px;
}

.pro-feature-locked {
  pointer-events: auto;
  cursor: pointer;
}

/* Upgrade Modal */
.pro-upgrade-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  pointer-events: none;
}

.pro-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  pointer-events: auto;
}

.pro-modal-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.95);
  width: 90%;
  max-width: 500px;
  background: var(--bg-primary);
  border: 1px solid var(--border-default);
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  pointer-events: auto;
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.pro-upgrade-modal.pro-modal-open .pro-modal-content {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
}

.pro-modal-header {
  padding: var(--spacing-2xl);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  text-align: center;
}

.pro-modal-icon {
  font-size: 40px;
  margin-bottom: var(--spacing-md);
  display: block;
  animation: modalIconBounce 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.pro-modal-header h2 {
  color: var(--text-primary);
  font-size: var(--font-size-large);
  font-weight: var(--font-weight-semibold);
}

.pro-modal-close {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 32px;
  height: 32px;
  border: none;
  background: var(--surface-hover);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 20px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font-family);
}

.pro-modal-close:hover {
  background: var(--surface-active);
  color: var(--text-primary);
}

.pro-modal-body {
  padding: var(--spacing-2xl);
}

.pro-modal-body p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
  font-size: var(--font-size-base);
}

.pro-benefits {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.pro-benefit {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--surface-active);
  border-radius: 10px;
  transition: all 0.2s ease;
}

.pro-benefit:hover {
  background: var(--surface-hover);
}

.pro-benefit-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.pro-benefit-title {
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
}

.pro-benefit-desc {
  color: var(--text-tertiary);
  font-size: var(--font-size-small);
  margin-top: var(--spacing-xs);
}

.pro-modal-footer {
  padding: var(--spacing-2xl);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  gap: var(--spacing-lg);
}

.pro-modal-cancel,
.pro-modal-upgrade {
  flex: 1;
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  border-radius: 8px;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  font-family: var(--font-family);
}

.pro-modal-cancel {
  background: var(--surface-active);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.pro-modal-cancel:hover {
  background: var(--surface-hover);
  color: var(--text-primary);
}

.pro-modal-upgrade {
  background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-purple-light) 100%);
  color: white;
}

.pro-modal-upgrade:hover {
  box-shadow: 0 8px 20px rgba(139, 92, 246, 0.3);
  transform: translateY(-1px);
}

.pro-modal-upgrade:active {
  transform: translateY(0);
}

/* Toast Notifications */
.pro-toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  padding: var(--spacing-lg) var(--spacing-xl);
  background: var(--surface-elevated);
  border: 1px solid var(--border-default);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: var(--font-size-base);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  opacity: 0;
  transform: translateX(400px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 10000;
}

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

.pro-toast-error {
  border-color: rgba(239, 68, 68, 0.3);
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

@keyframes modalIconBounce {
  0% {
    transform: scale(0) rotate(-45deg);
    opacity: 0;
  }
  70% {
    transform: scale(1.1) rotate(5deg);
  }
  100% {
    transform: scale(1) rotate(0);
    opacity: 1;
  }
}

/* Limit-reached modal (AI / PDF / Pro PDF cap) - theme vars only */
.limit-modal-root { position: fixed; inset: 0; z-index: 10050; display: flex; align-items: center; justify-content: center; padding: var(--spacing-lg, 24px); pointer-events: none; }
.limit-modal-root.is-open { pointer-events: auto; }
.limit-modal-backdrop { position: absolute; inset: 0; background: rgba(0, 0, 0, 0.4); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); pointer-events: auto; cursor: pointer; }
.limit-modal-content { position: relative; width: 100%; max-width: 480px; max-height: 90vh; overflow-y: auto; background: var(--bg-primary); border: 1px solid var(--border-default); border-radius: var(--radius-lg, 16px); box-shadow: var(--shadow-lg, 0 20px 60px rgba(0,0,0,0.25)); pointer-events: auto; font-family: var(--font-family); }
.limit-modal-header { padding: var(--spacing-2xl, 32px) var(--spacing-2xl) var(--spacing-lg); text-align: center; position: relative; }
.limit-modal-badge { display: inline-flex; align-items: center; gap: var(--spacing-xs, 8px); padding: var(--spacing-xs) var(--spacing-md); border-radius: 9999px; margin-bottom: var(--spacing-md); }
.limit-modal-badge-warning { background: rgba(251, 191, 36, 0.12); border: 1px solid rgba(251, 191, 36, 0.25); }
.limit-modal-badge-icon { color: var(--text-primary); font-weight: 700; font-size: 12px; }
.limit-modal-badge-text { color: var(--text-primary); font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; }
.limit-modal-title { color: var(--text-primary); font-size: var(--font-size-xl, 1.5rem); font-weight: var(--font-weight-semibold); margin: 0 0 var(--spacing-xs); letter-spacing: -0.02em; }
.limit-modal-subtitle { color: var(--text-secondary); font-size: var(--font-size-base); margin: 0; }
.limit-modal-close { position: absolute; top: var(--spacing-lg); right: var(--spacing-lg); width: 32px; height: 32px; padding: 0; border: none; border-radius: 8px; background: var(--surface-hover); color: var(--text-secondary); font-size: 20px; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: background 0.2s, color 0.2s; }
.limit-modal-close:hover { background: var(--surface-active); color: var(--text-primary); }
.limit-modal-trial-banner { margin: 0 var(--spacing-xl, 24px) var(--spacing-xl); padding: var(--spacing-lg); border-radius: var(--radius-lg); background: var(--surface-elevated); border: 1px solid var(--border-subtle); display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--spacing-md); }
.limit-modal-trial-content { display: flex; align-items: center; gap: var(--spacing-md); }
.limit-modal-trial-icon { width: 40px; height: 40px; border-radius: 10px; background: rgba(139, 92, 246, 0.2); border: 1px solid rgba(139, 92, 246, 0.3); color: var(--accent-purple); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 16px; }
.limit-modal-trial-title { color: var(--text-primary); font-size: var(--font-size-base); font-weight: 600; margin: 0; }
.limit-modal-trial-desc { color: var(--text-tertiary); font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; font-weight: 600; margin: 2px 0 0; }
.limit-modal-trial-tag { font-size: 11px; font-weight: 700; padding: 4px 10px; border-radius: 9999px; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.1); color: var(--text-primary); }
.limit-modal-features { margin: 0 var(--spacing-xl) var(--spacing-xl); border: 1px solid var(--border-default); border-radius: var(--radius-lg); overflow: hidden; background: var(--surface-elevated); }
.limit-modal-feature-item { display: flex; align-items: center; gap: var(--spacing-lg); padding: var(--spacing-lg) var(--spacing-xl); border-bottom: 1px solid var(--border-subtle); }
.limit-modal-feature-item:last-child { border-bottom: none; }
.limit-modal-feature-item.limit-modal-feature-highlight { border-left: 3px solid var(--accent-purple); background: linear-gradient(90deg, rgba(139, 92, 246, 0.06) 0%, transparent 100%); }
.limit-modal-feature-icon { width: 48px; height: 48px; border-radius: 12px; border: 1px solid var(--border-subtle); display: flex; align-items: center; justify-content: center; font-size: 20px; flex-shrink: 0; }
.limit-modal-feature-icon-blue { background: rgba(96, 165, 250, 0.12); color: var(--accent-purple); }
.limit-modal-feature-icon-purple { background: rgba(168, 85, 247, 0.12); color: var(--accent-purple); }
.limit-modal-feature-icon-green { background: rgba(74, 222, 128, 0.12); color: var(--text-primary); }
.limit-modal-feature-text { flex: 1; min-width: 0; }
.limit-modal-feature-title { color: var(--text-primary); font-size: var(--font-size-base); font-weight: 600; margin: 0; display: flex; align-items: center; gap: var(--spacing-xs); }
.limit-modal-feature-tag { font-size: 10px; font-weight: 700; text-transform: uppercase; padding: 2px 6px; border-radius: 4px; background: var(--accent-purple); color: white; }
.limit-modal-feature-desc { color: var(--text-secondary); font-size: var(--font-size-small, 13px); margin: 2px 0 0; }
.limit-modal-feature-check { color: var(--accent-purple); font-weight: 700; font-size: 18px; }
.limit-modal-footer { padding: var(--spacing-2xl) var(--spacing-xl); border-top: 1px solid var(--border-subtle); text-align: center; }
.limit-modal-cta { display: block; width: 100%; padding: 14px var(--spacing-xl); border: none; border-radius: var(--radius-md, 10px); background: var(--accent-purple); color: white; font-family: var(--font-family); font-size: var(--font-size-base); font-weight: 600; cursor: pointer; transition: background 0.2s, transform 0.1s; box-shadow: 0 4px 14px rgba(139, 92, 246, 0.35); }
.limit-modal-cta:hover { background: var(--accent-purple-light, #a78bfa); transform: translateY(-1px); }
.limit-modal-cta:active { transform: translateY(0); }
.limit-modal-cta-note { color: var(--text-tertiary); font-size: 11px; margin: var(--spacing-md) 0 0; }
.limit-modal-secondary { display: block; width: 100%; margin-top: var(--spacing-md); padding: 0; border: none; background: none; color: var(--text-tertiary); font-size: var(--font-size-small); font-family: var(--font-family); cursor: pointer; text-decoration: underline; transition: color 0.2s; }
.limit-modal-secondary:hover { color: var(--text-secondary); }

/* Dedicated AI limit reached block (Stitch-style card; Summary, Flashcards, Explain, Ask, Mindmap) */
.akson-ai-limit {
  width: 100%;
  max-width: 380px;
  padding: 1rem;
  box-sizing: border-box;
}
.akson-ai-limit-panel {
  background: var(--surface-elevated, color-mix(in srgb, var(--bg-primary) 88%, white));
  border: 1px solid var(--border-default);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.12), 0 4px 6px -2px rgba(0, 0, 0, 0.06);
}
.akson-ai-limit-header {
  margin-bottom: 0;
}
.akson-ai-limit-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: color-mix(in srgb, var(--accent-purple) 12%, transparent);
  border: 1px solid var(--accent-purple);
  color: var(--accent-purple);
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.akson-ai-limit-icon {
  font-size: 1rem;
  line-height: 1;
  opacity: 0.9;
}
.akson-ai-limit-headline {
  color: var(--text-primary);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.4;
  margin: 16px 0 8px;
}
.akson-ai-limit-body {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.5;
  margin: 0 0 20px;
}
.akson-ai-limit-benefits {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}
.akson-ai-limit-benefits li {
  color: var(--text-tertiary);
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  margin-bottom: 8px;
}
.akson-ai-limit-benefits li::before {
  content: '✓';
  color: var(--accent-purple);
  margin-right: 10px;
  font-weight: 700;
}
.akson-ai-limit-cta {
  display: block;
  width: 100%;
  padding: 12px 24px;
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 600;
  color: #fff !important;
  background: var(--accent-purple) !important;
  border: none !important;
  border-radius: 10px;
  cursor: pointer;
  transition: opacity 0.2s ease, background 0.2s;
}
.akson-ai-limit-cta:hover {
  opacity: 0.95;
  background: color-mix(in srgb, var(--accent-purple) 90%, white) !important;
}
.akson-ai-limit-cta:active {
  opacity: 1;
}

/* Overlay host + overlay (limit UI as external layer on top of summary/explain/flashcards/ask) */
.akson-ai-limit-overlay-host {
  position: relative;
  width: 100%;
}
.akson-ai-limit-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  padding: var(--spacing-2xl, 32px);
  box-sizing: border-box;
}
.akson-ai-limit-overlay.akson-ai-limit-overlay-hidden {
  pointer-events: none;
  visibility: hidden;
}
.akson-ai-limit-backdrop {
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, var(--bg-primary) 60%, black);
  border-radius: inherit;
}
.akson-ai-limit-card-wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 380px;
}

/* Library PDF count strip (free users only) */
.libraryPdfCountStrip { padding: 12px var(--spacing-lg); margin-bottom: var(--spacing-lg); background: var(--surface-elevated, rgba(255,255,255,0.06)); border: 1px solid var(--border-subtle, rgba(255,255,255,0.08)); border-radius: var(--radius-md, 10px); font-size: 13px; color: var(--text-secondary); }
.libraryPdfLimitLink { margin-left: 8px; padding: 4px 10px; background: var(--accent-purple-glow); border: 1px solid var(--accent-purple); border-radius: var(--radius-md, 6px); color: var(--text-primary); font-size: 12px; font-weight: 600; cursor: pointer; }
.libraryPdfLimitLink:hover { background: var(--accent-purple-glow-light, var(--accent-purple-glow)); }

/* Soft-disable when at AI limit (tooltip + click opens limit modal) */
.at-ai-limit { opacity: 0.7; cursor: not-allowed; }

/* ============================================
   MOBILE / TOUCH COMPATIBILITY
   - Minimum 44px touch targets (Apple HIG)
   - touch-action: manipulation removes 300ms tap delay
   - Tap highlight for feedback
   ============================================ */
@media (hover: none) and (pointer: coarse) {
  /* Remove tap delay and improve tap response */
  button,
  .btn,
  a[role="button"],
  [role="button"],
  .toolbarButton,
  .secondaryToolbarButton,
  .dialogButton,
  .dropdownToolbarButton,
  input[type="submit"],
  input[type="button"],
  input[type="reset"],
  .treeItem,
  .treeItemContent {
    touch-action: manipulation;
    -webkit-tap-highlight-color: rgba(139, 92, 246, 0.2);
  }

  /* Minimum touch target size: 44x44px (Apple HIG) */
  .btn {
    min-height: 44px;
    min-width: 44px;
  }

  .toolbarButton,
  .secondaryToolbarButton,
  .dialogButton,
  .dropdownToolbarButton {
    min-height: 44px !important;
    min-width: 44px !important;
    padding: 10px 14px !important;
  }
}