/* Modern CSS Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Color Palette */
  --primary-color: #22c55e;
  --primary-hover: #16a34a;
  --secondary-color: #64748b;
  --success-color: #10b981;
  --danger-color: #ef4444;
  --warning-color: #f59e0b;
  
  /* Neutral Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  
  /* Dark Mode Colors */
  --dark-bg-primary: #0f172a;
  --dark-bg-secondary: #1e293b;
  --dark-bg-tertiary: #334155;
  --dark-text-primary: #f1f5f9;
  --dark-text-secondary: #cbd5e1;
  --dark-text-muted: #94a3b8;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

/* Dark Mode Support */
[data-theme="dark"] {
  --bg-primary: var(--dark-bg-primary);
  --bg-secondary: var(--dark-bg-secondary);
  --bg-tertiary: var(--dark-bg-tertiary);
  --text-primary: var(--dark-text-primary);
  --text-secondary: var(--dark-text-secondary);
  --text-muted: var(--dark-text-muted);
}

/* Base Typography */
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* App Container */
.app-container {
  display: flex;
  height: 100vh;
  overflow: hidden;
  gap: 0; /* Ensure no gap between sidebar and main content */
}

/* Sidebar Toggle Button */
.sidebar-toggle {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  z-index: 1002; /* Higher than theme toggle */
  background-color: var(--bg-primary);
  border: 1px solid var(--bg-tertiary);
  color: var(--text-primary);
  cursor: pointer;
  padding: 0;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-md);
  width: 50px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  visibility: visible;
  min-width: 40px;
  min-height: 40px;
}

.sidebar-toggle:hover {
  background-color: var(--bg-secondary);
  transform: translateY(-1px);
}

.sidebar-toggle:active {
  transform: translateY(0);
}

/* Adjust main content to account for sidebar toggle */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
}

/* Sidebar Styles */
.sidebar {
  width: clamp(260px, 28vw, 320px);
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--bg-tertiary);
  display: flex;
  flex-direction: column;
  transition: width var(--transition-normal);
  z-index: 100;
  flex-shrink: 0;
  position: relative; /* Add this for absolute positioning context */
}

.sidebar.collapsed {
  width: clamp(56px, 12vw, 72px); /* Enough width for the toggle button */
  border-right: 1px solid var(--bg-tertiary);
  overflow: hidden;
  padding: 0; /* Remove any padding that might create space */
}

.sidebar.collapsed .sidebar-header,
.sidebar.collapsed .sidebar-content,
.sidebar.collapsed .new-chat-btn {
  display: none;
}

.sidebar.collapsed .sidebar-toggle {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  left: auto;
}

/* Collapsed conversation list styling */
.sidebar.collapsed #conversationList {
  padding: var(--spacing-sm);
  margin: 0;
}

.sidebar.collapsed .conversation-item {
  padding: 8px;
  margin-bottom: 4px;
  justify-content: center;
  align-items: center;
  display: flex;
}

.sidebar.collapsed .conversation-item a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

/* Conversation count indicator for collapsed state */
.sidebar.collapsed .conversation-count {
  padding: 8px;
  margin-bottom: 8px;
  justify-content: center;
  border-bottom: 1px solid var(--bg-tertiary);
  display: flex !important; /* Ensure it's visible when collapsed */
  visibility: visible !important;
}

.sidebar.collapsed .conversation-count-indicator {
  width: 20px;
  height: 20px;
  background: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: bold;
  margin: 0 auto;
}

.sidebar-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-icon {
  font-size: 1.5rem;
}

.logo h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}


.sidebar-content {
  flex: 1;
  padding: var(--spacing-lg);
  overflow-y: auto;
}

/* Section Headers */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
  padding: 0;
  background: none;
  border: none;
  width: 100%;
  cursor: pointer;
}

.section-header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.section-header svg {
  color: var(--text-secondary);
  flex-shrink: 0;
}

.section-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-header button {
  background: none;
  border: none;
  padding: 0;
}

/* Icon Buttons */
.icon-btn-sm {
  background: none;
  border: none;
  padding: 4px;
  cursor: pointer;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
}

.icon-btn-sm:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.icon-btn-sm svg {
  width: 16px;
  height: 16px;
}

/* Sections Spacing */
.conversations-section,
.settings-section,
.mode-section,
.chat-actions-section {
  margin-bottom: var(--spacing-lg);
}

/* Conversations Section */
.conversations-section .section-header {
  margin-bottom: var(--spacing-sm);
}

/* Ensure non-clickable section headers have default cursor */
.section-header:not(.settings-toggle) {
  cursor: default;
}

.section-header:not(.settings-toggle) button {
  cursor: pointer;
}

/* Settings Section (Collapsible) */
.settings-section {
  border-top: 1px solid var(--bg-tertiary);
  border-bottom: 1px solid var(--bg-tertiary);
  padding: var(--spacing-md) 0;
}

.settings-toggle {
  margin-bottom: 0;
}

.settings-toggle .chevron-icon {
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.settings-toggle[aria-expanded="false"] .chevron-icon {
  transform: rotate(-90deg);
}

.settings-content {
  margin-top: var(--spacing-md);
  display: block;
}

.settings-section .settings-content {
  display: block;
}

.settings-section[aria-collapsed="true"] .settings-content {
  display: none;
}

.settings-item {
  margin-bottom: var(--spacing-md);
}

.settings-item:last-child {
  margin-bottom: 0;
}

.settings-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.settings-label svg {
  width: 14px;
  height: 14px;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.prompt-control-group {
  display: flex;
  gap: var(--spacing-xs);
  align-items: flex-start;
}

.prompt-control-group .prompt-select {
  flex: 1;
  margin-bottom: 0;
}

.prompt-actions-inline {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}

/* Compact Mode Buttons */
.mode-buttons-compact {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mode-toggle-btn {
  width: 100%;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.65rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 3px;
  transition: all 0.2s ease;
  border: 1px solid var(--bg-tertiary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  cursor: pointer;
  min-height: 28px;
}

.mode-toggle-btn:hover:not(.disabled) {
  background-color: var(--bg-tertiary);
  border-color: var(--primary-color);
}

.mode-toggle-btn.active {
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: white;
  border-color: #16a34a;
}

.mode-toggle-btn.active:hover {
  background: linear-gradient(135deg, #16a34a, #15803d);
}

.mode-toggle-btn.emergency-mode-btn.active {
  background: linear-gradient(135deg, #dc2626, #b91c1c);
  border-color: #b91c1c;
}

.mode-toggle-btn.emergency-mode-btn.active:hover {
  background: linear-gradient(135deg, #b91c1c, #991b1b);
}

/* Developer Mode - Awesome Purple Styling */
#developerModeBtn.active {
  background: linear-gradient(135deg, #8b5cf6, #6a11cb);
  color: white;
  border-color: #6a11cb;
  box-shadow: 0 2px 8px rgba(139, 92, 246, 0.4);
}

#developerModeBtn.active:hover {
  background: linear-gradient(135deg, #7c3aed, #5b21b6);
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.6);
}

.mode-toggle-btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.mode-toggle-btn svg {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
}

.mode-toggle-btn span {
  flex: 1;
  text-align: left;
}

.mode-chevron {
  transition: transform var(--transition-fast);
  flex-shrink: 0;
  opacity: 0.6;
}

.mode-toggle-btn.active .mode-chevron {
  transform: rotate(180deg);
}

.teacher-mode-options {
  margin-top: var(--spacing-sm);
  padding-top: var(--spacing-sm);
  padding-left: var(--spacing-sm);
  border-left: 2px solid var(--primary-color);
  border-top: none;
}

/* Chat Actions Section */
.chat-actions-section {
  border-top: 1px solid var(--bg-tertiary);
  padding-top: var(--spacing-md);
}

.chat-actions-section .section-header {
  margin-bottom: var(--spacing-sm);
}

.chat-actions-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.sidebar-action-btn {
  width: 100%;
  padding: 4px 8px;
  border-radius: var(--radius-md);
  font-size: 0.7rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: all 0.2s ease;
  border: 1px solid var(--bg-tertiary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  cursor: pointer;
}

.sidebar-action-btn:hover:not(:disabled) {
  background-color: var(--bg-tertiary);
  border-color: var(--primary-color);
  transform: translateY(-1px);
}

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

.sidebar-action-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.sidebar-action-btn svg {
  flex-shrink: 0;
  width: 12px;
  height: 12px;
}

.sidebar-action-btn span {
  flex: 1;
  text-align: left;
}

/* Hide chat actions section when sidebar is collapsed */
.sidebar.collapsed .chat-actions-section {
  display: none;
}

/* Hide chat actions section when no messages */
.chat-actions-section.hidden {
  display: none;
}

.teacher-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-xs, 0.25rem);
  margin-top: var(--spacing-sm, 0.5rem);
}

.teacher-label:first-child {
  margin-top: 0;
}

.teacher-select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-md);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-md);
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--spacing-sm) center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: 2.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.teacher-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgb(99 102 241 / 0.1);
}

.teacher-select:hover {
  border-color: var(--primary-color);
}

.teacher-select option {
  padding: var(--spacing-sm);
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

[data-theme="dark"] .teacher-mode-options {
  border-top-color: var(--border-color, rgba(255, 255, 255, 0.1));
}

.conversation-list {
  list-style: none;
  overflow: auto;
  padding: 0 var(--spacing-sm) var(--spacing-lg);
  margin: 0;
  min-height: 0;
}

.conversation-list li {
  margin-bottom: var(--spacing-xs);
}

.conversation-list a {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  font-size: 0.875rem;
  text-align: left; /* Ensure conversation titles align left */
}

.conversation-list a:hover,
.conversation-list a.active {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.conversation-item {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.conversation-item:hover .delete-conversation-btn {
  opacity: 1;
}

.delete-conversation-btn {
  opacity: 0;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: var(--spacing-sm);
  min-width: 24px;
  min-height: 24px;
}

/* Make delete button visible when collapsed */
.delete-conversation-btn.collapsed {
  opacity: 0.7;
  padding: 4px;
  min-width: 20px;
  min-height: 20px;
}

.delete-conversation-btn.collapsed:hover {
  opacity: 1;
}

.delete-conversation-btn:hover {
  color: var(--danger-color);
  background-color: var(--bg-tertiary);
}

.prompt-select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-md);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-md);
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--spacing-sm) center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: 2.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.prompt-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgb(99 102 241 / 0.1);
}

.prompt-select:hover {
  border-color: var(--primary-color);
}

.prompt-select option {
  padding: var(--spacing-sm);
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

/* Voice Select Styles */
.voice-select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-md);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.875rem;
  margin-bottom: 0;
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--spacing-sm) center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: 2.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.voice-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgb(99 102 241 / 0.1);
}

.voice-select:hover {
  border-color: var(--primary-color);
}

.voice-select option {
  padding: var(--spacing-sm);
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

.voice-select option:disabled {
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  font-weight: 600;
  font-style: italic;
}

.selected-prompt {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  margin-bottom: var(--spacing-md);
  font-size: 0.875rem;
  color: var(--text-primary);
  display: none;
}

.selected-prompt strong {
  color: var(--primary-color);
}

.prompt-actions {
  display: flex;
  gap: var(--spacing-sm);
}

/* Legacy styles for backward compatibility */
.teacher-btn--sidebar,
.emergency-btn--sidebar {
  width: 100%;
  padding: var(--spacing-sm, 0.75rem) var(--spacing-md, 1rem);
  border-radius: var(--radius-md, 0.5rem);
  font-size: 0.875rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm, 0.5rem);
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
}

.teacher-btn--sidebar {
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: white;
}

.teacher-btn--sidebar:hover:not(.disabled) {
  background: linear-gradient(135deg, #16a34a, #15803d);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.3);
}

.teacher-btn--sidebar.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.emergency-btn--sidebar {
  background: linear-gradient(135deg, #dc2626, #b91c1c);
  color: white;
}

.emergency-btn--sidebar:hover:not(.disabled) {
  background: linear-gradient(135deg, #b91c1c, #991b1b);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
}

.emergency-btn--sidebar.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.teacher-btn--sidebar svg,
.emergency-btn--sidebar svg {
  flex-shrink: 0;
}

.teacher-btn--sidebar span,
.emergency-btn--sidebar span {
  flex: 1;
  text-align: left;
}

[data-theme="dark"] .teacher-btn--sidebar {
  background: linear-gradient(135deg, #22c55e, #16a34a);
}

[data-theme="dark"] .emergency-btn--sidebar {
  background: linear-gradient(135deg, #b91c1c, #991b1b);
}

.new-chat-btn {
  margin: var(--spacing-lg);
  padding: 6px 10px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

.new-chat-btn:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

/* Main Content */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  /* Allow children (like .chat-messages) to shrink and scroll properly */
  min-height: 0;
}

.chat-header {
  padding: var(--spacing-lg) var(--spacing-xl);
  border-bottom: 1px solid var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-primary);
  position: sticky;
  top: 0;
  z-index: 100;
}

.chat-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-left: 0; /* No longer needed since toggle is inside sidebar */
  margin-top: 0; /* Reset margin-top */
}

.chat-icon {
  font-size: 1.5rem;
  color: var(--primary-color);
}

.chat-title h1 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  row-gap: var(--spacing-xs);
}

.logout-btn,
.theme-toggle {
  background: none;
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--text-primary);
}

.logout-btn:hover,
.theme-toggle:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--primary-color);
}

.logout-btn:hover {
  border-color: var(--danger-color);
  color: var(--danger-color);
}

.theme-icon {
  transition: all var(--transition-fast);
}

.theme-icon.moon-icon {
  display: none;
}

[data-theme="dark"] .theme-icon.sun-icon {
  display: none;
}

[data-theme="dark"] .theme-icon.moon-icon {
  display: block;
}

/* Notification Styles - Top Left, Less Intrusive */
.notification {
  position: fixed;
  top: 20px; /* Top of screen */
  left: var(--spacing-lg);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  color: rgba(255, 255, 255, 0.95);
  font-weight: 400;
  font-size: 0.875rem;
  z-index: 10000;
  transform: translateX(-100%);
  transition: transform 0.25s ease-out, opacity 0.25s ease-out;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  max-width: 280px;
  word-wrap: break-word;
  background-color: var(--primary-color);
  opacity: 0.9;
  backdrop-filter: blur(4px);
}

.notification.show {
  transform: translateX(0);
  opacity: 0.95;
}

.notification-success {
  background-color: rgba(34, 197, 94, 0.9); /* Softer green */
}

.notification-error {
  background-color: rgba(239, 68, 68, 0.9); /* Softer red */
}

.notification-warning {
  background-color: rgba(234, 179, 8, 0.9); /* Softer yellow */
}

.notification-info {
  background-color: rgba(59, 130, 246, 0.9); /* Softer blue */
}

/* Copy Button Styles */
.copy-button {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background: var(--bg-primary);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xs);
  cursor: pointer;
  opacity: 0;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.message-wrapper:hover .copy-button {
  opacity: 1;
}

.copy-button:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--primary-color);
}

.copy-button:active {
  transform: scale(0.95);
}

/* Response Buttons Styles */
.response-buttons {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
  padding: var(--spacing-sm);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--bg-tertiary);
}

.response-buttons button {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-sm);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.875rem;
  font-weight: 500;
}

.response-buttons button:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--primary-color);
  transform: translateY(-1px);
}

.good-response:hover {
  background-color: var(--success-color);
  color: white;
  border-color: var(--success-color);
}

.bad-response:hover {
  background-color: var(--danger-color);
  color: white;
  border-color: var(--danger-color);
}

.copy-response-button:hover {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* Code Block Copy Button */
.copy-btn {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background-color: var(--bg-primary);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  cursor: pointer;
  font-size: 0.75rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  opacity: 0;
}

pre:hover .copy-btn {
  opacity: 1;
}

.copy-btn:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--primary-color);
}

.chat-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.chat-actions.hidden {
  display: none;
}

/* Chat Messages */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-lg) var(--spacing-xl);
  background-color: var(--bg-primary);
  /* Ensure internal scroll works inside flex parent */
  min-height: 0;
  overscroll-behavior: contain;
}

.welcome-message {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 400px;
}

.welcome-content {
  text-align: center;
  max-width: 400px;
}

.welcome-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
}

.welcome-content h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.welcome-content p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Message Styles */
.message-wrapper {
  margin-bottom: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  position: relative;
  width: 100%;
}

.message-wrapper.user {
  align-items: flex-end;
}

.message-wrapper.bot {
  align-items: flex-start;
}

/* Image-only messages (no bubble) */
.message-wrapper.image-only {
  margin-bottom: var(--spacing-md);
}

.message-wrapper.image-only img {
  max-width: 70%;
  width: auto;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  object-fit: contain;
}

.message-wrapper.image-only img:hover {
  transform: scale(1.02);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.message-wrapper.image-only.user {
  align-items: flex-end;
}

.message-wrapper.image-only.bot {
  align-items: flex-start;
}

.message-wrapper.image-only .timestamp {
  margin-top: var(--spacing-xs);
  font-size: 0.75rem;
  opacity: 0.7;
}

.message {
  max-width: 70%;
  min-width: 200px;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-lg);
  position: relative;
  word-wrap: break-word;
  word-break: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
  display: block;
  text-align: left;
}

.message.user {
  background-color: var(--primary-color);
  color: white;
  border-bottom-right-radius: var(--radius-sm);
}

.message.bot {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--bg-tertiary);
  border-bottom-left-radius: var(--radius-sm);
}

/* Remove bubble styling when message only contains code blocks */
.message.bot:has(pre.code-container:only-child),
.message.bot:has(.code-container:only-child),
.message.bot:has(> pre:only-child) {
  background-color: transparent;
  border: none;
  padding: 0;
  box-shadow: none;
}

/* Fallback for browsers that don't support :has() */
.message.bot.code-only {
  background-color: transparent;
  border: none;
  padding: 0;
  box-shadow: none;
}

.message.typing {
  background-color: var(--bg-secondary);
  border: 1px solid var(--bg-tertiary);
}

.timestamp {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: var(--spacing-xs);
  padding: 0 var(--spacing-sm);
}

/* Chat Input */
.chat-input-container {
  padding: var(--spacing-lg) var(--spacing-xl);
  background-color: var(--bg-primary);
  border-top: 1px solid var(--bg-tertiary);
  /* Keep input visible at the bottom in responsive modes */
  position: sticky;
  bottom: 0px;
  z-index: 101;
  overflow: visible; /* Ensure controls are accessible */
}

.chat-input {
  display: flex;
  gap: var(--spacing-sm);
  align-items: flex-end;
  flex-wrap: nowrap;
  min-width: 0; /* Allow flex items to shrink below content size */
  overflow: visible; /* Ensure controls are accessible */
  position: relative;
}

/* Input row wrapper - groups input and send button */
.input-row {
  display: flex;
  flex-direction: row;
  gap: var(--spacing-sm);
  align-items: center;
  flex: 1;
  min-width: 0;
}

.input-row input,
.chat-input input {
  flex: 1 1 auto;
  min-width: 0; /* Allow input to shrink below its content */
  padding: var(--spacing-md) var(--spacing-lg);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-lg);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 1rem;
  resize: none;
  outline: none;
  transition: all var(--transition-fast);
}

.input-row input:focus,
.chat-input input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgb(99 102 241 / 0.1);
}

.send-btn {
  flex-shrink: 0; /* Prevent send button from shrinking */
  min-width: 44px; /* Minimum touch target size */
  padding: var(--spacing-md);
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.send-btn:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

.send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Stop Button */
.stop-btn {
  padding: var(--spacing-md);
  background-color: var(--danger-color);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  font-weight: 500;
  font-size: 0.875rem;
  box-shadow: var(--shadow-sm);
}

.stop-btn:hover {
  background-color: #dc2626;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.stop-btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.stop-btn svg {
  flex-shrink: 0;
}

/* TTS Toggle Button */
.tts-toggle {
  padding: var(--spacing-md);
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.tts-toggle:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.tts-toggle.active {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.tts-toggle.active:hover {
  background-color: var(--primary-hover);
}

.tts-toggle:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Selected Prompt Display */
.selected-prompt {
  background-color: var(--bg-secondary);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.selected-prompt strong {
  color: var(--text-primary);
}

/* Response Buttons */
.response-buttons {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm);
}

.response-buttons button {
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-sm);
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.response-buttons .good-response:hover {
  background-color: var(--success-color);
  color: white;
  border-color: var(--success-color);
}

.response-buttons .bad-response:hover {
  background-color: var(--danger-color);
  color: white;
  border-color: var(--danger-color);
}

.response-buttons .copy-button:hover {
  background-color: var(--secondary-color);
  color: white;
  border-color: var(--secondary-color);
}

/* Code Blocks */
pre {
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  overflow-x: auto;
  margin: var(--spacing-md) 0;
  position: relative;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  /* Dark mode default */
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  border: 1px solid rgba(106, 17, 203, 0.3);
}

/* Ensure code-container has proper dark background */
.code-container {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  border: 1px solid rgba(106, 17, 203, 0.3);
}

/* Light mode code-container */
body:not([data-theme="dark"]) .code-container {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border: 1px solid rgba(106, 17, 203, 0.2);
}

/* Expandable diff previews */
.code-container.diff-preview {
  position: relative;
  pointer-events: auto;
}

.code-container.diff-preview .diff-preview-content {
  max-height: 250px;
  overflow-y: auto;
  display: block;
}

.code-container.diff-preview .diff-full-content {
  display: none;
}

.code-container.diff-preview[data-is-expanded="true"] .diff-preview-content {
  display: none;
}

.code-container.diff-preview[data-is-expanded="true"] .diff-full-content {
  display: block;
  max-height: 600px;
  overflow-y: auto;
}

.expand-diff-btn {
  position: absolute;
  top: 8px;
  right: 90px; /* Position to the left of copy button (accounting for "Copied!" text width) */
  background: rgba(106, 17, 203, 0.9);
  color: white;
  border: 1px solid rgba(139, 92, 246, 0.5);
  padding: 4px 12px;
  font-size: 12px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 8px rgba(106, 17, 203, 0.3);
  z-index: 12; /* Higher than copy button (z-index: 10) */
  font-weight: 500;
  pointer-events: auto;
  user-select: none;
  -webkit-user-select: none;
  white-space: nowrap; /* Prevent text wrapping */
}

.expand-diff-btn:hover {
  background: rgba(139, 92, 246, 1);
  border-color: rgba(167, 139, 250, 0.8);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(106, 17, 203, 0.4);
}

/* Light mode diff preview */
body:not([data-theme="dark"]) .code-container.diff-preview {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

body:not([data-theme="dark"]) .expand-diff-btn {
  background: rgba(106, 17, 203, 0.9);
  color: white;
}

code {
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.875rem;
  /* Dark mode default */
  color: #e2e8f0;
}

/* Custom Syntax Highlighting Styles */
.hljs {
  display: block;
  overflow-x: auto;
  padding: 0;
  background: transparent;
  /* Dark mode default */
  color: #e2e8f0;
}

/* Light mode hljs */
body:not([data-theme="dark"]) .hljs {
  color: #1e293b;
}

/* Dark mode hljs */
[data-theme="dark"] .hljs {
  color: #e2e8f0;
}

/* Ensure message code blocks respect theme */
[data-theme="dark"] .message .hljs,
[data-theme="dark"] .message pre code,
[data-theme="dark"] .message pre code.hljs,
[data-theme="dark"] .message .code-container code.hljs {
  background: transparent !important;
  color: #e2e8f0 !important;
}

/* Comments */
.hljs-comment,
.hljs-quote {
  color: #64748b;
  font-style: italic;
}

/* Keywords */
.hljs-keyword,
.hljs-selector-tag,
.hljs-built_in,
.hljs-name,
.hljs-tag {
  color: #8b5cf6;
  font-weight: 600;
}

/* Strings */
.hljs-string,
.hljs-attr {
  color: #10b981;
}

/* Numbers */
.hljs-number,
.hljs-literal {
  color: #f59e0b;
}

/* Functions */
.hljs-function,
.hljs-title {
  color: #3b82f6;
}

/* Variables */
.hljs-variable,
.hljs-template-variable {
  color: #06b6d4;
}

/* Types */
.hljs-type,
.hljs-class .hljs-title {
  color: #ec4899;
}

/* Punctuation */
.hljs-punctuation {
  color: #cbd5e1;
}

/* Operators */
.hljs-operator {
  color: #f472b6;
}

/* Attributes */
.hljs-attribute {
  color: #34d399;
}

/* Meta */
.hljs-meta {
  color: #818cf8;
}

/* Regex */
.hljs-regexp {
  color: #22d3ee;
}

/* Deleted */
.hljs-deletion {
  background-color: rgba(239, 68, 68, 0.2);
  color: #f87171;
}

/* Added */
.hljs-addition {
  background-color: rgba(16, 185, 129, 0.2);
  color: #34d399;
}

/* Inline code */
code:not(pre code) {
  background: linear-gradient(135deg, rgba(106, 17, 203, 0.1), rgba(37, 117, 252, 0.1));
  color: #6a11cb;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  border: 1px solid rgba(106, 17, 203, 0.2);
  font-weight: 500;
}

/* Dark mode code blocks */
[data-theme="dark"] pre {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%) !important;
  border-color: rgba(139, 92, 246, 0.4);
  color: #e2e8f0 !important;
}

/* Dark mode code containers - ensure they override highlight.js */
[data-theme="dark"] .code-container {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%) !important;
  border-color: rgba(139, 92, 246, 0.4) !important;
}

[data-theme="dark"] .code-container pre {
  background: transparent !important;
}

/* Ensure all pre elements in dark mode use dark theme */
[data-theme="dark"] .message pre,
[data-theme="dark"] .message .code-container,
[data-theme="dark"] .message pre code,
[data-theme="dark"] .message pre code.hljs,
[data-theme="dark"] .message .code-container pre code,
[data-theme="dark"] .message .code-container pre code.hljs {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%) !important;
  color: #e2e8f0 !important;
}

/* Force dark mode for all code blocks in messages */
[data-theme="dark"] .message pre.code-container,
[data-theme="dark"] .message pre.code-container code,
[data-theme="dark"] .message pre.code-container code.hljs {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%) !important;
  color: #e2e8f0 !important;
}

[data-theme="dark"] code:not(pre code) {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(99, 102, 241, 0.15));
  color: #a78bfa;
  border-color: rgba(139, 92, 246, 0.3);
}

/* Dark mode syntax highlighting overrides */
[data-theme="dark"] .hljs-comment,
[data-theme="dark"] .hljs-quote {
  color: #94a3b8;
}

[data-theme="dark"] .hljs-deletion {
  background-color: rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

[data-theme="dark"] .hljs-addition {
  background-color: rgba(16, 185, 129, 0.3);
  color: #6ee7b7;
}

[data-theme="dark"] .hljs-meta {
  color: #a5b4fc;
}

/* Light mode adjustments */
body:not([data-theme="dark"]) pre {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border-color: rgba(106, 17, 203, 0.2);
  color: #1e293b;
}

body:not([data-theme="dark"]) code {
  color: #1e293b;
}

body:not([data-theme="dark"]) .hljs {
  color: #1e293b;
}

body:not([data-theme="dark"]) .hljs-keyword,
body:not([data-theme="dark"]) .hljs-selector-tag,
body:not([data-theme="dark"]) .hljs-built_in,
body:not([data-theme="dark"]) .hljs-name,
body:not([data-theme="dark"]) .hljs-tag {
  color: #6a11cb;
}

body:not([data-theme="dark"]) .hljs-string,
body:not([data-theme="dark"]) .hljs-attr {
  color: #059669;
}

body:not([data-theme="dark"]) .hljs-number,
body:not([data-theme="dark"]) .hljs-literal {
  color: #d97706;
}

body:not([data-theme="dark"]) .hljs-function,
body:not([data-theme="dark"]) .hljs-title {
  color: #2563eb;
}

body:not([data-theme="dark"]) .hljs-comment,
body:not([data-theme="dark"]) .hljs-quote {
  color: #64748b;
}

body:not([data-theme="dark"]) .hljs-deletion {
  background-color: rgba(239, 68, 68, 0.15);
  color: #dc2626;
}

body:not([data-theme="dark"]) .hljs-addition {
  background-color: rgba(16, 185, 129, 0.15);
  color: #059669;
}

body:not([data-theme="dark"]) .hljs-meta {
  color: #6366f1;
}

/* ========================================
   MARKDOWN ELEMENT STYLING
   ======================================== */

/* Markdown styling within bot messages */
.message.bot {
  /* Ensure proper spacing for markdown elements */
  line-height: 1.5;
}

/* Headings */
.message.bot h1,
.message.bot h2,
.message.bot h3,
.message.bot h4,
.message.bot h5,
.message.bot h6 {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
}

.message.bot h1:first-child,
.message.bot h2:first-child,
.message.bot h3:first-child,
.message.bot h4:first-child,
.message.bot h5:first-child,
.message.bot h6:first-child {
  margin-top: 0;
}

.message.bot h1 {
  font-size: 2rem;
  border-bottom: 2px solid var(--bg-tertiary);
  padding-bottom: var(--spacing-sm);
  color: var(--primary-color);
}

.message.bot h2 {
  font-size: 1.75rem;
  border-bottom: 1px solid var(--bg-tertiary);
  padding-bottom: var(--spacing-xs);
  color: var(--primary-color);
}

.message.bot h3 {
  font-size: 1.5rem;
  color: var(--text-primary);
}

.message.bot h4 {
  font-size: 1.25rem;
  color: var(--text-primary);
}

.message.bot h5 {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

.message.bot h6 {
  font-size: 1rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Paragraphs */
.message.bot p {
  margin-top: 0.25rem;
  margin-bottom: 0.25rem;
  line-height: 1.5;
}

.message.bot p:first-child {
  margin-top: 0;
}

.message.bot p:last-child {
  margin-bottom: 0;
}

/* Lists */
.message.bot ul,
.message.bot ol {
  margin: var(--spacing-md) 0;
  padding-left: var(--spacing-xl);
  line-height: 1.7;
}

.message.bot ul {
  list-style-type: disc;
}

.message.bot ol {
  list-style-type: decimal;
}

.message.bot li {
  margin: var(--spacing-xs) 0;
  padding-left: var(--spacing-xs);
}

.message.bot li > p {
  margin-top: var(--spacing-xs);
  margin-bottom: var(--spacing-xs);
}

.message.bot li > ul,
.message.bot li > ol {
  margin-top: var(--spacing-xs);
  margin-bottom: var(--spacing-xs);
}

/* Nested lists */
.message.bot ul ul,
.message.bot ol ol,
.message.bot ul ol,
.message.bot ol ul {
  margin-top: var(--spacing-xs);
  margin-bottom: var(--spacing-xs);
}

.message.bot ul ul {
  list-style-type: circle;
}

.message.bot ul ul ul {
  list-style-type: square;
}

/* Blockquotes */
.message.bot blockquote {
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-md) var(--spacing-lg);
  border-left: 4px solid var(--primary-color);
  background: linear-gradient(135deg, rgba(106, 17, 203, 0.05), rgba(37, 117, 252, 0.05));
  border-radius: var(--radius-md);
  font-style: italic;
  color: var(--text-secondary);
  position: relative;
}

.message.bot blockquote p {
  margin: 0;
}

.message.bot blockquote p:not(:last-child) {
  margin-bottom: var(--spacing-sm);
}

.message.bot blockquote::before {
  content: '"';
  font-size: 4rem;
  position: absolute;
  left: var(--spacing-md);
  top: -10px;
  color: rgba(106, 17, 203, 0.2);
  font-family: Georgia, serif;
  line-height: 1;
}

/* Links */
.message.bot a {
  color: var(--primary-color);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: all var(--transition-fast);
  font-weight: 500;
}

.message.bot a:hover {
  color: var(--primary-hover);
  border-bottom-color: var(--primary-color);
}

.message.bot a:visited {
  color: #8b5cf6;
}

/* Strong/Bold - Enhanced visibility */
.message.bot strong,
.message.bot b {
  font-weight: 700 !important;
  color: var(--text-primary, #ffffff) !important;
  letter-spacing: 0.01em;
  display: inline;
  /* Add subtle text shadow for better definition */
  text-shadow: 0 0.5px 1px rgba(0, 0, 0, 0.2);
}

/* Emphasis/Italic */
.message.bot em,
.message.bot i {
  font-style: italic;
  color: var(--text-secondary);
}

/* Code (inline) - already styled above, but ensure it works in markdown context */
.message.bot p code,
.message.bot li code,
.message.bot td code,
.message.bot th code {
  background: linear-gradient(135deg, rgba(106, 17, 203, 0.1), rgba(37, 117, 252, 0.1));
  color: #6a11cb;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  border: 1px solid rgba(106, 17, 203, 0.2);
  font-weight: 500;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
}

/* Horizontal Rules */
.message.bot hr {
  margin: var(--spacing-xl) 0;
  border: none;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--bg-tertiary), transparent);
}

.message.bot hr::after {
  content: '';
  display: block;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
  margin-top: -1px;
}

/* Tables */
.message.bot table {
  width: 100%;
  margin: var(--spacing-lg) 0;
  border-collapse: collapse;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--bg-tertiary);
}

.message.bot thead {
  background: linear-gradient(135deg, rgba(106, 17, 203, 0.1), rgba(37, 117, 252, 0.1));
  border-bottom: 2px solid var(--primary-color);
}

.message.bot th {
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: left;
  font-weight: 600;
  color: var(--primary-color);
  border-right: 1px solid var(--bg-tertiary);
}

.message.bot th:last-child {
  border-right: none;
}

.message.bot td {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--bg-tertiary);
  border-right: 1px solid var(--bg-tertiary);
}

.message.bot td:last-child {
  border-right: none;
}

.message.bot tbody tr:hover {
  background-color: var(--bg-tertiary);
}

.message.bot tbody tr:last-child td {
  border-bottom: none;
}

/* Images in Chat Messages */
.message.bot img,
.message.user img {
  max-width: 100%;
  width: auto;
  max-height: 400px;
  height: auto;
  border-radius: var(--radius-lg);
  margin: var(--spacing-md) 0;
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--bg-tertiary);
  cursor: pointer;
  transition: all var(--transition-medium);
  display: block;
  object-fit: contain;
  background: var(--bg-secondary);
  padding: var(--spacing-xs);
}

.message.bot img:hover,
.message.user img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.message.bot img:active,
.message.user img:active {
  transform: scale(0.98);
}

/* Image Container with Expand Overlay */
.message.bot .image-container,
.message.user .image-container {
  position: relative;
  display: inline-block;
  max-width: 100%;
  width: auto;
  margin: var(--spacing-md) 0;
}

.message.bot .image-container img,
.message.user .image-container img {
  margin: 0;
}

.image-expand-overlay {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background: rgba(0, 0, 0, 0.75);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 500;
  opacity: 0;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  pointer-events: none;
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  transform: translateY(-2px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  z-index: 10;
}

.image-container:hover .image-expand-overlay {
  opacity: 1;
  transform: translateY(0);
}

.image-expand-overlay:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
  opacity: 1;
}

.image-expand-overlay svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.image-expand-overlay span {
  white-space: nowrap;
}

/* Image Lightbox/Modal */
.image-lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  z-index: 10000;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 0.3s ease-out;
}

.image-lightbox.show {
  display: flex;
  opacity: 1;
}

.image-lightbox-content {
  position: relative;
  max-width: 95vw;
  max-height: 95vh;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.95);
  transition: transform 0.3s ease-out;
}

.image-lightbox.show .image-lightbox-content {
  transform: scale(1);
}

.image-lightbox img.lightbox-image {
  max-width: 100%;
  max-height: 95vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  animation: zoomIn 0.3s ease-out;
}

.image-lightbox-close {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: white;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
  z-index: 10001;
}

.image-lightbox-close:hover,
.image-lightbox-close:focus {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.35);
  transform: rotate(90deg) scale(1.1);
  outline: none;
}

.image-lightbox-close:active {
  transform: rotate(90deg) scale(0.95);
}

.image-lightbox-close svg {
  width: 20px;
  height: 20px;
  pointer-events: none;
}

@keyframes zoomIn {
  0% {
    transform: scale(0.9);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes fadeIn {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

/* Task Lists (Checkboxes) */
.message.bot input[type="checkbox"] {
  margin-right: var(--spacing-sm);
  cursor: pointer;
  accent-color: var(--primary-color);
}

.message.bot li:has(input[type="checkbox"]) {
  list-style: none;
  margin-left: calc(-1 * var(--spacing-xl));
}

/* Dark Mode Markdown Styling */
[data-theme="dark"] .message.bot h1,
[data-theme="dark"] .message.bot h2 {
  border-bottom-color: rgba(139, 92, 246, 0.3);
  color: #a78bfa;
}

[data-theme="dark"] .message.bot blockquote {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(99, 102, 241, 0.1));
  border-left-color: #8b5cf6;
  color: var(--dark-text-secondary);
}

[data-theme="dark"] .message.bot blockquote::before {
  color: rgba(139, 92, 246, 0.3);
}

[data-theme="dark"] .message.bot a {
  color: #a78bfa;
}

[data-theme="dark"] .message.bot a:hover {
  color: #c4b5fd;
  border-bottom-color: #a78bfa;
}

[data-theme="dark"] .message.bot a:visited {
  color: #8b5cf6;
}

[data-theme="dark"] .message.bot p code,
[data-theme="dark"] .message.bot li code,
[data-theme="dark"] .message.bot td code,
[data-theme="dark"] .message.bot th code {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(99, 102, 241, 0.15));
  color: #a78bfa;
  border-color: rgba(139, 92, 246, 0.3);
}

[data-theme="dark"] .message.bot thead {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(99, 102, 241, 0.15));
  border-bottom-color: #8b5cf6;
}

[data-theme="dark"] .message.bot th {
  color: #a78bfa;
}

[data-theme="dark"] .message.bot hr {
  background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.3), transparent);
}

[data-theme="dark"] .message.bot hr::after {
  background: linear-gradient(90deg, transparent, #8b5cf6, transparent);
}

/* Light Mode Markdown Enhancements */
body:not([data-theme="dark"]) .message.bot blockquote {
  background: linear-gradient(135deg, rgba(106, 17, 203, 0.08), rgba(37, 117, 252, 0.08));
}

body:not([data-theme="dark"]) .message.bot thead {
  background: linear-gradient(135deg, rgba(106, 17, 203, 0.1), rgba(37, 117, 252, 0.1));
}

/* Mobile Responsive Markdown */
@media (max-width: 768px) {
  .message.bot h1 {
    font-size: 1.75rem;
  }
  
  .message.bot h2 {
    font-size: 1.5rem;
  }
  
  .message.bot h3 {
    font-size: 1.25rem;
  }
  
  .message.bot table {
    font-size: 0.875rem;
  }
  
  .message.bot th,
  .message.bot td {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .message.bot blockquote {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  /* Mobile Chat Input Fixes */
  .chat-input-container {
    padding: var(--spacing-md) var(--spacing-sm);
    overflow: visible; /* Ensure controls are accessible */
  }
  
  .chat-input {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    overflow: visible; /* Ensure controls are accessible */
  }
  
  /* Voice controls row - full width, own row */
  .voice-controls {
    width: 100%;
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
  }
  
  .vision-toggle-container {
    gap: 2px;
  }
  
  .vision-toggle,
  .tts-toggle,
  .mic-toggle {
    padding: 6px;
    min-width: 36px;
    min-height: 36px;
  }
  
  .vision-toggle svg,
  .tts-toggle svg,
  .mic-toggle svg {
    width: 18px;
    height: 18px;
  }
  
  /* Input row - input and send button side by side */
  .input-row {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-xs);
    align-items: center;
    width: 100%;
  }
  
  .input-row input {
    flex: 1;
    min-width: 0;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.95rem;
  }
  
  .input-row .send-btn {
    flex-shrink: 0;
    padding: var(--spacing-sm);
    min-width: 44px;
    min-height: 44px;
  }
  
  .send-btn svg {
    width: 18px;
    height: 18px;
  }
}

.copy-btn {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(106, 17, 203, 0.9);
  border: 1px solid rgba(139, 92, 246, 0.5);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  color: white;
  cursor: pointer;
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 8px rgba(106, 17, 203, 0.3);
  z-index: 10;
}

.copy-btn:hover {
  background: rgba(139, 92, 246, 1);
  border-color: rgba(167, 139, 250, 0.8);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(106, 17, 203, 0.4);
}

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

/* Dark mode copy button */
[data-theme="dark"] .copy-btn {
  background: rgba(139, 92, 246, 0.9);
  border-color: rgba(167, 139, 250, 0.5);
}

[data-theme="dark"] .copy-btn:hover {
  background: rgba(167, 139, 250, 1);
}

/* Light mode copy button */
body:not([data-theme="dark"]) .copy-btn {
  background: rgba(106, 17, 203, 0.9);
  border-color: rgba(106, 17, 203, 0.5);
}

body:not([data-theme="dark"]) .copy-btn:hover {
  background: rgba(106, 17, 203, 1);
  border-color: rgba(106, 17, 203, 0.8);
}

/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.modal.show {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background-color: var(--bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  max-width: 500px;
  width: 90%;
  max-height: 80vh;
  overflow: hidden;
  animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: scale(0.9) translateY(-20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-header {
  padding: var(--spacing-lg) var(--spacing-xl);
  border-bottom: 1px solid var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.modal-header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.modal-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--spacing-xl);
  overflow-y: auto;
  max-height: calc(90vh - 120px); /* Account for header/footer */
}

.modal-footer {
  padding: var(--spacing-lg) var(--spacing-xl);
  border-top: 1px solid var(--bg-tertiary);
  display: flex;
  gap: var(--spacing-sm);
  justify-content: flex-end;
}

/* Form Styles */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-md);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgb(99 102 241 / 0.1);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

/* Button Styles */
.btn {
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  text-decoration: none;
  font-size: 0.875rem;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

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

.btn-secondary {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--bg-tertiary);
}

.btn-secondary:hover {
  background-color: var(--bg-tertiary);
}

.btn-danger {
  background-color: var(--danger-color);
  color: white;
}

.btn-danger:hover {
  background-color: #dc2626;
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.75rem;
}

/* Typing Animation */
.typing {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.typing span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--text-muted);
  animation: typing 1.4s infinite ease-in-out;
}

.typing span:nth-child(2) {
  animation-delay: 0.2s;
}

.typing span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typing {
  0%, 60%, 100% {
    transform: translateY(0);
    opacity: 0.4;
  }
  30% {
    transform: translateY(-10px);
    opacity: 1;
  }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* Focus Styles */
*:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Selection Styles */
::selection {
  background-color: rgb(99 102 241 / 0.2);
  color: var(--text-primary);
}

/* ========================================
   EMERGENCY DESIGN SYSTEM
   ======================================== */

/* Emergency Design Tokens */
:root {
  /* Emergency Color Palette */
  --emergency-primary: #22c55e;
  --emergency-primary-hover: #16a34a;
  --emergency-primary-dark: #15803d;
  --emergency-secondary: #f59e0b;
  --emergency-secondary-hover: #d97706;
  --emergency-success: #10b981;
  --emergency-danger: #ef4444;
  --emergency-danger-hover: #dc2626;
  
  /* Emergency Background Gradients */
  --emergency-bg-primary: linear-gradient(135deg, #f0fdf4, #dcfce7);
  --emergency-bg-secondary: linear-gradient(135deg, #22c55e, #16a34a);
  --emergency-bg-warning: linear-gradient(135deg, #fef3c7, #fde68a);
  --emergency-bg-dark-primary: linear-gradient(135deg, #1e3a8a, #1e40af);
  --emergency-bg-dark-secondary: linear-gradient(135deg, #0f172a, #1e293b);
  
  /* Emergency Typography */
  --emergency-font-weight-bold: 700;
  --emergency-font-weight-semibold: 600;
  --emergency-font-weight-medium: 500;
  
  /* Emergency Spacing */
  --emergency-spacing-xs: 0.25rem;
  --emergency-spacing-sm: 0.5rem;
  --emergency-spacing-md: 1rem;
  --emergency-spacing-lg: 1.5rem;
  --emergency-spacing-xl: 2rem;
  
  /* Emergency Border Radius */
  --emergency-radius-sm: 0.375rem;
  --emergency-radius-md: 0.5rem;
  --emergency-radius-lg: 0.75rem;
  --emergency-radius-xl: 1rem;
  
  /* Emergency Shadows */
  --emergency-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --emergency-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --emergency-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

/* Emergency Mode Base Styles */
.emergency-mode {
  --primary-color: var(--emergency-primary);
  --primary-hover: var(--emergency-primary-hover);
}

/* ========================================
   EMERGENCY DARK MODE STYLES
   ======================================== */

[data-theme="dark"] .emergency-mode {
  --primary-color: #4ade80;
  --primary-hover: #22c55e;
}

[data-theme="dark"] .emergency-mode .chat-header {
  background: var(--emergency-bg-dark-primary);
  border-bottom: 3px solid #4ade80;
}

[data-theme="dark"] .emergency-mode .main-content {
  background: var(--emergency-bg-dark-secondary);
}

[data-theme="dark"] .emergency-indicator {
  background: var(--emergency-bg-dark-primary);
  color: #f1f5f9;
}

[data-theme="dark"] .emergency-911-reminder {
  background: linear-gradient(135deg, #451a03, #78350f);
}

/* ========================================
   TEACHER MODE STYLES
   ======================================== */

:root {
  --teacher-primary-math: #3b82f6;
  --teacher-primary-science: #10b981;
  --teacher-primary-english: #8b5cf6;
  --teacher-primary-history: #f59e0b;
  --teacher-primary-general: #6b7280;
  --teacher-accent-color: var(--teacher-primary-general);
  --teacher-bg-primary: #f0f9ff;
  --teacher-bg-secondary: #e0f2fe;
  --teacher-border: #0ea5e9;
}

.teacher-mode {
  --primary-color: var(--teacher-accent-color);
  --primary-hover: var(--teacher-accent-color);
}

.teacher-btn {
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: white;
  border: none;
  padding: var(--spacing-sm, 0.5rem) var(--spacing-md, 1rem);
  border-radius: var(--radius-md, 0.5rem);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 0.5rem;
}

.teacher-btn:hover:not(.disabled) {
  background: linear-gradient(135deg, #16a34a, #15803d);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.4);
}

.teacher-btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.teacher-indicator {
  background: linear-gradient(135deg, var(--teacher-accent-color), var(--teacher-primary-general));
  color: white;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md, 0.5rem);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 1rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.teacher-indicator svg {
  width: 20px;
  height: 20px;
}

.exit-teacher-btn {
  margin-left: auto;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-sm, 0.25rem);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.exit-teacher-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

/* Subject-specific colors */
.teacher-mode[data-subject="math"] {
  --teacher-accent-color: var(--teacher-primary-math);
}

.teacher-mode[data-subject="science"] {
  --teacher-accent-color: var(--teacher-primary-science);
}

.teacher-mode[data-subject="english"] {
  --teacher-accent-color: var(--teacher-primary-english);
}

.teacher-mode[data-subject="history"] {
  --teacher-accent-color: var(--teacher-primary-history);
}

/* Dark mode teacher styles */
[data-theme="dark"] .teacher-mode {
  --teacher-bg-primary: #0f172a;
  --teacher-bg-secondary: #1e293b;
  --teacher-border: #60a5fa;
}

[data-theme="dark"] .teacher-indicator {
  background: linear-gradient(135deg, var(--teacher-accent-color), var(--teacher-primary-general));
  color: #f1f5f9;
}

[data-theme="dark"] .teacher-btn {
  background: linear-gradient(135deg, #22c55e, #16a34a);
}

[data-theme="dark"] .teacher-btn:hover:not(.disabled) {
  background: linear-gradient(135deg, #16a34a, #15803d);
}

[data-theme="dark"] .emergency-911-reminder h3 {
  color: #fbbf24;
}

[data-theme="dark"] .emergency-911-reminder p {
  color: #fcd34d;
}

[data-theme="dark"] .emergency-modal .modal-content {
  background: var(--emergency-bg-dark-secondary);
  color: #f1f5f9;
}

[data-theme="dark"] .emergency-modal .modal-header {
  background: var(--emergency-bg-dark-primary);
}

[data-theme="dark"] .emergency-911-reminder-modal {
  background: linear-gradient(135deg, #451a03, #78350f);
  border-color: var(--emergency-secondary);
}

[data-theme="dark"] .emergency-911-reminder-modal h3 {
  color: #fbbf24;
}

[data-theme="dark"] .emergency-911-reminder-modal p {
  color: #fcd34d;
}

[data-theme="dark"] .emergency-quick-actions h3 {
  color: #f1f5f9;
}

[data-theme="dark"] .emergency-action-btn {
  background: #1e293b;
  border-color: #334155;
  color: #f1f5f9;
}

[data-theme="dark"] .emergency-action-btn:hover {
  background: var(--emergency-bg-dark-primary);
  border-color: #60a5fa;
}

[data-theme="dark"] .emergency-action-title {
  color: #f1f5f9;
}

[data-theme="dark"] .emergency-action-desc {
  color: #cbd5e1;
}

[data-theme="dark"] .emergency-search h3 {
  color: #f1f5f9;
}

[data-theme="dark"] .search-input-group input {
  background: #1e293b;
  border-color: #334155;
  color: #f1f5f9;
}

[data-theme="dark"] .search-input-group input:focus {
  border-color: #60a5fa;
  background: #1e293b;
}

[data-theme="dark"] .setup-info h3 {
  color: #f1f5f9;
}

[data-theme="dark"] .setup-info p {
  color: #cbd5e1;
}

[data-theme="dark"] .setup-info li {
  color: #cbd5e1;
}

[data-theme="dark"] .setup-progress h4 {
  color: #f1f5f9;
}

[data-theme="dark"] .progress-text {
  color: #cbd5e1;
}

[data-theme="dark"] .status-item {
  background: #1e293b;
}

[data-theme="dark"] .status-item span:last-child {
  color: #cbd5e1;
}

/* Emergency Notifications */
.emergency-notification {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10000;
  max-width: 400px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  animation: slideInRight 0.3s ease-out;
}

.emergency-notification.success {
  background: linear-gradient(135deg, #10b981, #059669);
  border: 1px solid #34d399;
}

.emergency-notification.error {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  border: 1px solid #f87171;
}

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

.notification-icon,
.notification-content svg {
  width: 20px;
  height: 20px;
  margin-right: 12px;
  flex-shrink: 0;
}

.notification-text {
  flex: 1;
  font-weight: 500;
}

[data-theme="dark"] .emergency-notification.success {
  background: linear-gradient(135deg, #059669, #047857);
  border-color: #10b981;
}

[data-theme="dark"] .emergency-notification.error {
  background: linear-gradient(135deg, #dc2626, #b91c1c);
  border-color: #ef4444;
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* ========================================
   EMERGENCY BUTTON SYSTEM
   ======================================== */

/* Base Emergency Button */
.emergency-btn {
  background: var(--emergency-bg-secondary);
  color: white;
  border: none;
  padding: var(--emergency-spacing-sm) var(--emergency-spacing-md);
  border-radius: var(--emergency-radius-md);
  font-weight: var(--emergency-font-weight-semibold);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--emergency-spacing-sm);
  box-shadow: var(--emergency-shadow-sm);
  text-decoration: none;
  min-height: 40px;
}

.emergency-btn:hover:not(.disabled) {
  background: linear-gradient(135deg, var(--emergency-primary-hover), var(--emergency-primary-dark));
  transform: translateY(-1px);
  box-shadow: var(--emergency-shadow-md);
}

.emergency-btn:active:not(.disabled) {
  transform: translateY(0);
  box-shadow: var(--emergency-shadow-sm);
}

.emergency-btn.disabled {
  background: var(--text-muted);
  cursor: not-allowed;
  opacity: 0.6;
  transform: none;
}

.emergency-btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Emergency Button Variants */
.emergency-btn--primary {
  background: var(--emergency-bg-secondary);
}

.emergency-btn--secondary {
  background: var(--emergency-bg-warning);
  color: #92400e;
}

.emergency-btn--secondary:hover:not(.disabled) {
  background: linear-gradient(135deg, var(--emergency-secondary-hover), #b45309);
  color: white;
}

.emergency-btn--danger {
  background: linear-gradient(135deg, var(--emergency-danger), var(--emergency-danger-hover));
}

.emergency-btn--danger:hover:not(.disabled) {
  background: linear-gradient(135deg, var(--emergency-danger-hover), #b91c1c);
}

/* Emergency Button Sizes */
.emergency-btn--sm {
  padding: var(--emergency-spacing-xs) var(--emergency-spacing-sm);
  font-size: 0.75rem;
  min-height: 32px;
}

.emergency-btn--sm svg {
  width: 16px;
  height: 16px;
}

.emergency-btn--lg {
  padding: var(--emergency-spacing-md) var(--emergency-spacing-lg);
  font-size: 1rem;
  min-height: 48px;
}

.emergency-btn--lg svg {
  width: 20px;
  height: 20px;
}

/* Legacy Support - Map old classes to new system */
.emergency-help-btn {
  background: var(--emergency-bg-secondary);
  color: white;
  border: none;
  padding: var(--emergency-spacing-sm) var(--emergency-spacing-md);
  border-radius: var(--emergency-radius-md);
  font-weight: var(--emergency-font-weight-semibold);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--emergency-spacing-sm);
  box-shadow: var(--emergency-shadow-sm);
  text-decoration: none;
  min-height: 40px;
}

.emergency-help-btn:hover:not(.disabled) {
  background: linear-gradient(135deg, var(--emergency-primary-hover), var(--emergency-primary-dark));
  transform: translateY(-1px);
  box-shadow: var(--emergency-shadow-md);
}

.emergency-help-btn.disabled {
  background: var(--text-muted);
  cursor: not-allowed;
  opacity: 0.6;
  transform: none;
}

.emergency-help-btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* ========================================
   EMERGENCY MODE ACTIVE STYLES
   ======================================== */

.emergency-mode .chat-header {
  border-bottom: 3px solid var(--emergency-primary);
  background: var(--emergency-bg-primary);
}

.emergency-mode .main-content {
  background: var(--emergency-bg-primary);
  margin-left: 0; /* Remove sidebar toggle margin in emergency mode */
}

/* Hide non-essential UI elements in emergency mode */
.emergency-mode #emergencyHelpBtn {
  display: none !important;
}

.emergency-mode .theme-toggle {
  display: none !important;
}

.emergency-mode .chat-actions {
  display: none !important;
}

/* Keep sidebar toggle visible in emergency mode so users can access conversations */
/* .emergency-mode .sidebar-toggle {
  display: none !important;
} */

.emergency-indicator {
  display: flex;
  align-items: center;
  gap: var(--emergency-spacing-sm);
  background: var(--emergency-bg-secondary);
  color: white;
  padding: var(--emergency-spacing-sm) var(--emergency-spacing-md);
  border-radius: var(--emergency-radius-md);
  font-weight: var(--emergency-font-weight-semibold);
  font-size: 0.875rem;
  margin-left: auto;
  box-shadow: var(--emergency-shadow-sm);
}

.emergency-indicator svg {
  width: 18px;
  height: 18px;
}

.exit-emergency-btn {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
  padding: var(--emergency-spacing-xs) var(--emergency-spacing-sm);
  border-radius: var(--emergency-radius-sm);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-left: var(--emergency-spacing-sm);
}

.exit-emergency-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

.emergency-help-icon-btn {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
  padding: var(--emergency-spacing-xs);
  border-radius: var(--emergency-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-left: var(--emergency-spacing-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
}

.emergency-help-icon-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.05);
}

.emergency-help-icon-btn svg {
  width: 16px;
  height: 16px;
}

/* Emergency 911 Reminder */
.emergency-911-reminder {
  background: var(--emergency-bg-warning);
  border: 2px solid var(--emergency-secondary);
  border-radius: var(--emergency-radius-lg);
  padding: var(--emergency-spacing-lg);
  margin-bottom: var(--emergency-spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--emergency-spacing-md);
  box-shadow: var(--emergency-shadow-sm);
}

.emergency-911-reminder svg {
  color: var(--emergency-secondary);
  flex-shrink: 0;
}

.emergency-911-reminder h3 {
  color: #92400e;
  font-size: 1.125rem;
  font-weight: var(--emergency-font-weight-bold);
  margin-bottom: var(--emergency-spacing-xs);
}

.emergency-911-reminder p {
  color: #a16207;
  font-size: 0.875rem;
  margin: 0;
}

/* ========================================
   EMERGENCY MODAL SYSTEM
   ======================================== */

/* Base Emergency Modal */
.emergency-modal .modal-content {
  max-width: 600px;
  background: var(--emergency-bg-primary);
  border-radius: var(--emergency-radius-xl);
}

/* Emergency Modal Header */
.emergency-modal .modal-header {
  background: var(--emergency-bg-secondary);
  color: white;
  border-radius: var(--emergency-radius-xl) var(--emergency-radius-xl) 0 0;
  padding: var(--emergency-spacing-lg) var(--emergency-spacing-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.emergency-modal .modal-header h2 {
  color: white;
  font-size: 1.25rem;
  font-weight: var(--emergency-font-weight-semibold);
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--emergency-spacing-sm);
}

.emergency-modal .modal-header h2 svg {
  width: 24px;
  height: 24px;
}

.emergency-modal .modal-close {
  color: white;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--emergency-radius-sm);
  padding: var(--emergency-spacing-sm);
  transition: all var(--transition-fast);
}

.emergency-modal .modal-close:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
}

/* Emergency Modal Body */
.emergency-modal .modal-body {
  padding: var(--emergency-spacing-xl);
}

/* Emergency Modal Footer */
.emergency-modal .modal-footer {
  padding: var(--emergency-spacing-lg) var(--emergency-spacing-xl);
  border-top: 1px solid var(--bg-tertiary);
  display: flex;
  gap: var(--emergency-spacing-sm);
  justify-content: flex-end;
  background: var(--bg-primary);
  border-radius: 0 0 var(--emergency-radius-xl) var(--emergency-radius-xl);
}

.emergency-911-reminder-modal {
  background: var(--emergency-bg-warning);
  border: 2px solid var(--emergency-secondary);
  border-radius: var(--emergency-radius-lg);
  padding: var(--emergency-spacing-lg);
  margin-bottom: var(--emergency-spacing-xl);
  display: flex;
  align-items: center;
  gap: var(--emergency-spacing-md);
  box-shadow: var(--emergency-shadow-sm);
}

.emergency-911-reminder-modal svg {
  color: var(--emergency-secondary);
  flex-shrink: 0;
}

.emergency-911-reminder-modal h3 {
  color: #92400e;
  font-size: 1.25rem;
  font-weight: var(--emergency-font-weight-bold);
  margin-bottom: var(--emergency-spacing-xs);
}

.emergency-911-reminder-modal p {
  color: #a16207;
  font-size: 0.875rem;
  margin: 0;
}

/* ========================================
   EMERGENCY COMPONENT SYSTEM
   ======================================== */

/* Emergency Quick Actions */
.emergency-quick-actions {
  margin-bottom: var(--emergency-spacing-xl);
}

.emergency-quick-actions h3 {
  color: var(--text-primary);
  font-size: 1.125rem;
  font-weight: var(--emergency-font-weight-semibold);
  margin-bottom: var(--emergency-spacing-md);
  display: flex;
  align-items: center;
  gap: var(--emergency-spacing-sm);
}

.emergency-quick-actions h3 svg {
  width: 20px;
  height: 20px;
  color: var(--emergency-primary);
}

.emergency-action-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--emergency-spacing-md);
}

.emergency-action-btn {
  background: white;
  border: 2px solid #e2e8f0;
  border-radius: var(--emergency-radius-lg);
  padding: var(--emergency-spacing-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
  box-shadow: var(--emergency-shadow-sm);
}

.emergency-action-btn:hover {
  border-color: var(--emergency-primary);
  background: var(--emergency-bg-primary);
  transform: translateY(-2px);
  box-shadow: var(--emergency-shadow-md);
}

.emergency-action-title {
  font-weight: var(--emergency-font-weight-semibold);
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: var(--emergency-spacing-xs);
}

.emergency-action-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Legacy Support */
.quick-actions {
  margin-bottom: var(--emergency-spacing-xl);
}

.quick-actions h3 {
  color: var(--text-primary);
  font-size: 1.125rem;
  font-weight: var(--emergency-font-weight-semibold);
  margin-bottom: var(--emergency-spacing-md);
  display: flex;
  align-items: center;
  gap: var(--emergency-spacing-sm);
}

.quick-actions h3 svg {
  width: 20px;
  height: 20px;
  color: var(--emergency-primary);
}

.action-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--emergency-spacing-md);
}

.action-btn {
  background: white;
  border: 2px solid #e2e8f0;
  border-radius: var(--emergency-radius-lg);
  padding: var(--emergency-spacing-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
  box-shadow: var(--emergency-shadow-sm);
}

.action-btn:hover {
  border-color: var(--emergency-primary);
  background: var(--emergency-bg-primary);
  transform: translateY(-2px);
  box-shadow: var(--emergency-shadow-md);
}

.action-title {
  font-weight: var(--emergency-font-weight-semibold);
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: var(--emergency-spacing-xs);
}

.action-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Emergency Search */
.emergency-search h3 {
  color: var(--text-primary);
  font-size: 1.125rem;
  font-weight: var(--emergency-font-weight-semibold);
  margin-bottom: var(--emergency-spacing-md);
  display: flex;
  align-items: center;
  gap: var(--emergency-spacing-sm);
}

.emergency-search h3 svg {
  width: 20px;
  height: 20px;
  color: var(--emergency-primary);
}

.search-input-group {
  display: flex;
  gap: var(--emergency-spacing-sm);
}

.search-input-group input {
  flex: 1;
  padding: var(--emergency-spacing-md);
  border: 2px solid #e2e8f0;
  border-radius: var(--emergency-radius-md);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.search-input-group input:focus {
  outline: none;
  border-color: var(--emergency-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* ========================================
   EMERGENCY SETUP MODAL STYLES
   ======================================== */

.setup-content {
  text-align: center;
}

.setup-info {
  margin-bottom: var(--emergency-spacing-xl);
}

.setup-info svg {
  color: var(--emergency-primary);
  margin-bottom: var(--emergency-spacing-md);
}

.setup-info h3 {
  color: var(--text-primary);
  font-size: 1.25rem;
  font-weight: var(--emergency-font-weight-semibold);
  margin-bottom: var(--emergency-spacing-md);
}

.setup-info p {
  color: var(--text-secondary);
  margin-bottom: var(--emergency-spacing-lg);
  line-height: 1.6;
}

.setup-info ul {
  text-align: left;
  max-width: 400px;
  margin: 0 auto;
}

.setup-info li {
  color: var(--text-secondary);
  margin-bottom: var(--emergency-spacing-sm);
  font-size: 0.875rem;
}

.setup-progress {
  margin-bottom: var(--emergency-spacing-xl);
}

.setup-progress h4 {
  color: var(--text-primary);
  font-size: 1.125rem;
  font-weight: var(--emergency-font-weight-semibold);
  margin-bottom: var(--emergency-spacing-md);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: #e2e8f0;
  border-radius: var(--emergency-radius-sm);
  overflow: hidden;
  margin-bottom: var(--emergency-spacing-sm);
}

.progress-fill {
  height: 100%;
  background: var(--emergency-bg-secondary);
  border-radius: var(--emergency-radius-sm);
  transition: width var(--transition-normal);
  width: 0%;
}

.progress-text {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.setup-status {
  text-align: left;
  max-width: 400px;
  margin: 0 auto;
}

.status-item {
  display: flex;
  align-items: center;
  gap: var(--emergency-spacing-sm);
  margin-bottom: var(--emergency-spacing-sm);
  padding: var(--emergency-spacing-sm);
  background: #f8fafc;
  border-radius: var(--emergency-radius-md);
}

.status-icon {
  font-size: 1.25rem;
  min-width: 24px;
}

.status-item span:last-child {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* ========================================
   EMERGENCY MOBILE STYLES
   ======================================== */

@media (max-width: 768px) {
  .emergency-action-grid {
    grid-template-columns: 1fr;
  }
  
  .search-input-group {
    flex-direction: column;
  }
  
  .emergency-indicator {
    flex-direction: column;
    text-align: center;
    gap: var(--emergency-spacing-xs);
  }
  
  .emergency-help-icon-btn {
    margin-left: 0;
    margin-top: var(--emergency-spacing-xs);
  }
  
  .exit-emergency-btn {
    margin-left: 0;
    margin-top: var(--emergency-spacing-xs);
  }
}

/* Vision Modal Styles */
.vision-modal {
  max-width: 90vw;
  max-height: 90vh;
  width: 900px;
}

.vision-modal .modal-body {
  overflow-y: auto;
  max-height: calc(90vh - 100px); /* Account for header */
  position: relative;
}

/* Captured Image Animation */
.captured-image-preview {
  will-change: transform, top, left, width, height;
  backface-visibility: hidden;
}

/* Captured Image Thumbnail in Results */
.captured-image-thumbnail {
  margin-bottom: var(--spacing-lg);
  text-align: center;
  animation: fadeInScale 0.5s ease-out;
}

.captured-image-thumbnail img {
  max-width: 100%;
  max-height: 300px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--bg-tertiary);
  object-fit: contain;
}

@keyframes fadeInScale {
  0% {
    opacity: 0;
    transform: scale(0.95);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* Analysis Loading State */
.analysis-loading {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-secondary);
}

.analysis-loading .loading-spinner {
  margin: 0 auto var(--spacing-md);
}

.vision-tabs {
  display: flex;
  gap: 5px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 10px;
}

.vision-tab {
  padding: 10px 20px;
  border: none;
  background: transparent;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all 0.3s ease;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: -2px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.vision-tab:hover {
  color: var(--primary-color);
  background: var(--background-hover);
  border-radius: 4px 4px 0 0;
}

.vision-tab.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
  background: var(--background-hover);
}

.context-inputs {
  margin: 20px 0;
  padding: 15px;
  background: var(--background-secondary);
  border-radius: 8px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 5px;
  color: var(--text-secondary);
}

.form-group input,
.form-group select {
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--background);
  color: var(--text-primary);
  font-size: 14px;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--primary-color-light);
}

/* File Upload Section */
.file-upload-section {
  margin: var(--spacing-lg) 0;
}

.file-upload-area {
  border: 2px dashed var(--bg-tertiary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-medium);
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.file-upload-area:hover {
  border-color: var(--primary-color);
  background: var(--bg-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.file-upload-area.drag-over {
  border-color: var(--primary-color);
  background: linear-gradient(135deg, rgba(106, 17, 203, 0.1), rgba(37, 117, 252, 0.1));
  border-style: solid;
  transform: scale(1.02);
}

.file-upload-area.uploading {
  pointer-events: none;
  opacity: 0.7;
}

.upload-icon {
  color: var(--primary-color);
  margin: 0 auto var(--spacing-md);
  display: block;
  opacity: 0.7;
  transition: transform var(--transition-medium);
}

.file-upload-area:hover .upload-icon,
.file-upload-area.drag-over .upload-icon {
  transform: translateY(-4px);
  opacity: 1;
}

.upload-text {
  margin: var(--spacing-md) 0;
  color: var(--text-primary);
  font-size: 1rem;
}

.upload-link-btn {
  background: none;
  border: none;
  color: var(--primary-color);
  text-decoration: underline;
  cursor: pointer;
  font-size: inherit;
  font-family: inherit;
  padding: 0;
  margin-left: 4px;
  transition: color var(--transition-fast);
}

.upload-link-btn:hover {
  color: var(--primary-color-dark);
  text-decoration: none;
}

.upload-hint {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: var(--spacing-sm);
}

.file-preview-image {
  max-width: 100%;
  max-height: 300px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  margin: var(--spacing-md) auto;
  display: block;
  animation: fadeInScale 0.4s ease-out;
}

.upload-processing {
  text-align: center;
  color: var(--primary-color);
  font-weight: 600;
  margin-top: var(--spacing-sm);
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes fadeInScale {
  0% {
    opacity: 0;
    transform: scale(0.95);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

.upload-divider {
  text-align: center;
  margin: var(--spacing-lg) 0;
  position: relative;
}

.upload-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--bg-tertiary);
}

.upload-divider span {
  background: var(--bg-primary);
  padding: 0 var(--spacing-md);
  position: relative;
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.camera-section {
  margin: 20px 0;
  text-align: center;
  position: relative;
  transition: opacity 0.3s ease-out;
}

.camera-section video {
  width: 100%;
  max-width: 100%;
  max-height: 300px; /* Limit video height so button stays visible */
  object-fit: contain;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  border: 2px solid var(--bg-tertiary);
  transition: opacity 0.3s ease-out;
}

.modal-header .btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
}

.modal-header .btn svg {
  flex-shrink: 0;
}

.vision-results {
  margin-top: 30px;
  padding: 20px;
  background: var(--background-secondary);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.vision-results h3 {
  margin-top: 0;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.vision-results .error {
  color: #dc2626;
  background-color: #fee2e2;
  border: 1px solid #fecaca;
  padding: 15px;
  border-radius: 6px;
  margin: 10px 0;
}

.vision-results p.error {
  color: #dc2626;
  background-color: #fee2e2;
  border: 1px solid #fecaca;
  padding: 15px;
  border-radius: 6px;
  margin: 10px 0;
}

.analysis-result,
.homework-result {
  background: var(--background);
  padding: 20px;
  border-radius: 8px;
  margin: 15px 0;
}

.assessment-text {
  line-height: 1.6;
  color: var(--text-primary);
  margin-bottom: 15px;
}

.urgency-level {
  padding: 12px 15px;
  border-radius: 6px;
  font-weight: 600;
  margin: 15px 0;
  border: 2px solid;
}

.urgency-level.high {
  background: #fee;
  color: #c00;
  border-color: #fcc;
}

.urgency-level.medium {
  background: #fff3cd;
  color: #856404;
  border-color: #ffeaa7;
}

.urgency-level.low {
  background: #d4edda;
  color: #155724;
  border-color: #c3e6cb;
}

.emergency-alert {
  padding: 15px;
  background: #fff3cd;
  border: 2px solid #ffc107;
  border-radius: 6px;
  margin: 15px 0;
  color: #856404;
  font-weight: 600;
}

.recommendations-list {
  list-style: disc;
  padding-left: 25px;
  line-height: 1.8;
}

.recommendations-list li {
  margin: 8px 0;
  color: var(--text-primary);
}

.warnings {
  padding: 15px;
  background: #f8d7da;
  border: 2px solid #f5c6cb;
  border-radius: 6px;
  margin: 15px 0;
  color: #721c24;
}

.warnings h4 {
  margin-top: 0;
  color: #721c24;
}

.warnings ul {
  margin: 10px 0;
  padding-left: 25px;
}

.disclaimer {
  margin-top: 20px;
  padding: 10px;
  background: var(--background-secondary);
  border-left: 4px solid var(--warning-color);
  border-radius: 4px;
  font-style: italic;
}

.solution-steps {
  background: var(--code-background);
  padding: 15px;
  border-radius: 6px;
  font-family: var(--font-mono);
  white-space: pre-wrap;
  line-height: 1.6;
  color: var(--text-primary);
  margin: 15px 0;
}

.explanation {
  line-height: 1.8;
  color: var(--text-primary);
  margin: 15px 0;
}

.problem-type {
  padding: 10px;
  background: var(--background-secondary);
  border-radius: 6px;
  margin: 15px 0;
  color: var(--text-primary);
}

.tips-list {
  list-style: disc;
  padding-left: 25px;
  line-height: 1.8;
}

.tips-list li {
  margin: 8px 0;
  color: var(--text-primary);
}

.error {
  color: #dc2626;
  padding: 15px;
  background: #fee2e2;
  border-radius: 6px;
  border: 1px solid #fecaca;
}

[data-theme="dark"] .error {
  color: #fca5a5;
  background: #7f1d1d;
  border-color: #991b1b;
}

.loading-spinner {
  border: 3px solid var(--border-color);
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 20px auto;
}

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

.vision-toggle-container {
  display: flex;
  gap: 4px;
  position: relative;
  z-index: 102; /* Above input container */
}

.vision-toggle {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: color 0.2s;
  position: relative;
  z-index: 103; /* Above container */
}

.vision-toggle:hover {
  color: var(--primary-color);
}

/* Vision Chat Actions */
.vision-chat-actions {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--bg-tertiary);
  text-align: center;
}

.send-to-chat-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 0.95rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--primary-color), #16a34a);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-medium);
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.3);
}

.send-to-chat-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(34, 197, 94, 0.4);
  background: linear-gradient(135deg, #22c55e, var(--primary-color));
}

.send-to-chat-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(34, 197, 94, 0.3);
}

/* Solution formatting styles */
.solution-expression {
  margin: var(--spacing-md) 0;
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--primary-color);
}

.solution-expression code {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary-color);
}

.solution-steps-list {
  margin: var(--spacing-md) 0;
}

.solution-steps-list ol {
  margin-left: var(--spacing-lg);
  padding-left: var(--spacing-md);
}

.solution-steps-list li {
  margin: var(--spacing-sm) 0;
  line-height: 1.6;
}

.solution-content {
  margin: var(--spacing-md) 0;
}

.solution-item {
  margin: var(--spacing-sm) 0;
  padding: var(--spacing-sm);
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}

/* Responsive adjustments for vision modal */
@media (max-width: 768px) {
  .vision-modal {
    width: 95vw;
    max-height: 95vh;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .vision-tabs {
    flex-wrap: wrap;
  }
  
  .vision-tab {
    flex: 1;
    min-width: 120px;
  }
}