:root {
  color-scheme: dark light;
  --primary-color: #2196f3;
  --secondary-color: #4b0554;
  --accent-color: #ff9800;
  --error-color: #f44336;
  --background-light: #f5f5f5;
  --background-dark: #1a1a1a;
  --text-light: #333;
  --text-dark: #fff;
  --border-radius: 12px;
  --shadow: 0 1px 3px rgba(58, 2, 49, 0.709);
}

html {
  box-sizing: border-box;
}

*,
*:before,
*:after {
  box-sizing: inherit;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  max-width: clamp(320px, 95%, 1200px);
  margin: auto;
  padding: 1rem;
  line-height: 1.6;
}

header {
  text-align: center;
  /* margin-bottom: 2rem; */
  padding: 2rem;
  background: linear-gradient(180deg, var(--primary-color), #4b0554);
  color: white;
  /* border-radius: var(--border-radius); */
  box-shadow: var(--shadow);
}

header h1 {
  margin: 0 0 0.5rem 0;
  font-size: 2.5rem;
  font-weight: 700;
}

header p {
  margin: 0 0 1rem 0;
  opacity: 0.9;
  font-size: 1.1rem;
}

.status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  margin-top: 1rem;
}

@media (max-width: 600px) {
  .status-bar {
    flex-direction: column;
    gap: 0.5rem;
  }
}

#learning-setup {
  background: white;
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
}

.learning-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

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

.control-group label {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-light);
}

.control-group select {
  padding: 0.75rem;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 1rem;
  background: white;
  transition: border-color 0.2s;
}

.control-group select:focus,
.control-group input:focus {
  outline: none;
  border-color: var(--primary-color);
}

.control-group input[type="text"] {
  padding: 0.75rem;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 1rem;
  background: white;
  transition: border-color 0.2s;
}

#error-message {
  background: #ffebee;
  border: 2px solid var(--error-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin-bottom: 1rem;
  color: #c62828;
}

#error-message h3 {
  margin-top: 0;
  color: var(--error-color);
}

#error-message,
#problematic-area {
  display: none;
}

/* Main interaction area with prompt and stats in one row */
#main-interaction-area {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

#prompt-area {
  background: white;
  border-radius: var(--border-radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.learning-stats {
  background: white;
  border-radius: var(--border-radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

/* Responsive layout for mobile */
@media (max-width: 768px) {
  #main-interaction-area {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .welcome-content {
    width: 95%;
    padding: 1rem;
  }

  .welcome-header h2 {
    font-size: 1.5rem;
  }

  .confirm-content,
  .alert-content {
    width: 95%;
    margin: 1rem;
  }

  .confirm-actions,
  .alert-actions {
    flex-direction: column;
  }

  .confirm-btn,
  .alert-btn {
    width: 100%;
  }
}

.message {
  margin-bottom: 1.5rem;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.student-message {
  background: #e3f2fd;
  border-left: 4px solid var(--primary-color);
}

.tutor-message {
  background: #f1f8e9;
  border-left: 4px solid var(--secondary-color);
}

.tip-message {
  background: #fff3e0;
  border-left: 4px solid var(--accent-color);
  margin: 1rem 0;
}

.message-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  background: rgba(0, 0, 0, 0.05);
  font-size: 0.9rem;
  font-weight: 600;
}

.message-content {
  padding: 1rem;
  line-height: 1.7;
}

.message-content h1,
.message-content h2,
.message-content h3 {
  margin-top: 0;
}

.message-content pre {
  background: #f5f5f5;
  padding: 1rem;
  border-radius: 8px;
  overflow-x: auto;
}

.message-content code {
  background: #f5f5f5;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: 'Monaco', 'Consolas', monospace;
}

.error-message {
  color: var(--error-color);
  background: #ffebee;
  padding: 1rem;
  border-radius: 8px;
  border-left: 4px solid var(--error-color);
}

textarea {
  width: 100%;
  height: 6rem;
  padding: 1rem;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  resize: vertical;
  transition: border-color 0.2s;
}

textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.button-group {
  display: flex;
  justify-content: center;
  margin-top: 1rem;
}

.button-group button {
  padding: 1rem 3rem;
  font-size: 1.2rem;
  font-weight: 700;
  min-width: 200px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
}

.button-group button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(76, 175, 80, 0.4);
}

.button-group button:active {
  transform: translateY(0);
  box-shadow: 0 2px 10px rgba(76, 175, 80, 0.3);
}

.button-group button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
  box-shadow: 0 2px 10px rgba(76, 175, 80, 0.2);
}



#response-area {
  background: white;
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin-top: 1.5rem;
  box-shadow: var(--shadow);
  max-height: 70vh;
  overflow-y: auto;
}

.learning-stats h3 {
  margin-top: 0;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1rem;
}

.stat-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem;
  background: #f8f9fa;
  border-radius: 8px;
}

.stat-label {
  font-weight: 600;
  color: #666;
}

.learning-tools {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
  flex-wrap: wrap;
  align-items: center;
  border-top: 1px solid #525252;
  padding: 1rem;
}

.advanced-options {
  margin-left: auto;
}

.settings {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: #f8f9fa;
  border-radius: 8px;
  margin-top: 0.5rem;
}

.settings input[type="range"] {
  flex: 1;
  min-width: 100px;
}

label {
  margin-bottom: 0.3em;
  font-weight: 600;
  color: var(--text-light);
}

summary {
  cursor: pointer;
  padding: 0.5rem 1rem;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  transition: background-color 0.2s;
}

summary:hover {
  background: #1976d2;
}

button {
  cursor: pointer;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  transition: all 0.2s;
  min-width: 120px;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

[type="submit"],
#submit-button {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(33, 150, 243, 0.3);
}

[type="submit"]:hover,
#submit-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(33, 150, 243, 0.4);
}

#new-lesson-button {
  background: var(--accent-color);
  color: white;
  text-align: center;
  margin: auto;
}

#new-lesson-button:hover {
  background: #f57c00;
}

#help-button {
  background: #2196f3;
  color: white;
}

#help-button:hover {
  background: #1976d2;
}

#save-progress-button {
  background: var(--primary-color);
  color: white;
}

#save-progress-button:hover {
  background: #1976d2;
}

#bookmark-button,
#copy-notes-button,
#create-flashcard-button,
#view-progress-button {
  background: #9c27b0;
  color: white;
  font-size: 0.9rem;
  padding: 0.5rem 1rem;
  min-width: auto;
}

#bookmark-button:hover,
#copy-notes-button:hover,
#create-flashcard-button:hover,
#view-progress-button:hover {
  background: #7b1fa2;
}





#problematic-area {
  background: #ffebee;
  border: 2px solid var(--error-color);
  border-radius: var(--border-radius);
  padding: 1rem;
  margin-top: 1rem;
}

#problem {
  background: white;
  padding: 1rem;
  border-radius: 8px;
  white-space: pre-wrap;
  font-family: monospace;
}

footer {
  text-align: center;
  margin-top: 3rem;
  padding: 2rem;
  color: #666;
  border-top: 1px solid #e0e0e0;
}

footer a {
  color: var(--primary-color);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  body {
    background: var(--background-dark);
    color: var(--text-dark);
  }

  #learning-setup,
  #prompt-area,
  #response-area,
  .learning-stats {
    background: #2d2d2d;
    color: var(--text-dark);
  }

  span.form-heading {
    color: #FFF;
    margin-bottom: 10px;
  }

  .control-group select,
  textarea {
    background: #3d3d3d;
    color: var(--text-dark);
    border-color: #555;
  }

  .student-message {
    background: #1a237e;
  }

  .tutor-message {
    background: #1b5e20;
  }

  .tip-message {
    background: #e65100;
  }

  .stat-item,
  .settings {
    background: #3d3d3d;
  }
}

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

.modal-content {
  background-color: white;
  margin: 5% auto;
  padding: 2rem;
  border-radius: var(--border-radius);
  width: 90%;
  max-width: 800px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-50px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.close {
  color: #aaa;
  float: right;
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
  line-height: 1;
}

.close:hover,
.close:focus {
  color: var(--error-color);
}

.progress-section {
  margin-bottom: 2rem;
}

.progress-section h3 {
  color: var(--primary-color);
  border-bottom: 2px solid #e0e0e0;
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

.progress-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.progress-stat-card {
  background: #f8f9fa;
  padding: 1rem;
  border-radius: 8px;
  text-align: center;
  border-left: 4px solid var(--primary-color);
}

.progress-stat-value {
  font-size: 2rem;
  font-weight: bold;
  color: var(--primary-color);
  display: block;
}

.progress-stat-label {
  font-size: 0.9rem;
  color: #666;
  margin-top: 0.5rem;
}

.flashcard-item,
.bookmark-item {
  background: white;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.flashcard-front,
.flashcard-back {
  margin-bottom: 0.5rem;
}

.flashcard-front strong,
.bookmark-item strong {
  color: var(--primary-color);
}

.item-meta {
  font-size: 0.8rem;
  color: #666;
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid #f0f0f0;
}

.empty-state {
  text-align: center;
  color: #666;
  font-style: italic;
  padding: 2rem;
}

/* Enhanced message styling */
.message-content blockquote {
  border-left: 4px solid var(--primary-color);
  margin: 1rem 0;
  padding: 0.5rem 1rem;
  background: rgba(33, 150, 243, 0.1);
  border-radius: 0 8px 8px 0;
}

.message-content ul,
.message-content ol {
  padding-left: 1.5rem;
}

.message-content li {
  margin-bottom: 0.5rem;
}

.message-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}

.message-content th,
.message-content td {
  border: 1px solid #ddd;
  padding: 0.5rem;
  text-align: left;
}

.message-content th {
  background: #f8f9fa;
  font-weight: 600;
}

/* Responsive improvements */
@media (max-width: 768px) {
  .learning-controls {
    grid-template-columns: 1fr;
  }

  .button-group {
    flex-direction: column;
  }

  .button-group button {
    width: 100%;
  }



  .modal-content {
    margin: 10% auto;
    width: 95%;
    padding: 1rem;
  }

  .progress-stats {
    grid-template-columns: 1fr;
  }
}

/* Dark mode enhancements */
@media (prefers-color-scheme: dark) {
  .modal-content {
    background: #2d2d2d;
    color: var(--text-dark);
  }

  .control-group input[type="text"],
  .control-group select {
    background: #3d3d3d;
    color: var(--text-dark);
    border-color: #555;
  }



  .progress-stat-card,
  .flashcard-item,
  .bookmark-item {
    background: #3d3d3d;
    border-color: #555;
    color: var(--text-dark);
  }

  .message-content blockquote {
    background: rgba(33, 150, 243, 0.2);
  }

  .message-content th {
    background: #3d3d3d;
  }

  .message-content th,
  .message-content td {
    border-color: #555;
  }
}

/* Enha
nced Focus Management */
*:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Welcome Modal Styles */
.welcome-modal {
  display: none;
  align-items: center;
  justify-content: center;
}

.welcome-content {
  max-width: 600px;
  width: 90%;
  text-align: left;
}

.welcome-header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.welcome-header h2 {
  color: var(--primary-color);
  font-size: 2rem;
  margin: 0;
}

.welcome-body h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.welcome-body ul {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
}

.welcome-body li {
  padding: 0.75rem 0;
  border-bottom: 1px solid #f0f0f0;
}

.welcome-body li:last-child {
  border-bottom: none;
}

.welcome-body p {
  text-align: center;
  font-style: italic;
  color: #666;
  margin: 1.5rem 0;
}

.welcome-actions {
  text-align: center;
  margin-top: 2rem;
}

.welcome-btn {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border: none;
  padding: 1rem 2rem;
  border-radius: var(--border-radius);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(33, 150, 243, 0.3);
}

.welcome-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(33, 150, 243, 0.4);
}

/* Conversation Section */
#conversation-section {
  margin-top: 2rem;
}

#conversation-section h2 {
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 1.5rem;
  font-size: 1.8rem;
}

/* Confirmation Modal Styles */
.confirm-modal,
.alert-modal {
  display: none;
  align-items: center;
  justify-content: center;
}

.confirm-content,
.alert-content {
  max-width: 500px;
  width: 90%;
  text-align: center;
  background: white;
  border-radius: var(--border-radius);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}



.confirm-header,
.alert-header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  padding: 1.5rem;
  margin: 0;
  text-align: center;
}

.confirm-header h3,
.alert-header h3 {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 600;
}

.confirm-body,
.alert-body {
  padding: 2rem 1.5rem;
}

.confirm-body p,
.alert-body p {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--text-light);
}

.confirm-actions,
.alert-actions {
  padding: 1rem 1.5rem 1.5rem;
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.confirm-btn,
.alert-btn {
  padding: 0.75rem 2rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  min-width: 100px;
}



.cancel-btn {
  background: #6c757d;
  color: white;
}

.cancel-btn:hover {
  background: #5a6268;
  transform: translateY(-1px);
}

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

.ok-btn:hover {
  background: #1976d2;
  transform: translateY(-1px);
}

.alert-btn.ok-btn {
  background: var(--secondary-color);
}

.alert-btn.ok-btn:hover {
  background: #388e3c;
}

/* Animation for modals */
.confirm-modal.show,
.alert-modal.show {
  display: flex !important;
  animation: modalFadeIn 0.3s ease-out;
}

/* Ensure welcome modal shows when display is set to flex */
.welcome-modal[style*="flex"] {
  display: flex !important;
}

/* Welcome modal show class */
.welcome-modal.show {
  display: flex !important;
  animation: modalFadeIn 0.3s ease-out;
}

.confirm-content,
.alert-content {
  animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-50px) scale(0.9);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Print Styles */
@media print {
  .main-header {
    background: white !important;
    color: black !important;
    box-shadow: none !important;
  }

  .status-bar {
    background: #f0f0f0 !important;
    color: black !important;
  }

  .welcome-modal,
  .confirm-modal,
  .alert-modal {
    display: none !important;
  }
}

/ * Main Screen Styles */ #main-screen {
  margin: 2rem 0;
}

.main-options h2 {
  text-align: center;
  color: var(--primary-color);
  margin-bottom: 2rem;
  font-size: 2rem;
}

.option-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.option-card {
  background: white;
  border-radius: var(--border-radius);
  padding: 2rem;
  text-align: center;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.option-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  border-color: var(--primary-color);
}

.card-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.option-card h3 {
  color: #FFFFFF;
  margin: 1rem 0;
  font-size: 1.5rem;
}

.option-card p {
  color: #666;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.option-btn {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border: none;
  padding: 1rem 2rem;
  border-radius: var(--border-radius);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(33, 150, 243, 0.3);
  width: 100%;
}

.option-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(33, 150, 243, 0.4);
}

/* Panel Styles */
.app-panel {
  /* margin: 2rem 0; */
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding: 1rem;
  background-color: #4b0554;
  /* background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)); */
  color: white;
  /* border-radius: var(--border-radius); */
}

.panel-header h2 {
  margin: 0;
  font-size: 1.8rem;
  display: flex;
  text-align: center;
  align-items: center;
  gap: 15px;
}


.back-btn,
.help-btn {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
}

h1#back-to-home {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
}

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

/* Summarizer Specific Styles */
.summarizer-controls,
.writer-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: #f8f9fa;
  border-radius: var(--border-radius);
}

.summarizer-input,
.writer-input {
  margin-bottom: 2rem;
}

.summarizer-input textarea,
.writer-input textarea {
  min-height: 200px;
  resize: vertical;
}

#summary-section,
#writing-section {
  margin-top: 2rem;
}

#summary-area,
#writing-area {
  background: white;
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
  min-height: 200px;
  border-left: 4px solid var(--primary-color);
}

.summary-tools,
.writing-tools {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 1rem;
}

.summary-tools button,
.writing-tools button {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
}

.summary-tools button:hover,
.writing-tools button:hover {
  background: var(--secondary-color);
  transform: translateY(-2px);
}

/* Dark mode support for new elements */
@media (prefers-color-scheme: dark) {
  .option-card {
    background: #2d2d2d;
    color: var(--text-dark);
  }

  .option-card p {
    color: #ccc;
  }

  .summarizer-controls,
  .writer-controls {
    background: #333;
  }

  #summary-area,
  #writing-area {
    background: #2d2d2d;
    color: var(--text-dark);
  }
}

/* Responsive design for mobile */
@media (max-width: 768px) {
  .option-cards {
    grid-template-columns: 1fr;
  }

  .panel-header {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .panel-header h2 {
    order: -1;
  }

  .summarizer-controls,
  .writer-controls {
    grid-template-columns: 1fr;
  }

  .summary-tools,
  .writing-tools {
    flex-direction: column;
  }
}

/* 
Message Styles for Tutor Panel */
.message {
  margin: 1rem 0;
  padding: 1rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
}

.student-message {
  background: #e3f2fd;
  border-left: 4px solid var(--primary-color);
  margin-left: 2rem;
}

.tutor-message {
  background: #f1f8e9;
  border-left: 4px solid var(--secondary-color);
  margin-right: 2rem;
}

.message-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  opacity: 0.8;
}

.message-role {
  font-weight: 600;
}

.message-time {
  font-size: 0.8rem;
}

.message-content {
  line-height: 1.6;
}

.message-content h1,
.message-content h2,
.message-content h3 {
  color: var(--primary-color);
  margin: 1rem 0 0.5rem 0;
}

.message-content ul,
.message-content ol {
  margin: 0.5rem 0;
  padding-left: 1.5rem;
}

.message-content code {
  background: #f5f5f5;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: 'Courier New', monospace;
}

.message-content pre {
  background: #f5f5f5;
  padding: 1rem;
  border-radius: var(--border-radius);
  overflow-x: auto;
  margin: 1rem 0;
}

.error-message {
  color: var(--error-color);
  background: #ffebee;
  padding: 1rem;
  border-radius: var(--border-radius);
  border-left: 4px solid var(--error-color);
}

/* Dark mode for messages */
@media (prefers-color-scheme: dark) {
  .student-message {
    background: #1e3a8a;
    color: white;
  }

  .tutor-message {
    background: #1b5e20;
    color: white;
  }

  .message-content code {
    background: #333;
    color: #fff;
  }

  .message-content pre {
    background: #333;
    color: #fff;
  }

  .error-message {
    background: #4a0e0e;
    color: #ffcdd2;
  }
}

/* Learning controls styling */
.learning-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: #f8f9fa;
  border-radius: var(--border-radius);
}

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

.control-group label {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.control-group select,
.control-group input {
  padding: 0.75rem;
  border: 2px solid #e0e0e0;
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.control-group select:focus,
.control-group input:focus {
  outline: none;
  border-color: var(--primary-color);
}

/* Learning stats styling */
.learning-stats {
  background: white;
  padding: 1.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
}

.learning-stats h3 {
  color: var(--primary-color);
  margin: 0 0 1rem 0;
  text-align: center;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
}

.stat-item {
  text-align: center;
  padding: 0.5rem;
}

.stat-label {
  display: block;
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 0.25rem;
}

.stat-item span:last-child {
  font-weight: 600;
  color: var(--primary-color);
  font-size: 1.1rem;
}

/* Advanced options styling */
.advanced-options {
  margin-top: 1rem;
}

.advanced-options summary {
  cursor: pointer;
  padding: 0.5rem;
  background: #f0f0f0;
  border-radius: var(--border-radius);
  font-weight: 600;
}

.settings {
  padding: 1rem;
  background: #f8f9fa;
  border-radius: var(--border-radius);
  margin-top: 0.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  align-items: center;
}

.settings label {
  font-weight: 600;
  color: var(--primary-color);
}

.settings input,
.settings select {
  padding: 0.5rem;
  border: 2px solid #e0e0e0;
  border-radius: var(--border-radius);
}

/* API Status and Progress Styles */
.api-status {
  background: #f8f9fa;
  border: 2px solid var(--primary-color);
  border-radius: var(--border-radius);
  padding: 1rem;
  margin-bottom: 1rem;
  text-align: center;
}

.status-message {
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: #e0e0e0;
  border-radius: 4px;
  overflow: hidden;
  margin: 0.5rem 0;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  width: 0%;
  transition: width 0.3s ease;
}

.progress-text {
  font-size: 0.9rem;
  color: #666;
  font-weight: 500;
}

/* Dark mode for controls */
@media (prefers-color-scheme: dark) {

  .learning-controls,
  .summarizer-controls,
  .writer-controls {
    background: #333;
  }

  .learning-stats {
    background: #2d2d2d;
    color: var(--text-dark);
  }

  .control-group select,
  .control-group input,
  .settings input,
  .settings select {
    background: #444;
    color: white;
    border-color: #555;
  }

  .advanced-options summary {
    background: #444;
    color: white;
  }

  .settings {
    background: #333;
  }

  .api-status {
    background: #333;
    color: var(--text-dark);
  }

  .progress-bar {
    background: #555;
  }

  .progress-text {
    color: #ccc;
  }
}

/* Heade
r buttons group styling */
.header-buttons {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Advanced options in header */
.panel-header .advanced-options {
  margin: 0;
}

.panel-header .advanced-options summary {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
  font-size: 0.9rem;
}

.panel-header .advanced-options summary:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

.panel-header .advanced-options[open] summary {
  background: rgba(255, 255, 255, 0.3);
}

.panel-header .settings {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 0.5rem;
  background: white;
  color: #333;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  z-index: 1000;
  min-width: 300px;
  padding: 1rem;
}

.panel-header .advanced-options {
  position: relative;
}

/* Responsive header for mobile */
@media (max-width: 768px) {
  .panel-header {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .panel-header h2 {
    order: -1;
  }

  .header-buttons {
    justify-content: center;
  }

  .panel-header .settings {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    right: auto;
    width: 90%;
    max-width: 400px;
  }
}

/* Dark mode for header settings */
@media (prefers-color-scheme: dark) {
  .panel-header .settings {
    background: #2d2d2d;
    color: var(--text-dark);
  }

  .panel-header .settings input,
  .panel-header .settings select {
    background: #444;
    color: white;
    border-color: #555;
  }
}

/* Lo
ading Spinner Styles */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 1s ease-in-out infinite;
  margin-right: 0.5rem;
}

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

/* Button loading state */
button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

button:disabled:hover {
  transform: none;
  box-shadow: none;
}

/* Prevent button text selection during loading */
button[disabled] {
  user-select: none;
  pointer-events: none;
}

button[disabled]:not(:hover) {
  transform: none;
}

/* Dark mode spinner */
@media (prefers-color-scheme: dark) {
  .spinner {
    border-color: rgba(255, 255, 255, 0.2);
    border-top-color: rgba(255, 255, 255, 0.8);
  }
}

/* Loading state for different button types */
.option-btn:disabled .spinner {
  border-color: rgba(255, 255, 255, 0.3);
  border-top-color: white;
}

.back-btn:disabled .spinner,
.help-btn:disabled .spinner {
  border-color: rgba(255, 255, 255, 0.3);
  border-top-color: white;
}

/* Ensure spinner is visible in all button contexts */
button .spinner {
  vertical-align: middle;
}