/* ========================================
   💬 Chat Interface Components
   ======================================== */

.chat-interface {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: var(--background-color);
}

.chat-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
  padding: var(--spacing-lg);
}

.chat-history {
  flex: 1;
  overflow-y: auto;
  margin-bottom: var(--spacing-lg);
  scroll-behavior: smooth;
}

/* ========================================
   💭 Message Styles
   ======================================== */

.message {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  opacity: 0;
  transform: translateY(10px);
  animation: messageAppear 0.5s ease forwards;
}

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

.message-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.message-content {
  flex: 1;
  min-width: 0;
}

/* User Messages */
.user-message {
  flex-direction: row-reverse;
}

.user-message .message-avatar {
  background-color: var(--primary-color);
  color: white;
}

.user-message .message-content {
  background-color: var(--primary-color);
  color: white;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-lg) var(--radius-lg) var(--radius-sm) var(--radius-lg);
  max-width: 70%;
  margin-left: auto;
  box-shadow: var(--shadow-light);
}

/* Assistant Messages */
.assistant-message .message-avatar {
  background-color: var(--secondary-color);
  color: white;
}

.assistant-message .message-content {
  background-color: var(--surface-color);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-lg) var(--radius-lg) var(--radius-lg) var(--radius-sm);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-light);
}

/* Welcome Message */
.welcome-message .message-content {
  background: linear-gradient(135deg, var(--surface-color) 0%, #f8f9fa 100%);
  border: 2px solid var(--secondary-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
}

.welcome-message h3 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
  font-size: 1.25rem;
}

.welcome-message p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

/* ========================================
   🎯 Quick Actions
   ======================================== */

.quick-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.quick-action {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--surface-color);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
  font-weight: 500;
}

.quick-action:hover {
  border-color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.action-icon {
  font-size: 1.25rem;
  opacity: 0.8;
}

.action-text {
  color: var(--text-primary);
}

/* ========================================
   ⌨️ Chat Input
   ======================================== */

.chat-input-container {
  background-color: var(--surface-color);
  border-radius: var(--radius-xl);
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow-medium);
  transition: border-color var(--transition-fast);
}

.chat-input-container:focus-within {
  border-color: var(--secondary-color);
}

.chat-input-wrapper {
  display: flex;
  align-items: flex-end;
  padding: var(--spacing-md);
}

.chat-input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.5;
  resize: none;
  max-height: 150px;
  min-height: 24px;
  padding: var(--spacing-sm) 0;
}

.chat-input::placeholder {
  color: var(--text-secondary);
}

.input-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-left: var(--spacing-md);
}

.input-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.input-btn:hover {
  background-color: var(--border-color);
}

.send-btn {
  background-color: var(--secondary-color);
  color: white;
  width: 36px;
  height: 36px;
  border-radius: 50%;
}

.send-btn:hover {
  background-color: var(--accent-color);
  transform: scale(1.05);
}

.send-btn:disabled {
  background-color: var(--border-color);
  cursor: not-allowed;
  transform: none;
}

.input-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border-top: 1px solid var(--border-color);
  background-color: rgba(0, 0, 0, 0.02);
}

.input-hint {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* ========================================
   ⏳ Typing Indicator
   ======================================== */

.typing-indicator {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.typing-dots {
  display: flex;
  gap: 2px;
}

.typing-dots span {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--text-secondary);
  animation: typingBounce 1.4s ease-in-out infinite both;
}

.typing-dots span:nth-child(1) { animation-delay: -0.32s; }
.typing-dots span:nth-child(2) { animation-delay: -0.16s; }
.typing-dots span:nth-child(3) { animation-delay: 0s; }

@keyframes typingBounce {
  0%, 80%, 100% { transform: scale(0.8); opacity: 0.5; }
  40% { transform: scale(1); opacity: 1; }
}

/* ========================================
   🔧 Tool Container
   ======================================== */

.tool-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--surface-color);
  overflow: hidden;
}

.tool-header {
  display: none;
}

.tool-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.tool-icon {
  font-size: 2rem;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--border-color);
  border-radius: var(--radius-md);
}

.tool-details h2 {
  font-size: 1.25rem;
  margin-bottom: 0.25rem;
}

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

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

.tool-btn {
  background-color: var(--border-color);
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}

.tool-btn:hover {
  background-color: var(--secondary-color);
  color: white;
}

.tool-iframe-container {
  flex: 1;
  position: relative;
  overflow: hidden;
}

#toolIframe {
  width: 100%;
  height: 100%;
  border: none;
}

.tool-loading {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--surface-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  transition: opacity var(--transition-medium);
}

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

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

/* ========================================
   📝 Modal Styles
   ======================================== */

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-medium);
}

.modal:not(.hidden) {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background-color: var(--surface-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-heavy);
  max-width: 500px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  transform: scale(0.9) translateY(20px);
  transition: transform var(--transition-medium);
}

.modal:not(.hidden) .modal-content {
  transform: scale(1) translateY(0);
}

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

.modal-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--border-color);
}

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

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

/* ========================================
   🎛️ Settings Form
   ======================================== */

.setting-group {
  margin-bottom: var(--spacing-xl);
}

.setting-group h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

.setting-item {
  margin-bottom: var(--spacing-lg);
}

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

.setting-item input {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--background-color);
  font-size: 0.875rem;
  transition: border-color var(--transition-fast);
}

.setting-item input:focus {
  border-color: var(--secondary-color);
}

/* ========================================
   🎨 Buttons
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

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

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

.btn-secondary {
  background-color: var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: var(--text-secondary);
  color: white;
}

/* ========================================
   🍎 Apple Overseer Components
   ======================================== */

/* Overseer Button in Header */
.overseer-btn {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
}

.overseer-icon {
  font-size: 1.25rem;
}

.overseer-status-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--background-color);
  transition: background-color 0.3s ease;
}

.overseer-status-badge.healthy {
  background-color: #10b981;
}

.overseer-status-badge.warning {
  background-color: #f59e0b;
}

.overseer-status-badge.critical {
  background-color: #ef4444;
}

/* Overseer Panel */
.overseer-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 420px;
  height: 100vh;
  background-color: var(--surface-color);
  border-left: 1px solid var(--border-color);
  box-shadow: var(--shadow-heavy);
  z-index: 1100;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.overseer-panel:not(.hidden) {
  transform: translateX(0);
}

/* Overseer Panel Header */
.overseer-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  background-color: var(--background-color);
}

.overseer-panel-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.overseer-panel-title h3 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
}

.overseer-health-badge {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.overseer-health-badge.healthy {
  background-color: #d1fae5;
  color: #065f46;
}

.overseer-health-badge.warning {
  background-color: #fef3c7;
  color: #92400e;
}

.overseer-health-badge.critical {
  background-color: #fee2e2;
  color: #991b1b;
}

.overseer-panel-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 4px;
  line-height: 1;
  transition: color 0.2s ease;
}

.overseer-panel-close:hover {
  color: var(--text-primary);
}

/* Overseer Panel Body */
.overseer-panel-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-lg);
}

.overseer-section {
  margin-bottom: var(--spacing-xl);
}

.overseer-section h4 {
  margin: 0 0 var(--spacing-md) 0;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
}

/* Overseer Stats */
.overseer-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.overseer-stat {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-md);
  background-color: var(--background-color);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.overseer-stat .stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.overseer-stat .stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Operations List */
.overseer-operations-list,
.overseer-alerts-list,
.overseer-recommendations-list,
.overseer-history-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.overseer-operation-item,
.overseer-alert-item,
.overseer-recommendation-item,
.overseer-history-item {
  padding: var(--spacing-md);
  background-color: var(--background-color);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  font-size: 0.875rem;
}

.overseer-operation-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.operation-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.operation-id {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.8rem;
}

.operation-status {
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
}

.operation-status.active {
  background-color: #dbeafe;
  color: #1e40af;
}

.operation-status.completed {
  background-color: #d1fae5;
  color: #065f46;
}

.operation-status.failed {
  background-color: #fee2e2;
  color: #991b1b;
}

.operation-details {
  color: var(--text-secondary);
  font-size: 0.75rem;
}

.operation-tool {
  font-weight: 500;
  color: var(--primary-color);
}

/* Alerts */
.overseer-alert-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.alert-icon {
  flex-shrink: 0;
  font-size: 1.25rem;
}

.alert-icon.warning {
  color: #f59e0b;
}

.alert-icon.critical {
  color: #ef4444;
}

.alert-content {
  flex: 1;
}

.alert-message {
  color: var(--text-primary);
  font-size: 0.875rem;
  margin: 0;
}

/* Recommendations */
.overseer-recommendation-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.recommendation-icon {
  flex-shrink: 0;
  font-size: 1.25rem;
}

.recommendation-content {
  flex: 1;
}

.recommendation-type {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.recommendation-message {
  color: var(--text-primary);
  font-size: 0.875rem;
  margin: 0;
}

.recommendation-priority {
  display: inline-block;
  margin-top: 4px;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 600;
}

.recommendation-priority.high {
  background-color: #fee2e2;
  color: #991b1b;
}

.recommendation-priority.medium {
  background-color: #fef3c7;
  color: #92400e;
}

.recommendation-priority.low {
  background-color: #dbeafe;
  color: #1e40af;
}

/* History Items */
.overseer-history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.history-operation {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.history-id {
  font-weight: 500;
  font-size: 0.8rem;
  color: var(--text-primary);
}

.history-details {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.history-duration {
  font-size: 0.75rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

/* Empty State */
.overseer-empty {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.875rem;
  padding: var(--spacing-lg);
  font-style: italic;
}

/* Overseer Panel Footer */
.overseer-panel-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: var(--spacing-sm);
  background-color: var(--background-color);
}

.overseer-panel-footer .btn {
  flex: 1;
  font-size: 0.875rem;
  padding: var(--spacing-sm) var(--spacing-md);
}

/* Quality Rating Badge */
.quality-rating {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  margin-left: 8px;
}

.quality-rating.excellent {
  background-color: #d1fae5;
  color: #065f46;
}

.quality-rating.good {
  background-color: #dbeafe;
  color: #1e40af;
}

.quality-rating.fair {
  background-color: #fef3c7;
  color: #92400e;
}

.quality-rating.poor {
  background-color: #fee2e2;
  color: #991b1b;
}

/* ========================================
   📱 Mobile Responsiveness
   ======================================== */

@media (max-width: 768px) {
  .chat-container {
    padding: var(--spacing-md);
  }
  
  .message {
    margin-bottom: var(--spacing-md);
  }
  
  .user-message .message-content {
    max-width: 85%;
  }
  
  .quick-actions {
    grid-template-columns: 1fr;
  }
  
  .tool-header {
    padding: var(--spacing-md);
  }
  
  .tool-actions {
    flex-wrap: wrap;
  }
  
  .tool-btn {
    padding: var(--spacing-sm);
    font-size: 0.75rem;
  }
  
  .modal-content {
    width: 95%;
  }
  
  .modal-header,
  .modal-body,
  .modal-footer {
    padding: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .quick-action {
    padding: var(--spacing-md);
  }
  
  .action-icon {
    font-size: 1rem;
  }
  
  .action-text {
    font-size: 0.875rem;
  }
  
  .chat-input-wrapper {
    padding: var(--spacing-sm);
  }
  
  .input-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }

  /* Overseer Panel Mobile */
  .overseer-panel {
    width: 100%;
  }

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

  .overseer-panel-footer {
    flex-direction: column;
  }

  .overseer-panel-footer .btn {
    width: 100%;
  }
}

/* ========================================
   📋 Inventory Browse Table
   ======================================== */

.inventory-browse-container {
  width: 100%;
  margin-top: var(--spacing-sm);
}

.inventory-browse-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}

.inventory-browse-header h4 {
  margin: 0;
  font-size: 1rem;
  color: var(--text-color);
}

.inventory-browse-filter {
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 0.875rem;
  background: var(--background-color);
  color: var(--text-color);
  min-width: 180px;
}

.inventory-browse-filter:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(46, 125, 50, 0.2);
}

.inventory-browse-table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
}

.inventory-browse-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  white-space: nowrap;
}

.inventory-browse-table thead {
  position: sticky;
  top: 0;
  z-index: 1;
}

.inventory-browse-table th {
  background-color: var(--primary-color, #2e7d32);
  color: #fff;
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.15s;
}

.inventory-browse-table th:hover {
  background-color: #1b5e20;
}

.inventory-browse-table th .sort-indicator {
  font-size: 0.75rem;
}

.inventory-browse-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  color: var(--text-color);
}

.inventory-browse-table tbody tr:hover {
  background-color: rgba(46, 125, 50, 0.05);
}

.inventory-browse-table tbody tr.low-stock {
  background-color: rgba(255, 183, 77, 0.2);
}

.inventory-browse-table tbody tr.low-stock:hover {
  background-color: rgba(255, 183, 77, 0.35);
}

.inventory-browse-table tbody tr.critical-stock {
  background-color: rgba(229, 57, 53, 0.15);
}

.inventory-browse-table tbody tr.critical-stock:hover {
  background-color: rgba(229, 57, 53, 0.25);
}

/* Dark mode */
[data-theme="dark"] .inventory-browse-table th {
  background-color: #1b5e20;
}

[data-theme="dark"] .inventory-browse-table th:hover {
  background-color: #2e7d32;
}

[data-theme="dark"] .inventory-browse-table tbody tr:hover {
  background-color: rgba(46, 125, 50, 0.15);
}

[data-theme="dark"] .inventory-browse-table tbody tr.low-stock {
  background-color: rgba(255, 183, 77, 0.15);
}

[data-theme="dark"] .inventory-browse-table tbody tr.critical-stock {
  background-color: rgba(229, 57, 53, 0.2);
}

[data-theme="dark"] .inventory-browse-filter {
  background: var(--surface-color);
  border-color: var(--border-color);
}

/* Mobile responsive */
@media (max-width: 768px) {
  .inventory-browse-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .inventory-browse-filter {
    width: 100%;
  }

  .inventory-browse-table {
    font-size: 0.8rem;
  }

  .inventory-browse-table th,
  .inventory-browse-table td {
    padding: var(--spacing-xs) var(--spacing-sm);
  }
}

/* ========================================
   Mobile Sidebar Overlay
   ======================================== */

@media (max-width: 768px) {
  .sidebar,
  [class*="sidebar"] {
    position: fixed !important;
    z-index: 1000;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }

  .sidebar.open,
  [class*="sidebar"].open,
  .sidebar-open .sidebar {
    transform: translateX(0);
  }

  .sidebar-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
  }

  .sidebar-open .sidebar-backdrop {
    opacity: 1;
    pointer-events: auto;
  }

  .tools-grid,
  .tool-cards,
  [class*="grid"] {
    grid-template-columns: 1fr !important;
    gap: 16px;
  }

  .stats-grid,
  .stats-container {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 12px;
  }

  .chat-panel,
  .chat-container {
    width: 100% !important;
    max-width: none !important;
  }

  .settings-modal .modal-content,
  .modal .modal-content {
    width: 95% !important;
    max-width: none !important;
    margin: 10px auto;
    max-height: 90vh;
    overflow-y: auto;
  }
}

@media (max-width: 480px) {
  .stats-grid,
  .stats-container {
    grid-template-columns: 1fr !important;
  }

  .tool-card h3 {
    font-size: 16px;
  }

  .tool-card p {
    font-size: 14px;
  }
}

/* ========================================
   Loading State + Skeleton Animation
   ======================================== */

.loading-timeout {
  color: #999;
  font-size: 14px;
  padding: 20px;
  text-align: center;
}

.loading-timeout button {
  margin-top: 12px;
  padding: 8px 16px;
  background: #4a90d9;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s;
}

.loading-timeout button:hover {
  background: #357abd;
}

@keyframes skeleton-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.skeleton,
.loading-skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-pulse 1.5s ease-in-out infinite;
  border-radius: 4px;
}

/* ========================================
   Unconfigured Tool State
   ======================================== */

.tool-unconfigured {
  padding: 40px;
  text-align: center;
  font-family: system-ui, -apple-system, sans-serif;
}

.tool-unconfigured h2 {
  color: #666;
  margin-bottom: 16px;
  font-weight: 500;
}

.tool-unconfigured p {
  color: #888;
  margin-bottom: 24px;
}

.tool-unconfigured .setup-steps {
  background: #f5f5f5;
  padding: 16px;
  border-radius: 8px;
  text-align: left;
  max-width: 400px;
  margin: 0 auto;
}

.tool-unconfigured .setup-steps ol {
  margin: 12px 0;
  padding-left: 20px;
  color: #666;
}

.tool-unconfigured .setup-steps li {
  margin: 8px 0;
}

/* ========================================
   Empty State
   ======================================== */

.empty-state {
  color: #999;
  font-style: italic;
  padding: 20px;
  text-align: center;
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state-message {
  font-size: 16px;
  margin-bottom: 8px;
}

.empty-state-hint {
  font-size: 14px;
  color: #bbb;
}

/* ========================================
   Stats Placeholder State
   ======================================== */

.stat-placeholder {
  opacity: 0.5;
  cursor: help;
}

.stat-placeholder::after {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background: #ddd;
  border-radius: 50%;
  margin-left: 8px;
  vertical-align: middle;
}

/* ========================================
   Chat Layout — fill viewport, scroll internally
   ======================================== */

.main-content:has(.chat-interface:not(.hidden)) {
  overflow: hidden !important;
}

.chat-interface {
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.chat-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.chat-history {
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}

.chat-input-container {
  flex-shrink: 0;
}

/* ========================================
   Chat Input Text Color (dark theme)
   ======================================== */

.chat-input {
  color: #ffffff !important;
}

.chat-input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}