/* ===================================================================
   Studio AI Chat Sidebar Styles
   =================================================================== */

/* --- Toggle Button --- */
.studio-chat-toggle {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10000;
  background: #0075b4;
  color: #fff;
  border: none;
  border-radius: 8px 0 0 8px;
  padding: 12px 8px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  box-shadow: -2px 0 8px rgba(0, 0, 0, 0.15);
  transition: background 0.2s, padding 0.2s;
}

.studio-chat-toggle:hover {
  background: #005a8c;
  padding-right: 12px;
}

.studio-chat-toggle-label {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

/* Hide toggle when sidebar is open */
body.studio-chat-open .studio-chat-toggle {
  display: none;
}

/* --- Sidebar Panel --- */
.studio-chat-sidebar {
  position: fixed;
  top: 0;
  right: -34vw;
  width: 33vw;
  min-width: 360px;
  height: 100vh;
  max-height: 100vh;
  background: #fff;
  border-left: 1px solid #d1d5db;
  box-shadow: -4px 0 16px rgba(0, 0, 0, 0.1);
  z-index: 10001;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: right 0.3s ease;
}

body.studio-chat-open .studio-chat-sidebar {
  right: 0;
}

/* Push main content when sidebar is open */
body.studio-chat-open .wrapper-view {
  margin-right: 33vw;
  transition: margin-right 0.3s ease;
}

/* --- Header --- */
.studio-chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid #e5e7eb;
  /* background: #f9fafb; */
  flex-shrink: 0;
}

.studio-chat-title {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: #1f2937;
}

.studio-chat-header-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* --- Settings Panel --- */
.studio-chat-settings {
  flex: 1 1 0%;
  overflow: visible;
  display: flex;
  flex-direction: column;
}

.studio-chat-settings-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid #e5e7eb;
  background: #f9fafb;
}

.studio-chat-settings-header h4 {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: #1f2937;
}

.studio-chat-settings-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.studio-chat-label-row {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 4px;
}

.studio-chat-label-row label {
  margin-bottom: 0;
}

.studio-chat-settings-field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: #374151;
  margin-bottom: 4px;
}

.studio-chat-help-icon {
  position: relative;
  display: inline-flex;
  align-items: center;
  color: #9ca3af;
  cursor: help;
}

.studio-chat-help-icon:hover {
  color: #6b7280;
}

.studio-chat-help-icon::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 0;
  top: calc(100% + 6px);
  background: #1f2937;
  color: #fff;
  font-size: 11px;
  font-weight: 400;
  line-height: 1.4;
  padding: 6px 10px;
  border-radius: 6px;
  white-space: normal;
  width: 220px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
  z-index: 100;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.studio-chat-help-icon:hover::after {
  opacity: 1;
}

.studio-chat-settings-field select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 13px;
  color: #374151;
  background: #fff;
  cursor: pointer;
  box-sizing: border-box;
}

.studio-chat-settings-field select:focus {
  outline: none;
  border-color: #0075b4;
  box-shadow: 0 0 0 2px rgba(0, 117, 180, 0.15);
}

/* --- Toggle Switch --- */
.studio-chat-toggle-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0px 8px 0px;
}

.studio-chat-toggle-label-text {
  font-size: 12px;
  color: #6b7280;
}

.studio-chat-toggle-switch {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 20px;
  flex-shrink: 0;
}

.studio-chat-toggle-switch input {
  display: none;
}

.studio-chat-toggle-slider {
  position: absolute;
  inset: 0;
  background: #d1d5db;
  border-radius: 20px;
  cursor: pointer;
  transition: background 0.2s;
}

.studio-chat-toggle-slider::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  left: 2px;
  bottom: 2px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.2s;
}

.studio-chat-toggle-switch input:checked + .studio-chat-toggle-slider {
  background: #0075b4;
}

.studio-chat-toggle-switch input:checked + .studio-chat-toggle-slider::before {
  transform: translateX(16px);
}

.studio-chat-btn-icon {
  background: none;
  border: 1px solid #d1d5db;
  border-radius: 4px;
  padding: 4px;
  cursor: pointer;
  color: #6b7280;
  display: flex;
  align-items: center;
  justify-content: center;
}

.studio-chat-btn-icon:hover {
  background: #f3f4f6;
  color: #374151;
}

/* --- Context Banner --- */
.studio-chat-context {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: #f8f9fa;
  border-bottom: 1px solid #dee2e6;
  flex-shrink: 0;
}

.studio-chat-context-badge {
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
  color: #fff;
  background: #6c757d;
}

.studio-chat-context-badge[data-type="unit_editor"] {
  background: #0ea5e9;
}

.studio-chat-context-badge[data-type="course_outline"] {
  background: #8b5cf6;
}

.studio-chat-context-badge[data-type="studio_home"] {
  background: #28a745;
}

.studio-chat-context-badge[data-type="course_settings"] {
  background: #f59e0b;
  color: #212529;
}

.studio-chat-context-badge[data-type="assets"] {
  background: #6c757d;
}

.studio-chat-context-text {
  font-size: 12px;
  color: #6c757d;
}

/* --- Messages Area --- */
.studio-chat-messages {
  flex: 1 1 0%;
  overflow-y: auto !important;
  overflow-x: hidden;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
}

.studio-chat-welcome {
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  border-radius: 8px;
  padding: 16px;
  font-size: 13px;
  line-height: 1.6;
  color: #0c4a6e;
}

.studio-chat-welcome ul {
  margin: 8px 0;
  padding-left: 20px;
}

.studio-chat-welcome li {
  margin: 4px 0;
}

/* Message Bubbles */
.studio-chat-message {
  max-width: 90%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 13px;
  line-height: 1.5;
  word-wrap: break-word;
}

.studio-chat-message-user {
  align-self: flex-end;
  background: #0075b4;
  color: #fff;
  border-bottom-right-radius: 4px;
}

.studio-chat-message-assistant {
  align-self: flex-start;
  background: #f3f4f6;
  color: #1f2937;
  border-bottom-left-radius: 4px;
}

/* GFM-style tables inside messages */
.studio-chat-message table.chat-table {
  border-collapse: collapse;
  margin: 10px 0;
  font-size: 12px;
  width: 100%;
  max-width: 100%;
  display: block;
  overflow-x: auto;
  border: 1px solid #cbd5e1;
  border-radius: 4px;
}
.studio-chat-message table.chat-table th,
.studio-chat-message table.chat-table td {
  border: 1px solid #cbd5e1;
  padding: 6px 10px;
  text-align: left;
  vertical-align: top;
  line-height: 1.4;
}
.studio-chat-message table.chat-table thead th {
  background: #1a365d;
  color: #ffffff;
  font-weight: 600;
  border-color: #1a365d;
}
.studio-chat-message table.chat-table tbody tr:nth-child(odd) td {
  background: #ffffff;
}
.studio-chat-message table.chat-table tbody tr:nth-child(even) td {
  background: #f1f5f9;
}
.studio-chat-message table.chat-table tbody tr:hover td {
  background: #e0e7ff;
}

/* Code blocks inside messages */
.studio-chat-message pre {
  background: #1f2937;
  color: #e5e7eb;
  padding: 10px 12px;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 12px;
  margin: 8px 0;
}

.studio-chat-message code {
  font-family: 'SF Mono', 'Menlo', 'Consolas', monospace;
  font-size: 12px;
}

/* Headings inside messages */
.studio-chat-message h4,
.studio-chat-message h5 {
  margin: 10px 0 4px 0;
  font-weight: 600;
  line-height: 1.3;
}

.studio-chat-message h4 {
  font-size: 14px;
}

.studio-chat-message h5 {
  font-size: 13px;
}

/* Lists inside messages */
.studio-chat-message ul {
  margin: 4px 0;
  padding-left: 20px;
}

.studio-chat-message li {
  margin: 2px 0;
}

.studio-chat-message hr {
  border: none;
  border-top: 1px solid #d1d5db;
  margin: 8px 0;
}

/* --- Preview Card --- */
.studio-chat-preview {
  background: #fff;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  margin: 8px 0;
  overflow: visible;
}

.studio-chat-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: #f9fafb;
  border-bottom: 1px solid #e5e7eb;
  font-size: 12px;
  font-weight: 600;
  color: #374151;
}

.studio-chat-preview-type {
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
}

.studio-chat-preview-type-html {
  background: #dcfce7;
  color: #166534;
}

.studio-chat-preview-type-capa {
  background: #fef3c7;
  color: #92400e;
}

.studio-chat-preview-type-video {
  background: #fee2e2;
  color: #991b1b;
}

.studio-chat-preview-type-outline {
  background: #e0e7ff;
  color: #3730a3;
}

.studio-chat-preview-content {
  padding: 12px;
  font-size: 13px;
  max-height: 300px;
  overflow-y: auto;
}

/* Course outline tree */
.studio-chat-outline-tree {
  font-family: 'SF Mono', 'Menlo', 'Consolas', monospace;
  font-size: 12px;
  line-height: 1.8;
  white-space: pre;
  color: #374151;
}

/* --- Action Buttons (Confirm/Edit/Cancel) --- */
/* Use high specificity to override Open edX global button styles */
#studio-chat-container .studio-chat-actions {
  display: flex !important;
  gap: 8px;
  padding: 8px 12px;
  border-top: 1px solid #e5e7eb;
  background: #f9fafb;
}

#studio-chat-container .studio-chat-btn {
  padding: 6px 16px !important;
  border-radius: 6px !important;
  font-size: 12px !important;
  font-weight: 600 !important;
  cursor: pointer !important;
  border: none !important;
  transition: background 0.2s;
  line-height: 1.4 !important;
  text-transform: none !important;
  letter-spacing: normal !important;
  box-shadow: none !important;
  display: inline-block !important;
  visibility: visible !important;
  opacity: 1 !important;
  height: auto !important;
  min-height: 0 !important;
}

#studio-chat-container .studio-chat-btn-confirm {
  background: #059669 !important;
  color: #fff !important;
}

#studio-chat-container .studio-chat-btn-confirm:hover {
  background: #047857 !important;
}

#studio-chat-container .studio-chat-btn-edit {
  background: #f59e0b !important;
  color: #fff !important;
}

#studio-chat-container .studio-chat-btn-edit:hover {
  background: #d97706 !important;
}

#studio-chat-container .studio-chat-btn-cancel {
  background: #e5e7eb !important;
  color: #374151 !important;
}

#studio-chat-container .studio-chat-btn-cancel:hover {
  background: #d1d5db !important;
}

/* --- Tabbed Preview --- */
.studio-chat-tabs-wrapper {
  background: #fff;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  margin: 8px 0;
  overflow: visible;
}

.studio-chat-tabs-counter {
  padding: 6px 12px;
  font-size: 11px;
  color: #6b7280;
  background: #f9fafb;
  border-bottom: 1px solid #e5e7eb;
  border-radius: 8px 8px 0 0;
}

.studio-chat-tabs-done {
  font-weight: 700;
  color: #059669;
}

.studio-chat-tab-bar {
  display: flex;
  overflow-x: auto;
  border-bottom: 1px solid #e5e7eb;
  background: #f9fafb;
  gap: 0;
  scrollbar-width: thin;
}

.studio-chat-tab-bar::-webkit-scrollbar {
  height: 3px;
}

.studio-chat-tab-bar::-webkit-scrollbar-thumb {
  background: #d1d5db;
  border-radius: 3px;
}

#studio-chat-container .studio-chat-tab {
  display: flex !important;
  align-items: center !important;
  gap: 4px !important;
  padding: 6px 10px !important;
  border: none !important;
  border-bottom: 2px solid transparent !important;
  background: transparent !important;
  color: #6b7280 !important;
  font-size: 11px !important;
  font-weight: 500 !important;
  cursor: pointer !important;
  white-space: nowrap !important;
  flex-shrink: 0 !important;
  border-radius: 0 !important;
  transition: all 0.15s !important;
  line-height: 1.3 !important;
  min-height: 0 !important;
  height: auto !important;
  box-shadow: none !important;
  text-transform: none !important;
  letter-spacing: normal !important;
  opacity: 1 !important;
  visibility: visible !important;
}

#studio-chat-container .studio-chat-tab:hover {
  background: #f3f4f6 !important;
  color: #374151 !important;
}

#studio-chat-container .studio-chat-tab.active {
  color: #0075b4 !important;
  border-bottom-color: #0075b4 !important;
  font-weight: 600 !important;
}

#studio-chat-container .studio-chat-tab.confirmed {
  color: #059669 !important;
}

#studio-chat-container .studio-chat-tab.confirmed .studio-chat-tab-num {
  background: #059669;
}

#studio-chat-container .studio-chat-tab.confirmed .studio-chat-tab-num::after {
  content: ' \2713';
}

#studio-chat-container .studio-chat-tab.cancelled {
  color: #9ca3af !important;
  text-decoration: line-through !important;
}

#studio-chat-container .studio-chat-tab.cancelled .studio-chat-tab-num {
  background: #9ca3af;
}

.studio-chat-tab-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #9ca3af;
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  flex-shrink: 0;
}

#studio-chat-container .studio-chat-tab.active .studio-chat-tab-num {
  background: #0075b4;
}

.studio-chat-tab-label {
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.studio-chat-tab-badge {
  padding: 1px 4px;
  border-radius: 3px;
  font-size: 9px;
  font-weight: 700;
  background: #e5e7eb;
  color: #6b7280;
}

.studio-chat-tab-content {
  position: relative;
}

.studio-chat-tab-panel {
  display: none;
}

.studio-chat-tab-panel.active {
  display: block;
}

.studio-chat-tab-status {
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  border-top: 1px solid #e5e7eb;
}

.studio-chat-tab-status-confirm {
  color: #059669;
  background: #ecfdf5;
}

.studio-chat-tab-status-cancel {
  color: #6b7280;
  background: #f9fafb;
}

.studio-chat-tab-status-edit {
  color: #d97706;
  background: #fffbeb;
}

/* --- Go to Course Button --- */
.studio-chat-go-to-course {
  padding: 4px 0;
}

#studio-chat-container .studio-chat-btn-go-course {
  display: inline-block !important;
  padding: 8px 20px !important;
  background: #0075b4 !important;
  color: #fff !important;
  border: none !important;
  border-radius: 8px !important;
  font-size: 13px !important;
  font-weight: 600 !important;
  text-decoration: none !important;
  cursor: pointer !important;
  transition: background 0.2s !important;
  box-shadow: none !important;
  text-transform: none !important;
  letter-spacing: normal !important;
}

#studio-chat-container .studio-chat-btn-go-course:hover {
  background: #005a8c !important;
}

/* --- Refresh Page Button --- */
.studio-chat-refresh-page {
  padding: 4px 0;
}

#studio-chat-container .studio-chat-btn-refresh {
  display: inline-flex !important;
  align-items: center !important;
  gap: 6px !important;
  padding: 8px 20px !important;
  background: #0075b4 !important;
  color: #fff !important;
  border: none !important;
  border-radius: 8px !important;
  font-size: 13px !important;
  font-weight: 600 !important;
  cursor: pointer !important;
  transition: background 0.2s !important;
  box-shadow: none !important;
  text-transform: none !important;
  letter-spacing: normal !important;
}

#studio-chat-container .studio-chat-btn-refresh:hover {
  background: #005a8c !important;
}

#studio-chat-container .studio-chat-btn-refresh svg {
  flex-shrink: 0;
}

/* --- Input Area --- */
.studio-chat-input-area {
  padding: 12px 16px;
  border-top: 1px solid #e5e7eb;
  background: #f9fafb;
  flex-shrink: 0;
}

.studio-chat-input-box {
  border: 1px solid #d1d5db;
  border-radius: 16px;
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.studio-chat-input-box:focus-within {
  border-color: #0075b4;
  box-shadow: 0 0 0 2px rgba(0, 117, 180, 0.15);
}

.studio-chat-form {
  display: flex;
  flex-direction: column;
}

.studio-chat-input {
  width: 100%;
  padding: 12px 14px 4px;
  border: none;
  border-radius: 16px 16px 0 0;
  font-size: 13px;
  font-family: inherit;
  resize: none;
  outline: none;
  min-height: 24px;
  max-height: 120px;
  line-height: 1.4;
  box-sizing: border-box;
  background: transparent;
}

.studio-chat-input:focus {
  border: none;
  box-shadow: none;
}

.studio-chat-input-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 8px 8px;
}

.studio-chat-send {
  width: 30px;
  height: 30px;
  background: #0075b4;
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.2s;
  padding: 0;
}

.studio-chat-send:hover {
  background: #005a8c;
}

.studio-chat-send:disabled {
  background: #d1d5db;
  color: #9ca3af;
  cursor: not-allowed;
}

/* --- Attach button --- */
.studio-chat-attach {
  width: 30px;
  height: 30px;
  background: none;
  border: 1px solid #d1d5db;
  border-radius: 50%;
  color: #6b7280;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  padding: 0;
}

.studio-chat-attach:hover {
  color: #374151;
  border-color: #9ca3af;
  background: #f3f4f6;
}

/* --- File attachment badges --- */
.studio-chat-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px 12px 0;
}

.studio-chat-attachments:empty {
  display: none;
}

.studio-chat-file-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  font-size: 12px;
  color: #374151;
}

.studio-chat-file-badge-name {
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.studio-chat-file-badge-remove {
  background: none;
  border: none;
  color: #9ca3af;
  cursor: pointer;
  font-size: 14px;
  padding: 0 2px;
  line-height: 1;
  transition: color 0.15s;
}

.studio-chat-file-badge-remove:hover {
  color: #991b1b;
}

/* --- Drag-and-drop overlay --- */
.studio-chat-drop-overlay {
  display: none;
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.92);
  z-index: 10;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  pointer-events: none;
}

.studio-chat-drop-overlay.active {
  display: flex;
}

.studio-chat-drop-icon {
  color: #0075b4;
}

.studio-chat-drop-text {
  font-size: 15px;
  font-weight: 500;
  color: #374151;
}

/* --- Loading indicator --- */
.studio-chat-loading {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  align-self: flex-start;
  color: #6b7280;
  font-size: 13px;
}

.studio-chat-loading-dots {
  display: flex;
  gap: 4px;
}

.studio-chat-loading-dots span {
  width: 6px;
  height: 6px;
  background: #9ca3af;
  border-radius: 50%;
  animation: studio-chat-bounce 1.4s infinite ease-in-out both;
}

.studio-chat-loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.studio-chat-loading-dots span:nth-child(2) { animation-delay: -0.16s; }

@keyframes studio-chat-bounce {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1); }
}

/* --- Knowledge Base Button --- */
#studio-chat-container .studio-chat-kb-btn {
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
  width: 100% !important;
  padding: 10px 12px !important;
  background: #f9fafb !important;
  border: 1px solid #d1d5db !important;
  border-radius: 8px !important;
  font-size: 13px !important;
  font-weight: 500 !important;
  color: #374151 !important;
  cursor: pointer !important;
  transition: background 0.15s, border-color 0.15s !important;
  box-shadow: none !important;
  text-transform: none !important;
  letter-spacing: normal !important;
  line-height: 1.4 !important;
  height: auto !important;
  min-height: 0 !important;
}

#studio-chat-container .studio-chat-kb-btn:hover {
  background: #f3f4f6 !important;
  border-color: #9ca3af !important;
}

#studio-chat-container .studio-chat-kb-btn svg {
  flex-shrink: 0;
  color: #6b7280;
}

.studio-chat-kb-badge {
  margin-left: auto;
  background: #0075b4;
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
}

/* --- Knowledge Base Modal --- */
.studio-chat-kb-modal {
  flex: 1 1 0%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.studio-chat-kb-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid #e5e7eb;
  background: #f9fafb;
}

.studio-chat-kb-modal-header h4 {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: #1f2937;
}

.studio-chat-kb-course {
  font-size: 11px;
  color: #6b7280;
  display: block;
  margin-top: 2px;
}

/* --- KB Scope Tabs --- */
.studio-chat-kb-scope-tabs {
  display: flex;
  border-bottom: 1px solid #e5e7eb;
  background: #fff;
}

#studio-chat-container .studio-chat-kb-scope-tab {
  flex: 1 !important;
  padding: 8px 16px !important;
  border: none !important;
  border-bottom: 2px solid transparent !important;
  background: transparent !important;
  font-size: 12px !important;
  font-weight: 500 !important;
  color: #6b7280 !important;
  cursor: pointer !important;
  transition: all 0.15s !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  text-transform: none !important;
  letter-spacing: normal !important;
  line-height: 1.4 !important;
  height: auto !important;
  min-height: 0 !important;
}

#studio-chat-container .studio-chat-kb-scope-tab:hover {
  color: #374151 !important;
  background: #f9fafb !important;
}

#studio-chat-container .studio-chat-kb-scope-tab.active {
  color: #0075b4 !important;
  border-bottom-color: #0075b4 !important;
  font-weight: 600 !important;
}

/* --- KB Add Form --- */
.studio-chat-kb-add {
  padding: 12px 16px;
  border-bottom: 1px solid #e5e7eb;
  background: #fff;
}

.studio-chat-kb-add-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 10px;
  background: #f3f4f6;
  border-radius: 6px;
  padding: 2px;
}

#studio-chat-container .studio-chat-kb-add-tab {
  flex: 1 !important;
  padding: 5px 10px !important;
  border: none !important;
  border-radius: 4px !important;
  background: transparent !important;
  font-size: 11px !important;
  font-weight: 500 !important;
  color: #6b7280 !important;
  cursor: pointer !important;
  transition: all 0.15s !important;
  box-shadow: none !important;
  text-transform: none !important;
  letter-spacing: normal !important;
  line-height: 1.4 !important;
  height: auto !important;
  min-height: 0 !important;
}

#studio-chat-container .studio-chat-kb-add-tab.active {
  background: #fff !important;
  color: #374151 !important;
  font-weight: 600 !important;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05) !important;
}

.studio-chat-kb-add-panel {
  display: none;
}

.studio-chat-kb-add-panel.active {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.studio-chat-kb-input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 12px;
  color: #374151;
  background: #fff;
  box-sizing: border-box;
}

.studio-chat-kb-input:focus {
  outline: none;
  border-color: #0075b4;
  box-shadow: 0 0 0 2px rgba(0, 117, 180, 0.15);
}

.studio-chat-kb-textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 12px;
  color: #374151;
  background: #fff;
  resize: vertical;
  min-height: 60px;
  max-height: 150px;
  font-family: inherit;
  box-sizing: border-box;
}

.studio-chat-kb-textarea:focus {
  outline: none;
  border-color: #0075b4;
  box-shadow: 0 0 0 2px rgba(0, 117, 180, 0.15);
}

#studio-chat-container .studio-chat-kb-add-btn {
  padding: 7px 14px !important;
  background: #0075b4 !important;
  color: #fff !important;
  border: none !important;
  border-radius: 6px !important;
  font-size: 12px !important;
  font-weight: 600 !important;
  cursor: pointer !important;
  transition: background 0.15s !important;
  align-self: flex-start !important;
  box-shadow: none !important;
  text-transform: none !important;
  letter-spacing: normal !important;
  line-height: 1.4 !important;
  height: auto !important;
  min-height: 0 !important;
}

#studio-chat-container .studio-chat-kb-add-btn:hover {
  background: #005a8c !important;
}

#studio-chat-container .studio-chat-kb-add-btn:disabled {
  background: #d1d5db !important;
  color: #9ca3af !important;
  cursor: not-allowed !important;
}

/* --- KB File Drop Zone --- */
.studio-chat-kb-file-drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 16px;
  border: 2px dashed #d1d5db;
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  color: #6b7280;
  font-size: 12px;
  text-align: center;
}

.studio-chat-kb-file-drop:hover,
.studio-chat-kb-file-drop.dragover {
  border-color: #0075b4;
  background: #f0f9ff;
}

.studio-chat-kb-file-name {
  font-weight: 600;
  color: #374151;
  font-size: 12px;
}

.studio-chat-kb-file-name:empty {
  display: none;
}

/* --- KB Document List --- */
.studio-chat-kb-list {
  flex: 1 1 0%;
  overflow-y: auto;
  padding: 8px 16px;
}

.studio-chat-kb-empty {
  text-align: center;
  padding: 24px 16px;
  color: #9ca3af;
  font-size: 12px;
}

.studio-chat-kb-doc {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 0;
  border-bottom: 1px solid #f3f4f6;
}

.studio-chat-kb-doc:last-child {
  border-bottom: none;
}

.studio-chat-kb-doc-info {
  flex: 1;
  min-width: 0;
}

.studio-chat-kb-doc-title {
  font-size: 13px;
  font-weight: 500;
  color: #1f2937;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.studio-chat-kb-doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
  font-size: 11px;
  color: #9ca3af;
}

.studio-chat-kb-doc-source {
  background: #e0e7ff;
  color: #3730a3;
  padding: 0 5px;
  border-radius: 3px;
  font-size: 10px;
  font-weight: 500;
}

.studio-chat-kb-doc-global {
  background: #dcfce7;
  color: #166534;
  padding: 0 5px;
  border-radius: 3px;
  font-size: 10px;
  font-weight: 500;
}

#studio-chat-container .studio-chat-kb-doc-delete {
  background: none !important;
  border: none !important;
  color: #d1d5db !important;
  cursor: pointer !important;
  padding: 4px !important;
  border-radius: 4px !important;
  transition: color 0.15s, background 0.15s !important;
  flex-shrink: 0 !important;
  box-shadow: none !important;
  height: auto !important;
  min-height: 0 !important;
}

#studio-chat-container .studio-chat-kb-doc-delete:hover {
  color: #991b1b !important;
  background: #fef2f2 !important;
}

/* --- Configuration Button --- */
#studio-chat-container .studio-chat-settings-divider {
  border-top: 1px solid #e5e7eb !important;
  margin: 4px 0 8px !important;
}

#studio-chat-container .studio-chat-config-btn {
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
  width: 100% !important;
  padding: 10px 12px !important;
  border: 1px solid #e5e7eb !important;
  border-radius: 8px !important;
  background: #fff !important;
  color: #374151 !important;
  cursor: pointer !important;
  font-size: 13px !important;
  font-weight: 500 !important;
  transition: background 0.15s, border-color 0.15s !important;
  box-shadow: none !important;
  height: auto !important;
  min-height: 0 !important;
}

#studio-chat-container .studio-chat-config-btn:hover {
  background: #f9fafb !important;
  border-color: #d1d5db !important;
}

#studio-chat-container .studio-chat-config-btn svg {
  flex-shrink: 0 !important;
  color: #6b7280 !important;
}

/* --- Configuration Modal --- */
#studio-chat-container .studio-chat-config-modal {
  display: none;
  flex-direction: column !important;
  flex: 1 1 0% !important;
  min-height: 0 !important;
  overflow: hidden !important;
}

#studio-chat-container .studio-chat-config-modal-header {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  padding: 12px 16px !important;
  border-bottom: 1px solid #e5e7eb !important;
  flex-shrink: 0 !important;
}

#studio-chat-container .studio-chat-config-modal-header h4 {
  margin: 0 !important;
  font-size: 15px !important;
  font-weight: 600 !important;
  color: #111827 !important;
}

/* --- Config Auth Gate --- */
#studio-chat-container .studio-chat-config-auth {
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 40px 24px !important;
  gap: 16px !important;
  flex: 1 !important;
}

#studio-chat-container .studio-chat-config-auth.active {
  display: flex !important;
}

#studio-chat-container .studio-chat-config-auth:not(.active) {
  display: none !important;
}

#studio-chat-container .studio-chat-config-lock-icon {
  color: #9ca3af !important;
}

#studio-chat-container .studio-chat-config-auth-text {
  color: #6b7280 !important;
  font-size: 13px !important;
  text-align: center !important;
  margin: 0 !important;
}

#studio-chat-container .studio-chat-config-password-input {
  width: 100% !important;
  max-width: 280px !important;
  padding: 10px 12px !important;
  border: 1px solid #d1d5db !important;
  border-radius: 8px !important;
  font-size: 14px !important;
  background: #fff !important;
  color: #111827 !important;
  box-shadow: none !important;
  height: auto !important;
}

#studio-chat-container .studio-chat-config-password-input:focus {
  outline: none !important;
  border-color: #3b82f6 !important;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1) !important;
}

#studio-chat-container .studio-chat-config-auth-error {
  color: #dc2626 !important;
  font-size: 13px !important;
  text-align: center !important;
  margin: 0 !important;
}

#studio-chat-container .studio-chat-config-auth-btn {
  padding: 10px 24px !important;
  background: #0075b4 !important;
  color: #fff !important;
  border: none !important;
  border-radius: 8px !important;
  font-size: 13px !important;
  font-weight: 500 !important;
  cursor: pointer !important;
  transition: background 0.15s !important;
  box-shadow: none !important;
  height: auto !important;
}

#studio-chat-container .studio-chat-config-auth-btn:hover {
  background: #005a8c !important;
}

#studio-chat-container .studio-chat-config-auth-btn:disabled {
  opacity: 0.6 !important;
  cursor: not-allowed !important;
}

/* --- Config Settings Form --- */
#studio-chat-container .studio-chat-config-form {
  flex-direction: column !important;
  flex: 1 1 0% !important;
  min-height: 0 !important;
  overflow: hidden !important;
}

#studio-chat-container .studio-chat-config-form.active {
  display: flex !important;
}

#studio-chat-container .studio-chat-config-form:not(.active) {
  display: none !important;
}

#studio-chat-container .studio-chat-config-groups {
  flex: 1 1 0% !important;
  overflow-y: auto !important;
  padding: 12px 16px !important;
}

#studio-chat-container .studio-chat-config-group {
  margin-bottom: 20px !important;
}

#studio-chat-container .studio-chat-config-group-title {
  font-size: 11px !important;
  font-weight: 700 !important;
  text-transform: uppercase !important;
  letter-spacing: 0.05em !important;
  color: #6b7280 !important;
  margin-bottom: 10px !important;
  padding-bottom: 6px !important;
  border-bottom: 1px solid #f3f4f6 !important;
}

#studio-chat-container .studio-chat-config-field {
  margin-bottom: 12px !important;
}

#studio-chat-container .studio-chat-config-label {
  display: block !important;
  font-size: 12px !important;
  font-weight: 500 !important;
  color: #374151 !important;
  margin-bottom: 4px !important;
}

#studio-chat-container .studio-chat-config-input-wrapper {
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
}

#studio-chat-container .studio-chat-config-input {
  flex: 1 !important;
  padding: 8px 10px !important;
  border: 1px solid #d1d5db !important;
  border-radius: 6px !important;
  font-size: 13px !important;
  background: #fff !important;
  color: #111827 !important;
  box-shadow: none !important;
  height: auto !important;
  min-height: 0 !important;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace !important;
}

#studio-chat-container .studio-chat-config-input:focus {
  outline: none !important;
  border-color: #3b82f6 !important;
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1) !important;
}

#studio-chat-container .studio-chat-config-source {
  font-size: 10px !important;
  font-weight: 600 !important;
  padding: 2px 6px !important;
  border-radius: 4px !important;
  flex-shrink: 0 !important;
  text-transform: uppercase !important;
  letter-spacing: 0.02em !important;
}

#studio-chat-container .studio-chat-config-source-db {
  background: #dcfce7 !important;
  color: #166534 !important;
}

#studio-chat-container .studio-chat-config-source-env {
  background: #dbeafe !important;
  color: #1e40af !important;
}

#studio-chat-container .studio-chat-config-source-default {
  background: #f3f4f6 !important;
  color: #6b7280 !important;
}

/* --- Config Actions --- */
#studio-chat-container .studio-chat-config-actions {
  padding: 12px 16px !important;
  border-top: 1px solid #e5e7eb !important;
  flex-shrink: 0 !important;
}

#studio-chat-container .studio-chat-config-save-btn {
  width: 100% !important;
  padding: 10px !important;
  background: #0075b4 !important;
  color: #fff !important;
  border: none !important;
  border-radius: 8px !important;
  font-size: 13px !important;
  font-weight: 500 !important;
  cursor: pointer !important;
  transition: background 0.15s !important;
  box-shadow: none !important;
  height: auto !important;
}

#studio-chat-container .studio-chat-config-save-btn:hover {
  background: #005a8c !important;
}

#studio-chat-container .studio-chat-config-save-btn:disabled {
  opacity: 0.6 !important;
  cursor: not-allowed !important;
}

#studio-chat-container .studio-chat-config-status {
  padding: 8px 16px !important;
  font-size: 12px !important;
  text-align: center !important;
  flex-shrink: 0 !important;
}

#studio-chat-container .studio-chat-config-status-success {
  color: #166534 !important;
  background: #f0fdf4 !important;
}

#studio-chat-container .studio-chat-config-status-error {
  color: #991b1b !important;
  background: #fef2f2 !important;
}

#studio-chat-container .studio-chat-config-status-info {
  color: #1e40af !important;
  background: #eff6ff !important;
}

/* --- RAG References --- */

#studio-chat-container .studio-chat-references {
  align-self: flex-start !important;
  max-width: 90% !important;
  margin-top: -4px !important;
  margin-bottom: 4px !important;
}

#studio-chat-container .studio-chat-references-toggle {
  display: flex !important;
  align-items: center !important;
  gap: 4px !important;
  padding: 4px 8px !important;
  background: none !important;
  border: none !important;
  color: #6b7280 !important;
  font-size: 12px !important;
  cursor: pointer !important;
  box-shadow: none !important;
  height: auto !important;
  transition: color 0.15s !important;
}

#studio-chat-container .studio-chat-references-toggle:hover {
  color: #374151 !important;
}

#studio-chat-container .studio-chat-references-toggle svg {
  transition: transform 0.2s !important;
  flex-shrink: 0 !important;
}

#studio-chat-container .studio-chat-references-toggle.open svg {
  transform: rotate(90deg) !important;
}

#studio-chat-container .studio-chat-references-list {
  display: none !important;
  flex-direction: column !important;
  gap: 6px !important;
  padding: 4px 8px 8px !important;
}

#studio-chat-container .studio-chat-references-list.open {
  display: flex !important;
}

#studio-chat-container .studio-chat-reference-item {
  background: #f9fafb !important;
  border: 1px solid #e5e7eb !important;
  border-radius: 6px !important;
  padding: 8px 10px !important;
  border-left: 3px solid #0075b4 !important;
}

#studio-chat-container .studio-chat-reference-title {
  font-size: 12px !important;
  font-weight: 600 !important;
  color: #374151 !important;
  margin-bottom: 4px !important;
}

#studio-chat-container .studio-chat-reference-chunk {
  font-size: 11px !important;
  color: #6b7280 !important;
  line-height: 1.4 !important;
  overflow: hidden !important;
  display: -webkit-box !important;
  -webkit-line-clamp: 3 !important;
  -webkit-box-orient: vertical !important;
}

#studio-chat-container .studio-chat-reference-chunk.expanded {
  -webkit-line-clamp: unset !important;
  display: block !important;
}

#studio-chat-container .studio-chat-reference-expand {
  background: none !important;
  border: none !important;
  color: #0075b4 !important;
  font-size: 11px !important;
  cursor: pointer !important;
  padding: 2px 0 0 !important;
  box-shadow: none !important;
  height: auto !important;
}

#studio-chat-container .studio-chat-reference-expand:hover {
  text-decoration: underline !important;
}

/* --- Responsive --- */
@media (max-width: 1200px) {
  .studio-chat-sidebar {
    width: 400px;
    min-width: 400px;
    right: -420px;
  }

  body.studio-chat-open .wrapper-view {
    margin-right: 400px;
  }
}

/* ─── Session History Panel ─────────────────────────────────────── */

.studio-chat-history {
  flex: 1 1 0%;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.studio-chat-history-list {
  flex: 1 1 0%;
  overflow-y: auto;
  padding: 4px 0;
}

.studio-chat-history-empty {
  text-align: center;
  padding: 40px 24px;
  color: #9ca3af;
  font-size: 13px;
  line-height: 1.6;
}

#studio-chat-container .studio-chat-session-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 16px;
  cursor: pointer;
  border-bottom: 1px solid #f3f4f6;
  transition: background 0.15s;
}

#studio-chat-container .studio-chat-session-item:hover {
  background: #f9fafb;
}

#studio-chat-container .studio-chat-session-item.studio-chat-session-active {
  background: #f0f9ff;
  border-left: 3px solid #0075b4;
  padding-left: 13px;
}

.studio-chat-session-title {
  font-size: 13px;
  font-weight: 500;
  color: #1f2937;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.4;
}

.studio-chat-session-meta {
  display: flex;
  gap: 8px;
  font-size: 11px;
  color: #9ca3af;
}

/* ─── Session History: Loader & End-of-list ─────────────────────── */

.studio-chat-history-loader {
  display: flex;
  justify-content: center;
  padding: 16px 0;
  flex-shrink: 0;
}

.studio-chat-spinner {
  width: 22px;
  height: 22px;
  border: 2.5px solid #e5e7eb;
  border-top-color: #0075b4;
  border-radius: 50%;
  animation: studioChatSpin 0.6s linear infinite;
}

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

.studio-chat-history-end {
  text-align: center;
  padding: 12px 16px 16px;
  color: #d1d5db;
  font-size: 11px;
  flex-shrink: 0;
}