/* Local fonts (Inter & JetBrains Mono) */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('vendor/fonts/inter-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('vendor/fonts/inter-latin-500-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('vendor/fonts/inter-latin-600-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('vendor/fonts/inter-latin-700-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('vendor/fonts/jetbrains-mono-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('vendor/fonts/jetbrains-mono-latin-500-normal.woff2') format('woff2');
}

:root, [data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fb;
  --bg-tertiary: #f0f2f5;
  --bg-hover: #e8eaed;
  --border: #e2e5e9;
  --border-light: #eff1f3;
  --text-primary: #1a1d21;
  --text-secondary: #5f6368;
  --text-muted: #9aa0a6;
  --accent: #4f6ef7;
  --accent-hover: #3b5de7;
  --accent-bg: rgba(79, 110, 247, 0.08);
  --accent-border: rgba(79, 110, 247, 0.25);
  --green: #34a853;
  --green-bg: rgba(52, 168, 83, 0.08);
  --red: #ea4335;
  --orange: #fbbc04;
  --purple: #a142f4;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --transition: 0.2s ease;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* Dark mode (#2) */
[data-theme="dark"] {
  --bg-primary: #1a1d23;
  --bg-secondary: #13151a;
  --bg-tertiary: #23262e;
  --bg-hover: #2d313a;
  --border: #30363d;
  --border-light: #21262d;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #6d8cff;
  --accent-hover: #5a7aff;
  --accent-bg: rgba(109, 140, 255, 0.1);
  --accent-border: rgba(109, 140, 255, 0.3);
  --green: #4ade80;
  --green-bg: rgba(74, 222, 128, 0.1);
  --red: #f87171;
  --orange: #fbbf24;
  --purple: #c084fc;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
  --shadow: 0 2px 12px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.4);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font);
  background: var(--bg-secondary);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 56px;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.header-left { display: flex; align-items: center; gap: 12px; }

.logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.3px;
}

.logo svg { width: 22px; height: 22px; color: var(--accent); }

.header-actions { display: flex; align-items: center; gap: 8px; }

/* Status indicator */
.workspace-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: var(--bg-secondary);
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--border);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--green);
  background: var(--green-bg);
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid rgba(52,168,83,0.2);
}

.status-dot {
  width: 8px; height: 8px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
  margin-right: 4px;
  display: inline-block;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(52,168,83,0.4); }
  50% { opacity: 0.8; box-shadow: 0 0 0 6px rgba(52,168,83,0); }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

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

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

.btn-accent {
  background: var(--accent-bg);
  border-color: var(--accent-border);
  color: var(--accent);
}
.btn-accent:hover { background: rgba(79, 110, 247, 0.14); }

.btn-danger {
  background: rgba(234, 67, 53, 0.06);
  border-color: rgba(234, 67, 53, 0.25);
  color: var(--red);
}
.btn-danger:hover { background: rgba(234, 67, 53, 0.12); }

.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-icon { padding: 6px 8px; }

/* Main layout */
.main { display: flex; height: calc(100vh - 56px); }

/* Sidebar */
.sidebar {
  width: 260px;
  background: var(--bg-primary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: width var(--transition);
}
.sidebar.collapsed { width: 0; overflow: hidden; border-right: none; }

/* Sidebar search (#5) */
.sidebar-search {
  padding: 8px;
  border-bottom: 1px solid var(--border);
}
.sidebar-search input {
  width: 100%;
  padding: 6px 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13px;
  font-family: var(--font);
  outline: none;
}
.sidebar-search input:focus {
  border-color: var(--accent);
}
.sidebar-search input::placeholder {
  color: var(--text-muted);
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}
.sidebar-content::-webkit-scrollbar { width: 4px; }
.sidebar-content::-webkit-scrollbar-thumb { background: var(--bg-hover); border-radius: 2px; }

/* Diagram list */
.diagram-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  margin-bottom: 2px;
}
.diagram-item:hover { background: var(--bg-tertiary); }
.diagram-item.active { background: var(--accent-bg); border: 1px solid var(--accent-border); }

.diagram-item-info { flex: 1; min-width: 0; }
.diagram-item-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.diagram-item-meta { font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.diagram-item-type {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 12px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  flex-shrink: 0;
  margin-left: 8px;
}
.diagram-item-actions { display: none; margin-left: 4px; }
.diagram-item:hover .diagram-item-actions { display: flex; }
.diagram-item:hover .diagram-item-type { display: none; }

/* Template grid */
.template-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; padding: 8px; }
.template-card {
  padding: 12px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  background: var(--bg-primary);
}
.template-card:hover { border-color: var(--accent); background: var(--accent-bg); }
.template-card-icon { font-size: 20px; margin-bottom: 4px; }
.template-card-name { font-size: 12px; color: var(--text-secondary); }

/* Editor area */
.editor-area { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.editor-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 20px;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  gap: 8px;
}
.editor-toolbar-left { display: flex; align-items: center; gap: 8px; flex: 1; min-width: 0; }
.editor-toolbar-right { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }

.diagram-name-input {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  flex: 1;
  min-width: 0;
}
.diagram-name-input:hover { border-color: var(--border); }
.diagram-name-input:focus { border-color: var(--accent); outline: none; background: var(--bg-secondary); }

/* Draft indicator (#3) */
.draft-indicator {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 12px;
  background: var(--orange);
  color: #1a1d21;
  font-weight: 600;
  flex-shrink: 0;
}
[data-theme="dark"] .draft-indicator {
  background: #92600a;
  color: #fbbf24;
}

/* Split pane */
.split-pane { display: flex; flex: 1; overflow: hidden; }

.pane { display: flex; flex-direction: column; min-width: 0; overflow: hidden; }
.pane-preview { flex: 3; }
.pane-editor { flex: 1; min-width: 260px; max-width: 380px; }

.pane-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 16px;
  background: var(--bg-tertiary);
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
}

.divider {
  width: 3px;
  background: var(--border-light);
  cursor: col-resize;
  transition: background var(--transition);
  flex-shrink: 0;
}
.divider:hover { background: var(--accent); }

/* Code editor */
#code-editor {
  width: 100%;
  flex: 1;
  background: var(--bg-primary);
  color: var(--text-primary);
  border: none;
  resize: none;
  padding: 16px;
  font-family: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  font-size: 13px;
  line-height: 1.7;
  tab-size: 2;
  outline: none;
}
#code-editor::placeholder { color: var(--text-muted); }

/* CodeMirror overrides (#1) */
.pane-editor .CodeMirror {
  flex: 1;
  height: auto;
  font-family: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  font-size: 13px;
  line-height: 1.7;
  background: var(--bg-primary);
  color: var(--text-primary);
  border: none;
}
.pane-editor .CodeMirror-gutters {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
}
.pane-editor .CodeMirror-linenumber {
  color: var(--text-muted);
}
[data-theme="light"] .pane-editor .CodeMirror {
  background: var(--bg-primary);
}
[data-theme="dark"] .pane-editor .CodeMirror {
  background: var(--bg-primary);
  color: var(--text-primary);
}
[data-theme="dark"] .pane-editor .CodeMirror-gutters {
  background: var(--bg-secondary);
  border-right-color: var(--border);
}
[data-theme="dark"] .pane-editor .CodeMirror-linenumber {
  color: var(--text-muted);
}
[data-theme="dark"] .pane-editor .CodeMirror-cursor {
  border-left-color: var(--text-primary);
}

/* Preview */
.preview-container {
  flex: 1;
  overflow: hidden;
  position: relative;
  padding: 0;
  background: var(--bg-secondary);
  transition: opacity 0.3s ease;
  cursor: grab;
  user-select: none;
}
.preview-container.updating { opacity: 0.3; }
.preview-container.updated { opacity: 1; transition: opacity 0.5s ease; }

#preview { overflow: visible; }
#preview svg { overflow: visible; }

/* Empty state */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  gap: 12px;
  padding: 40px;
  text-align: center;
}
.empty-state-icon { font-size: 40px; opacity: 0.4; }
.empty-state h3 { font-size: 16px; color: var(--text-secondary); font-weight: 600; }
.empty-state p { font-size: 13px; max-width: 320px; }

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 10px 18px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 13px;
  box-shadow: var(--shadow);
  z-index: 1000;
  animation: slideUp 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}
.toast.success { border-color: rgba(52,168,83,0.4); }
.toast.error { border-color: rgba(234,67,53,0.4); }

@keyframes slideUp {
  from { transform: translateY(16px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: fadeIn 0.15s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  width: 90%;
  max-width: 520px;
  box-shadow: var(--shadow-lg);
}
.modal h2 { font-size: 18px; margin-bottom: 16px; font-weight: 700; color: var(--text-primary); }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 20px; }

.share-link { display: flex; gap: 8px; margin-top: 12px; }
.share-link input {
  flex: 1;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  color: var(--text-primary);
  font-size: 13px;
  font-family: monospace;
}
.share-link input:focus { outline: none; border-color: var(--accent); }

/* Tab bar */
.tab-bar { display: flex; border-bottom: 1px solid var(--border); background: var(--bg-primary); }
.tab {
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}
.tab:hover { color: var(--text-primary); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* Error display */
.error-display {
  color: var(--red);
  font-size: 12px;
  padding: 10px 16px;
  background: rgba(234,67,53,0.05);
  border-top: 1px solid rgba(234,67,53,0.2);
  font-family: monospace;
  max-height: 80px;
  overflow-y: auto;
}

/* Type selector */
.type-selector { display: flex; gap: 4px; flex-wrap: wrap; margin: 12px 0; }
.type-selector .btn { font-size: 12px; padding: 4px 10px; }
.type-selector .btn.active { background: var(--accent-bg); border-color: var(--accent); color: var(--accent); }

/* Notification */
.live-notification {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--accent);
  color: white;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  z-index: 1000;
  animation: slideIn 0.3s ease-out;
  box-shadow: var(--shadow-lg);
}
@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}
@keyframes slideOut {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(100%); opacity: 0; }
}

/* Mermaid animations */
@keyframes nodePopIn {
  0% { transform: scale(0); opacity: 0; }
  70% { transform: scale(1.05); }
  100% { transform: scale(1); opacity: 1; }
}
@keyframes edgeDrawIn {
  from { stroke-dashoffset: 1000; }
  to { stroke-dashoffset: 0; }
}
@keyframes labelFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Version history (#12) */
.version-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
  background: var(--bg-secondary);
}
.version-time {
  font-size: 13px;
  color: var(--text-secondary);
  font-family: monospace;
}

/* Keyboard shortcuts (#15) */
.shortcuts-list {
  margin-top: 12px;
}
.shortcut-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-light);
  font-size: 13px;
  color: var(--text-secondary);
}
.shortcut-item:last-child { border-bottom: none; }
.shortcut-item kbd {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 12px;
  font-family: monospace;
  color: var(--text-primary);
}

/* User menu */
.user-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.user-dropdown-wrapper {
  position: relative;
}

.user-badge-btn {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  padding: 4px 12px;
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  border-radius: 20px;
  white-space: nowrap;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
  font-family: var(--font);
  transition: var(--transition);
}

.user-badge-btn:hover {
  background: rgba(79, 110, 247, 0.14);
}

.user-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 200px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 200;
  overflow: hidden;
  animation: fadeIn 0.12s ease;
}

.user-dropdown-header {
  padding: 12px 14px;
}

.user-dropdown-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.user-dropdown-workspace {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

.user-dropdown-divider {
  height: 1px;
  background: var(--border);
}

.user-dropdown-item {
  display: block;
  width: 100%;
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  font-family: var(--font);
  transition: var(--transition);
}

.user-dropdown-item:hover {
  background: var(--bg-tertiary);
}

.user-dropdown-danger {
  color: var(--red);
}

.user-dropdown-danger:hover {
  background: rgba(234, 67, 53, 0.06);
}

/* Auth modal */
.auth-modal-content {
  width: 420px;
  max-width: 90vw;
}

.auth-tabs {
  display: flex;
  border-bottom: 2px solid var(--border);
  margin-bottom: 20px;
}

.auth-tab {
  flex: 1;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
}

.auth-tab:hover {
  color: var(--text-primary);
}

.auth-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.auth-field label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.auth-field input {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font);
  outline: none;
  transition: var(--transition);
}

.auth-field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

.auth-error {
  color: var(--red);
  font-size: 13px;
  min-height: 18px;
}

.auth-submit {
  width: 100%;
  padding: 10px;
  font-size: 14px;
  font-weight: 600;
  margin-top: 4px;
}

.auth-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Password strength indicator */
.password-strength {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}

.strength-bar {
  flex: 1;
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: 2px;
  overflow: hidden;
}

.strength-fill {
  height: 100%;
  width: 0;
  border-radius: 2px;
  transition: width 0.3s ease, background 0.3s ease;
}

.strength-text {
  font-size: 11px;
  font-weight: 600;
  flex-shrink: 0;
  min-width: 48px;
}

/* MCP Config modal */
.modal-wide {
  max-width: 640px;
}

.mcp-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}

.mcp-info-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
}

.mcp-info-row + .mcp-info-row {
  border-top: 1px solid var(--border);
}

.mcp-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  flex-shrink: 0;
  margin-right: 12px;
}

.mcp-copy-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
  justify-content: flex-end;
}

.mcp-value {
  font-size: 12px;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-primary);
  background: var(--bg-tertiary);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 320px;
}

.mcp-config-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 12px;
}

.mcp-tab {
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
}

.mcp-tab:hover {
  background: var(--bg-tertiary);
}

.mcp-tab.active {
  background: var(--accent-bg);
  border-color: var(--accent-border);
  color: var(--accent);
}

.mcp-config-block {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.mcp-config-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

.mcp-config-code {
  padding: 14px;
  margin: 0;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
  user-select: all;
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar { width: 0; overflow: hidden; border-right: none; }
  .split-pane { flex-direction: column; }
  .divider { width: 100%; height: 3px; cursor: row-resize; }
  .pane-editor { max-width: none; min-width: 0; flex: 1; }
  .pane-preview { flex: 2; }
}