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

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #13131a;
  --bg-tertiary: #1a1a24;
  --bg-glass: rgba(26, 26, 36, 0.7);
  
  --accent-indigo: #6366f1;
  --accent-purple: #8b5cf6;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --accent-yellow: #f59e0b;
  
  --text-primary: #e5e7eb;
  --text-secondary: #9ca3af;
  --text-tertiary: #6b7280;
  
  --border-color: rgba(99, 102, 241, 0.2);
  --border-hover: rgba(99, 102, 241, 0.4);
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: var(--font-sans);
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-tertiary) 100%);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
}

.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* Top Navigation */
.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  height: 3.5rem;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
}

.nav-left, .nav-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--accent-indigo);
}

.logo svg {
  color: var(--accent-indigo);
}

.server-selector {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.select-input {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.875rem;
  font-family: var(--font-sans);
  min-width: 200px;
  transition: var(--transition);
}

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

.select-input:focus {
  outline: none;
  border-color: var(--accent-indigo);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

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

.user-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.875rem;
}

/* Main Content Area */
.main-content {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: 280px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: relative;
}

.sidebar-header {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-tabs {
  display: flex;
  gap: 0.5rem;
}

.sidebar-tab {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.5rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.875rem;
  font-family: var(--font-sans);
  transition: var(--transition);
}

.sidebar-tab.active {
  background: var(--accent-indigo);
  color: white;
}

.sidebar-tab:hover:not(.active) {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  margin-bottom: 1rem;
}

.search-box svg {
  color: var(--text-tertiary);
  flex-shrink: 0;
}

.search-box input {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-family: var(--font-sans);
  width: 100%;
  outline: none;
}

.file-tree, .favorites-list, .recent-list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.file-item, .favorite-item, .recent-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.75rem;
  background: var(--bg-tertiary);
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
}

.file-item:hover, .favorite-item:hover, .recent-item:hover {
  background: var(--bg-secondary);
  border-color: var(--accent-indigo);
}

.file-icon, .fav-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.file-name, .fav-name, .recent-name {
  font-size: 0.875rem;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.recent-item {
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
}

.recent-path {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.empty-state {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-secondary);
}

.empty-state p {
  margin-bottom: 0.5rem;
}

.empty-state small {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.sidebar-resize-handle {
  position: absolute;
  right: -2px;
  top: 0;
  bottom: 0;
  width: 4px;
  cursor: col-resize;
  background: transparent;
  transition: var(--transition);
}

.sidebar-resize-handle:hover {
  background: var(--accent-indigo);
}

/* Editor Area */
.editor-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.editor-tabs {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
}

.tabs-list {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
}

.editor-tab {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px 6px 0 0;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.editor-tab.active {
  background: var(--bg-primary);
  border-bottom-color: transparent;
  color: var(--accent-indigo);
}

.editor-tab:hover:not(.active) {
  background: var(--bg-secondary);
  border-color: var(--accent-indigo);
}

.tab-name {
  font-size: 0.875rem;
}

.tab-close {
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: 1.25rem;
  line-height: 1;
  padding: 0;
  transition: var(--transition);
}

.tab-close:hover {
  color: var(--accent-red);
}

.empty-tabs {
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

/* Toolbar */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.toolbar-left, .toolbar-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.toolbar-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.875rem;
  font-family: var(--font-sans);
  transition: var(--transition);
}

.toolbar-btn:hover:not(:disabled) {
  background: var(--bg-secondary);
  border-color: var(--accent-indigo);
  color: var(--accent-indigo);
}

.toolbar-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.toolbar-btn.primary {
  background: var(--accent-indigo);
  border-color: var(--accent-indigo);
  color: white;
}

.toolbar-btn.primary:hover:not(:disabled) {
  background: #5558e3;
}

.toolbar-btn.success {
  background: var(--accent-green);
  border-color: var(--accent-green);
  color: white;
}

.toolbar-btn.success:hover:not(:disabled) {
  background: #0e9870;
}

.toolbar-divider {
  width: 1px;
  height: 24px;
  background: var(--border-color);
}

/* Mode Switcher */
.mode-switcher {
  display: flex;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  overflow: hidden;
}

.mode-btn {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 0.875rem;
  background: transparent;
  border: none;
  border-right: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.875rem;
  font-family: var(--font-sans);
  transition: var(--transition);
}

.mode-btn:last-child {
  border-right: none;
}

.mode-btn.active {
  background: var(--accent-indigo);
  color: white;
}

.mode-btn:hover:not(.active) {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

/* Editor Content */
.editor-content {
  flex: 1;
  position: relative;
  overflow: hidden;
}

.monaco-container, .grape-container {
  height: 100%;
  width: 100%;
}

/* Preview Panel */
.preview-panel {
  width: 400px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border-left: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.875rem;
  font-weight: 500;
}

.preview-controls {
  display: flex;
  gap: 0.5rem;
}

.device-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.375rem;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.device-btn.active {
  background: var(--accent-indigo);
  border-color: var(--accent-indigo);
  color: white;
}

.device-btn:hover:not(.active) {
  background: var(--bg-tertiary);
  border-color: var(--accent-indigo);
}

.preview-content {
  flex: 1;
  padding: 1rem;
  overflow: auto;
}

.preview-content iframe {
  width: 100%;
  height: 100%;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: white;
}

/* Device Responsive Sizing */
.preview-panel.device-tablet .preview-content iframe {
  max-width: 768px;
  margin: 0 auto;
}

.preview-panel.device-mobile .preview-content iframe {
  max-width: 375px;
  margin: 0 auto;
}

/* Status Bar */
.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  height: 2rem;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border-color);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.status-left, .status-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.sandbox-badge {
  background: var(--accent-yellow);
  color: var(--bg-primary);
  padding: 0.125rem 0.5rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.625rem;
}

/* Modals */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.modal.show {
  display: flex;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
}

.modal-content.large {
  max-width: 800px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

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

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
  line-height: 1;
  padding: 0;
}

.modal-close:hover {
  color: var(--accent-red);
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  flex: 1;
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input, .form-group textarea {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.75rem;
  border-radius: 6px;
  font-size: 0.875rem;
  font-family: var(--font-sans);
  transition: var(--transition);
}

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

.form-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  margin-top: 1.5rem;
}

.btn-primary, .btn-secondary, .btn-success {
  padding: 0.625rem 1.25rem;
  border: none;
  border-radius: 6px;
  font-size: 0.875rem;
  font-family: var(--font-sans);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

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

.btn-primary:hover {
  background: #5558e3;
}

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

.btn-secondary:hover {
  background: var(--bg-primary);
  border-color: var(--accent-indigo);
}

.btn-success {
  background: var(--accent-green);
  color: white;
}

.btn-success:hover {
  background: #0e9870;
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.75rem;
}

/* Backup List */
.backup-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.backup-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
}

.backup-info {
  flex: 1;
}

.backup-version {
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.backup-time {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

/* Diff Viewer */
.diff-container {
  margin-top: 1rem;
  max-height: 400px;
  overflow-y: auto;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 1rem;
}

.diff-viewer {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.5;
}

.diff-viewer > div {
  display: flex;
  gap: 1rem;
}

.diff-added {
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent-green);
}

.diff-removed {
  background: rgba(239, 68, 68, 0.1);
  color: var(--accent-red);
}

.diff-unchanged {
  color: var(--text-secondary);
}

.line-number {
  display: inline-block;
  width: 3rem;
  text-align: right;
  color: var(--text-tertiary);
  user-select: none;
}

.line-prefix {
  display: inline-block;
  width: 1rem;
  text-align: center;
}

.line-content {
  flex: 1;
  white-space: pre-wrap;
  word-break: break-all;
}

/* Push Info */
.push-info {
  padding: 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  margin-bottom: 1rem;
}

.push-paths {
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.push-paths > div {
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.push-paths strong {
  color: var(--text-primary);
  margin-right: 0.5rem;
}

/* Command Palette */
.command-palette .modal-content {
  max-width: 600px;
  padding: 0;
}

.command-search {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.command-search input {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.75rem;
  border-radius: 6px;
  font-size: 0.875rem;
  font-family: var(--font-sans);
}

.command-search input:focus {
  outline: none;
  border-color: var(--accent-indigo);
}

.command-list {
  max-height: 400px;
  overflow-y: auto;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.toast {
  padding: 1rem 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  min-width: 300px;
  opacity: 0;
  transform: translateX(400px);
  transition: var(--transition);
  font-size: 0.875rem;
}

.toast.show {
  opacity: 1;
  transform: translateX(0);
}

.toast-info {
  border-left: 3px solid var(--accent-indigo);
}

.toast-success {
  border-left: 3px solid var(--accent-green);
}

.toast-warning {
  border-left: 3px solid var(--accent-yellow);
}

.toast-error {
  border-left: 3px solid var(--accent-red);
}

/* Loading State */
.loading {
  text-align: center;
  color: var(--text-secondary);
  font-style: italic;
  padding: 2rem;
}

.error {
  color: var(--accent-red);
  padding: 1rem;
}

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

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

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

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-indigo);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal.show .modal-content {
  animation: fadeIn 0.2s ease-out;
}