/* ==========================================================================
   YS168 & Obsidian Style - Multi-Tab & Clipboard Actions Stylesheet
   ========================================================================== */

:root {
  /* Dark Theme Variables */
  --bg-main: #0f111a;
  --bg-sidebar: #161824;
  --bg-card: #202333;
  --bg-header: #161824;
  --bg-editor: #0f111a;
  --bg-gutter: #161824;
  
  --text-primary: #dcdeeb;
  --text-secondary: #9095b3;
  --text-muted: #646a8a;
  --text-gutter: #454a66;
  
  --primary-color: #a855f7; /* Obsidian Purple */
  --primary-hover: #c084fc;
  --primary-light: rgba(168, 85, 247, 0.15);
  
  --accent-color: #818cf8;
  --border-color: #2a2d42;
  --border-hover: #454a66;
  
  --tree-hover: #202333;
  --tree-active: rgba(168, 85, 247, 0.2);
  
  --danger-color: #f87171;
  --danger-hover: #ef4444;
  --warning-color: #f59e0b;
  --warning-hover: #d97706;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  --font-code: 'Fira Code', Consolas, Monaco, monospace;
}

body.theme-light {
  --bg-main: #f8fafc;
  --bg-sidebar: #ffffff;
  --bg-card: #f1f5f9;
  --bg-header: #ffffff;
  --bg-editor: #ffffff;
  --bg-gutter: #f8fafc;
  
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --text-gutter: #cbd5e1;
  
  --primary-color: #9333ea;
  --primary-hover: #a855f7;
  --primary-light: #f3e8ff;
  
  --border-color: #e2e8f0;
  --border-hover: #9333ea;
  
  --tree-hover: #f1f5f9;
  --tree-active: #f3e8ff;
  
  --danger-color: #ef4444;
  --danger-hover: #dc2626;
  --warning-color: #d97706;
  --warning-hover: #b45309;
}

/* Permission Control Rules */
body.mode-readonly .admin-only {
  display: none !important;
}

body.mode-readonly .tree-node-actions {
  display: none !important;
}

body.mode-readonly .tree-checkbox {
  display: none !important;
}

/* Accent Colors */
.obsidian-purple { color: #a855f7 !important; }
.obsidian-blue   { color: #38bdf8 !important; }
.obsidian-cyan   { color: #22d3ee !important; }
.obsidian-green  { color: #34d399 !important; }
.obsidian-yellow { color: #fbbf24 !important; }
.obsidian-orange { color: #fb923c !important; }
.obsidian-red    { color: #f87171 !important; }
.obsidian-pink   { color: #f472b6 !important; }

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.5;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Header Navigation */
.top-header {
  background-color: var(--bg-header);
  border-bottom: 1px solid var(--border-color);
  padding: 0.65rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo.obsidian-logo {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #7e22ce, #a855f7);
  color: white;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  box-shadow: 0 0 12px rgba(168, 85, 247, 0.35);
}

.brand-info h1 {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.2;
}

.brand-info p {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.search-box input {
  padding: 0.45rem 1.8rem 0.45rem 2.2rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-size: 0.85rem;
  outline: none;
  width: 160px;
  transition: all 0.2s ease;
}

.search-box input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px var(--primary-light);
  width: 220px;
}

.clear-btn {
  position: absolute;
  right: 0.5rem;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
}

.header-btn-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.badge-count {
  background-color: var(--danger-color);
  color: white;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.05rem 0.4rem;
  border-radius: 10px;
  margin-left: 0.2rem;
}

/* Notice Banner Bar */
.notice-bar {
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  padding: 0.45rem 1.25rem;
  font-size: 0.825rem;
  color: var(--text-primary);
}

.notice-content {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.85rem;
  font-size: 0.825rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) { background-color: var(--primary-hover); }

.btn-outline {
  background-color: var(--bg-card);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-outline:hover:not(:disabled) {
  background-color: var(--primary-light);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

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

.btn-warning:hover:not(:disabled) { background-color: var(--warning-hover); }

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

.btn-danger:hover:not(:disabled) { background-color: var(--danger-hover); }

.btn-sm { padding: 0.35rem 0.65rem; font-size: 0.785rem; }
.btn-xs { padding: 0.2rem 0.5rem; font-size: 0.725rem; }
.btn-group-sm { display: inline-flex; gap: 0.3rem; }

/* Workspace Layout */
.workspace-container {
  display: flex;
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* Sidebar Tree */
.sidebar {
  width: 320px;
  min-width: 220px;
  max-width: 550px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  user-select: none;
}

.sidebar-header {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.sidebar-actions { display: flex; gap: 0.4rem; }

.icon-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem 0.4rem;
  border-radius: var(--radius-sm);
}

.icon-btn:hover {
  color: var(--text-primary);
  background-color: var(--tree-hover);
}

.batch-bar {
  background-color: var(--primary-light);
  border-bottom: 1px solid var(--border-color);
  padding: 0.5rem 0.85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.batch-bar .badge {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary-color);
}

.batch-btns { display: flex; gap: 0.4rem; }

.file-tree-container {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem 0;
}

/* Tree Nodes Styling */
.tree-node { display: flex; flex-direction: column; }

.tree-item {
  display: flex;
  align-items: center;
  padding: 0.35rem 0.5rem;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-primary);
  gap: 0.35rem;
  border-radius: var(--radius-sm);
  margin: 0.05rem 0.35rem;
  transition: background-color 0.15s ease;
  position: relative;
}

.tree-item:hover { background-color: var(--tree-hover); }

.tree-item.active {
  background-color: var(--tree-active);
  color: var(--primary-color);
  font-weight: 600;
}

.tree-checkbox {
  width: 14px;
  height: 14px;
  accent-color: var(--primary-color);
  cursor: pointer;
}

.tree-chevron {
  width: 14px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.7rem;
  transition: transform 0.2s ease;
}

.tree-chevron.expanded { transform: rotate(90deg); }

.tree-icon {
  width: 18px;
  text-align: center;
  font-size: 0.9rem;
}

.tree-label {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tree-badge {
  font-size: 0.7rem;
  color: var(--text-muted);
  background-color: var(--bg-card);
  padding: 0.05rem 0.35rem;
  border-radius: 10px;
  border: 1px solid var(--border-color);
}

.tree-node-actions {
  display: none;
  align-items: center;
  gap: 0.2rem;
}

.tree-item:hover .tree-node-actions { display: flex; }

.tree-action-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.15rem 0.25rem;
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
}

.tree-action-btn:hover {
  color: var(--primary-color);
  background-color: var(--bg-card);
}

.tree-action-btn.delete-btn:hover { color: var(--danger-color); }

.tree-children {
  padding-left: 1rem;
  display: none;
}

.tree-children.expanded { display: block; }

.resizer {
  width: 4px;
  background-color: var(--border-color);
  cursor: col-resize;
  transition: background-color 0.2s ease;
}

.resizer:hover { background-color: var(--primary-color); }

/* Main Editor Area */
.main-editor-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-editor);
  overflow: hidden;
}

/* Multi-Tabs Navigation Bar */
.editor-tabs {
  background-color: var(--bg-sidebar);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  overflow-x: auto;
  user-select: none;
}

.tab {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  font-size: 0.825rem;
  color: var(--text-secondary);
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  transition: all 0.15s ease;
}

.tab:hover {
  background-color: var(--bg-card);
  color: var(--text-primary);
}

.tab.active {
  background-color: var(--bg-editor);
  color: var(--primary-color);
  border-bottom: 2px solid var(--primary-color);
  font-weight: 600;
}

.tab-close-btn {
  font-size: 0.75rem;
  color: var(--text-muted);
  border-radius: 50%;
  padding: 0.1rem 0.25rem;
  margin-left: 0.2rem;
  transition: all 0.15s ease;
}

.tab-close-btn:hover {
  background-color: rgba(239, 68, 68, 0.2);
  color: var(--danger-color);
}

.tab-dirty-dot {
  width: 7px;
  height: 7px;
  background-color: #f59e0b;
  border-radius: 50%;
  display: inline-block;
  margin-left: 0.2rem;
}

.editor-view {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Welcome Screen */
.welcome-box {
  max-width: 720px;
  margin: auto;
  text-align: center;
  padding: 2rem;
}

.welcome-icon { font-size: 3.5rem; margin-bottom: 1rem; }
.welcome-box h2 { font-size: 1.5rem; margin-bottom: 0.5rem; }
.welcome-box p { color: var(--text-secondary); margin-bottom: 2rem; font-size: 0.9rem; }

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

.feature-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.1rem;
  text-align: center;
}

.feature-card i { font-size: 1.5rem; margin-bottom: 0.4rem; }
.feature-card h3 { font-size: 0.85rem; margin-bottom: 0.2rem; }
.feature-card p { font-size: 0.75rem; color: var(--text-secondary); margin-bottom: 0; }

/* Editor Toolbar */
.editor-toolbar {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--bg-editor);
}

.file-path-breadcrumb {
  font-size: 0.875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.editor-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.status-badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

.status-badge.clean {
  background-color: rgba(16, 185, 129, 0.15);
  color: #10b981;
}

.status-badge.dirty {
  background-color: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
}

.preview-container {
  flex: 1;
  display: flex;
  background-color: var(--bg-editor);
  overflow: hidden;
  position: relative;
}

.editor-wrapper {
  flex: 1;
  display: flex;
  position: relative;
  overflow: hidden;
}

.line-numbers {
  width: 50px;
  background-color: var(--bg-gutter);
  border-right: 1px solid var(--border-color);
  color: var(--text-gutter);
  font-family: var(--font-code);
  font-size: 0.875rem;
  line-height: 1.6;
  padding: 0.85rem 0.5rem 0.85rem 0;
  text-align: right;
  user-select: none;
  overflow: hidden;
  box-sizing: border-box;
}

.code-textarea {
  flex: 1;
  background-color: transparent;
  color: var(--text-primary);
  font-family: var(--font-code);
  font-size: 0.875rem;
  line-height: 1.6;
  padding: 0.85rem 1rem;
  border: none;
  outline: none;
  resize: none;
  white-space: pre;
  overflow-x: auto;
  overflow-y: auto;
  box-sizing: border-box;
  tab-size: 2;
}

.markdown-preview-box {
  flex: 1;
  padding: 2rem 3rem;
  overflow-y: auto;
  line-height: 1.8;
  color: var(--text-primary);
  max-width: 900px;
  margin: 0 auto;
}

.markdown-preview-box h1, .markdown-preview-box h2, .markdown-preview-box h3 {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.4rem;
  margin-top: 1.5rem;
  margin-bottom: 0.8rem;
}

.markdown-preview-box pre {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  font-family: var(--font-code);
  font-size: 0.875rem;
  overflow-x: auto;
  margin: 1rem 0;
}

.pdf-iframe { width: 100%; height: 100%; border: none; }

.image-viewer-box {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.image-viewer-box img {
  max-width: 90%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.editor-statusbar {
  background-color: var(--bg-sidebar);
  border-top: 1px solid var(--border-color);
  padding: 0.35rem 1rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.status-left, .status-right { display: flex; align-items: center; gap: 1.25rem; }

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-box {
  background-color: var(--bg-sidebar);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 580px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  overflow: hidden;
}

.modal-box.modal-sm { max-width: 420px; }
.modal-box.modal-lg { max-width: 780px; }

.modal-header {
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 { font-size: 1rem; font-weight: 600; }

.close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
}

.modal-body { padding: 1.25rem; }

.form-group { margin-bottom: 1rem; }

.form-group label {
  display: block;
  font-size: 0.825rem;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-size: 0.875rem;
  outline: none;
}

.form-control:focus { border-color: var(--primary-color); }
.form-control-sm { padding: 0.25rem 0.5rem; font-size: 0.8rem; }

.modal-footer {
  padding: 0.85rem 1.25rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

.modal-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.modal-tab-btn {
  flex: 1;
  padding: 0.5rem 0.75rem;
  font-size: 0.825rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background-color: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.modal-tab-btn.active {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.upload-dropzone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  text-align: center;
  background-color: var(--bg-main);
  cursor: pointer;
  transition: all 0.25s ease;
}

.upload-dropzone:hover, .upload-dropzone.dragover {
  border-color: var(--primary-color);
  background-color: var(--primary-light);
}

.upload-icon { font-size: 2.5rem; margin-bottom: 0.5rem; }

.recycle-list-container {
  max-height: 380px;
  overflow-y: auto;
}

.recycle-item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.825rem;
  gap: 0.75rem;
}

.recycle-item-row:last-child { border-bottom: none; }

.recycle-info { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.recycle-name { font-weight: 600; color: var(--text-primary); }
.recycle-path { font-size: 0.75rem; color: var(--text-muted); }

.recycle-days {
  font-size: 0.75rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background-color: var(--primary-light);
  color: var(--primary-color);
  font-weight: 600;
}

.recycle-days.expired {
  background-color: rgba(239, 68, 68, 0.15);
  color: var(--danger-color);
}

.recycle-actions { display: flex; gap: 0.4rem; }

.link-input-group { display: flex; align-items: center; gap: 0.4rem; }

.properties-table { width: 100%; border-collapse: collapse; font-size: 0.825rem; }

.properties-table th {
  text-align: right;
  width: 32%;
  padding: 0.45rem 0.6rem;
  color: var(--text-secondary);
  font-weight: 500;
  border-bottom: 1px solid var(--border-color);
}

.properties-table td {
  text-align: left;
  padding: 0.45rem 0.6rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  word-break: break-all;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: #10b981;
  color: white;
  padding: 0.65rem 1.2rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.25s ease;
  z-index: 2000;
}

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

/* ==========================================================================
   Responsive & Polish Enhancements
   ========================================================================== */

/* Narrow screens: hide button labels, keep icons */
@media (max-width: 1100px) {
  .header-right { gap: 0.5rem; }
  .search-box input { width: 130px; }
  .search-box input:focus { width: 170px; }
  .btn-label { display: none; }
  .editor-actions .status-badge { display: none; }
  .editor-statusbar .status-left span:nth-child(3) { display: none; }
  .brand-info p { display: none; }
}

@media (max-width: 900px) {
  .top-header { padding: 0.5rem 0.75rem; gap: 0.5rem; }
  .brand-info h1 { font-size: 0.95rem; }
  .search-box { display: none; }
  .editor-toolbar { flex-wrap: wrap; gap: 0.5rem; }
  .file-path-breadcrumb { flex: 1 1 auto; min-width: 0; }
  .editor-actions { flex-wrap: wrap; }
  .editor-statusbar .status-right span:nth-child(2),
  .editor-statusbar .status-right span:nth-child(3) { display: none; }
}

/* Tablet & below: stack sidebar above editor */
@media (max-width: 768px) {
  .workspace-container { flex-direction: column; }
  .sidebar { width: 100%; max-width: 100%; height: 220px; min-height: 160px; }
  .resizer { display: none; }
  .welcome-box { padding: 1.2rem; }
  .markdown-preview-box { padding: 1rem 1.2rem; }
  .modal-overlay { padding: 0.75rem; }
  .modal-box { max-height: 92vh; overflow-y: auto; }
  .storage-source-badge { font-size: 0.75rem; padding: 0.3rem 0.6rem; }
}

/* Mobile */
@media (max-width: 520px) {
  .top-header { flex-wrap: wrap; }
  .header-btn-group { flex-wrap: wrap; }
  .brand { flex: 1 1 auto; }
  .welcome-features { grid-template-columns: 1fr 1fr; gap: 0.6rem; }
  .feature-card { padding: 0.8rem; }
  .welcome-box h2 { font-size: 1.2rem; }
  .editor-statusbar { flex-wrap: wrap; gap: 0.3rem; }
  .editor-statusbar .status-right { gap: 0.5rem; }
  .modal-footer { flex-wrap: wrap; }
  .modal-tabs { flex-direction: column; }
  .modal-tab-btn { flex: 1 1 auto; }
  .batch-bar { flex-wrap: wrap; gap: 0.4rem; }
  .tree-item { padding: 0.4rem 0.45rem; }
}

/* Scrollbar styling */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background-color: var(--border-hover);
  border-radius: 6px;
  border: 2px solid transparent;
  background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover { background-color: var(--primary-color); }

/* Focus & selection polish */
::selection { background-color: var(--primary-color); color: #fff; }

.btn:active:not(:disabled) { transform: translateY(1px); }

.tab { transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease; }
.feature-card { transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease; }
.feature-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary-color);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.modal-box {
  animation: modalIn 0.18s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* K-Vault Style Storage Source Badge & Pulsing Green Light */
.storage-source-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.8rem;
  background: var(--bg-card, rgba(255, 255, 255, 0.05));
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.12));
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main, #e2e8f0);
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.storage-source-badge:hover {
  background: var(--bg-main, rgba(255, 255, 255, 0.1));
  border-color: rgba(16, 185, 129, 0.5);
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.2);
}

.status-pulse-dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  margin-right: 8px;
  position: relative;
  flex-shrink: 0;
}

.status-pulse-dot.green {
  background-color: #10b981;
  box-shadow: 0 0 8px #10b981;
}

.status-pulse-dot.green::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  border-radius: 50%;
  border: 2px solid #10b981;
  animation: pulseRing 2s infinite ease-out;
}

.status-pulse-dot.red {
  background-color: #ef4444;
  box-shadow: 0 0 8px #ef4444;
}

.status-pulse-dot.yellow {
  background-color: #f59e0b;
  box-shadow: 0 0 8px #f59e0b;
}

@keyframes pulseRing {
  0% { transform: scale(0.8); opacity: 0.8; }
  100% { transform: scale(2.4); opacity: 0; }
}

/* Storage Backend Cards in Switcher Modal */
.storage-backend-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.storage-backend-card {
  padding: 1rem 1.1rem;
  background: var(--bg-card, rgba(255, 255, 255, 0.03));
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.08));
  border-radius: 12px;
  transition: all 0.25s ease;
}

.storage-backend-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.storage-backend-card.active {
  border-color: #10b981;
  background: rgba(16, 185, 129, 0.06);
  box-shadow: 0 0 16px rgba(16, 185, 129, 0.12);
}

.backend-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.45rem;
}

.backend-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
}

.backend-status-badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-weight: 600;
}

.backend-status-badge.green {
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
  background: rgba(16, 185, 129, 0.12);
}

.backend-status-badge.red {
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
  background: rgba(239, 68, 68, 0.12);
}

.backend-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.8rem;
  line-height: 1.4;
}

.backend-actions {
  display: flex;
  gap: 0.5rem;
}

/* Custom Secondary Dropdown Menu */
.custom-dropdown {
  position: relative;
  display: inline-block;
}

.custom-dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 0.4rem;
  min-width: 200px;
  background: var(--bg-card, #1e1e2e);
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.12));
  border-radius: var(--radius-md, 8px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(12px);
  z-index: 1000;
  padding: 0.4rem 0;
}

.custom-dropdown-menu .dropdown-item {
  width: 100%;
  text-align: left;
  padding: 0.65rem 1rem;
  background: transparent;
  border: none;
  color: var(--text-color, #e0e0e0);
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: background 0.15s ease;
}

.custom-dropdown-menu .dropdown-item:hover {
  background: var(--bg-hover, rgba(255, 255, 255, 0.08));
  color: var(--primary-color, #a78bfa);
}

/* ==========================================================================
   Theme & Color Customization
   ========================================================================== */

.theme-section {
  margin-bottom: 1.2rem;
}

.theme-section-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary, #9095b3);
  margin-bottom: 0.5rem;
}

.theme-mode-row {
  display: flex;
  gap: 0.5rem;
}

.theme-mode-btn {
  flex: 1;
  justify-content: center;
  border-color: var(--border-color, #2a2d42);
  background: var(--bg-card, #202333);
}

.theme-mode-btn.active {
  border-color: var(--primary-color, #a855f7);
  background: var(--primary-light, rgba(168, 85, 247, 0.15));
  color: var(--primary-color, #a855f7);
  font-weight: 700;
}

.theme-palette-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 0.6rem;
}

.theme-swatch {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  padding: 0.6rem 0.6rem 0.5rem;
  background: var(--bg-card, #202333);
  border: 2px solid var(--border-color, #2a2d42);
  border-radius: var(--radius-md, 8px);
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.theme-swatch:hover {
  transform: translateY(-2px);
  border-color: var(--border-hover, #454a66);
}

.theme-swatch.active {
  border-color: var(--primary-color, #a855f7);
}

.theme-swatch-colorbar {
  width: 100%;
  height: 22px;
  border-radius: var(--radius-sm, 4px);
}

.theme-swatch-name {
  font-size: 0.72rem;
  color: var(--text-secondary, #9095b3);
  text-align: left;
}

.theme-swatch .fa-check {
  position: absolute;
  top: 0.45rem;
  right: 0.45rem;
  font-size: 0.7rem;
  color: #fff;
  background: var(--primary-color, #a855f7);
  border-radius: 50%;
  padding: 0.2rem;
}

.theme-custom-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

#theme-custom-color {
  width: 42px;
  height: 30px;
  padding: 2px;
  border: 1px solid var(--border-color, #2a2d42);
  border-radius: var(--radius-sm, 4px);
  background: var(--bg-card, #202333);
  cursor: pointer;
}

#theme-custom-hex {
  font-family: var(--font-code, 'Fira Code', Consolas, monospace);
  font-size: 0.8rem;
  color: var(--text-secondary, #9095b3);
  min-width: 4.5rem;
}

#theme-reset-btn {
  margin-left: auto;
}