/* ==========================================================================
   Tekniska Ritningar - Lucidchart Style Document Hub & Editor Host
   ========================================================================== */

:root {
  --bg-main: #0b0f19;
  --bg-sidebar: #0f172a;
  --bg-card: #1e293b;
  --bg-card-hover: #273548;
  --bg-input: #0f172a;
  --border-color: #334155;
  --border-light: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --primary-light: rgba(2, 132, 199, 0.15);
  --accent: #38bdf8;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --danger-light: rgba(239, 68, 68, 0.15);
  --success: #10b981;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

/* ==========================================================================
   App Shell & View Switching
   ========================================================================== */
#hubView {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

#editorView {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  background-color: #0f172a;
  visibility: hidden;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease, visibility 0.15s ease;
}

#editorView.active {
  visibility: visible;
  pointer-events: auto;
  opacity: 1;
}

/* ==========================================================================
   Hub Header
   ========================================================================== */
.hub-header {
  height: 64px;
  background-color: var(--bg-sidebar);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  flex-shrink: 0;
  z-index: 10;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 18px;
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.4);
}

.brand-title {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.brand-tag {
  font-size: 11px;
  background-color: var(--primary-light);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: 12px;
  border: 1px solid rgba(56, 189, 248, 0.3);
  font-weight: 500;
}

.search-section {
  flex: 1;
  max-width: 440px;
  margin: 0 32px;
  position: relative;
}

.search-input-wrapper {
  position: relative;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 8px 12px 8px 38px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

.search-input::placeholder {
  color: var(--text-muted);
}

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

.status-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
  background-color: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 4px 10px;
  border-radius: 20px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--success);
  box-shadow: 0 0 6px var(--success);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  text-decoration: none;
  user-select: none;
}

.btn-primary {
  background-color: var(--primary);
  color: white;
  border-color: var(--primary);
  box-shadow: 0 2px 6px rgba(2, 132, 199, 0.3);
}

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

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

.btn-secondary:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--text-muted);
}

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

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

.btn-icon {
  padding: 8px;
  border-radius: var(--radius-sm);
  background-color: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
}

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

/* ==========================================================================
   Hub Body & Sidebar
   ========================================================================== */
.hub-body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.hub-sidebar {
  width: 260px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow-y: auto;
  padding: 20px 16px;
}

.sidebar-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  padding: 0 8px;
}

.sidebar-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
}

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

.nav-item.active {
  background-color: var(--primary-light);
  color: var(--accent);
  font-weight: 500;
}

.nav-item-left {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-count {
  font-size: 11px;
  background-color: rgba(255, 255, 255, 0.08);
  padding: 2px 6px;
  border-radius: 10px;
  color: var(--text-muted);
}

.tree-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 4px;
}

.tree-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13.5px;
  cursor: pointer;
  transition: var(--transition);
}

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

.tree-item.active {
  background-color: var(--primary-light);
  color: var(--accent);
  font-weight: 500;
}

/* ==========================================================================
   Main Content Area
   ========================================================================== */
.hub-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: 28px 32px;
}

.main-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 500;
}

.breadcrumb-item {
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.breadcrumb-item:hover {
  color: var(--accent);
}

.breadcrumb-item.active {
  color: var(--text-primary);
  font-weight: 600;
  cursor: default;
}

.breadcrumb-sep {
  color: var(--text-muted);
  font-size: 12px;
}

.toolbar-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sort-select {
  background-color: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  outline: none;
  cursor: pointer;
}

/* ==========================================================================
   Folders Grid
   ========================================================================== */
.section-heading {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.folders-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 28px;
}

.folder-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: var(--transition);
}

.folder-card:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--text-muted);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.folder-card-left {
  display: flex;
  align-items: center;
  gap: 12px;
  overflow: hidden;
}

.folder-icon {
  color: var(--accent);
  font-size: 20px;
  flex-shrink: 0;
}

.folder-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.folder-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.folder-count {
  font-size: 12px;
  color: var(--text-muted);
}

/* ==========================================================================
   Documents Grid
   ========================================================================== */
.documents-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.doc-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.doc-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.doc-preview-wrapper {
  height: 160px;
  background-color: #030712;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.doc-preview-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.3s ease;
  padding: 8px;
}

.doc-card:hover .doc-preview-img {
  transform: scale(1.03);
}

.doc-details {
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.doc-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.doc-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.doc-menu-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.doc-menu-btn:hover {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.1);
}

.doc-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}

/* Context Menu */
.context-menu {
  position: fixed;
  background-color: #1e293b;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  min-width: 170px;
}

.context-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13.5px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
}

.context-menu-item:hover {
  background-color: var(--bg-card-hover);
  color: var(--accent);
}

.context-menu-item.danger:hover {
  background-color: var(--danger-light);
  color: var(--danger);
}

.context-menu-divider {
  height: 1px;
  background-color: var(--border-color);
  margin: 4px 0;
}

/* Empty state */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  text-align: center;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 48px;
  color: var(--border-color);
  margin-bottom: 16px;
}

.empty-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.empty-desc {
  font-size: 14px;
  max-width: 400px;
  margin-bottom: 24px;
}

/* ==========================================================================
   Editor View & Lucidchart-style Topbar
   ========================================================================== */
.editor-topbar {
  height: 52px;
  background-color: #0f172a;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  flex-shrink: 0;
  z-index: 50;
}

.editor-topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.back-to-docs-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.back-to-docs-btn:hover {
  background-color: var(--bg-card);
  color: var(--text-primary);
}

.title-container {
  display: flex;
  align-items: center;
  gap: 8px;
}

.editor-title-input {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  outline: none;
  transition: var(--transition);
}

.editor-title-input:hover {
  border-color: var(--border-color);
  background-color: rgba(255, 255, 255, 0.05);
}

.editor-title-input:focus {
  border-color: var(--accent);
  background-color: var(--bg-card);
}

.folder-badge {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.editor-topbar-center {
  display: flex;
  align-items: center;
}

.sync-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
  padding: 4px 10px;
  border-radius: 12px;
  background-color: rgba(255, 255, 255, 0.04);
}

.sync-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--success);
}

.sync-dot.saving {
  background-color: #f59e0b;
  animation: pulse 1s infinite;
}

.editor-topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.export-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 6px;
  background-color: #1e293b;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  display: none;
  flex-direction: column;
  min-width: 180px;
  z-index: 100;
}

.dropdown-menu.show {
  display: flex;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13.5px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
}

.dropdown-item:hover {
  background-color: var(--bg-card-hover);
  color: var(--accent);
}

.editor-frame-container {
  flex: 1;
  width: 100%;
  height: calc(100vh - 52px);
  position: relative;
}

#editorIframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

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

.modal-backdrop.show {
  display: flex;
}

.modal-content {
  background-color: var(--bg-sidebar);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 460px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: modalIn 0.15s ease-out;
}

@keyframes modalIn {
  from {
    transform: scale(0.96);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 18px;
  padding: 4px;
}

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

.modal-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

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

.form-input:focus, .form-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

.modal-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  background-color: rgba(0, 0, 0, 0.2);
}

/* ==========================================================================
   Toasts
   ========================================================================== */
#toastContainer {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 3000;
  pointer-events: none;
}

.toast {
  background-color: #1e293b;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  color: var(--text-primary);
  font-size: 14px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  pointer-events: auto;
  animation: toastIn 0.2s ease-out;
  max-width: 350px;
}

.toast.success {
  border-left: 4px solid var(--success);
}

.toast.error {
  border-left: 4px solid var(--danger);
}

@keyframes toastIn {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ==========================================================================
   User Profile Header & Menu
   ========================================================================== */
.user-profile-section {
  position: relative;
  display: flex;
  align-items: center;
}

.user-profile-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  padding: 5px 12px 5px 6px;
  border-radius: 20px;
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition);
}

.user-profile-btn:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--accent);
}

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  text-transform: uppercase;
}

.user-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  max-width: 120px;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
}

.profile-chevron {
  font-size: 10px;
  color: var(--text-muted);
}

.user-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 220px;
  background-color: var(--bg-sidebar);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 100;
  display: none;
  flex-direction: column;
  padding: 6px 0;
}

.user-menu.show {
  display: flex;
}

.user-menu-info {
  padding: 12px 16px;
}

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

.user-menu-email {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
  word-break: break-all;
}

.badge-role {
  display: inline-block;
  margin-top: 6px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  background-color: rgba(56, 189, 248, 0.15);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
}

.menu-divider {
  height: 1px;
  background-color: var(--border-color);
  margin: 6px 0;
}

/* ==========================================================================
   Auth Modal & Forms
   ========================================================================== */
.auth-modal-content {
  max-width: 440px;
  background-color: #0d1527;
  border: 1px solid #1e293b;
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}

.auth-modal-header {
  padding: 24px 24px 16px;
  border-bottom: none;
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.auth-brand .brand-icon {
  width: 42px;
  height: 42px;
  font-size: 20px;
  flex-shrink: 0;
}

.auth-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.auth-tabs-container {
  padding: 0 24px 8px;
  border-bottom: 1px solid var(--border-color);
}

.auth-tabs {
  display: flex;
  gap: 6px;
  background-color: var(--bg-main);
  padding: 4px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.auth-tab {
  flex: 1;
  padding: 8px 12px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

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

.auth-tab.active {
  background-color: var(--bg-card);
  color: var(--text-primary);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.auth-modal-body {
  padding: 20px 24px 24px;
}

.auth-alert {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
  line-height: 1.4;
}

.auth-alert.error {
  background-color: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #fca5a5;
}

.auth-alert.info {
  background-color: rgba(56, 189, 248, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.4);
  color: #7dd3fc;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.auth-submit-row {
  margin-top: 6px;
}

.btn-block {
  width: 100%;
  justify-content: center;
  padding: 11px 16px;
  font-size: 14px;
  font-weight: 600;
}

.form-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ==========================================================================
   Admin Modal & User Table
   ========================================================================== */
.admin-modal-content {
  max-width: 840px;
  background-color: #0d1527;
  border: 1px solid #1e293b;
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}

.modal-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 3px;
}

.admin-stats-bar {
  display: flex;
  gap: 20px;
  background-color: var(--bg-main);
  padding: 12px 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin-bottom: 16px;
}

.admin-stat-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}

.stat-label {
  color: var(--text-secondary);
}

.stat-value {
  font-weight: 700;
  font-size: 14px;
}

.text-success {
  color: #4ade80;
}

.text-danger {
  color: #f87171;
}

.admin-table-container {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-card);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.admin-table th {
  background-color: rgba(15, 23, 42, 0.6);
  padding: 10px 14px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.admin-table td {
  padding: 12px 14px;
  border-bottom: 1px solid rgba(51, 65, 85, 0.5);
  color: var(--text-primary);
  vertical-align: middle;
}

.admin-table tr:last-child td {
  border-bottom: none;
}

.admin-table tr:hover td {
  background-color: rgba(255, 255, 255, 0.02);
}

.user-cell {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-cell-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
}

.user-cell-names {
  display: flex;
  flex-direction: column;
}

.user-cell-name {
  font-weight: 600;
  color: var(--text-primary);
}

.user-cell-username {
  font-size: 11px;
  color: var(--text-muted);
}

.badge-status {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
}

.badge-status.active {
  background-color: rgba(34, 197, 94, 0.15);
  color: #4ade80;
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.badge-status.blocked {
  background-color: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-admin-role {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  background-color: rgba(56, 189, 248, 0.15);
  color: var(--accent);
}

.badge-user-role {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
  background-color: rgba(148, 163, 184, 0.12);
  color: var(--text-secondary);
}

.table-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.btn-xs {
  padding: 4px 10px;
  font-size: 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.btn-toggle-block {
  background-color: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.4);
  color: #fca5a5;
}

.btn-toggle-block:hover {
  background-color: rgba(239, 68, 68, 0.3);
}

.btn-toggle-activate {
  background-color: rgba(34, 197, 94, 0.15);
  border-color: rgba(34, 197, 94, 0.4);
  color: #86efac;
}

.btn-toggle-activate:hover {
  background-color: rgba(34, 197, 94, 0.3);
}

.btn-delete-user {
  background-color: rgba(239, 68, 68, 0.1);
  border-color: transparent;
  color: #fca5a5;
}

.btn-delete-user:hover {
  background-color: rgba(239, 68, 68, 0.25);
  border-color: rgba(239, 68, 68, 0.5);
}

.btn-xs:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

/* ==========================================================================
   Mermaid Modal & Code Editor Styling
   ========================================================================== */
.mermaid-modal-content {
  width: 740px;
  max-width: 95vw;
}

.new-doc-modal-content {
  width: 560px;
  max-width: 95vw;
}

.modal-header-with-badge {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mermaid-badge-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.2), rgba(99, 102, 241, 0.25));
  border: 1px solid rgba(236, 72, 153, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.mermaid-controls-row {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 14px;
}

@media (max-width: 640px) {
  .mermaid-controls-row {
    flex-direction: column;
    gap: 10px;
  }
}

.flex-1 {
  flex: 1;
}

.mode-selection {
  min-width: 260px;
}

.radio-toggle-group {
  display: flex;
  gap: 12px;
  margin-top: 6px;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

.radio-label input[type="radio"] {
  accent-color: var(--primary);
  cursor: pointer;
}

.radio-label:hover {
  color: var(--text-primary);
}

.label-with-hint {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 6px;
}

.hint-text {
  font-size: 11px;
  color: var(--text-muted);
}

.code-editor-textarea {
  font-family: 'JetBrains Mono', 'Fira Code', Menlo, Monaco, Consolas, 'Courier New', monospace;
  font-size: 13px;
  line-height: 1.55;
  color: #e2e8f0;
  background-color: #0b1120;
  border: 1px solid #1e293b;
  border-radius: var(--radius-sm);
  padding: 12px;
  width: 100%;
  resize: vertical;
  tab-size: 2;
  white-space: pre;
  overflow-x: auto;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.4);
}

.code-editor-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.25), inset 0 2px 4px rgba(0, 0, 0, 0.4);
}

.mermaid-info-box {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background-color: rgba(14, 165, 233, 0.08);
  border: 1px solid rgba(14, 165, 233, 0.2);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-top: 14px;
  font-size: 12px;
  color: #94a3b8;
  line-height: 1.5;
}

.mermaid-info-box .info-icon {
  font-size: 16px;
  flex-shrink: 0;
  margin-top: 1px;
}

/* Tab button group in modals */
.tab-group {
  display: flex;
  background-color: #0f172a;
  padding: 3px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  gap: 2px;
}

.tab-btn {
  flex: 1;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

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

.tab-btn.active {
  background-color: var(--surface);
  color: var(--text-primary);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

#editorMermaidBtn {
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.15), rgba(99, 102, 241, 0.15));
  border-color: rgba(236, 72, 153, 0.35);
  color: #f472b6;
}

#editorMermaidBtn:hover {
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.25), rgba(99, 102, 241, 0.25));
  border-color: rgba(236, 72, 153, 0.6);
  color: #fbcfe8;
}

/* ==========================================================================
   Import Modal (Lucidchart, Visio, Draw.io)
   ========================================================================== */
.import-modal-content {
  max-width: 620px;
  background-color: var(--bg-sidebar);
}

.import-badge-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.2), rgba(99, 102, 241, 0.25));
  border: 1px solid rgba(14, 165, 233, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.import-dropzone {
  border: 2px dashed rgba(56, 189, 248, 0.35);
  border-radius: var(--radius-md);
  background-color: rgba(14, 165, 233, 0.03);
  padding: 24px 16px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.import-dropzone:hover,
.import-dropzone.dragover {
  border-color: var(--accent);
  background-color: rgba(14, 165, 233, 0.08);
  transform: translateY(-2px);
}

.dropzone-icon {
  font-size: 36px;
  margin-bottom: 8px;
}

.dropzone-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.dropzone-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.format-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-top: 12px;
}

.badge-format {
  font-size: 10px;
  font-family: 'JetBrains Mono', monospace;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 2px 8px;
  border-radius: 4px;
}

.badge-format.highlight {
  background-color: rgba(14, 165, 233, 0.15);
  border-color: rgba(56, 189, 248, 0.4);
  color: var(--accent);
  font-weight: 600;
}

.import-selection-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.import-files-count {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.btn-link {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 12px;
  cursor: pointer;
  padding: 0;
}

.btn-link:hover {
  text-decoration: underline;
}

.import-file-list {
  max-height: 130px;
  overflow-y: auto;
  background-color: #0b1120;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.import-file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  padding: 4px 8px;
  background-color: rgba(255, 255, 255, 0.02);
  border-radius: 4px;
}

.import-file-name {
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.import-file-size {
  font-size: 11px;
  color: var(--text-muted);
  margin-left: 12px;
  flex-shrink: 0;
}

.import-options-row {
  margin-top: 12px;
  display: flex;
  gap: 16px;
  align-items: center;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

.checkbox-label input[type="checkbox"] {
  accent-color: var(--primary);
  cursor: pointer;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.progress-percent {
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
}

.progress-bar-track {
  width: 100%;
  height: 8px;
  background-color: #0f172a;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width 0.2s ease;
  border-radius: 4px;
}

.progress-current-file {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 6px;
  font-family: 'JetBrains Mono', monospace;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.import-results-details {
  max-height: 130px;
  overflow-y: auto;
  font-size: 12px;
  margin-top: 8px;
  padding: 6px 10px;
  background-color: #0b1120;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.import-result-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: 'JetBrains Mono', monospace;
}

.import-help-box {
  margin-top: 14px;
  background-color: rgba(14, 165, 233, 0.05);
  border: 1px solid rgba(14, 165, 233, 0.2);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}

.help-box-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.help-box-body {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.55;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.help-box-body p {
  margin: 0;
}

.help-box-body code {
  font-family: 'JetBrains Mono', monospace;
  background-color: rgba(255, 255, 255, 0.08);
  padding: 1px 4px;
  border-radius: 3px;
  color: var(--accent);
}