/* ============================================================
   CeramicGPT Admin Dashboard Stylesheet
   Design: High-tech glassmorphism + sleek control panel
   ============================================================ */

.admin-body {
  background: var(--content-bg);
  color: var(--text-primary);
  display: flex;
  min-height: 100vh;
}

/* --- Admin Sidebar --- */
.admin-sidebar {
  width: 280px;
  min-width: 280px;
  height: 100vh;
  position: sticky;
  top: 0;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--sidebar-border);
  display: flex;
  flex-direction: column;
  z-index: 100;
}

.admin-nav {
  flex: 1;
  overflow-y: auto;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-group-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 12px 10px 4px;
}

.admin-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--sidebar-text);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  text-align: left;
  width: 100%;
}

.admin-nav-item:hover {
  background: var(--sidebar-hover);
  color: var(--sidebar-text-active);
}

.admin-nav-item.active {
  background: var(--sidebar-active);
  color: var(--accent);
  border-color: rgba(0, 212, 170, 0.2);
  font-weight: 600;
}

.admin-nav-item .badge {
  margin-left: auto;
  background: var(--sidebar-section-bg);
  border: 1px solid var(--sidebar-border);
  color: var(--text-muted);
  font-size: 0.7rem;
  padding: 1px 7px;
  border-radius: 10px;
}

.tree-structure-hint {
  background: rgba(0, 0, 0, 0.2);
  border: 1px dashed var(--sidebar-border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin: 4px 6px;
  font-size: 0.74rem;
  color: var(--sidebar-text);
  line-height: 1.8;
}

.tree-node-item {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* --- Admin Main Area --- */
.admin-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow-y: auto;
}

.admin-workspace {
  flex: 1;
  padding: 24px 32px 40px;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

.admin-view {
  display: none;
  animation: fadeIn 0.3s ease;
}

.admin-view.active {
  display: block;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #00d4aa 0%, #0ea5e9 100%);
  color: #0d1117;
  box-shadow: 0 2px 10px rgba(0, 212, 170, 0.25);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0, 212, 170, 0.4);
}

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

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

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.3);
  color: #ef4444;
}

.btn-danger:hover {
  background: #ef4444;
  color: #fff;
}

.btn-sm {
  padding: 4px 10px;
  font-size: 0.78rem;
}

.admin-quick-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 0, 0, 0.2);
  padding: 3px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.admin-quick-tab {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 5px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition);
}

.admin-quick-tab:hover {
  color: var(--text-primary);
  background: var(--sidebar-hover);
}

.admin-quick-tab.active {
  background: var(--sidebar-active);
  color: var(--accent);
  font-weight: 600;
}
.admin-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}

/* --- Cards & Tables --- */
.admin-card {
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

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

.admin-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-heading);
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.85rem;
}

.admin-table th {
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.15);
  color: var(--text-muted);
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.5px;
}

.admin-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
  vertical-align: middle;
}

.admin-table tr:hover td {
  background: var(--sidebar-hover);
}

.text-right { text-align: right; }

/* Dashboard Banner */
.dashboard-banner {
  background: linear-gradient(135deg, rgba(0, 212, 170, 0.08) 0%, rgba(14, 165, 233, 0.08) 100%);
  border: 1px solid var(--tag-border);
  border-radius: var(--radius);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.dashboard-banner-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.category-summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  padding: 20px;
}

.category-summary-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  transition: all var(--transition);
}

.category-summary-card:hover {
  background: var(--sidebar-hover);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ============================================================
   5-DIMENSION CONTENT EDITOR LAYOUT
   ============================================================ */
.content-editor-layout {
  display: flex;
  gap: 20px;
  height: calc(100vh - 150px);
  min-height: 600px;
}

.content-mat-sidebar {
  width: 260px;
  min-width: 260px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.content-mat-search {
  padding: 12px;
  border-bottom: 1px solid var(--border);
}

.content-mat-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.content-mat-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.82rem;
  color: var(--sidebar-text);
  transition: all var(--transition);
  margin-bottom: 2px;
}

.content-mat-item:hover {
  background: var(--sidebar-hover);
  color: var(--sidebar-text-active);
}

.content-mat-item.active {
  background: var(--sidebar-active);
  color: var(--accent);
  font-weight: 600;
  border-left: 3px solid var(--accent);
}

.content-mat-workspace {
  flex: 1;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px 28px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.content-target-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 18px;
}

.content-target-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.content-target-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-heading);
}

.content-target-sub {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.dimension-meta-card {
  background: rgba(0, 0, 0, 0.15);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.dim-meta-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 2px;
}

.dim-meta-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.subsections-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.subsections-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.subsection-admin-card {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: all var(--transition);
}

.subsection-admin-card:hover {
  border-color: var(--border-strong);
}

.subsection-admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border);
}

.subsection-admin-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-heading);
  display: flex;
  align-items: center;
  gap: 8px;
}

.subsection-admin-body {
  padding: 14px 16px;
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--text-primary);
}

.subsection-admin-body p {
  margin-bottom: 8px;
}
.subsection-admin-body p:last-child { margin-bottom: 0; }

.sub-refs-list {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--border);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ============================================================
   MODALS & FORMS
   ============================================================ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-backdrop.active {
  display: flex;
  animation: fadeIn 0.2s ease;
}

.admin-modal {
  background: var(--card-bg-solid);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  width: 100%;
  max-width: 580px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  animation: fadeInUp 0.3s ease;
  overflow: hidden;
}

.admin-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 22px;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.1);
}

.admin-modal-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-heading);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
}

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

.admin-modal-body {
  padding: 20px 22px;
  overflow-y: auto;
  flex: 1;
}

.admin-modal-footer {
  padding: 14px 22px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  background: rgba(0, 0, 0, 0.1);
}

/* Form controls */
.form-group {
  margin-bottom: 16px;
}

.form-group:last-child { margin-bottom: 0; }

.form-row {
  display: flex;
  gap: 12px;
}

.flex-1 { flex: 1; }

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 8px 12px;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.85rem;
  outline: none;
  transition: all var(--transition);
  font-family: inherit;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: rgba(0, 0, 0, 0.35);
}

.form-textarea {
  resize: vertical;
  line-height: 1.6;
}

/* Dynamic Rows (Quick Facts & References) */
.dynamic-row {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
  align-items: center;
}

.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
  cursor: pointer;
  flex-shrink: 0;
  font-size: 1rem;
}

.btn-icon:hover {
  background: #ef4444;
  color: #fff;
}

/* Toast Notification */
.admin-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  background: var(--card-bg-solid);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 0.85rem;
  box-shadow: var(--shadow-lg);
  z-index: 9999;
  display: none;
  animation: fadeInUp 0.3s ease;
}

.admin-toast.active { display: block; }
.admin-toast.success { border-color: var(--accent); }
.admin-toast.error { border-color: #ef4444; color: #ef4444; }

/* ============================================================
   LOGIN GATE
   ============================================================ */
.admin-body.admin-locked {
  overflow: hidden;
}

.admin-login-gate {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background:
    radial-gradient(ellipse at top, rgba(0, 212, 170, 0.12), transparent 55%),
    radial-gradient(ellipse at bottom, rgba(14, 165, 233, 0.1), transparent 50%),
    var(--content-bg);
}

.admin-login-card {
  width: 100%;
  max-width: 400px;
  background: var(--card-bg-solid);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 32px 28px 24px;
  box-shadow: var(--shadow-lg);
}

.admin-login-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 14px;
}

.admin-login-title {
  text-align: center;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 6px;
}

.admin-login-desc {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 22px;
}

.admin-login-error {
  margin-top: 8px;
  padding: 8px 12px;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  border-radius: var(--radius-sm);
  color: #ef4444;
  font-size: 0.82rem;
}

.admin-login-back {
  display: block;
  text-align: center;
  margin-top: 18px;
  color: var(--text-muted);
  font-size: 0.82rem;
  text-decoration: none;
}

.admin-login-back:hover { color: var(--accent); }

.admin-app-shell {
  display: flex;
  width: 100%;
  min-height: 100vh;
  flex: 1;
}

/* ============================================================
   MOBILE RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  #mobile-sidebar-toggle { display: inline-flex !important; }

  .admin-body {
    display: block;
  }

  .admin-app-shell {
    display: flex;
    flex-direction: column;
    width: 100%;
  }

  .admin-sidebar {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(85vw, 300px);
    z-index: 999;
    box-shadow: var(--shadow-lg);
  }

  .admin-sidebar.mobile-open {
    display: flex;
  }

  .admin-sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 998;
  }

  .admin-sidebar-backdrop.visible {
    display: block;
  }

  .admin-main {
    width: 100%;
    height: auto;
    min-height: 100vh;
  }

  .admin-main > .top-bar {
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "title actions"
      "tabs tabs";
    align-items: center;
    gap: 8px;
    height: auto;
    min-height: var(--header-height);
    padding: 10px 12px;
    padding-top: max(10px, env(safe-area-inset-top));
  }

  .admin-main > .top-bar > div:first-child {
    grid-area: title;
    min-width: 0;
  }

  .admin-quick-nav {
    grid-area: tabs;
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    flex-wrap: nowrap;
    justify-content: flex-start;
  }

  .admin-quick-nav::-webkit-scrollbar { display: none; }

  .admin-quick-tab {
    flex-shrink: 0;
    white-space: nowrap;
    font-size: 0.75rem;
    padding: 6px 10px;
  }

  .admin-main > .top-bar .top-bar-actions {
    grid-area: actions;
    justify-self: end;
  }

  .btn-text-desktop { display: none; }

  #page-title {
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .admin-workspace {
    padding: 14px 12px 28px;
    max-width: 100%;
  }

  /* 仪表盘横幅：避免标题竖排 */
  .dashboard-banner {
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
    padding: 18px 16px;
  }

  .dashboard-banner > div:first-child {
    min-width: 0;
    width: 100%;
  }

  .dashboard-banner .welcome-hero-title {
    font-size: 1.25rem !important;
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    word-break: break-word;
    white-space: normal;
    line-height: 1.4;
  }

  .dashboard-banner-actions {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .dashboard-banner-actions .btn {
    width: 100%;
  }

  .welcome-stats {
    grid-template-columns: 1fr 1fr !important;
    gap: 10px;
  }

  .admin-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .toolbar-left {
    flex-direction: column;
    width: 100%;
  }

  .toolbar-left .form-select,
  .toolbar-left .search-input,
  .toolbar-search .search-input {
    width: 100%;
  }

  .admin-table {
    font-size: 0.78rem;
  }

  .admin-table th,
  .admin-table td {
    padding: 10px 8px;
  }

  .admin-table .text-right {
    white-space: nowrap;
  }

  .admin-table .btn-sm {
    margin-bottom: 4px;
  }

  .content-editor-layout {
    flex-direction: column;
    height: auto;
    min-height: 0;
  }

  .content-mat-sidebar {
    width: 100%;
    min-width: 0;
    height: 180px;
  }

  .content-mat-workspace {
    padding: 16px;
  }

  .content-target-header {
    flex-wrap: wrap;
    gap: 10px;
  }

  .section-tabs {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .section-tabs::-webkit-scrollbar { display: none; }

  .section-tab {
    flex-shrink: 0;
    font-size: 0.75rem;
    padding: 8px 10px;
  }

  .admin-modal {
    max-width: 100%;
    max-height: 92vh;
    margin: 0;
  }

  .form-row {
    flex-direction: column;
  }

  .form-row .form-group {
    width: 100% !important;
  }

  .site-footer {
    padding: 14px 12px !important;
  }
}

@media (max-width: 480px) {
  .admin-login-card {
    padding: 24px 18px 18px;
  }

  .stat-card { padding: 12px 8px; }

  .category-summary-grid {
    grid-template-columns: 1fr;
    padding: 12px;
  }
}