/* ==============================================================================
   BS Innovation Admin Dashboard Stylesheet (Modern & Responsive UI)
   ============================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Pretendard:wght@300;400;500;600;700;800&display=swap');

:root {
  --font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
  
  /* Primary & Brand */
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: rgba(79, 70, 229, 0.1);
  --primary-glow: rgba(79, 70, 229, 0.25);
  --secondary: #06b6d4;
  --accent: #8b5cf6;
  
  /* Status Colors */
  --success: #10b981;
  --success-light: rgba(16, 185, 129, 0.12);
  --warning: #f59e0b;
  --warning-light: rgba(245, 158, 11, 0.12);
  --danger: #ef4444;
  --danger-light: rgba(239, 68, 68, 0.12);
  --info: #3b82f6;
  --info-light: rgba(59, 130, 246, 0.12);

  /* Light Theme Variables */
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-card: #ffffff;
  --bg-sidebar: #0f172a;
  --bg-sidebar-active: #1e293b;
  --bg-hover: #f1f5f9;
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  
  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --text-sidebar: #94a3b8;
  --text-sidebar-bright: #ffffff;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.05);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.08);

  --sidebar-width: 260px;
  --header-height: 68px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --bg-main: #0b0f19;
  --bg-surface: #111827;
  --bg-card: #1e293b;
  --bg-sidebar: #090d16;
  --bg-sidebar-active: #161e2e;
  --bg-hover: #1e293b;
  --border-color: #334155;
  --border-light: #1e293b;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5);
}

/* Reset & Global */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Layout */
#app-layout {
  display: flex;
  min-height: 100vh;
  width: 100vw;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  color: var(--text-sidebar);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: var(--transition);
  box-shadow: 4px 0 16px rgba(0, 0, 0, 0.15);
}

.sidebar-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-sidebar-bright);
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.brand-badge {
  font-size: 0.65rem;
  padding: 2px 6px;
  background: rgba(79, 70, 229, 0.3);
  color: #a5b4fc;
  border-radius: 4px;
  margin-left: 4px;
  font-weight: 600;
  border: 1px solid rgba(165, 180, 252, 0.2);
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 16px 12px;
}

.sidebar-nav::-webkit-scrollbar {
  width: 4px;
}
.sidebar-nav::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

.nav-section-title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: #64748b;
  padding: 12px 14px 6px;
}

.nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  color: var(--text-sidebar);
  text-decoration: none;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-item a i {
  font-size: 1.1rem;
  width: 22px;
  text-align: center;
  color: #94a3b8;
  transition: var(--transition);
}

.nav-item a:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-sidebar-bright);
}

.nav-item a:hover i {
  color: var(--text-sidebar-bright);
}

.nav-item.active a {
  background: linear-gradient(90deg, var(--primary) 0%, rgba(79, 70, 229, 0.8) 100%);
  color: #ffffff;
  font-weight: 600;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.nav-item.active a i {
  color: #ffffff;
}

.nav-badge {
  margin-left: auto;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
}

.nav-badge.badge-new {
  background: var(--danger);
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.15);
}

.admin-profile-card {
  display: flex;
  align-items: center;
  gap: 12px;
}

.admin-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ec4899, #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: white;
  font-size: 0.95rem;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.admin-info {
  flex: 1;
  overflow: hidden;
}

.admin-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-sidebar-bright);
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

.admin-role {
  font-size: 0.75rem;
  color: #6ee7b7;
  display: flex;
  align-items: center;
  gap: 4px;
}

.admin-role::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--success);
  border-radius: 50%;
}

.btn-logout-sidebar {
  background: none;
  border: none;
  color: #94a3b8;
  font-size: 1.1rem;
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.btn-logout-sidebar:hover {
  color: var(--danger);
  background: rgba(239, 68, 68, 0.1);
}

/* Main Content Area */
.main-wrapper {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: var(--transition);
}

/* Top Header */
.top-header {
  height: var(--header-height);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  box-shadow: var(--shadow-sm);
}

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

.sidebar-toggle-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  transition: var(--transition);
}

.sidebar-toggle-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.page-title-wrap {
  display: flex;
  flex-direction: column;
}

.page-main-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-breadcrumb {
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.page-breadcrumb span.active {
  color: var(--primary);
  font-weight: 500;
}

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

.header-action-btn {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  font-size: 1rem;
  transition: var(--transition);
}

.header-action-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.btn-indicator {
  position: absolute;
  top: 7px;
  right: 7px;
  width: 8px;
  height: 8px;
  background: var(--danger);
  border-radius: 50%;
  border: 2px solid var(--bg-surface);
}

.header-time-badge {
  font-size: 0.8rem;
  color: var(--text-secondary);
  background: var(--bg-main);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.user-quick-profile {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 10px 4px 6px;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}

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

.user-quick-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}

.user-quick-info {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.user-quick-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.user-quick-status {
  font-size: 0.7rem;
  color: var(--success);
}

/* Page Content Container */
.content-body {
  flex: 1;
  padding: 28px;
  position: relative;
}

/* Async View Transition */
#view-container {
  animation: fadeIn 0.3s ease-out;
  min-height: calc(100vh - var(--header-height) - 100px);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Loading Skeleton & Spinner */
.view-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  gap: 16px;
  color: var(--text-secondary);
}

.spinner {
  width: 44px;
  height: 44px;
  border: 4px solid var(--border-color);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Common UI Components */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 24px;
  margin-bottom: 24px;
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-light);
}

.card-title {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 2px;
}

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

/* Grid System */
.grid-1 { display: grid; grid-template-columns: 1fr; gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-2-1 { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; }
.grid-1-2 { display: grid; grid-template-columns: 1fr 2fr; gap: 20px; }

/* Stat Cards */
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 22px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.stat-icon.primary { background: var(--primary-light); color: var(--primary); }
.stat-icon.success { background: var(--success-light); color: var(--success); }
.stat-icon.warning { background: var(--warning-light); color: var(--warning); }
.stat-icon.danger { background: var(--danger-light); color: var(--danger); }
.stat-icon.info { background: var(--info-light); color: var(--info); }

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 4px 0;
  letter-spacing: -0.5px;
}

.stat-change {
  font-size: 0.78rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

.stat-change.up { color: var(--success); }
.stat-change.down { color: var(--danger); }
.stat-change.neutral { color: var(--text-muted); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 16px;
  font-size: 0.88rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-sm { padding: 6px 12px; font-size: 0.8rem; }
.btn-lg { padding: 12px 24px; font-size: 1rem; }

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 2px 8px var(--primary-glow);
}
.btn-primary:hover {
  background: var(--primary-hover);
}

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

.btn-success {
  background: var(--success);
  color: #fff;
}
.btn-success:hover { background: #059669; }

.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover { background: #dc2626; }

.btn-outline-danger {
  background: transparent;
  border-color: var(--danger);
  color: var(--danger);
}
.btn-outline-danger:hover {
  background: var(--danger-light);
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.form-label .required {
  color: var(--danger);
  margin-left: 2px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  font-size: 0.9rem;
  font-family: inherit;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

textarea.form-control {
  min-height: 100px;
  resize: vertical;
}

.form-select {
  width: 100%;
  padding: 10px 14px;
  font-size: 0.9rem;
  font-family: inherit;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  outline: none;
  cursor: pointer;
  transition: var(--transition);
}
.form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.input-group {
  display: flex;
  align-items: center;
  position: relative;
}

.input-icon-left {
  position: absolute;
  left: 12px;
  color: var(--text-muted);
}

.input-group .form-control.has-icon-left {
  padding-left: 38px;
}

/* Switch Toggle */
.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--border-color);
  transition: .3s;
  border-radius: 24px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--primary);
}

input:checked + .slider:before {
  transform: translateX(20px);
}

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.table th {
  background: var(--bg-main);
  padding: 12px 16px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

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

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

.table tr:hover td {
  background-color: var(--bg-hover);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 9px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 20px;
}

.badge-primary { background: var(--primary-light); color: var(--primary); }
.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-info { background: var(--info-light); color: var(--info); }
.badge-secondary { background: var(--bg-hover); color: var(--text-secondary); }

/* Filter & Action Toolbar */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.toolbar-left, .toolbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.search-box {
  position: relative;
  min-width: 240px;
}

.search-box input {
  padding-left: 36px;
  height: 38px;
}

.search-box i {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  margin-top: 20px;
}

.page-btn {
  min-width: 34px;
  height: 34px;
  padding: 0 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
}

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

.page-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  font-weight: 700;
}

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

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background: var(--bg-surface);
  border-radius: var(--radius-xl);
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  transform: scale(0.95) translateY(10px);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.modal-container.modal-lg {
  max-width: 850px;
}

.modal-overlay.active .modal-container {
  transform: scale(1) translateY(0);
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-close-btn {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

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

.modal-body {
  padding: 24px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  background: var(--bg-main);
  border-bottom-left-radius: var(--radius-xl);
  border-bottom-right-radius: var(--radius-xl);
}

/* Toast Notification */
.toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 300px;
  max-width: 420px;
  pointer-events: auto;
  animation: slideInRight 0.3s ease-out;
  transition: var(--transition);
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(50px); }
  to { opacity: 1; transform: translateX(0); }
}

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

.toast-icon { font-size: 1.2rem; }
.toast-success .toast-icon { color: var(--success); }
.toast-error .toast-icon { color: var(--danger); }
.toast-warning .toast-icon { color: var(--warning); }
.toast-info .toast-icon { color: var(--info); }

.toast-message {
  font-size: 0.88rem;
  color: var(--text-primary);
  flex: 1;
  font-weight: 500;
}

/* Login Gate / Auth View */
#login-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, #090d16 0%, #1e1b4b 50%, #0f172a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99999;
  padding: 20px;
}

.login-card {
  width: 100%;
  max-width: 440px;
  background: rgba(30, 41, 59, 0.7);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  color: #fff;
  animation: zoomIn 0.3s ease-out;
}

@keyframes zoomIn {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}

.login-header {
  text-align: center;
  margin-bottom: 28px;
}

.login-brand-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-lg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 14px;
  box-shadow: 0 8px 24px var(--primary-glow);
}

.login-title {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.login-desc {
  font-size: 0.85rem;
  color: #94a3b8;
  margin-top: 6px;
}

.login-card .form-label {
  color: #e2e8f0;
}

.login-card .form-control {
  background: rgba(15, 23, 42, 0.6);
  border-color: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.login-card .form-control:focus {
  border-color: var(--primary);
  background: rgba(15, 23, 42, 0.9);
}

.login-card .btn-primary {
  width: 100%;
  padding: 12px;
  font-size: 1rem;
  margin-top: 8px;
}

.login-demo-hint {
  margin-top: 20px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  border: 1px dashed rgba(255, 255, 255, 0.15);
  font-size: 0.78rem;
  color: #cbd5e1;
  text-align: center;
}

.login-demo-hint code {
  background: rgba(79, 70, 229, 0.4);
  padding: 2px 6px;
  border-radius: 4px;
  color: #a5b4fc;
  font-weight: 700;
}

/* Dropdown Menu */
.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  min-width: 260px;
  padding: 8px 0;
  z-index: 500;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: var(--transition);
}

.dropdown.active .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-header {
  padding: 10px 18px 8px;
  border-bottom: 1px solid var(--border-light);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  font-size: 0.88rem;
  color: var(--text-primary);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
}

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

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

/* Tree View for Categories */
.category-tree {
  list-style: none;
}

.tree-node {
  margin-bottom: 8px;
}

.tree-node-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.tree-node-content:hover {
  border-color: var(--primary);
  background: var(--bg-hover);
}

.tree-children {
  list-style: none;
  padding-left: 28px;
  margin-top: 8px;
  border-left: 2px dashed var(--border-color);
}

/* Tabs */
.tabs-header {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.tab-btn {
  padding: 9px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.tab-btn.active {
  color: #ffffff;
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 4px 12px var(--primary-glow);
}

/* Responsive */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-2-1, .grid-1-2 { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root {
    --sidebar-width: 240px;
  }
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-wrapper {
    margin-left: 0;
  }
  .grid-4, .grid-3, .grid-2 {
    grid-template-columns: 1fr;
  }
  .top-header {
    padding: 0 16px;
  }
  .content-body {
    padding: 16px;
  }
  .header-time-badge, .user-quick-info {
    display: none;
  }
}