/* ============================================
   GNEXT APPLICATION - DESIGN SYSTEM
   ============================================ */

:root {
  /* Brand Colors - Red, Black, Grey */
  --color-brand-red: #cc0000;
  --color-brand-red-hover: #e60000;
  --color-brand-red-alpha: rgba(204, 0, 0, 0.15);

  /* Light Mode (Default) */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8f9fa;
  --color-bg-tertiary: #e9ecef;
  --color-bg-elevated: #dee2e6;
  --color-bg-hover: #ced4da;

  --color-text-primary: #1a1a1a;
  --color-text-secondary: #495057;
  --color-text-muted: #6c757d;
  --color-text-inverse: #ffffff;

  --color-border: rgba(0, 0, 0, 0.08);
  --color-border-hover: rgba(0, 0, 0, 0.15);

  --color-accent-primary: var(--color-brand-red);
  --color-accent-secondary: var(--color-brand-red-hover);
  --color-accent-gradient: linear-gradient(135deg, #cc0000 0%, #ff1a1a 100%);

  /* Status Colors */
  --color-success: #198754;
  --color-success-bg: rgba(25, 135, 84, 0.1);
  --color-warning: #f59e0b;
  --color-warning-bg: rgba(245, 158, 11, 0.1);
  --color-error: #dc3545;
  --color-error-bg: rgba(220, 53, 69, 0.1);
  --color-info: #0dcaf0;
  --color-info-bg: rgba(13, 202, 240, 0.1);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 15px rgba(204, 0, 0, 0.2);

  /* Typography & Layout Constant */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --spacing-xs: 0.2rem;
  --spacing-sm: 0.4rem;
  --spacing-md: 0.75rem;
  --spacing-lg: 1rem;
  --spacing-xl: 1.5rem;
  --spacing-2xl: 2rem;
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
  --sidebar-width: 240px;
  --header-height: 52px;
}

/* Dark Mode Overrides */
[data-theme="dark"] {
  --color-bg-primary: #0f1113;
  --color-bg-secondary: #1a1d21;
  --color-bg-tertiary: #2a2e33;
  --color-bg-elevated: #373c42;
  --color-bg-hover: #454a51;

  --color-text-primary: #f8f9fa;
  --color-text-secondary: #adb5bd;
  --color-text-muted: #868e96;
  --color-text-inverse: #0f1113;

  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.15);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 15px rgba(204, 0, 0, 0.3);
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-secondary);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text-primary);
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.25rem;
}

h4 {
  font-size: 1.125rem;
}

h5 {
  font-size: 1rem;
}

h6 {
  font-size: 0.875rem;
}

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

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

.text-success {
  color: var(--color-success);
}

.text-warning {
  color: var(--color-warning);
}

.text-error {
  color: var(--color-error);
}

/* ============================================
   LAYOUT COMPONENTS
   ============================================ */

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

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--color-bg-secondary);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 1000;
  transition: transform var(--transition-base), width var(--transition-base);
}

.sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

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


.sidebar-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.sidebar-logo {
  width: 40px;
  height: 40px;
  background: var(--color-accent-gradient);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  color: white;
  box-shadow: var(--shadow-sm);
}

.sidebar-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.sidebar-nav {
  flex: 1;
  padding: var(--spacing-md);
  overflow-y: auto;
}

.nav-section {
  margin-bottom: var(--spacing-lg);
}

.nav-section-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  padding: var(--spacing-sm) var(--spacing-md);
  margin-bottom: var(--spacing-xs);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-bottom: 2px;
}

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

.nav-item.active {
  background: var(--color-accent-gradient);
  color: white;
  box-shadow: var(--shadow-glow);
}

.nav-item-icon {
  width: 20px;
  height: 20px;
  opacity: 0.8;
}

.nav-item.active .nav-item-icon {
  opacity: 1;
}

/* User Profile in Sidebar */
.sidebar-footer {
  padding: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.user-profile {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
}

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

/* Theme Toggle */
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-top: var(--spacing-sm);
}

.theme-toggle:hover {
  background: var(--color-bg-tertiary);
  color: var(--color-accent-primary);
  border-color: var(--color-accent-primary);
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--color-accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
  color: white;
}

.user-info {
  flex: 1;
  min-width: 0;
}

.user-name {
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

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

/* Header */
.header {
  height: var(--header-height);
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-xl);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.mobile-menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}


.page-title {
  font-size: 1.25rem;
  font-weight: 600;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.breadcrumb-separator {
  color: var(--color-text-muted);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Page Content */
.page-content {
  flex: 1;
  padding: var(--spacing-xl);
  overflow-y: auto;
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

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

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

.card-title {
  font-size: 1rem;
  font-weight: 600;
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-tertiary);
}

/* Stat Cards */
.stat-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  transition: all var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.stat-icon.primary {
  background: var(--color-info-bg);
  color: var(--color-info);
}

.stat-icon.success {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.stat-icon.warning {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

.stat-icon.error {
  background: var(--color-error-bg);
  color: var(--color-error);
}

.stat-content {
  flex: 1;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
}

.stat-trend {
  font-size: 0.75rem;
  font-weight: 500;
  margin-top: var(--spacing-xs);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.stat-trend.up {
  color: var(--color-success);
}

.stat-trend.down {
  color: var(--color-error);
}

/* Grid Layout for Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

.btn-primary {
  background: var(--color-accent-gradient);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

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

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

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

.btn-success:hover:not(:disabled) {
  filter: brightness(1.1);
}

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

.btn-danger:hover:not(:disabled) {
  filter: brightness(1.1);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
}

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

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.75rem;
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
}

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

/* ============================================
   FORMS
   ============================================ */

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
  font-family: inherit;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

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

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

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-md) center;
  padding-right: 2.5rem;
}

.form-checkbox,
.form-radio {
  width: 18px;
  height: 18px;
  accent-color: var(--color-accent-primary);
  cursor: pointer;
}

.form-helper {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
}

.form-error {
  font-size: 0.75rem;
  color: var(--color-error);
  margin-top: var(--spacing-xs);
}

/* Search Input */
.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.search-input {
  padding-left: 2.5rem;
}

.search-icon {
  position: absolute;
  left: var(--spacing-md);
  color: var(--color-text-muted);
  pointer-events: none;
}

/* ============================================
   TABLES
   ============================================ */

.table-container {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.table th,
.table td {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.table th {
  background: var(--color-bg-tertiary);
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.table tbody tr {
  transition: background var(--transition-fast);
}

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

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

.table-actions {
  display: flex;
  gap: var(--spacing-xs);
}

/* ============================================
   BADGES & STATUS
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-primary {
  background: var(--color-info-bg);
  color: var(--color-info);
}

.badge-success {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.badge-warning {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

.badge-danger {
  background: var(--color-error-bg);
  color: var(--color-error);
}

.badge-neutral {
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
}

/* Status Indicator */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  display: inline-block;
  margin-right: var(--spacing-sm);
}

.status-dot.active {
  background: var(--color-success);
}

.status-dot.pending {
  background: var(--color-warning);
}

.status-dot.inactive {
  background: var(--color-error);
}

/* ============================================
   MODALS
   ============================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

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

.modal {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow: hidden;
  transform: scale(0.95) translateY(10px);
  transition: transform var(--transition-base);
}

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

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

.modal-title {
  font-size: 1.125rem;
  font-weight: 600;
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.modal-body {
  padding: var(--spacing-lg);
  overflow-y: auto;
  max-height: 60vh;
}

.modal-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-md);
}

.modal-lg {
  max-width: 700px;
}

.modal-xl {
  max-width: 900px;
}

/* ============================================
   TABS
   ============================================ */

.tabs {
  display: flex;
  gap: var(--spacing-xs);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-lg);
}

.tab {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border: none;
  background: none;
  cursor: pointer;
  position: relative;
  transition: color var(--transition-fast);
}

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

.tab.active {
  color: var(--color-accent-primary);
}

.tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent-gradient);
  border-radius: var(--radius-sm);
}

.tab-content {
  display: none;
}

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

/* ============================================
   ALERTS & NOTIFICATIONS
   ============================================ */

.alert {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  border: 1px solid;
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.alert-info {
  background: var(--color-info-bg);
  border-color: rgba(59, 130, 246, 0.3);
  color: var(--color-info);
}

.alert-success {
  background: var(--color-success-bg);
  border-color: rgba(16, 185, 129, 0.3);
  color: var(--color-success);
}

.alert-warning {
  background: var(--color-warning-bg);
  border-color: rgba(245, 158, 11, 0.3);
  color: var(--color-warning);
}

.alert-error {
  background: var(--color-error-bg);
  border-color: rgba(239, 68, 68, 0.3);
  color: var(--color-error);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.toast {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* ============================================
   PAGINATION
   ============================================ */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-lg);
}

.pagination-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled) {
  background: var(--color-bg-tertiary);
  border-color: var(--color-border-hover);
}

.pagination-btn.active {
  background: var(--color-accent-gradient);
  border-color: transparent;
  color: white;
}

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

/* ============================================
   LOGIN PAGE
   ============================================ */

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-primary);
  padding: var(--spacing-lg);
}

.login-container {
  width: 100%;
  max-width: 420px;
}

.login-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-lg);
}

.login-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.login-logo-icon {
  width: 56px;
  height: 56px;
  background: var(--color-accent-gradient);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: 700;
  color: white;
}

.login-title {
  font-size: 1.75rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-xs);
}

.login-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xl);
}

.login-form .form-group:last-of-type {
  margin-bottom: var(--spacing-xl);
}

.login-btn {
  width: 100%;
  padding: var(--spacing-md);
  font-size: 1rem;
}

.login-footer {
  text-align: center;
  margin-top: var(--spacing-lg);
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* ============================================
   EMPTY STATES
   ============================================ */

.empty-state {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--color-text-muted);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.empty-state-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.empty-state-text {
  font-size: 0.875rem;
  margin-bottom: var(--spacing-lg);
}

/* ============================================
   LOADING STATES
   ============================================ */

.loading-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent-primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

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

.skeleton {
  background: linear-gradient(90deg,
      var(--color-bg-tertiary) 25%,
      var(--color-bg-hover) 50%,
      var(--color-bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

/* ============================================
   RESPONSIVE DESIGN (Media Queries)
   ============================================ */

/* Tablet and Smaller (Desktop First Approach Refactored to Mobile) */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: 240px;
    --spacing-xl: 1.5rem;
  }
}

/* Mobile Devices */
@media (max-width: 768px) {
  :root {
    --spacing-xl: 1rem;
    --header-height: 56px;
  }

  .sidebar {
    transform: translateX(-100%);
    box-shadow: var(--shadow-lg);
  }

  .sidebar.active {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .mobile-menu-toggle {
    display: flex !important;
  }

  .header {
    padding: 0 var(--spacing-md);
  }

  .page-content {
    padding: var(--spacing-md);
  }

  .page-title {
    font-size: 1.125rem;
  }

  .breadcrumb {
    display: none;
    /* Hide on small mobile to save space */
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }

  .card-header .btn {
    width: 100%;
  }

  /* Table Responsiveness */
  .table-container {
    margin: 0 -var(--spacing-md);
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  .modal {
    width: 95%;
    max-height: 85vh;
  }
}

/* Extra Small Devices */
@media (max-width: 480px) {
  .header-right .btn-icon {
    display: none;
    /* Hide secondary icons */
  }

  .user-name {
    display: none;
    /* Hide name, show avatar only in header if present */
  }
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }

  100% {
    background-position: -200% 0;
  }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-center {
  justify-content: center;
}

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.p-sm {
  padding: var(--spacing-sm);
}

.p-md {
  padding: var(--spacing-md);
}

.p-lg {
  padding: var(--spacing-lg);
}

.hidden {
  display: none !important;
}

.block {
  display: block;
}

.w-full {
  width: 100%;
}

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

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

.font-mono {
  font-family: var(--font-mono);
}

.font-bold {
  font-weight: 700;
}

.font-medium {
  font-weight: 500;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ============================================
   MOBILE RESPONSIVE STYLES
   ============================================ */

@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .mobile-menu-toggle {
    display: flex !important;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
    --spacing-2xl: 2rem;
  }

  .page-content {
    padding: var(--spacing-md);
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .header {
    padding: 0 var(--spacing-md);
  }

  .modal {
    width: 95%;
    max-height: 85vh;
  }

  .table-container {
    font-size: 0.8125rem;
  }

  .table th,
  .table td {
    padding: var(--spacing-sm);
  }

  .login-card {
    padding: var(--spacing-lg);
  }
}