/* ============================================
   MyDargo Enterprise UI - Professional Theme
   ============================================ */

/* CSS Variables - Professional Enterprise Color Scheme */
:root {
  /* Primary Colors - Professional Blue */
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --primary-bg: rgba(37, 99, 235, 0.1);

  /* Secondary Colors */
  --secondary-color: #10b981;
  --secondary-dark: #059669;

  /* Status Colors */
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;
  --info-color: #3b82f6;

  /* Neutral Colors - Slate Gray Scale */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-light: #94a3b8;

  /* Background Colors */
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-tertiary: #e2e8f0;
  --bg-card: #ffffff;

  /* Border Colors */
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  --border-dark: #cbd5e1;

  /* Sidebar */
  --sidebar-width: 260px;
  --sidebar-bg: #0f172a;
  --sidebar-text: #e2e8f0;
  --sidebar-text-muted: #94a3b8;
  --sidebar-hover: rgba(255, 255, 255, 0.08);
  --sidebar-active: rgba(37, 99, 235, 0.2);
  --sidebar-border: rgba(255, 255, 255, 0.1);

  /* Header */
  --header-height: 64px;
  --header-bg: #ffffff;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}

/* Dark Mode Colors */
.dark-mode {
  --primary-color: #3b82f6;
  --primary-dark: #2563eb;
  --primary-light: #60a5fa;
  --primary-bg: rgba(59, 130, 246, 0.15);

  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-light: #64748b;

  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-card: #1e293b;

  --border-color: #334155;
  --border-light: #1e293b;
  --border-dark: #475569;

  --sidebar-bg: #020617;
  --sidebar-hover: rgba(255, 255, 255, 0.06);
  --sidebar-active: rgba(59, 130, 246, 0.25);

  --header-bg: #1e293b;

  --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, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
}

/* ============================================
   Reset and Base Styles
   ============================================ */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.5;
  min-height: 100vh;
}

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

a:hover {
  color: var(--primary-dark);
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  transition: all var(--transition-base);
}

input, select, textarea {
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--text-primary);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  width: 100%;
  outline: none;
  transition: all var(--transition-fast);
}

input:focus, select:focus, textarea:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--primary-bg);
}

.hidden {
  display: none !important;
}

/* ============================================
   App Container Layout
   ============================================ */

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

/* ============================================
   Sidebar Navigation
   ============================================ */

.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background-color: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  z-index: 1000;
  transition: transform var(--transition-slow);
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--sidebar-border);
}

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

.logo-icon {
  color: var(--primary-color);
  flex-shrink: 0;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: -0.025em;
}

.sidebar-close-btn {
  display: none;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  color: var(--sidebar-text-muted);
  justify-content: center;
  align-items: center;
}

.sidebar-close-btn:hover {
  background-color: var(--sidebar-hover);
  color: var(--sidebar-text);
}

/* Sidebar Navigation */
.sidebar-nav {
  flex: 1;
  padding: 1rem 0;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.875rem 1.5rem;
  color: var(--sidebar-text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  cursor: pointer;
  border-left: 3px solid transparent;
}

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

.nav-item.active {
  background-color: var(--sidebar-active);
  color: #fff;
  border-left-color: var(--primary-color);
}

.nav-item i {
  width: 20px;
  font-size: 1rem;
  text-align: center;
}

/* Sidebar Footer - User Profile */
.sidebar-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--sidebar-border);
  position: relative;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

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

.sidebar-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--sidebar-border);
}

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

.user-name {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--sidebar-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.user-menu-btn {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--sidebar-text-muted);
}

.user-menu-btn:hover {
  background-color: var(--sidebar-hover);
  color: var(--sidebar-text);
}

/* User Dropdown Menu */
.user-dropdown-menu {
  position: absolute;
  bottom: 100%;
  left: 1rem;
  right: 1rem;
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  margin-bottom: 0.5rem;
  overflow: hidden;
  z-index: 1001;
}

.dropdown-menu-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: all var(--transition-fast);
  cursor: pointer;
}

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

.dropdown-menu-item i {
  width: 16px;
  text-align: center;
  color: var(--text-muted);
}

.dropdown-divider {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 0.25rem 0;
}

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

.logout-item:hover i {
  color: var(--danger-color);
}

/* ============================================
   Sidebar Overlay (Mobile)
   ============================================ */

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

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

/* ============================================
   Main Wrapper
   ============================================ */

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

/* Auth pages: full width, no sidebar margin */
.app-container:has(.auth-page:not(.hidden)) .main-wrapper {
  margin-left: 0;
}

/* ============================================
   Top Header (Mobile)
   ============================================ */

.top-header {
  height: var(--header-height);
  background-color: var(--header-bg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.burger-menu {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 1.25rem;
}

.burger-menu:hover {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

.page-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
}

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

.header-user-btn {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  padding: 0;
  overflow: hidden;
}

.header-avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ============================================
   Main Content
   ============================================ */

.main-content {
  flex: 1;
  padding: 2rem;
}

/* Remove padding for auth pages */
.main-content:has(.auth-page:not(.hidden)) {
  padding: 0;
}

.page-content {
  max-width: 1400px;
  margin: 0 auto;
}

.page-section {
  animation: fadeIn var(--transition-base);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   Notification Area
   ============================================ */

.notification-area {
  margin-bottom: 1.5rem;
}

.notification {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  background-color: var(--bg-card);
  border-left: 4px solid var(--primary-color);
  box-shadow: var(--shadow-md);
  margin-bottom: 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  animation: slideIn var(--transition-base);
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

.notification.error { border-left-color: var(--danger-color); }
.notification.success { border-left-color: var(--success-color); }
.notification.warning { border-left-color: var(--warning-color); }

.close-notification {
  padding: 0.25rem;
  color: var(--text-muted);
  font-size: 1rem;
}

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

/* ============================================
   Authentication Pages
   ============================================ */

.auth-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.auth-wrapper {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  padding: 1.5rem;
}

.dark-mode .auth-wrapper {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

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

.auth-box {
  background-color: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: 2.5rem;
  border: 1px solid var(--border-light);
}

.auth-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.auth-logo-icon {
  color: #000;
}

.auth-brand {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.025em;
}

.auth-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9375rem;
  margin-bottom: 2rem;
}

/* Form Styles */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.input-wrapper {
  position: relative;
}

.input-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.875rem;
}

.input-wrapper input {
  padding-left: 2.75rem;
}

.input-error {
  border-color: var(--danger-color) !important;
  background-color: rgba(239, 68, 68, 0.05);
}

.input-error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15) !important;
}

.form-actions {
  margin-top: 1.5rem;
}

.form-help {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.375rem;
}

/* Auth Links */
.auth-links {
  display: flex;
  justify-content: space-between;
  margin-top: 1.5rem;
  font-size: 0.875rem;
}

.auth-link {
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--transition-fast);
}

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

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn i {
  font-size: 0.875rem;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

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

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

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

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

.btn-danger:hover {
  background-color: #dc2626;
}

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

.btn-warning:hover {
  background-color: #d97706;
}

.btn-full {
  width: 100%;
}

.btn-sm {
  padding: 0.5rem 0.875rem;
  font-size: 0.8125rem;
}

.btn.disabled,
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* ============================================
   Page Headers
   ============================================ */

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.page-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ============================================
   Cards
   ============================================ */

.card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

/* ============================================
   Home Page / Dashboard
   ============================================ */

.welcome-container {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 0;
}

.welcome-container h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.welcome-container > p {
  color: var(--text-muted);
  font-size: 1.0625rem;
  margin-bottom: 2.5rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.stat-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  transition: all var(--transition-base);
}

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

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background-color: var(--primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-icon i {
  font-size: 1.375rem;
  color: var(--primary-color);
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  display: block;
  line-height: 1.2;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
}

.quick-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.action-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  padding: 2rem;
  text-align: center;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  color: var(--text-primary);
  cursor: pointer;
}

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

.action-card i {
  font-size: 2.5rem;
  color: var(--primary-color);
}

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

/* ============================================
   Profile Page
   ============================================ */

.profile-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.profile-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.profile-header {
  display: flex;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  gap: 1.5rem;
}

.profile-avatar-container {
  position: relative;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background-color: var(--bg-secondary);
}

.profile-avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: 3px solid var(--bg-card);
  border-radius: 50%;
}

.btn-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
  cursor: pointer;
  border-radius: 50%;
}

.profile-avatar-container:hover .btn-overlay {
  opacity: 1;
}

.profile-info h3 {
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.profile-info p {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 0.5rem;
}

.badge i {
  font-size: 0.6875rem;
}

.badge-success {
  background-color: rgba(16, 185, 129, 0.15);
  color: var(--success-color);
}

.profile-details,
.profile-section-content {
  padding: 1.5rem;
}

.profile-section-header {
  padding: 1rem 1.5rem;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.profile-section-header h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ============================================
   Settings Page
   ============================================ */

.settings-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.settings-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.settings-section-header {
  padding: 1rem 1.5rem;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.settings-section-header h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.settings-section-content {
  padding: 0.5rem;
}

.settings-option {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  border-bottom: 1px solid var(--border-light);
}

.settings-option:last-child {
  border-bottom: none;
}

.settings-option-label {
  flex: 1;
  padding-right: 1rem;
}

.settings-option-label h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.settings-option-label p {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.settings-option-control.full-width {
  width: 100%;
  margin-top: 1rem;
}

/* Toggle Switch */
.toggle-switch {
  position: relative;
  width: 48px;
  height: 26px;
  background-color: var(--border-dark);
  border-radius: 9999px;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.toggle-switch.enabled {
  background-color: var(--primary-color);
}

.toggle-slider {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: #fff;
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.toggle-switch.enabled .toggle-slider {
  transform: translateX(22px);
}

.toggle-option {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
}

/* Theme Toggle */
.theme-toggle-large {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.theme-icon {
  font-size: 1.125rem;
  color: var(--text-muted);
}

.theme-icon.light-icon {
  color: #fbbf24;
}

.theme-icon.dark-icon {
  color: #6366f1;
}

.theme-toggle-slider {
  width: 52px;
  height: 28px;
  background-color: var(--border-dark);
  border-radius: 9999px;
  position: relative;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.dark-mode .theme-toggle-slider {
  background-color: var(--primary-color);
}

.theme-toggle-slider .theme-toggle-handle {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background-color: #fff;
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.dark-mode .theme-toggle-slider .theme-toggle-handle {
  transform: translateX(24px);
}

/* ============================================
   Modal
   ============================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 1rem;
  animation: fadeIn var(--transition-fast);
}

.modal-content {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  animation: slideUp var(--transition-base);
}

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

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

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

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border-color);
}

/* ============================================
   Footer
   ============================================ */

.footer {
  padding: 1rem;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-card);
}

/* ============================================
   Additional Form Elements
   ============================================ */

.tab-toggle {
  display: flex;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
  margin-bottom: 1rem;
}

.tab-toggle-btn {
  flex: 1;
  padding: 0.75rem 1rem;
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 500;
  border-right: 1px solid var(--border-color);
}

.tab-toggle-btn:last-child {
  border-right: none;
}

.tab-toggle-btn.active {
  background-color: var(--primary-color);
  color: #fff;
}

.tab-content {
  display: none;
}

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

.domain-input-group {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.domain-input-group input {
  flex: 1;
  border: none;
  border-radius: 0;
}

.domain-input-group .domain-suffix {
  padding: 0.75rem 1rem;
  background-color: var(--bg-secondary);
  color: var(--text-muted);
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  border-left: 1px solid var(--border-color);
  white-space: nowrap;
}

/* Environment Variables Section */
.env-variables-section {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-top: 0.75rem;
}

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

/* Custom Email Fields */
.custom-email-fields {
  margin-top: 1rem;
  padding: 1.25rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

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

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

.conditional-fields {
  margin-top: 1rem;
  padding: 1rem;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

/* ============================================
   Responsive Design
   ============================================ */

/* Tablet and smaller */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }

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

  .sidebar-close-btn {
    display: flex;
  }

  .sidebar-overlay.visible {
    display: block;
  }

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

  .top-header {
    display: flex;
  }

  .burger-menu {
    display: flex;
  }

  .header-user-btn {
    display: block;
  }
}

/* Mobile */
@media (max-width: 640px) {
  .main-content {
    padding: 1rem;
  }

  .auth-box {
    padding: 1.75rem;
  }

  .auth-links {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-header h2 {
    font-size: 1.25rem;
  }

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

  .quick-actions {
    grid-template-columns: 1fr;
  }

  .profile-header {
    flex-direction: column;
    text-align: center;
  }

  .settings-option {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .modal-content {
    margin: 0.5rem;
    max-height: calc(100vh - 1rem);
  }

  .device-actions {
    flex-wrap: wrap;
  }
}

/* Avatar Upload Preview */
.avatar-preview-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(255, 255, 255, 0.95);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 10;
  overflow: hidden;
}

.dark-mode .avatar-preview-overlay {
  background-color: rgba(30, 41, 59, 0.95);
}

.avatar-preview-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar-preview-actions {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: rgba(0, 0, 0, 0.7);
  padding: 0.75rem 0;
}

.avatar-preview-actions .btn {
  padding: 0.375rem 0.875rem;
  font-size: 0.75rem;
}

/* ============================================
   Onboarding Page
   ============================================ */

.onboarding-container {
  max-width: 600px;
  margin: 0 auto;
  padding: 2rem 0;
}

.onboarding-hero {
  text-align: center;
  margin-bottom: 2.5rem;
}

.onboarding-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
}

.onboarding-icon i {
  font-size: 2rem;
  color: #fff;
}

.onboarding-hero h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.onboarding-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
}

.onboarding-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  padding: 2rem;
  margin-bottom: 2rem;
}

.onboarding-step {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--primary-color);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.step-content h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.step-content p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.onboarding-form .form-group {
  margin-bottom: 1.25rem;
}

.onboarding-form .form-actions {
  margin-top: 2rem;
}

.btn-lg {
  padding: 0.875rem 1.5rem;
  font-size: 1rem;
}

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

.onboarding-features h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.feature-item i {
  color: var(--primary-color);
  font-size: 1rem;
}

.feature-item span {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Sidebar disabled state for onboarding */
.sidebar.onboarding-mode .nav-item:not([data-page="home"]):not([data-page="onboarding"]) {
  opacity: 0.4;
  pointer-events: none;
}

.sidebar.onboarding-mode .nav-item:not([data-page="home"]):not([data-page="onboarding"])::after {
  content: '';
  position: absolute;
  right: 1rem;
  width: 8px;
  height: 8px;
  background-color: var(--text-muted);
  border-radius: 50%;
}

/* Responsive onboarding */
@media (max-width: 640px) {
  .onboarding-hero h1 {
    font-size: 1.5rem;
  }

  .onboarding-card {
    padding: 1.5rem;
  }

  .feature-list {
    grid-template-columns: 1fr;
  }
}

/* Container utility */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Utility for smooth transitions on theme change */
body,
body * {
  transition-property: background-color, border-color, color, fill, stroke;
  transition-duration: 150ms;
  transition-timing-function: ease;
}

/* Disable transition on load */
body.preload,
body.preload * {
  transition: none !important;
}