/* Triphuddle - Travel-Focused Design System */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600&display=swap');

/* CSS Variables for Travel Theme */
:root {
  /* Colors */
  --primary-blue: #1e40af;
  --primary-blue-light: #3b82f6;
  --primary-blue-dark: #1e3a8a;
  --secondary-orange: #f97316;
  --secondary-orange-light: #fb923c;
  --accent-green: #059669;
  --accent-green-light: #10b981;
  
  /* Neutrals */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Typography */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

/* Reset and Base Styles */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  line-height: 1.6;
  color: var(--gray-700);
  background-color: var(--gray-50);
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
  color: var(--gray-800);
  margin-bottom: var(--space-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

/* Navigation Styles */
.navbar-travel {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
  box-shadow: var(--shadow-md);
  padding: var(--space-md) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar-travel .container-travel {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.navbar-brand-travel {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  color: white !important;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.navbar-brand-travel:hover {
  color: var(--gray-100) !important;
  text-decoration: none;
}

.navbar-brand-travel::before {
  content: "✈️";
  font-size: 1.25rem;
}

.nav-link-travel {
  color: white !important;
  font-weight: 500;
  padding: var(--space-sm) var(--space-md) !important;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.nav-link-travel:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: white !important;
  text-decoration: none;
}

/* Hero Section */
.hero-section {
  background: linear-gradient(rgba(30, 64, 175, 0.8), rgba(30, 64, 175, 0.6)),
              url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><rect fill="%233b82f6" width="1200" height="600"/><path fill="%232563eb" d="M0,300 Q300,200 600,300 T1200,300 L1200,600 L0,600 Z"/></svg>');
  background-size: cover;
  background-position: center;
  color: white;
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  min-height: 42vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-content h1 {
  color: white;
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: var(--space-lg);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-content p {
  font-size: 1.25rem;
  margin-bottom: var(--space-xl);
  opacity: 0.95;
}

/* Buttons */
.btn-travel {
  font-family: var(--font-body);
  font-weight: 500;
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  transition: all 0.2s ease;
  font-size: 1rem;
}

.btn-primary-travel {
  background: var(--secondary-orange);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary-travel:hover {
  background: var(--secondary-orange-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
  color: white;
  text-decoration: none;
}

.btn-secondary-travel {
  background: white;
  color: var(--primary-blue);
  border: 2px solid var(--primary-blue);
}

.btn-secondary-travel:hover {
  background: var(--primary-blue);
  color: white;
  text-decoration: none;
}

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

.btn-success-travel:hover {
  background: var(--accent-green-light);
  color: white;
  text-decoration: none;
}

/* Cards */
.card-travel {
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: var(--space-xl);
  margin-bottom: var(--space-lg);
  transition: all 0.2s ease;
  border: none;
}

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

.trip-card {
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all 0.2s ease;
  text-decoration: none;
  color: inherit;
  display: block;
  margin-bottom: var(--space-lg);
}

.trip-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  text-decoration: none;
  color: inherit;
}

.trip-card-image {
  height: 200px;
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-orange));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: white;
}

.trip-card-content {
  padding: var(--space-lg);
}

.trip-card-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--gray-800);
}

.trip-card-meta {
  color: var(--gray-600);
  font-size: 0.875rem;
}

/* Feature Cards */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  margin: var(--space-2xl) 0;
}

.feature-card {
  text-align: center;
  padding: var(--space-xl);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: var(--space-lg);
}

.feature-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
  color: var(--gray-800);
}

/* Forms */
.form-group-travel {
  margin-bottom: var(--space-lg);
}

.form-label-travel {
  display: block;
  font-weight: 500;
  margin-bottom: var(--space-sm);
  color: var(--gray-700);
}

.form-control-travel {
  width: 100%;
  padding: var(--space-md);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color 0.2s ease;
}

.form-control-travel:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

/* Alerts */
.alert-travel {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  border-left: 4px solid;
}

.alert-success {
  background-color: #f0fdf4;
  border-color: var(--accent-green);
  color: #166534;
}

.alert-danger {
  background-color: #fef2f2;
  border-color: #ef4444;
  color: #991b1b;
}

.alert-info {
  background-color: #eff6ff;
  border-color: var(--primary-blue);
  color: #1e40af;
}

/* Container */
.container-travel {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Utilities */
.text-center { text-align: center; }
.text-white { color: white; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }
.mb-5 { margin-bottom: var(--space-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-xs); }
.mt-2 { margin-top: var(--space-sm); }
.mt-3 { margin-top: var(--space-md); }
.mt-4 { margin-top: var(--space-lg); }
.mt-5 { margin-top: var(--space-xl); }

/* Responsive Design */
@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .container-travel {
    padding: 0 var(--space-sm);
  }
}

/* Animation Classes */
.fade-in {
  animation: fadeIn 0.5s ease-in;
}

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

/* Loading States */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Progress Indicator States */
.progress-active {
  color: var(--accent-green);
}

.progress-inactive {
  color: var(--gray-400);
}

/* Admin Dashboard Styles */
.admin-dashboard {
  padding: var(--space-xl) 0;
}

.admin-header {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
  color: white;
  padding: var(--space-xl);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-xl);
  box-shadow: var(--shadow-lg);
}

.admin-header h1 {
  color: white;
  margin-bottom: var(--space-sm);
  font-size: 2rem;
}

.admin-header .subtitle {
  opacity: 0.9;
  font-size: 1rem;
}

.admin-quick-actions {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  flex-wrap: wrap;
}

.admin-quick-actions .btn-travel {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
  font-size: 0.875rem;
  padding: var(--space-sm) var(--space-md);
}

.admin-quick-actions .btn-travel:hover {
  background: rgba(255, 255, 255, 0.3);
  color: white;
  text-decoration: none;
}

/* Stat Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.stat-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

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

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-blue), var(--secondary-orange));
}

.stat-card.users::before {
  background: linear-gradient(90deg, var(--primary-blue), var(--primary-blue-light));
}

.stat-card.trips::before {
  background: linear-gradient(90deg, var(--secondary-orange), var(--secondary-orange-light));
}

.stat-card.members::before {
  background: linear-gradient(90deg, var(--accent-green), var(--accent-green-light));
}

.stat-card.health::before {
  background: linear-gradient(90deg, #10b981, #34d399);
}

.stat-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-md);
}

.stat-icon {
  font-size: 2.5rem;
  opacity: 0.8;
}

.stat-trend {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.875rem;
  font-weight: 500;
}

.stat-trend.positive {
  color: var(--accent-green);
}

.stat-trend.negative {
  color: #ef4444;
}

.stat-trend.neutral {
  color: var(--gray-600);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: var(--space-xs);
  line-height: 1;
}

.stat-label {
  color: var(--gray-600);
  font-weight: 500;
  margin-bottom: var(--space-md);
}

.stat-action {
  margin-top: var(--space-md);
}

.stat-action .btn-travel {
  font-size: 0.875rem;
  padding: var(--space-sm) var(--space-md);
  width: 100%;
  justify-content: center;
}

/* Admin Content Grid */
.admin-content-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

@media (max-width: 768px) {
  .admin-content-grid {
    grid-template-columns: 1fr;
  }
}

/* Activity Feed */
.activity-feed {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
}

.activity-feed h3 {
  margin-bottom: var(--space-lg);
  color: var(--gray-800);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.activity-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  transition: background-color 0.2s ease;
}

.activity-item:hover {
  background-color: var(--gray-50);
}

.activity-icon {
  font-size: 1.5rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
  border-radius: 50%;
  flex-shrink: 0;
}

.activity-content {
  flex: 1;
}

.activity-description {
  font-weight: 500;
  color: var(--gray-800);
  margin-bottom: var(--space-xs);
}

.activity-time {
  font-size: 0.875rem;
  color: var(--gray-600);
}

/* Quick Actions Panel */
.quick-actions-panel {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
}

.quick-actions-panel h3 {
  margin-bottom: var(--space-lg);
  color: var(--gray-800);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.quick-action-item {
  display: block;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--gray-700);
  transition: all 0.2s ease;
  margin-bottom: var(--space-sm);
  border: 1px solid var(--gray-200);
}

.quick-action-item:hover {
  background-color: var(--primary-blue);
  color: white;
  text-decoration: none;
  transform: translateX(4px);
}

.quick-action-title {
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.quick-action-description {
  font-size: 0.875rem;
  opacity: 0.8;
}

/* System Status */
.system-status {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
}

.status-indicator.warning {
  background: #f59e0b;
}

.status-indicator.error {
  background: #ef4444;
}

/* Enhanced Admin Tables */
.admin-page-header {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
  box-shadow: var(--shadow-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.admin-page-title {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--gray-800);
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.admin-search-form {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  flex-wrap: wrap;
}

.admin-search-input {
  min-width: 250px;
  padding: var(--space-sm) var(--space-md);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  transition: border-color 0.2s ease;
}

.admin-search-input:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.admin-table-container {
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  margin-bottom: var(--space-xl);
}

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

.admin-table thead {
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
}

.admin-table th {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  font-weight: 600;
  color: var(--gray-700);
  border-bottom: 2px solid var(--gray-200);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.admin-table td {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--gray-100);
  vertical-align: middle;
}

.admin-table tbody tr {
  transition: background-color 0.2s ease;
}

.admin-table tbody tr:hover {
  background-color: var(--gray-50);
}

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

/* User Status Badges */
.user-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.user-badge.admin {
  background: linear-gradient(135deg, var(--secondary-orange), var(--secondary-orange-light));
  color: white;
}

.user-badge.regular {
  background: var(--gray-100);
  color: var(--gray-600);
}

/* Action Buttons */
.admin-actions {
  display: flex;
  gap: var(--space-xs);
  align-items: center;
}

.btn-admin {
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.btn-admin-edit {
  background: var(--primary-blue);
  color: white;
}

.btn-admin-edit:hover {
  background: var(--primary-blue-dark);
  color: white;
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-admin-delete {
  background: #ef4444;
  color: white;
}

.btn-admin-delete:hover {
  background: #dc2626;
  color: white;
  transform: translateY(-1px);
}

.btn-admin-add {
  background: var(--accent-green);
  color: white;
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
}

.btn-admin-add:hover {
  background: var(--accent-green-light);
  color: white;
  text-decoration: none;
}

/* User Avatar */
.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-orange));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 0.875rem;
  margin-right: var(--space-sm);
}

.user-info {
  display: flex;
  align-items: center;
}

.user-details {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-weight: 500;
  color: var(--gray-800);
  margin-bottom: var(--space-xs);
}

.user-email {
  color: var(--gray-600);
  font-size: 0.75rem;
}

/* Stats Summary */
.admin-stats-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.admin-stat-item {
  background: white;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  text-align: center;
  border-left: 4px solid var(--primary-blue);
}

.admin-stat-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: var(--space-xs);
}

.admin-stat-label {
  color: var(--gray-600);
  font-size: 0.875rem;
}

/* Pagination */
.admin-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  padding: var(--space-lg);
}

.pagination-btn {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--gray-200);
  background: white;
  color: var(--gray-600);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

.pagination-btn:hover {
  background: var(--primary-blue);
  color: white;
  text-decoration: none;
  border-color: var(--primary-blue);
}

.pagination-btn.active {
  background: var(--primary-blue);
  color: white;
  border-color: var(--primary-blue);
}

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

.pagination-btn.disabled:hover {
  background: white;
  color: var(--gray-600);
  border-color: var(--gray-200);
}

/* Empty State */
.admin-empty-state {
  text-align: center;
  padding: var(--space-2xl);
  color: var(--gray-600);
}

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

.admin-empty-state-title {
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
  color: var(--gray-700);
}

.admin-empty-state-description {
  margin-bottom: var(--space-lg);
}

/* Responsive Design for Admin Tables */
@media (max-width: 768px) {
  .admin-page-header {
    flex-direction: column;
    align-items: stretch;
  }
  
  .admin-search-form {
    justify-content: stretch;
  }
  
  .admin-search-input {
    min-width: auto;
    flex: 1;
  }
  
  .admin-table-container {
    overflow-x: auto;
  }
  
  .admin-table {
    min-width: 600px;
  }
  
  .admin-actions {
    flex-direction: column;
    gap: var(--space-xs);
  }
  
  .btn-admin {
    width: 100%;
    justify-content: center;
  }
}

/* Enhanced Stat Cards for System Info */
.stat-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

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

.stat-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-md);
}

.stat-icon {
  font-size: 2rem;
  opacity: 0.8;
}

.stat-trend {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.75rem;
  font-weight: 500;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
}

.stat-trend.positive {
  background: #f0fdf4;
  color: var(--accent-green);
}

.stat-trend.negative {
  background: #fef2f2;
  color: #ef4444;
}

.stat-trend.neutral {
  background: var(--gray-100);
  color: var(--gray-600);
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: var(--space-xs);
  line-height: 1;
}

.stat-label {
  color: var(--gray-600);
  font-weight: 500;
  margin-bottom: var(--space-md);
  font-size: 0.875rem;
}

.stat-action {
  margin-top: var(--space-md);
}

.stat-action .btn-travel {
  font-size: 0.75rem;
  padding: var(--space-xs) var(--space-sm);
  width: 100%;
  justify-content: center;
}

/* Quick Actions Enhancement */
.quick-action-item {
  display: block;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--gray-700);
  transition: all 0.2s ease;
  margin-bottom: var(--space-sm);
  border: 1px solid var(--gray-200);
  background: white;
}

.quick-action-item:hover {
  background: var(--gray-100);
  transform: translateY(-2px);
}

.quick-action-title {
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: var(--space-xs);
}

.quick-action-description {
  font-size: 0.875rem;
  color: var(--gray-600);
}

/* Interactive Notifications */
.alert-travel {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  border-left: 4px solid;
  font-weight: 500;
}

.alert-success {
  background-color: #f0fdf4;
  border-color: var(--accent-green);
  color: #166534;
}

.alert-info {
  background-color: #eff6ff;
  border-color: var(--primary-blue);
  color: #1e40af;
}

/* Animation Enhancements */
@keyframes slideIn {
  from { 
    transform: translateX(100%); 
    opacity: 0; 
  }
  to { 
    transform: translateX(0); 
    opacity: 1; 
  }
}

@keyframes slideOut {
  from { 
    transform: translateX(0); 
    opacity: 1; 
  }
  to { 
    transform: translateX(100%); 
    opacity: 0; 
  }
}

@keyframes pulse {
  0%, 100% { 
    transform: scale(1); 
  }
  50% { 
    transform: scale(1.05); 
  }
}

.pulse {
  animation: pulse 2s infinite;
}

/* Real-time Update Indicators */
.live-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.75rem;
  color: var(--accent-green);
  font-weight: 500;
}

.live-indicator::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
  animation: pulse 2s infinite;
}

/* Loading States */
.loading-button {
  position: relative;
  color: transparent !important;
}

.loading-button::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* How It Works Section */
.how-it-works-grid {
  display: flex;
  gap: 2rem;
  max-width: 800px;
  margin: 0 auto;
  justify-content: center;
}

@media (max-width: 768px) {
  .how-it-works-grid {
    flex-direction: column;
  }
}

.logout-confirmation {
    text-align: center;
    padding: 2rem 0;
    margin: 1rem 0;
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), rgba(34, 197, 94, 0.05));
    border-radius: var(--radius-lg);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.confirmation-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--accent-green);
}

.confirmation-message {
    font-size: 1.1rem;
    color: var(--gray-700);
    margin: 0;
    font-weight: 500;
}

/* ========================================
   AUTHENTICATION FORM STYLES
   Following Design Principles for Consistent UX
   ======================================== */

/* Main Authentication Container */
.create-trip-container {
  min-height: calc(100vh - 120px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--space-md);
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
}

.form-container {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
}

.trip-form {
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  transition: all 0.3s ease;
}

.trip-form:hover {
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}

/* Form Step Container */
.form-step {
  padding: var(--space-2xl);
}

.form-step.active {
  animation: fadeInUp 0.6s ease-out;
}

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

/* Step Header - Aesthetic Usability Effect */
.step-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--gray-100);
}

.step-header h2 {
  font-family: var(--font-heading);
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.step-header p {
  font-size: 1rem;
  color: var(--gray-600);
  line-height: 1.5;
  margin: 0;
  max-width: 400px;
  margin: 0 auto;
}

/* Form Groups - Law of Proximity */
.form-group {
  margin-bottom: var(--space-xl);
  position: relative;
}

.form-group:last-of-type {
  margin-bottom: var(--space-lg);
}

/* Form Labels - Typography Hierarchy */
.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--gray-700);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

/* Input Container with Icons */
.input-with-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: var(--space-md);
  font-size: 1.125rem;
  color: var(--gray-400);
  z-index: 1;
  transition: color 0.2s ease;
}

/* Form Inputs - Fitts's Law (large, clear targets) */
.form-input {
  width: 100%;
  padding: var(--space-md) var(--space-md) var(--space-md) 3rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 400;
  color: var(--gray-800);
  background: var(--gray-50);
  transition: all 0.2s ease;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-blue);
  background: white;
  box-shadow: 
    inset 0 1px 2px rgba(0, 0, 0, 0.05),
    0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form-input:focus + .input-icon,
.form-input:not(:placeholder-shown) + .input-icon {
  color: var(--primary-blue);
}

.form-input::placeholder {
  color: var(--gray-400);
  font-weight: 400;
}

/* Form Hints and Help Text */
.form-hint {
  font-size: 0.75rem;
  color: var(--gray-500);
  margin-top: var(--space-xs);
  line-height: 1.4;
  margin-bottom: 0;
}

/* Error Messages - Clear Visual Feedback */
.form-error {
  font-size: 0.75rem;
  color: #dc2626;
  margin-top: var(--space-xs);
  margin-bottom: 0;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.form-error::before {
  content: "⚠️";
  font-size: 0.875rem;
}

.form-input.error {
  border-color: #dc2626;
  background: #fef2f2;
}

/* Checkbox Container - Law of Proximity */
.checkbox-container {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.form-checkbox {
  width: 1.125rem;
  height: 1.125rem;
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-sm);
  background: white;
  cursor: pointer;
  position: relative;
  transition: all 0.2s ease;
}

.form-checkbox:checked {
  background: var(--primary-blue);
  border-color: var(--primary-blue);
}

.form-checkbox:checked::after {
  content: "✓";
  position: absolute;
  color: white;
  font-size: 0.75rem;
  font-weight: bold;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.checkbox-label {
  font-size: 0.875rem;
  color: var(--gray-600);
  cursor: pointer;
  font-weight: 400;
  margin: 0;
}

/* Action Buttons - Fitts's Law */
.step-actions {
  margin-top: var(--space-2xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.btn {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
  min-height: 48px; /* Fitts's Law - minimum touch target */
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.btn-success {
  background: linear-gradient(135deg, var(--accent-green), var(--accent-green-light));
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-success:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--accent-green-light), #34d399);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
  color: white;
  text-decoration: none;
}

.btn-secondary-travel {
  background: white;
  color: var(--primary-blue);
  border: 2px solid var(--primary-blue);
  box-shadow: var(--shadow-sm);
}

.btn-secondary-travel:hover:not(:disabled) {
  background: var(--primary-blue);
  color: white;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Social Login Section */
.social-login-container {
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
}

.login-divider {
  position: relative;
  text-align: center;
  margin-bottom: var(--space-xl);
}

.login-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gray-200);
  z-index: 1;
}

.login-divider-text {
  background: white;
  color: var(--gray-500);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0 var(--space-md);
  position: relative;
  z-index: 2;
}

/* Google Sign-in Button - Law of Similarity */
.google-signin-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  width: 100%;
  padding: var(--space-md) var(--space-xl);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  background: white;
  color: var(--gray-700);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.975rem;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
  min-height: 48px;
}

.google-signin-btn:hover {
  border-color: var(--gray-300);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
  text-decoration: none;
  color: var(--gray-700);
}

.google-signin-btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.google-logo {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.google-signin-text {
  font-weight: 500;
}

/* Footer Links */
.login-footer {
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--gray-100);
  text-align: center;
}

.login-footer p {
  font-size: 0.875rem;
  color: var(--gray-600);
  margin: 0;
  line-height: 1.5;
}

.login-footer a {
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.login-footer a:hover {
  color: var(--primary-blue-dark);
  text-decoration: underline;
}

/* Logout Confirmation Styles */
.logout-confirmation {
  text-align: center;
  padding: var(--space-xl) 0;
  margin: var(--space-lg) 0;
  background: linear-gradient(135deg, rgba(5, 150, 105, 0.08), rgba(16, 185, 129, 0.05));
  border-radius: var(--radius-lg);
  border: 1px solid rgba(5, 150, 105, 0.15);
}

.confirmation-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  color: var(--accent-green);
  animation: pulse 2s infinite;
}

.confirmation-message {
  font-size: 1rem;
  color: var(--gray-700);
  margin: 0;
  font-weight: 500;
  line-height: 1.5;
}

/* Loading States - Doherty Threshold */
.btn.loading {
  color: transparent;
  pointer-events: none;
}

.btn.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: translate(-50%, -50%) rotate(0deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Form Validation Visual Feedback */
.form-input.valid {
  border-color: var(--accent-green);
  background: #f0fdf4;
}

.form-input.valid:focus {
  box-shadow: 
    inset 0 1px 2px rgba(0, 0, 0, 0.05),
    0 0 0 3px rgba(5, 150, 105, 0.1);
}

/* Success Messages */
.form-success {
  font-size: 0.75rem;
  color: var(--accent-green);
  margin-top: var(--space-xs);
  margin-bottom: 0;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.form-success::before {
  content: "✅";
  font-size: 0.875rem;
}

/* Mobile Responsive - Aesthetic Usability */
@media (max-width: 640px) {
  .create-trip-container {
    padding: var(--space-lg) var(--space-md);
    min-height: calc(100vh - 80px);
  }
  
  .form-step {
    padding: var(--space-xl);
  }
  
  .step-header h2 {
    font-size: 1.5rem;
  }
  
  .step-header p {
    font-size: 0.9375rem;
  }
  
  .form-input {
    font-size: 16px; /* Prevents zoom on iOS */
  }
  
  .step-actions {
    gap: var(--space-sm);
  }
  
  .step-actions .btn {
    padding: var(--space-md);
    font-size: 0.9375rem;
  }
  
  .google-signin-btn {
    font-size: 0.9375rem;
    padding: var(--space-md);
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .form-input {
    border-width: 3px;
  }
  
  .btn {
    border: 2px solid transparent;
  }
  
  .btn-success {
    border-color: var(--accent-green);
  }
  
  .btn-secondary-travel {
    border-color: var(--primary-blue);
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .form-step.active,
  .btn,
  .form-input,
  .google-signin-btn,
  .trip-form {
    animation: none;
    transition: none;
  }
  
  .confirmation-icon {
    animation: none;
  }
}

/* Focus management for accessibility */
.form-input:focus-visible {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

.btn:focus-visible {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

.google-signin-btn:focus-visible {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}