/* Modern CSS Reset and Base Styles */
:root {
  /* Color Palette */
  --primary-gradient: linear-gradient(135deg, #8e44ad 0%, #3498db 100%);
  --secondary-gradient: linear-gradient(135deg, #3498db 0%, #2ecc71 100%);
  --accent-gradient: linear-gradient(135deg, #e74c3c 0%, #e67e22 100%);
  --success-gradient: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
  --warning-gradient: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
  --danger-gradient: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
  
  /* Solid Colors */
  --primary-color: #8e44ad;
  --secondary-color: #3498db;
  --accent-color: #e74c3c;
  --success-color: #27ae60;
  --warning-color: #f39c12;
  --danger-color: #e74c3c;
  --dark-color: #2c3e50;
  --light-color: #ecf0f1;
  --gray-color: #95cdd6;
  
  /* Backgrounds */
  --bg-primary: #9988aa;
  --bg-secondary: #8899aa;
  --bg-dark: #2c3e50;
  --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  
  /* Text Colors */
  --text-primary: #44aab4;
  --text-secondary: #88aac4;
  --text-light: #224488;
  --text-white: #45afaf;
  
  /* Shadows */
  --shadow-sm: 0 2px 10px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.15);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.2);
  --shadow-glow: 0 0 20px rgba(142, 68, 173, 0.3);
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 30px;
  
  /* Transitions */
  --transition-fast: 0.3s ease;
  --transition-medium: 0.5s ease;
  --transition-slow: 0.8s ease;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-secondary);
  overflow-x: hidden;
}

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

/* Header & Navigation */
header {
  background: var(--primary-gradient);
  color: var(--text-white);
  padding: var(--space-md) 0;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text-white);
}

.logo-icon {
  font-size: 2rem;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

nav {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

nav a {
  color: var(--text-white);
  text-decoration: none;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-lg);
  transition: var(--transition-fast);
  position: relative;
  overflow: hidden;
}

nav a::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(255,255,255,0.1);
  transition: var(--transition-medium);
}

nav a:hover::before {
  left: 100%;
}

nav a:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-2px);
}

nav a.active {
  background: rgba(255,255,255,0.2);
  box-shadow: var(--shadow-glow);
}

/* Main Content */
main {
  padding: var(--space-xl) 0;
  min-height: calc(100vh - 200px);
}

/* Hero Section */
.hero {
  text-align: center;
  padding: var(--space-xl) 0;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
}

.hero h2 {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: slideInUp 1s ease;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  animation: slideInUp 1s ease 0.2s both;
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 12px 30px;
  border: none;
  border-radius: var(--radius-lg);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: var(--transition-medium);
}

.btn:hover::before {
  left: 100%;
}

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

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--secondary-gradient);
  color: var(--text-white);
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

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

.btn-accent:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline:hover {
  background: var(--primary-color);
  color: var(--text-white);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.9rem;
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.1rem;
}

/* CTA Buttons */
.cta-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  animation: slideInUp 1s ease 0.4s both;
}

/* Features Grid */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.feature {
  background: var(--bg-primary);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.feature::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--secondary-gradient);
}

.feature:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

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

.feature h3 {
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  font-size: 1.3rem;
}

.feature p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Form Styles */
.form-container {
  background: var(--bg-primary);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--space-lg);
  position: relative;
  overflow: hidden;
}

.form-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
}

.form-group {
  margin-bottom: var(--space-md);
  position: relative;
}

.form-group label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 600;
  color: var(--text-primary);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e0e0e0;
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: var(--transition-fast);
  background: var(--bg-secondary);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(142, 68, 173, 0.1);
  background: var(--bg-primary);
}

.form-control:hover {
  border-color: #bdc3c7;
}

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

.stat-card {
  background: var(--bg-primary);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--success-gradient);
}

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

.stat-card h3 {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.stat-card .amount {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.stat-card .change {
  font-size: 0.9rem;
  font-weight: 600;
}

.change.positive {
  color: var(--success-color);
}

.change.negative {
  color: var(--danger-color);
}

/* Tables */
.table-container {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-bottom: var(--space-lg);
}

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

.table table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

.table th {
  background: var(--bg-secondary);
  padding: var(--space-md);
  text-align: left;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 2px solid #e0e0e0;
}

.table td {
  padding: var(--space-md);
  border-bottom: 1px solid #f0f0f0;
  transition: var(--transition-fast);
}

.table tr:hover td {
  background: rgba(52, 152, 219, 0.05);
}

/* Alerts */
.alert {
  padding: var(--space-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  border-left: 4px solid transparent;
  animation: slideInRight 0.5s ease;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.alert-success {
  background: rgba(39, 174, 96, 0.1);
  border-left-color: var(--success-color);
  color: #155724;
}

.alert-error {
  background: rgba(231, 76, 60, 0.1);
  border-left-color: var(--danger-color);
  color: #721c24;
}

.alert-warning {
  background: rgba(243, 156, 18, 0.1);
  border-left-color: var(--warning-color);
  color: #856404;
}

.alert-info {
  background: rgba(52, 152, 219, 0.1);
  border-left-color: var(--secondary-color);
  color: #0c5460;
}

/* Status Badges */
.status-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-lg);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-pending {
  background: rgba(243, 156, 18, 0.1);
  color: var(--warning-color);
}

.status-confirmed {
  background: rgba(52, 152, 219, 0.1);
  color: var(--secondary-color);
}

.status-completed {
  background: rgba(39, 174, 96, 0.1);
  color: var(--success-color);
}

.status-rejected {
  background: rgba(231, 76, 60, 0.1);
  color: var(--danger-color);
}

.status-active {
  background: rgba(46, 204, 113, 0.1);
  color: var(--success-color);
}

.status-inactive {
  background: rgba(149, 165, 166, 0.1);
  color: var(--gray-color);
}

/* Loading Spinner */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid #f3f3f3;
  border-top: 2px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Progress Bars */
.progress-bar {
  width: 100%;
  height: 8px;
  background: #ecf0f1;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--success-gradient);
  border-radius: var(--radius-lg);
  transition: width 0.5s ease;
}

/* Cards with Hover Effects */
.card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.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); }

.hidden { display: none; }
.visible { display: block; }

.fade-in {
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-sm);
  }
  
  .header-content {
    flex-direction: column;
    text-align: center;
  }
  
  nav {
    justify-content: center;
  }
  
  .hero h2 {
    font-size: 2rem;
  }
  
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
  
  .features {
    grid-template-columns: 1fr;
  }
  
  .dashboard-stats {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
  
  .form-container {
    padding: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .hero h2 {
    font-size: 1.5rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
  }
  
  .stat-card .amount {
    font-size: 1.5rem;
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --light-color: #333333;
  }
  
  .form-control {
    background: #2d2d2d;
    border-color: #444;
    color: var(--text-primary);
  }
  
  .form-control:focus {
    background: #1a1a1a;
  }
}

/* Print Styles */
@media print {
  .btn, nav, .alert {
    display: none;
  }
  
  .container {
    max-width: none;
  }
}