/**
 * Modern Bootstrap 5.3+ UI Theme
 * Enhanced design system with modern variables, shadows, gradients, and animations
 */

:root {
  /* Modern Color Palette - Enhanced Bootstrap Colors */
  --bs-primary: #467fcf;
  --bs-primary-dark: #3a6fb0;
  --bs-primary-light: #5d92e0;
  --bs-secondary: #868e96;
  --bs-success: #5eba00;
  --bs-success-dark: #4a9600;
  --bs-info: #45aaf2;
  --bs-warning: #f1c40f;
  --bs-danger: #cd201f;
  --bs-light: #f8f9fa;
  --bs-dark: #343a40;
  
  /* Modern Extended Colors */
  --bs-azure: #45aaf2;
  --bs-teal: #2bcbba;
  --bs-cyan: #17a2b8;
  --bs-orange: #fd9644;
  --bs-purple: #a55eea;
  --bs-pink: #f66d9b;
  
  /* Gradient Colors */
  --gradient-primary: linear-gradient(135deg, #467fcf 0%, #5d92e0 100%);
  --gradient-success: linear-gradient(135deg, #5eba00 0%, #7bd235 100%);
  --gradient-info: linear-gradient(135deg, #45aaf2 0%, #2bcbba 100%);
  --gradient-warning: linear-gradient(135deg, #f1c40f 0%, #fd9644 100%);
  --gradient-danger: linear-gradient(135deg, #cd201f 0%, #f66d9b 100%);
  --gradient-dark: linear-gradient(135deg, #343a40 0%, #495057 100%);
  
  /* Modern Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Modern Card Shadows */
  --card-shadow: 0 6px 18px rgba(26, 46, 85, 0.08);
  --card-shadow-hover: 0 12px 28px rgba(26, 46, 85, 0.15);
  --card-shadow-active: 0 3px 12px rgba(26, 46, 85, 0.12);
  
  /* Typography - Modern System Font Stack */
  --font-family-sans-serif: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  --font-family-heading: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  
  /* Spacing System */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius - Modern Rounded Corners */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Modern Card Styles */
.card {
  border: 1px solid rgba(0, 0, 0, 0.05);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  transition: all var(--transition-base);
  overflow: hidden;
}

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

.card-header {
  background: linear-gradient(to bottom, #ffffff, #f8f9fa);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  padding: 1.25rem 1.5rem;
  font-weight: 600;
}

.card-body {
  padding: 1.5rem;
}

.card-footer {
  background: linear-gradient(to top, #ffffff, #f8f9fa);
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  padding: 1rem 1.5rem;
}

/* Modern Button Styles */
.btn {
  border-radius: var(--radius-md);
  font-weight: 600;
  padding: 0.625rem 1.25rem;
  transition: all var(--transition-base);
  border: none;
  box-shadow: var(--shadow-sm);
}

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

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

.btn-primary {
  background: var(--gradient-primary);
}

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

.btn-info {
  background: var(--gradient-info);
}

.btn-warning {
  background: var(--gradient-warning);
}

.btn-danger {
  background: var(--gradient-danger);
}

.btn-outline-primary {
  border: 2px solid var(--bs-primary);
  background: transparent;
  color: var(--bs-primary);
  box-shadow: none;
}

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

.btn-sm {
  padding: 0.375rem 0.875rem;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1.125rem;
  border-radius: var(--radius-lg);
}

/* Modern Form Controls */
.form-control,
.form-select {
  border: 1px solid #dce3e8;
  border-radius: var(--radius-md);
  padding: 0.625rem 1rem;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-xs);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--bs-primary);
  box-shadow: 0 0 0 0.25rem rgba(70, 127, 207, 0.15);
  outline: none;
}

.form-label {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: #495057;
  font-size: 0.9375rem;
}

/* Modern Table Styles */
.table {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.table thead th {
  background: linear-gradient(to bottom, #f8f9fa, #e9ecef);
  border-bottom: 2px solid #dee2e6;
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.8125rem;
  letter-spacing: 0.5px;
  padding: 1rem;
}

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

.table tbody tr:hover {
  background-color: #f8f9fa;
  transform: scale(1.005);
}

.table-striped tbody tr:nth-of-type(odd) {
  background-color: rgba(0, 0, 0, 0.02);
}

/* Modern Badges */
.badge {
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.3px;
  box-shadow: var(--shadow-xs);
}

.badge-primary {
  background: var(--gradient-primary);
}

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

.badge-info {
  background: var(--gradient-info);
}

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

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

/* Modern Modal */
.modal-content {
  border-radius: var(--radius-xl);
  border: none;
  box-shadow: var(--shadow-2xl);
}

.modal-header {
  background: linear-gradient(to bottom, #ffffff, #f8f9fa);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  padding: 1.5rem;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  background: linear-gradient(to top, #ffffff, #f8f9fa);
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  padding: 1rem 1.5rem;
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

/* Modern Alerts */
.alert {
  border-radius: var(--radius-lg);
  border: none;
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid;
}

.alert-primary {
  background: linear-gradient(to right, rgba(70, 127, 207, 0.1), rgba(70, 127, 207, 0.05));
  border-left-color: var(--bs-primary);
  color: var(--bs-primary-dark);
}

.alert-success {
  background: linear-gradient(to right, rgba(94, 186, 0, 0.1), rgba(94, 186, 0, 0.05));
  border-left-color: var(--bs-success);
  color: var(--bs-success-dark);
}

.alert-danger {
  background: linear-gradient(to right, rgba(205, 32, 31, 0.1), rgba(205, 32, 31, 0.05));
  border-left-color: var(--bs-danger);
  color: #a91a1a;
}

.alert-warning {
  background: linear-gradient(to right, rgba(241, 196, 15, 0.1), rgba(241, 196, 15, 0.05));
  border-left-color: var(--bs-warning);
  color: #c19d0c;
}

.alert-info {
  background: linear-gradient(to right, rgba(69, 170, 242, 0.1), rgba(69, 170, 242, 0.05));
  border-left-color: var(--bs-info);
  color: #3889c2;
}

/* Modern Dropdown */
.dropdown-menu {
  border-radius: var(--radius-lg);
  border: none;
  box-shadow: var(--shadow-xl);
  padding: 0.5rem;
}

.dropdown-item {
  border-radius: var(--radius-sm);
  padding: 0.625rem 1rem;
  transition: all var(--transition-fast);
  margin: 0.125rem 0;
}

.dropdown-item:hover {
  background-color: var(--bs-primary);
  color: white;
  transform: translateX(4px);
}

/* Modern Navbar */
.navbar {
  box-shadow: var(--shadow-md);
  padding: 1rem 0;
  backdrop-filter: blur(10px);
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.5rem;
  transition: all var(--transition-base);
}

.navbar-brand:hover {
  transform: scale(1.05);
}

.nav-link {
  font-weight: 500;
  transition: all var(--transition-base);
  border-radius: var(--radius-sm);
  padding: 0.5rem 1rem;
}

.nav-link:hover {
  transform: translateY(-2px);
}

/* Modern Progress Bar */
.progress {
  height: 1rem;
  border-radius: var(--radius-full);
  background-color: #e9ecef;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.progress-bar {
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

/* Modern Utilities */
.shadow-modern {
  box-shadow: var(--card-shadow) !important;
}

.shadow-hover-modern:hover {
  box-shadow: var(--card-shadow-hover) !important;
}

.rounded-modern {
  border-radius: var(--radius-lg) !important;
}

.rounded-modern-xl {
  border-radius: var(--radius-xl) !important;
}

/* Gradient Backgrounds */
.bg-gradient-primary {
  background: var(--gradient-primary) !important;
}

.bg-gradient-success {
  background: var(--gradient-success) !important;
}

.bg-gradient-info {
  background: var(--gradient-info) !important;
}

.bg-gradient-warning {
  background: var(--gradient-warning) !important;
}

.bg-gradient-danger {
  background: var(--gradient-danger) !important;
}

/* Animation Classes */
.animate-fade-in {
  animation: fadeIn var(--transition-base) ease-in;
}

.animate-slide-up {
  animation: slideUp var(--transition-base) ease-out;
}

.animate-scale-in {
  animation: scaleIn var(--transition-base) ease-out;
}

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

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

@keyframes scaleIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

/* Responsive Design Enhancements */
@media (max-width: 767.98px) {
  .card {
    border-radius: var(--radius-md);
  }
  
  .btn {
    width: 100%;
    margin-bottom: 0.5rem;
  }
  
  .modal-content {
    border-radius: var(--radius-lg);
  }
}

/* Hover Effects */
.hover-lift {
  transition: all var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.hover-scale {
  transition: transform var(--transition-base);
}

.hover-scale:hover {
  transform: scale(1.05);
}

/* Modern Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

p {
  line-height: 1.6;
  margin-bottom: 1rem;
}

/* Glass Morphism Effect */
.glass-effect {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: var(--shadow-lg);
}