:root {
  /* Color Palette - Clean Corporate Professional */
  --primary-color: #1e3a8a;
  --secondary-color: #374151;
  --background-color: #ffffff;
  --footer-background: #f9fafb;
  --button-color: #1e3a8a;
  --section-bg-1: #ffffff;
  --section-bg-2: #f9fafb;
  --section-bg-3: #ffffff;
  
  /* Professional Color System */
  --text-primary: #111827;
  --text-secondary: #6b7280;
  --text-light: #9ca3af;
  --border-color: #e5e7eb;
  --hover-primary: #1e40af;
  --accent-color: #059669;
  --warning-color: #d97706;
  --error-color: #dc2626;
  
  /* Typography Scale */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  
  /* Spacing System */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.125rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  
  /* Shadows - Subtle Professional */
  --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);
}

/* Base Styles - Clean Corporate Foundation */
* {
  box-sizing: border-box;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background-color);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin: 0 0 var(--spacing-md) 0;
  letter-spacing: -0.025em;
}

h1 {
  font-size: var(--font-size-4xl);
  font-weight: 800;
}

h2 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
}

h3 {
  font-size: var(--font-size-2xl);
  font-weight: 600;
}

h4 {
  font-size: var(--font-size-xl);
  font-weight: 600;
}

h5 {
  font-size: var(--font-size-lg);
  font-weight: 500;
}

h6 {
  font-size: var(--font-size-base);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

p {
  margin: 0 0 var(--spacing-md) 0;
  color: var(--text-secondary);
  line-height: 1.7;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.2s ease-in-out;
}

a:hover {
  color: var(--hover-primary);
  text-decoration: underline;
}

/* Focus States for Accessibility */
button:focus,
input:focus,
textarea:focus,
select:focus,
a:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Professional Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
  min-height: 44px;
  position: relative;
  overflow: hidden;
}

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

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

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

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

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

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

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

/* Professional Card System */
.card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease-in-out;
  position: relative;
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: #d1d5db;
  transform: translateY(-2px);
}

.card-elevated {
  box-shadow: var(--shadow-lg);
  border: none;
}

.card-elevated:hover {
  box-shadow: var(--shadow-xl);
}

/* Clean Section Backgrounds */
.section {
  padding: var(--spacing-3xl) 0;
}

.section-alt {
  background-color: var(--footer-background);
}

/* Professional Header */
.header {
  background: white;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.95);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
}

.logo:hover {
  color: var(--hover-primary);
  text-decoration: none;
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all 0.2s ease-in-out;
}

.nav-link:hover {
  color: var(--primary-color);
  background-color: #f3f4f6;
  text-decoration: none;
}

.nav-link.active {
  color: var(--primary-color);
  background-color: #eff6ff;
}

/* Professional Footer */
.footer {
  background-color: var(--footer-background);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-2xl) 0;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
}

.footer-section h4 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-lg);
}

.footer-section p,
.footer-section a {
  color: var(--text-light);
  margin-bottom: var(--spacing-sm);
}

.footer-section a:hover {
  color: var(--primary-color);
  text-decoration: none;
}

/* Clean Form System */
.form-group {
  margin-bottom: var(--spacing-lg);
}

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

.form-input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background-color: white;
  transition: border-color 0.2s ease-in-out;
}

.form-input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

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

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 0.5rem center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: 2.5rem;
}

/* Hero Section */
.hero {
  padding: var(--spacing-3xl) 0;
  text-align: center;
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.hero h1 {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.1;
}

.hero p {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Alert System */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
  border: 1px solid;
}

.alert-info {
  background-color: #eff6ff;
  color: #1e40af;
  border-color: #bfdbfe;
}

.alert-success {
  background-color: #f0fdf4;
  color: #166534;
  border-color: #bbf7d0;
}

.alert-warning {
  background-color: #fffbeb;
  color: #92400e;
  border-color: #fed7aa;
}

.alert-error {
  background-color: #fef2f2;
  color: #991b1b;
  border-color: #fecaca;
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* Flex Utilities */
.flex {
  display: flex;
}

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

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

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

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

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

/* Spacing Utilities */
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

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

/* Text Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-sm { font-size: var(--font-size-sm); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }

.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

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

/* Professional Loading States */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* Professional Hover Effects */
.hover-lift {
  transition: transform 0.2s ease-in-out;
}

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

/* Professional Dividers */
.divider {
  height: 1px;
  background-color: var(--border-color);
  margin: var(--spacing-xl) 0;
}

.divider-vertical {
  width: 1px;
  height: 100%;
  background-color: var(--border-color);
  margin: 0 var(--spacing-lg);
}

/* Professional Badge System */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.badge-primary {
  background-color: #eff6ff;
  color: var(--primary-color);
}

.badge-success {
  background-color: #f0fdf4;
  color: var(--accent-color);
}

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

.badge-error {
  background-color: #fef2f2;
  color: var(--error-color);
}

/* Responsive Design */
@media (max-width: 768px) {
  .header-container {
    padding: 0 var(--spacing-md);
  }
  
  .hero h1 {
    font-size: var(--font-size-3xl);
  }
  
  .hero p {
    font-size: var(--font-size-base);
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
  
  .footer-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    padding: 0 var(--spacing-md);
  }
  
  .card {
    padding: var(--spacing-lg);
  }
  
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
  
  .nav {
    gap: var(--spacing-md);
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .header-container {
    height: 56px;
    flex-direction: column;
    padding: var(--spacing-sm) var(--spacing-md);
    height: auto;
  }
  
  .nav {
    margin-top: var(--spacing-sm);
  }
  
  .hero {
    padding: var(--spacing-2xl) 0;
  }
  
  .card {
    padding: var(--spacing-md);
  }
}

/* Print Styles */
@media print {
  .header,
  .footer,
  .btn {
    display: none;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.4;
  }
  
  .section {
    padding: 0;
  }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --border-color: #000000;
    --text-secondary: #000000;
    --shadow-sm: 0 2px 4px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 8px 0 rgb(0 0 0 / 0.3);
  }
  
  .card {
    border: 2px solid #000000;
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* Dark Mode Preparation (for future implementation) */
@media (prefers-color-scheme: dark) {
  /* This can be expanded when dark mode is needed */
  /* Currently maintaining the clean corporate light theme as specified */
}

/* Professional Table Styles */
.table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

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

.table th {
  background-color: var(--footer-background);
  font-weight: 600;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

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

.table tr:hover {
  background-color: #f9fafb;
}

/* Professional Modal/Dialog Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--spacing-lg);
}

.modal {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

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

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

/* Professional Progress Indicators */
.progress {
  width: 100%;
  height: 8px;
  background-color: var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background-color: var(--primary-color);
  border-radius: var(--radius-sm);
  transition: width 0.3s ease-in-out;
}

/* Professional Toggle/Switch Styles */
.toggle {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--border-color);
  border-radius: 24px;
  transition: 0.3s;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  border-radius: 50%;
  transition: 0.3s;
}

.toggle input:checked + .toggle-slider {
  background-color: var(--primary-color);
}

.toggle input:checked + .toggle-slider:before {
  transform: translateX(20px);
}


/* Cookie Banner Additional Styles for Tailwind */
.cookie-banner-hover-effect:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

@media (prefers-reduced-motion: reduce) {
    .cookie-banner-hover-effect:hover {
        transform: none;
    }
}