/* CSS Variables for Design System */
:root {
  /* Color Palette */
  --color-primary: #111827;
  --color-secondary: #4b5563;
  --color-background: #ffffff;
  --color-footer-bg: #000000;
  --color-button: #0f172a;
  --color-section-1: #ffffff;
  --color-section-2: #f9fafb;
  --color-section-3: #f3f4f6;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Spacing Scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.125rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  
  /* 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);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
}

/* Global Styles */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  color: var(--color-primary);
  background-color: var(--color-background);
  line-height: 1.6;
  font-size: 16px;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.05em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.04em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  letter-spacing: -0.03em;
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.875rem);
  letter-spacing: -0.02em;
}

h5 {
  font-size: 1.25rem;
  font-weight: 600;
}

h6 {
  font-size: 1.125rem;
  font-weight: 600;
}

p {
  margin: 0 0 var(--space-md) 0;
  color: var(--color-secondary);
  font-size: 1.0625rem;
  line-height: 1.7;
}

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

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

a:focus {
  outline: 2px solid var(--color-button);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

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

.section {
  padding: var(--space-4xl) 0;
}

.section-alt {
  background-color: var(--color-section-2);
}

.section-dark {
  background-color: var(--color-section-3);
}

/* Header Styles */
.header {
  background-color: var(--color-background);
  border-bottom: 1px solid #e5e7eb;
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) 0;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

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

/* Navigation */
.nav {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-xl);
}

.nav a {
  font-weight: 500;
  color: var(--color-secondary);
  padding: var(--space-sm) 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.nav a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  text-decoration: none;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  margin: 5px 0;
  transition: var(--transition-fast);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-xl);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-normal);
  letter-spacing: 0.025em;
  min-height: 48px;
}

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

.btn-primary:hover {
  background-color: #1e293b;
  border-color: #1e293b;
  color: white;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

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

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

.btn-outline {
  background-color: transparent;
  color: var(--color-secondary);
  border: 1px solid #d1d5db;
}

.btn-outline:hover {
  background-color: var(--color-section-2);
  color: var(--color-primary);
  border-color: var(--color-secondary);
  text-decoration: none;
}

/* Cards */
.card {
  background-color: var(--color-background);
  border: 1px solid #e5e7eb;
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

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

.card-header {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid #f3f4f6;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 var(--space-sm) 0;
}

.card-subtitle {
  font-size: 1rem;
  color: var(--color-secondary);
  margin: 0;
  font-weight: 500;
}

.card-body {
  color: var(--color-secondary);
  line-height: 1.7;
}

.card-footer {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid #f3f4f6;
}

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

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.025em;
}

.form-input {
  width: 100%;
  padding: var(--space-md);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-primary);
  background-color: var(--color-background);
  border: 1px solid #d1d5db;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-button);
  box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.1);
}

.form-input::placeholder {
  color: #9ca3af;
}

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

.form-select {
  appearance: none;
  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 var(--space-md) center;
  background-repeat: no-repeat;
  background-size: 16px 12px;
  padding-right: var(--space-3xl);
}

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

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

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

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-muted { color: #9ca3af; }

.bg-white { background-color: var(--color-background); }
.bg-gray-50 { background-color: var(--color-section-2); }
.bg-gray-100 { background-color: var(--color-section-3); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.p-0 { padding: 0; }
.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }

.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }

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

.w-full { width: 100%; }
.h-full { height: 100%; }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-sm { border-radius: var(--radius-sm); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* Hero Section */
.hero {
  padding: var(--space-4xl) 0;
  text-align: center;
  background: linear-gradient(135deg, var(--color-section-2) 0%, var(--color-background) 100%);
}

.hero-title {
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-xl);
  letter-spacing: -0.06em;
  line-height: 1.1;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  color: var(--color-secondary);
  margin-bottom: var(--space-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  background-color: var(--color-footer-bg);
  color: white;
  padding: var(--space-4xl) 0 var(--space-2xl) 0;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-section h4 {
  color: white;
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--space-lg);
}

.footer-section p,
.footer-section a {
  color: #d1d5db;
  line-height: 1.6;
}

.footer-section a:hover {
  color: white;
  text-decoration: none;
}

.footer-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-section li {
  margin-bottom: var(--space-sm);
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: var(--space-xl);
  text-align: center;
  color: #9ca3af;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }
  
  .section {
    padding: var(--space-2xl) 0;
  }
  
  .nav {
    display: none;
  }
  
  .menu-toggle {
    display: block;
  }
  
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 300px;
  }
  
  .card {
    padding: var(--space-xl);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-sm);
  }
  
  .hero {
    padding: var(--space-xl) 0;
  }
  
  .card {
    padding: var(--space-lg);
  }
  
  .btn {
    padding: var(--space-sm) var(--space-lg);
  }
}

/* Focus Styles for Accessibility */
*:focus {
  outline: 2px solid var(--color-button);
  outline-offset: 2px;
}

button:focus,
.btn:focus {
  outline-offset: 4px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  .card {
    border-width: 2px;
  }
  
  .btn {
    border-width: 2px;
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .btn:hover {
    transform: none;
  }
  
  .card:hover {
    transform: none;
  }
}

/* Print Styles */
@media print {
  .header,
  .footer,
  .btn,
  .menu-toggle {
    display: none;
  }
  
  .section {
    padding: var(--space-lg) 0;
  }
  
  .hero {
    padding: var(--space-lg) 0;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.4;
  }
  
  h1, h2, h3 {
    page-break-after: avoid;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #ccc;
    page-break-inside: avoid;
  }
}


/* 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;
    }
}