/*
 * Modern Legal Design System
 * Inspired by Svelte.dev's clean, modern aesthetic
 * Optimized for text-heavy legal content
 */

/* CSS Reset and Base Variables */
:root {
  /* Core Color System */
  --color-background: #ffffff;
  --color-surface: #f8fafc;
  --color-border: #e2e8f0;
  --color-text: #1e293b;
  --color-text-secondary: #475569;
  --color-text-muted: #64748b;
  
  /* Brand Colors */
  --color-brand-primary: #1e293b;
  --color-brand-secondary: #334155;
  --color-interactive: #3b82f6;
  --color-warning: #f59e0b;
  --color-success: #10b981;
  --color-error: #ef4444;
  
  /* Typography */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-serif: 'Playfair Display', Georgia, serif;
  --font-family-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
  
  /* 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;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-2xl: 16px;
  
  /* 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);
  
  /* Transitions */
  --transition-fast: 150ms ease-out;
  --transition-base: 250ms ease-out;
  --transition-slow: 350ms ease-out;
  
  /* Layout */
  --header-height: 80px;
  --container-max: 1400px;
}

/* Dark Theme */
[data-theme="dark"], .dark-theme {
  --color-background: #0f172a;
  --color-surface: #1e293b;
  --color-border: #334155;
  --color-text: #f1f5f9;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #94a3b8;
  --color-brand-primary: #f1f5f9;
  --color-brand-secondary: #cbd5e1;
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family-sans);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  min-height: 100vh;
  position: relative;
}

/* Modern background with subtle gradient */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 25% 25%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(245, 158, 11, 0.05) 0%, transparent 50%);
  z-index: -1;
  pointer-events: none;
}

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

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: var(--transition-base);
}

[data-theme="dark"] .header, .dark-theme .header {
  background: rgba(15, 23, 42, 0.85);
}

.header-content {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  font-family: var(--font-family-serif);
  font-weight: 600;
  font-size: 1.5rem;
  color: var(--color-text);
  transition: var(--transition-base);
}

.logo:hover {
  color: var(--color-interactive);
  transform: translateY(-1px);
}

.logo-symbol {
  font-size: 2rem;
  margin-right: var(--space-sm);
  background: linear-gradient(135deg, var(--color-interactive), var(--color-warning));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-text .zoom {
  color: var(--color-interactive);
}

.logo-text .law {
  color: var(--color-text);
}

/* Navigation */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: var(--transition-base);
}

.theme-toggle:hover {
  border-color: var(--color-interactive);
  color: var(--color-interactive);
  transform: translateY(-1px);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-interactive);
  text-decoration: none;
  transition: var(--transition-base);
}

.breadcrumb a:hover {
  color: var(--color-text);
}

.breadcrumb-separator {
  color: var(--color-border);
}

/* Hero Section */
.hero {
  padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-3xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  position: relative;
  z-index: 1;
}

.hero-title {
  font-family: var(--font-family-serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-2xl);
  margin-top: var(--space-2xl);
  flex-wrap: wrap;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-interactive);
  display: block;
  line-height: 1;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
  margin-top: var(--space-xs);
}

/* Main Content */
.main-content {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl) var(--space-3xl);
}

/* Search Section */
.search-section {
  margin-bottom: var(--space-3xl);
}

.search-card {
  background: linear-gradient(135deg, var(--color-interactive), #2563eb);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  text-align: center;
  color: white;
  text-decoration: none;
  display: block;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.search-card::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: left 0.5s;
}

.search-card:hover::before {
  left: 100%;
}

.search-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  color: white;
}

.search-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  opacity: 0.9;
}

.search-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

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

/* Sections */
.section {
  margin-bottom: var(--space-3xl);
}

.section-header {
  display: flex;
  align-items: center;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--color-border);
}

.section-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-interactive), var(--color-warning));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  margin-right: var(--space-md);
  flex-shrink: 0;
}

.section-title {
  font-family: var(--font-family-serif);
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

/* Year Grid */
.year-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-lg);
}

.year-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  text-decoration: none;
  color: var(--color-text);
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.year-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-interactive), var(--color-warning));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.year-card:hover::before {
  transform: scaleX(1);
}

.year-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-interactive);
}

.year-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  line-height: 1;
}

.year-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

/* EU Card */
.eu-card {
  background: linear-gradient(135deg, #fef3c7, #fbbf24);
  border: none;
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--color-brand-primary);
  transition: var(--transition-base);
  font-size: 1.25rem;
  font-weight: 600;
  position: relative;
  overflow: hidden;
}

.eu-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s;
}

.eu-card:hover::before {
  left: 100%;
}

.eu-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  color: var(--color-brand-primary);
}

.eu-icon {
  font-size: 2rem;
  margin-right: var(--space-md);
}

/* Footer */
.footer {
  background: var(--color-brand-primary);
  color: white;
  padding: var(--space-2xl) 0 var(--space-md);
  margin-top: var(--space-3xl);
}

.footer-content {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

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

.footer-section h3 {
  font-family: var(--font-family-serif);
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
  color: var(--color-warning);
}

.footer-links {
  list-style: none;
}

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

.footer-links a {
  color: #cbd5e1;
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-warning);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-md);
  text-align: center;
  color: #94a3b8;
  font-size: 0.875rem;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

.fade-in-up-delay-1 {
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.fade-in-up-delay-2 {
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

.fade-in-up-delay-3 {
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

/* Responsive Design */
@media (max-width: 640px) {
  .header-content {
    padding: 0 var(--space-md);
    flex-direction: column;
    gap: var(--space-md);
  }
}

@media (min-width: 641px) and (max-width: 768px) {
  .header-content {
    padding: 0 var(--space-md);
  }
  
  .breadcrumb {
    font-size: 0.75rem;
  }
}

@media (max-width: 768px) {
  .logo {
    font-size: 1.25rem;
  }
  
  .logo-symbol {
    font-size: 1.5rem;
    margin-right: var(--space-xs);
  }
  
  .hero {
    padding: calc(var(--header-height) + var(--space-xl)) 0 var(--space-xl);
  }
  
  .hero-content {
    padding: 0 var(--space-md);
  }
  
  .hero-stats {
    gap: var(--space-xl);
  }
  
  .main-content {
    padding: 0 var(--space-md) var(--space-xl);
  }
  
  .year-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--space-md);
  }
  
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }
  
  .section-icon {
    margin-right: 0;
  }
  
  .footer-content {
    padding: 0 var(--space-md);
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

/* Button Components */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-base);
}

.btn-primary {
  background: var(--color-interactive);
  color: white;
  border-color: var(--color-interactive);
}

.btn-primary:hover {
  background: #2563eb;
  border-color: #2563eb;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Card Components */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-interactive);
}

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

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.form-input,
.form-select {
  width: 100%;
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-background);
  color: var(--color-text);
  font-size: 1rem;
  transition: var(--transition-base);
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-interactive);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Badge Components */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary {
  background: var(--color-interactive);
  color: white;
}

.badge-muted {
  background: var(--color-border);
  color: var(--color-text-muted);
}

.badge-meta {
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

/* Utility Classes */
.flex {
  display: flex;
}

.grid {
  display: grid;
}

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

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

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

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

.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }

.flex-1 {
  flex: 1;
}

.flex-wrap {
  flex-wrap: wrap;
}

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

.text-lg {
  font-size: 1.125rem;
}

.text-sm {
  font-size: 0.875rem;
}

.text-muted {
  color: var(--color-text-muted);
}

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

.font-semibold {
  font-weight: 600;
}

.ml-4 {
  margin-left: 1rem;
}

.mt-6 {
  margin-top: 1.5rem;
}

.mb-4 {
  margin-bottom: 1rem;
}

.mb-8 {
  margin-bottom: 2rem;
}

.p-0 {
  padding: 0;
}

.hidden {
  display: none;
}

/* Improved Card Components */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition-base);
}

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

.card-header {
  padding: var(--space-lg);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

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

.card-footer {
  padding: var(--space-lg);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.card-title {
  font-family: var(--font-family-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

/* Navigation and Breadcrumb Updates */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  font-family: var(--font-family-serif);
  font-weight: 600;
  font-size: 1.5rem;
  color: var(--color-text);
  transition: var(--transition-base);
}

.nav-brand:hover {
  color: var(--color-interactive);
  transform: translateY(-1px);
}

.nav-brand-icon {
  font-size: 2rem;
  margin-right: var(--space-sm);
  background: linear-gradient(135deg, var(--color-interactive), var(--color-warning));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Button Components Enhanced */
.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.btn-ghost:hover {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-interactive);
}

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

.btn-secondary:hover {
  background: var(--color-interactive);
  color: white;
  border-color: var(--color-interactive);
}

/* Search-specific styles */
.search-suggestions,
#autocompleteSuggestions {
  position: absolute;
  z-index: 1000;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  max-height: 300px;
  overflow-y: auto;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 4px;
}

.suggestion-item {
  padding: var(--space-md);
  cursor: pointer;
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-fast);
  color: var(--color-text);
}

.suggestion-item:hover {
  background: var(--color-interactive);
  color: white;
}

.suggestion-item:last-child {
  border-bottom: none;
}

/* Search form positioning */
.form-group {
  position: relative;
  margin-bottom: var(--space-lg);
}

/* Ensure the grid layout stays stable when suggestions appear */
#searchForm .grid {
  align-items: start;
}

#searchForm .form-group:has(#autocompleteSuggestions) {
  z-index: 1001;
}

/* Loading spinner */
.loading-spinner {
  width: 3rem;
  height: 3rem;
  border: 3px solid var(--color-border);
  border-top: 3px solid var(--color-interactive);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--space-md);
}

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

/* Table Components for Navigation Pages */
.page-header {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-lg) 0;
}

[data-theme="dark"] .page-header, .dark-theme .page-header {
  background: rgba(15, 23, 42, 0.95);
}

.page-header-content {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  text-align: center;
}

.page-title {
  font-family: var(--font-family-serif);
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.page-subtitle {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
}

/* Utility Classes */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.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); }