/* BIAS Showcase - Modern CSS Stylesheet */

:root {
  --primary-color: #2563eb;
  --primary-dark: #1e40af;
  --primary-light: #3b82f6;
  --secondary-color: #10b981;
  --accent-color: #f59e0b;
  --dark-bg: #0f172a;
  --dark-surface: #1e293b;
  --light-bg: #f8fafc;
  --light-surface: #ffffff;
  --text-dark: #0f172a;
  --text-light: #f8fafc;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --success-color: #10b981;
  --error-color: #ef4444;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--light-bg);
}

/* Header & Navigation */
header {
  background: var(--dark-bg);
  color: var(--text-light);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  background: linear-gradient(135deg, var(--primary-light), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-light);
  text-decoration: none;
  transition: color 0.3s;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--primary-light);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-surface) 100%);
  color: var(--text-light);
  padding: 6rem 2rem;
  text-align: center;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--primary-light), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .subtitle {
  font-size: 1.5rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.hero .tagline {
  font-size: 1.25rem;
  margin-bottom: 3rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 0.875rem 2rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
  display: inline-block;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

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

.btn-secondary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

/* Stats Section */
.stats {
  background: var(--light-surface);
  padding: 4rem 2rem;
  box-shadow: 0 -4px 6px rgba(0, 0, 0, 0.05);
}

.stats-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.stat-card {
  text-align: center;
  padding: 2rem;
  background: white;
  border-radius: 1rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.stat-value {
  font-size: 3rem;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1.125rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Main Content */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.section {
  margin-bottom: 4rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 3rem;
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.feature-card {
  background: white;
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: all 0.3s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.feature-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text-dark);
}

.feature-description {
  color: var(--text-muted);
  line-height: 1.6;
}

/* Code Blocks */
.code-block {
  background: var(--dark-surface);
  color: var(--text-light);
  padding: 1.5rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  margin: 1rem 0;
  font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
  font-size: 0.9rem;
  line-height: 1.5;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.code-lang {
  color: var(--primary-light);
  font-weight: 600;
}

.copy-btn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 0.25rem 0.75rem;
  border-radius: 0.25rem;
  cursor: pointer;
  font-size: 0.875rem;
  transition: background 0.3s;
}

.copy-btn:hover {
  background: var(--primary-dark);
}

/* Comparison Table */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background: white;
  border-radius: 0.5rem;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.comparison-table th {
  background: var(--dark-bg);
  color: var(--text-light);
  padding: 1rem;
  text-align: left;
  font-weight: 600;
}

.comparison-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
}

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

.comparison-table tr:hover {
  background: var(--light-bg);
}

.highlight {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(16, 185, 129, 0.1));
  font-weight: 600;
  color: var(--primary-dark);
}

/* Footer */
footer {
  background: var(--dark-bg);
  color: var(--text-light);
  padding: 3rem 2rem;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.footer-section h3 {
  margin-bottom: 1rem;
  color: var(--primary-light);
}

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

.footer-section ul li {
  margin-bottom: 0.5rem;
}

.footer-section a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.3s;
}

.footer-section a:hover {
  color: var(--primary-light);
}

.footer-bottom {
  max-width: 1200px;
  margin: 2rem auto 0;
  padding-top: 2rem;
  border-top: 1px solid var(--dark-surface);
  text-align: center;
  color: var(--text-muted);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 0.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  margin: 0.25rem;
}

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

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

.badge-warning {
  background: var(--accent-color);
  color: white;
}

/* Status Badges (GitHub-style) */
.status-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 2rem 0;
  justify-content: center;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  height: 20px;
  border-radius: 3px;
  overflow: hidden;
  font-size: 11px;
  font-weight: 600;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

.status-badge-label {
  background: #555;
  color: white;
  padding: 0 7px;
  line-height: 20px;
}

.status-badge-value {
  padding: 0 7px;
  line-height: 20px;
}

.status-badge-value.success {
  background: #4c1;
  color: white;
}

.status-badge-value.info {
  background: #007ec6;
  color: white;
}

.status-badge-value.warning {
  background: #dfb317;
  color: white;
}

/* Chart containers */
.chart-container {
  position: relative;
  height: 400px;
  margin: 2rem 0;
  background: white;
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.chart-container.small {
  height: 300px;
}

.chart-container.large {
  height: 500px;
}

.chart-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

@media (max-width: 768px) {
  .chart-container {
    height: 300px;
    padding: 1rem;
  }

  .chart-container.large {
    height: 400px;
  }

  .status-badges {
    gap: 0.25rem;
  }

  .status-badge {
    font-size: 10px;
  }
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .hero .subtitle {
    font-size: 1.25rem;
  }

  .nav-links {
    flex-direction: column;
    gap: 1rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .container {
    padding: 2rem 1rem;
  }
}

/* Loading Animation */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.loading {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}

/* Selection */
::selection {
  background: var(--primary-light);
  color: white;
}