@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

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

:root {
  --bg-primary: #0f1419;
  --bg-secondary: #1a1f29;
  --bg-card: #232a35;
  --text-primary: #e8e8e8;
  --text-secondary: #9ca3af;
  --accent-primary: #5b9dd9;
  --accent-secondary: #4a8bc2;
  --accent-light: #7db5e8;
  --accent-gradient: linear-gradient(135deg, #5b9dd9 0%, #4a8bc2 100%);
  --border-color: #2d3748;
  --code-bg: #0a0e14;
  --shadow-color: rgba(91, 157, 217, 0.2);
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header */
header {
  padding: 2rem 0;
  position: sticky;
  top: 0;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 1.8rem;
  font-weight: bold;
  text-decoration: none;
  transition: opacity 0.3s ease;
}

.logo:hover {
  opacity: 0.8;
}

.logo-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-img {
  width: 180px;
  height: auto;
  max-height: 180px;
  object-fit: contain;
  display: block;
  margin: 0 auto;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
  font-size: 0.95rem;
}

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

/* Hero Section */
.hero {
  padding: 3rem 0 4rem;
  text-align: center;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(
    circle,
    rgba(91, 157, 217, 0.15) 0%,
    rgba(74, 139, 194, 0.08) 40%,
    transparent 70%
  );
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--accent-light);
  margin-bottom: 2rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero h1 .gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.3rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-features {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero-feature {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.hero-feature::before {
  content: '•';
  color: var(--accent-primary);
  font-size: 1.5rem;
}

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

.btn {
  padding: 0.9rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  display: inline-block;
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  border: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px var(--shadow-color);
}

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

.btn-secondary:hover {
  border-color: var(--accent-primary);
  background: rgba(91, 157, 217, 0.1);
}

/* Features Section */
.section {
  padding: 3rem 0;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 4rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.3s ease;
}

.feature-card:hover {
  border-color: var(--accent-primary);
  transform: translateY(-4px);
  box-shadow: 0 10px 40px var(--shadow-color);
}

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

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* Code Section */
.code-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.code-container {
  position: relative;
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
}

.code-title {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-family: 'Courier New', monospace;
}

.copy-btn {
  padding: 0.4rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s ease;
  font-family: 'Outfit', sans-serif;
}

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

pre {
  padding: 2rem 1.5rem;
  overflow-x: auto;
  margin: 0;
}

code {
  font-family: 'Courier New', Monaco, monospace;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-primary);
}

.code-comment {
  color: #6a9955;
}

.code-keyword {
  color: #569cd6;
}

.code-string {
  color: #ce9178;
}

.code-function {
  color: #dcdcaa;
}

.code-number {
  color: #b5cea8;
}

/* Load Balancing Algorithms Section */
.algorithms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.algorithm-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.algorithm-card:hover {
  border-color: var(--accent-primary);
  box-shadow: 0 8px 24px rgba(91, 157, 217, 0.15);
  transform: translateY(-2px);
}

.algorithm-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.algorithm-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.algorithm-card .code-container {
  margin-top: auto;
  font-size: 0.85rem;
}

.algorithm-card .code-header {
  padding: 0.75rem 1rem;
}

.algorithm-card pre {
  padding: 1rem;
  margin: 0;
}

.algorithm-card code {
  font-size: 0.85rem;
  line-height: 1.6;
}

/* Stats Section */
.stats-section {
  background: var(--bg-secondary);
  text-align: center;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
}

.stat-item {
  padding: 1.5rem;
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Footer */
footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.footer-links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
  font-size: 0.95rem;
}

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

.footer-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

/* Responsive */
@media (max-width: 768px) {
  .hero {
    padding: 2rem 0 3rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
  }

  .section {
    padding: 2rem 0;
  }

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

  .features-grid {
    grid-template-columns: 1fr;
  }

  .algorithms-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .algorithm-card .code-container {
    font-size: 0.8rem;
  }

  .algorithm-card code {
    font-size: 0.8rem;
  }

  .nav-links {
    gap: 1rem;
    font-size: 0.85rem;
  }

  .logo {
    font-size: 1.4rem;
  }

  .logo-img {
    width: 120px;
    max-height: 120px;
  }

  .cta-buttons {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .hero {
    padding: 1.5rem 0 2rem;
  }

  .logo-img {
    width: 100px;
    max-height: 100px;
  }

  .hero-badge {
    font-size: 0.75rem;
    padding: 0.4rem 0.8rem;
  }

  .hero-features {
    gap: 1rem;
  }

  .hero-feature {
    font-size: 0.85rem;
  }

  .nav-links {
    gap: 0.5rem;
  }

  .header-content {
    flex-direction: column;
    gap: 1rem;
  }
}

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

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

/* Security Showcase Section */
.security-showcase {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  margin-top: 3rem;
}

.security-demo {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 2rem;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.security-demo:hover {
  border-color: var(--accent-primary);
  box-shadow: 0 8px 32px var(--shadow-color);
  transform: translateY(-2px);
}

.security-demo-header {
  margin-bottom: 1.5rem;
}

.security-demo-header h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 600;
}

.security-demo-header p {
  color: var(--text-secondary);
  font-size: 1rem;
}

.security-benefits {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}

.benefit {
  background: rgba(91, 157, 217, 0.1);
  color: var(--accent-light);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid rgba(91, 157, 217, 0.2);
}

/* Responsive adjustments for security showcase */
@media (max-width: 768px) {
  .security-demo {
    padding: 1.5rem;
  }

  .security-demo-header h3 {
    font-size: 1.25rem;
  }

  .security-benefits {
    gap: 0.75rem;
  }

  .benefit {
    font-size: 0.85rem;
    padding: 0.4rem 0.8rem;
  }
}

/* Enhanced code blocks for security demos */
.security-demo .code-container {
  margin-top: 1rem;
}

.security-demo .code-container pre {
  max-height: 500px;
  overflow-y: auto;
}

/* Syntax highlighting enhancements */
.code-regex {
  color: #f97583;
  font-weight: 500;
}