:root {
  --bg-dark: #0a0a12;
  --bg-card: #12121f;
  --bg-card-hover: #1a1a2f;
  --text-primary: #ffffff;
  --text-secondary: #a0a0b0;
  --text-muted: #606070;
  --accent: #ff4444;
  --accent-glow: rgba(255, 68, 68, 0.3);
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --border: rgba(255, 255, 255, 0.08);
}

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

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

.stars {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background: 
    radial-gradient(1px 1px at 20% 30%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 40% 70%, rgba(255,255,255,0.2) 0%, transparent 100%),
    radial-gradient(1px 1px at 50% 160%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(2px 2px at 90% 40%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 70% 90%, rgba(255,255,255,0.2) 0%, transparent 100%),
    radial-gradient(1px 1px at 80% 10%, rgba(255,255,255,0.3) 0%, transparent 100%);
  background-size: 200px 200px;
  animation: stars 20s linear infinite;
  z-index: 0;
}

@keyframes stars {
  from { transform: translateY(0); }
  to { transform: translateY(-200px); }
}

main, .nav, .footer {
  position: relative;
  z-index: 1;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(18, 18, 31, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-mascot {
  font-size: 1.75rem;
}

.nav-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.nav-name {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--accent);
}

.nav-tagline {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-tagline:hover {
  color: var(--accent);
}

.nav-tagline strong {
  font-weight: 700;
  color: #fff;
}

.nav-links {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.nav-btn {
  background: var(--accent);
  color: white;
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s;
}

.nav-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.nav-contact {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.nav-contact:hover {
  background: rgba(139, 92, 246, 0.2);
  border-color: rgba(139, 92, 246, 0.5);
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.2);
}

.hero {
  text-align: center;
  padding: 5rem 2rem;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-content {
  max-width: 700px;
}

.mascot-large {
  font-size: 5rem;
  margin-bottom: 1rem;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.highlight {
  color: var(--accent);
}

.hero-tagline {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--accent);
  color: white;
  padding: 0.75rem 2rem;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: transform 0.2s, box-shadow 0.2s;
  display: inline-block;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 25px var(--accent-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  padding: 0.75rem 2rem;
  border-radius: 10px;
  border: 2px solid var(--border);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: border-color 0.2s, background 0.2s;
  display: inline-block;
}

.btn-secondary:hover {
  border-color: var(--accent);
  background: rgba(255, 68, 68, 0.1);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  padding: 0.5rem 1.5rem;
  border-radius: 8px;
  border: 2px solid var(--accent);
  text-decoration: none;
  font-weight: 600;
  transition: background 0.2s;
  display: inline-block;
}

.btn-outline:hover {
  background: rgba(255, 68, 68, 0.1);
}

section {
  padding: 5rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

section h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 3rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  text-align: center;
  transition: transform 0.2s, border-color 0.2s;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
}

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

.feature-card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

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

.quickstart-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.step-card {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  text-align: center;
}

.step-number {
  width: 40px;
  height: 40px;
  background: var(--accent);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  margin: 0 auto 1rem;
}

.step-card h3 {
  margin-bottom: 1rem;
}

.step-card p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.code-block {
  background: var(--bg-dark);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
}

.code-block code {
  font-family: "SF Mono", Monaco, monospace;
  font-size: 0.9rem;
  color: var(--success);
}

.code-block.sample code {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.8rem;
  transition: background 0.2s;
}

.copy-btn:hover {
  background: var(--bg-card-hover);
}

.comparison {
  background: var(--bg-card);
  border-radius: 24px;
  padding: 4rem 2rem;
  margin: 3rem auto;
  border: 1px solid var(--border);
}

.comparison-intro {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.comparison-table {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 700px;
  margin: 0 auto;
}

.comparison-col {
  background: var(--bg-dark);
  border-radius: 16px;
  padding: 2rem;
  border: 2px solid var(--border);
  position: relative;
}

.comparison-col.full {
  border-color: var(--accent);
}

.plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: white;
  padding: 0.25rem 1rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.plan-header {
  text-align: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.plan-header h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.plan-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
}

.comparison-col.free .plan-price {
  color: var(--success);
}

.plan-features {
  list-style: none;
  margin-bottom: 2rem;
}

.plan-features li {
  padding: 0.5rem 0;
  font-size: 0.95rem;
}

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

.comparison-col .btn-primary,
.comparison-col .btn-outline {
  display: block;
  text-align: center;
}

.security-note {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: 16px;
  padding: 2rem;
  max-width: 700px;
  margin: 0 auto;
}

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

.security-content h3 {
  margin-bottom: 0.5rem;
}

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

.security-content a {
  color: var(--accent);
}

.footer {
  text-align: center;
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
}

.footer-links {
  margin-bottom: 1rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-links .divider {
  margin: 0 0.75rem;
}

.footer-copyright {
  font-size: 0.85rem;
}

@media (max-width: 600px) {
  .nav {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero-tagline {
    font-size: 1rem;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .mascot-large {
    font-size: 3.5rem;
  }
  
  section {
    padding: 3rem 1rem;
  }
  
  .comparison {
    padding: 2rem 1rem;
  }
  
  .footer-links .divider {
    display: none;
  }
  
  .footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }
}