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

:root {
  --bg: #09090b;
  --bg-subtle: #0f0f12;
  --bg-card: #131316;
  --text: #fafafa;
  --text-secondary: #a1a1aa;
  --text-dim: #71717a;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --green: #22c55e;
  --border: #1e1e24;
  --radius: 16px;
  --radius-sm: 10px;
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
h1, h2, h3 { line-height: 1.15; font-weight: 800; letter-spacing: -0.03em; }
.section-sub { color: var(--text-secondary); font-size: 1.15rem; max-width: 480px; margin: 0 auto 3.5rem; text-align: center; }

/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 28px; border-radius: var(--radius-sm);
  font-weight: 600; font-size: 0.95rem; text-decoration: none;
  border: 1px solid transparent; cursor: pointer; transition: all 0.2s;
}
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-light); border-color: var(--accent-light); }
.btn-ghost { background: transparent; color: var(--text-secondary); border-color: var(--border); }
.btn-ghost:hover { color: var(--text); border-color: var(--text-dim); }
.btn-sm { padding: 8px 20px; font-size: 0.88rem; }
.btn-lg { padding: 16px 36px; font-size: 1.05rem; }
.btn-full { width: 100%; }

/* === Header === */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(9, 9, 11, 0.8);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-size: 1.3rem; font-weight: 800; color: var(--text); text-decoration: none; letter-spacing: -0.5px; }
.logo span { color: var(--accent); }
.nav { display: flex; align-items: center; gap: 32px; }
.nav a { color: var(--text-secondary); text-decoration: none; font-size: 0.9rem; font-weight: 500; transition: color 0.2s; }
.nav a:hover { color: var(--text); }
.nav .btn { color: #fff; }
.mobile-toggle { display: none; background: none; border: none; color: var(--text); cursor: pointer; }

/* === Hero === */
.hero { padding: 180px 0 120px; text-align: center; }
.hero h1 {
  font-size: clamp(2.8rem, 7vw, 5rem);
  margin-bottom: 1.5rem;
  background: linear-gradient(180deg, #fff 30%, #71717a 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 1.25rem; color: var(--text-secondary);
  max-width: 520px; margin: 0 auto 2.5rem; line-height: 1.7;
}
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* === Feature Sections (editorial/alternating) === */
.feature-section { padding: 100px 0; }
.feature-section.alt { background: var(--bg-subtle); }
.feature-block {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 64px; align-items: center;
}
.feature-block.reverse { direction: rtl; }
.feature-block.reverse > * { direction: ltr; }
.feature-text h2 { font-size: 2.2rem; margin-bottom: 1rem; }
.feature-text p { font-size: 1.1rem; color: var(--text-secondary); line-height: 1.75; }
.feature-text strong { color: var(--text); }

/* Visual cards */
.visual-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 0; overflow: hidden;
}

/* Terminal */
.terminal-bar {
  display: flex; gap: 6px; padding: 14px 18px;
  background: rgba(255,255,255,0.03); border-bottom: 1px solid var(--border);
}
.terminal-bar span {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--border);
}
.terminal-bar span:first-child { background: #ef4444; }
.terminal-bar span:nth-child(2) { background: #eab308; }
.terminal-bar span:last-child { background: #22c55e; }
.terminal-body { padding: 24px; }
.terminal-body code {
  display: block; font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.88rem; color: var(--text-secondary); margin-bottom: 6px;
}
.terminal-body .dim { color: var(--text-dim); }
.terminal-body .highlight { color: var(--accent-light); font-size: 1rem; margin: 8px 0; }
.terminal-body .success { color: var(--green); }

/* DNS demo */
.dns-demo { padding: 20px; }
.dns-row {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px; border-bottom: 1px solid var(--border);
  font-family: 'SF Mono', 'Fira Code', monospace; font-size: 0.82rem;
}
.dns-row:last-child { border-bottom: none; }
.dns-type {
  background: rgba(99, 102, 241, 0.15); color: var(--accent-light);
  padding: 3px 10px; border-radius: 4px; font-weight: 600; min-width: 40px; text-align: center;
}
.dns-name { color: var(--text-secondary); flex: 1; }
.dns-value { color: var(--text-dim); }
.dns-verified { color: var(--green); }

/* Comparison */
.comparison { padding: 28px; }
.comparison-item { margin-bottom: 24px; }
.comparison-item:last-child { margin-bottom: 0; }
.comparison-label { font-size: 0.88rem; font-weight: 600; margin-bottom: 8px; color: var(--text-secondary); }
.comparison-bar {
  height: 8px; background: var(--border); border-radius: 4px; overflow: hidden; margin-bottom: 6px;
}
.bar-fill { height: 100%; border-radius: 4px; transition: width 1s ease; }
.slow .bar-fill { background: #ef4444; }
.fast .bar-fill { background: var(--green); }
.comparison-time { font-size: 0.82rem; color: var(--text-dim); font-family: 'SF Mono', monospace; }

/* Globe */
.globe-card { position: relative; min-height: 220px; padding: 28px; }
.globe-grid { position: relative; width: 100%; height: 160px; }
.globe-dot {
  position: absolute; width: 8px; height: 8px;
  background: var(--accent); border-radius: 50%;
  box-shadow: 0 0 12px var(--accent), 0 0 24px rgba(99,102,241,0.3);
  animation: pulse 2s ease-in-out infinite;
}
.globe-dot:nth-child(2n) { animation-delay: 0.5s; }
.globe-dot:nth-child(3n) { animation-delay: 1s; }
@keyframes pulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.3); }
}
.globe-label {
  text-align: center; font-size: 0.85rem; color: var(--text-dim);
  margin-top: 12px; font-weight: 500;
}

/* === Powered by === */
.powered-by {
  padding: 48px 0; text-align: center;
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.powered-by p { color: var(--text-dim); font-size: 0.9rem; font-weight: 500; letter-spacing: 0.02em; }

/* === Pricing === */
.pricing { padding: 120px 0; text-align: center; }
.pricing h2 { font-size: 2.5rem; margin-bottom: 0.5rem; }
.pricing-cards {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 24px; max-width: 780px; margin: 0 auto; text-align: left;
}
.pricing-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 36px 32px; position: relative;
}
.pricing-card.featured { border-color: var(--accent); }
.pricing-badge {
  position: absolute; top: -12px; left: 24px;
  background: var(--accent); color: #fff; font-size: 0.75rem;
  font-weight: 700; padding: 4px 14px; border-radius: 20px;
  text-transform: uppercase; letter-spacing: 0.5px;
}
.pricing-label {
  font-size: 0.82rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--accent-light); margin-bottom: 12px;
}
.pricing-price { font-size: 2.8rem; font-weight: 800; letter-spacing: -0.03em; }
.pricing-price span { font-size: 1rem; font-weight: 400; color: var(--text-dim); }
.pricing-desc { font-size: 0.9rem; color: var(--text-dim); margin: 4px 0 24px; }
.pricing-list { list-style: none; margin-bottom: 28px; }
.pricing-list li {
  padding: 7px 0 7px 24px; font-size: 0.92rem; color: var(--text-secondary);
  position: relative;
}
.pricing-list li::before {
  content: ''; position: absolute; left: 0; top: 13px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
}

/* === CTA === */
.cta { padding: 100px 0; text-align: center; }
.cta h2 { font-size: 2.5rem; margin-bottom: 0.75rem; }
.cta p { color: var(--text-secondary); font-size: 1.15rem; margin-bottom: 2rem; }

/* === Contact === */
.contact { padding: 100px 0; }
.contact h2 { text-align: center; font-size: 2rem; margin-bottom: 0.5rem; }
.contact-form { max-width: 560px; margin: 0 auto; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block; font-size: 0.85rem; font-weight: 500;
  color: var(--text-dim); margin-bottom: 6px;
}
.optional { font-weight: 400; color: #52525b; }
.form-group input,
.form-group textarea {
  width: 100%; padding: 13px 16px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text);
  font-family: inherit; font-size: 0.95rem; transition: border-color 0.2s;
}
.form-group input:focus,
.form-group textarea:focus { outline: none; border-color: var(--accent); }

/* === Footer === */
.footer { border-top: 1px solid var(--border); padding: 56px 0 0; }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; gap: 48px; }
.footer-brand p { color: var(--text-dim); font-size: 0.88rem; margin-top: 12px; line-height: 1.6; }
.footer-links { display: flex; gap: 56px; }
.footer-col h4 {
  font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-dim); margin-bottom: 14px; font-weight: 600;
}
.footer-col a {
  display: block; color: var(--text-secondary); text-decoration: none;
  font-size: 0.88rem; padding: 4px 0; transition: color 0.2s;
}
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  margin-top: 40px; padding: 24px 0;
  border-top: 1px solid var(--border);
}
.footer-bottom p { color: #3f3f46; font-size: 0.8rem; }

/* === Mobile === */
@media (max-width: 768px) {
  .nav {
    display: none; flex-direction: column;
    position: absolute; top: 64px; left: 0; right: 0;
    background: var(--bg); border-bottom: 1px solid var(--border);
    padding: 24px; gap: 16px;
  }
  .nav.open { display: flex; }
  .mobile-toggle { display: block; }
  .hero { padding: 140px 0 80px; }
  .hero h1 { font-size: 2.5rem; }
  .feature-block, .feature-block.reverse { grid-template-columns: 1fr; gap: 32px; direction: ltr; }
  .pricing-cards { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 32px; }
}