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

/* === Design Tokens === */
:root {
  --bg: #08080D;
  --bg-raised: #0E0E15;
  --surface: #13131D;
  --surface-hover: #1A1A28;
  --accent: #3B82F6;
  --accent-hover: #2563EB;
  --accent-glow: rgba(59, 130, 246, 0.15);
  --green: #22C55E;
  --green-glow: rgba(34, 197, 94, 0.15);
  --text: #F1F5F9;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius: 12px;
  --radius-lg: 16px;
  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* === Base === */
html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection {
  background: rgba(59, 130, 246, 0.3);
  color: #fff;
}

/* === Nav === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 24px;
  background: rgba(8, 8, 13, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 450;
  padding: 6px 12px;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}

.nav-link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.nav-link-gh {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* === Hero === */
.hero {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: 140px 24px 48px;
  text-align: center;
}

.hero-glow {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.badge svg {
  color: var(--accent);
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin-bottom: 20px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, #818CF8 50%, var(--green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.7;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

/* === Install Pill === */
.install-pill {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  margin-bottom: 40px;
}

.install-pill:hover {
  border-color: var(--border-hover);
  background: var(--surface-hover);
}

.install-pill:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.install-prompt {
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 0.875rem;
  user-select: none;
}

.install-pill code {
  font-family: var(--mono);
  font-size: 0.875rem;
  color: var(--text);
}

.copy-icon {
  color: var(--text-muted);
  transition: color var(--transition);
  flex-shrink: 0;
}

.install-pill:hover .copy-icon {
  color: var(--text-secondary);
}

.install-pill.copied {
  border-color: var(--green);
}

.install-pill.copied .copy-icon {
  color: var(--green);
}

/* === CTAs === */
.cta-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 550;
  text-decoration: none;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 24px var(--accent-glow), inset 0 1px 0 rgba(255,255,255,0.1);
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 32px rgba(59, 130, 246, 0.25), inset 0 1px 0 rgba(255,255,255,0.1);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-outline:hover {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.03);
}

/* === Terminal === */
.terminal-section {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 24px 120px;
}

.terminal {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.03);
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--border);
}

.terminal-dots {
  display: flex;
  gap: 8px;
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}

.terminal-dot:nth-child(1) { background: #FF5F57; }
.terminal-dot:nth-child(2) { background: #FEBC2E; }
.terminal-dot:nth-child(3) { background: #28C840; }

.terminal-title {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.terminal-body {
  padding: 24px;
  overflow-x: auto;
}

.terminal-body code {
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.8;
}

.t-prompt {
  color: var(--green);
  user-select: none;
}

.t-cmd {
  color: var(--text);
  font-weight: 500;
}

.t-flag {
  color: var(--accent);
}

.t-str {
  color: #FBBF24;
}

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

.t-ok {
  color: var(--green);
  font-weight: 500;
}

/* === Section Shared === */
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-align: center;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  text-align: center;
  max-width: 480px;
  margin: 0 auto 56px;
  line-height: 1.6;
}

/* === Why / Features === */
.why {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px 120px;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 32px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), transform var(--transition);
}

.feature-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.feature-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border-radius: 10px;
  color: var(--accent);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.feature-card code {
  font-family: var(--mono);
  font-size: 0.8rem;
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--text);
}

/* === How It Works === */
.how-it-works {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px 120px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.step {
  position: relative;
  text-align: left;
}

.step-header {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent-glow);
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 700;
  font-family: var(--mono);
  flex-shrink: 0;
}

.step-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border-hover), transparent);
  margin-left: 16px;
}

.step h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.step-cmd {
  display: block;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--green);
  background: var(--surface);
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  margin-bottom: 14px;
}

.step p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.step p code {
  font-family: var(--mono);
  font-size: 0.8rem;
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--text);
}

/* === Trust Levels === */
.trust-levels {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 24px 120px;
}

.trust-card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.trust-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.trust-row:last-child {
  border-bottom: none;
}

.trust-row:hover {
  background: rgba(255, 255, 255, 0.01);
}

.trust-badge {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--text-muted);
  background: var(--surface);
  padding: 4px 10px;
  border-radius: 6px;
  flex-shrink: 0;
}

.trust-badge.active {
  color: var(--accent);
  background: var(--accent-glow);
}

.trust-info {
  flex: 1;
  min-width: 0;
}

.trust-name {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 2px;
}

.trust-desc {
  display: block;
  color: var(--text-muted);
  font-size: 0.8rem;
  line-height: 1.4;
}

.trust-status {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.trust-status.available {
  color: var(--green);
}

.trust-row.dimmed {
  opacity: 0.45;
}

/* === OSS CTA === */
.oss-cta {
  padding: 0 24px 120px;
}

.oss-inner {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
  padding: 56px 40px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.oss-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.oss-inner h2 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.oss-inner p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 32px;
}

/* === Footer === */
footer {
  padding: 0 24px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

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

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color var(--transition);
}

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

.footer-copy {
  color: var(--text-muted);
  font-size: 0.8rem;
}

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

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

/* === Scroll Animations === */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === Responsive === */
@media (max-width: 768px) {
  .hero {
    padding: 100px 20px 40px;
  }

  .hero h1 {
    font-size: clamp(2rem, 8vw, 2.8rem);
  }

  .features {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feature-card {
    padding: 24px;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .step-line {
    display: none;
  }

  .trust-row {
    flex-wrap: wrap;
    gap: 10px;
    padding: 16px 20px;
  }

  .trust-status {
    width: 100%;
    padding-left: 46px;
  }

  .terminal-body code {
    font-size: 0.78rem;
  }

  .nav-link:not(.nav-link-gh) {
    display: none;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .oss-inner {
    padding: 40px 24px;
  }
}

@media (max-width: 480px) {
  .install-pill {
    width: 100%;
    justify-content: center;
  }

  .cta-row {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    justify-content: center;
  }
}

/* === Focus visible for accessibility === */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* === Reduced motion === */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  .fade-in {
    opacity: 1;
    transform: none;
  }

  html {
    scroll-behavior: auto;
  }
}