/* ============================================================
   Agent Constitution — Marketing Site
   Dark theme, trust-purple accent (#6C63FF)
   ============================================================ */

:root {
  --bg: #0a0a0f;
  --bg-card: #12121a;
  --bg-card-hover: #1a1a25;
  --text: #e8e8ed;
  --text-muted: #8888a0;
  --accent: #6C63FF;
  --accent-glow: rgba(108, 99, 255, 0.15);
  --accent-soft: rgba(108, 99, 255, 0.08);
  --border: rgba(255, 255, 255, 0.06);
  --code-bg: #161622;
  --radius: 12px;
  --max-w: 1100px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.8; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ── Nav ─────────────────────────────────────────────────── */

nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

nav .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}

.nav-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 18px; color: var(--text);
}

.nav-brand img { width: 32px; height: 32px; border-radius: 8px; }

.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a { color: var(--text-muted); font-size: 14px; font-weight: 500; }
.nav-links a:hover { color: var(--text); opacity: 1; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  z-index: 101;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-cta {
  background: var(--accent); color: #fff !important;
  padding: 8px 20px; border-radius: 8px; font-size: 14px; font-weight: 600;
}
.nav-cta:hover { opacity: 0.9 !important; }

/* ── Hero ────────────────────────────────────────────────── */

.hero {
  padding: 160px 0 100px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute; top: -200px; left: 50%; transform: translateX(-50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 24px;
  position: relative;
}

.hero h1 span { color: var(--accent); }

.hero p {
  font-size: 20px;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.5;
}

.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: 10px;
  font-size: 16px; font-weight: 600;
  transition: all 0.2s;
  border: none; cursor: pointer;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }

.btn-secondary {
  background: transparent; color: var(--text);
  border: 1px solid rgba(255,255,255,0.15);
}
.btn-secondary:hover { border-color: rgba(255,255,255,0.3); background: rgba(255,255,255,0.03); }

/* ── Sections ────────────────────────────────────────────── */

section { padding: 100px 0; }

.section-label {
  font-size: 13px; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 18px; color: var(--text-muted);
  max-width: 600px; margin-bottom: 60px;
}

.section-center { text-align: center; }
.section-center .section-desc { margin-left: auto; margin-right: auto; }

/* ── How It Works ────────────────────────────────────────── */

.flow {
  display: flex; align-items: flex-start; gap: 0;
  justify-content: center; flex-wrap: wrap;
  margin-top: 60px;
}

.flow-step {
  flex: 0 0 220px; text-align: center;
  padding: 0 16px;
}

.flow-icon {
  width: 64px; height: 64px; border-radius: 16px;
  background: var(--accent-soft);
  border: 1px solid rgba(108, 99, 255, 0.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; margin: 0 auto 16px;
}

.flow-step h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.flow-step p { font-size: 14px; color: var(--text-muted); line-height: 1.5; }

.flow-arrow {
  flex: 0 0 40px; display: flex; align-items: center;
  justify-content: center; padding-top: 20px;
  color: var(--text-muted); font-size: 20px;
}

/* ── Features Grid ───────────────────────────────────────── */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 0.2s;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(108, 99, 255, 0.15);
}

.feature-icon { font-size: 28px; margin-bottom: 16px; }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* ── Code Block ──────────────────────────────────────────── */

.code-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.code-block {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  overflow-x: auto;
}

.code-block pre {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-muted);
}

.code-block .comment { color: #555570; }
.code-block .string { color: #a8db8a; }
.code-block .key { color: #e6a157; }
.code-block .cmd { color: var(--accent); }

/* ── Architecture ────────────────────────────────────────── */

.arch-diagram {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px;
  text-align: center;
  margin-top: 40px;
}

.arch-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.arch-node {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px 32px;
  min-width: 160px;
}

.arch-node.relay {
  border-color: rgba(108, 99, 255, 0.3);
  background: var(--accent-soft);
}

.arch-node h4 { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.arch-node p { font-size: 12px; color: var(--text-muted); }

.arch-arrow { color: var(--accent); font-size: 24px; font-weight: 700; }

/* ── Rule Categories ─────────────────────────────────────── */

.rules-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 2.5rem;
}

.rule-category {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 28px 24px;
  text-align: left;
  transition: all 0.2s ease;
}

.rule-category:hover {
  border-color: rgba(108, 99, 255, 0.25);
  background: rgba(255, 255, 255, 0.05);
}

.rule-category-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.rule-category h4 {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.rule-category ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rule-category li {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
  padding-left: 12px;
  position: relative;
}

.rule-category li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: bold;
}

/* ── Audit Trail ─────────────────────────────────────────── */

.audit-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 40px;
}

.audit-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex; gap: 16px; align-items: flex-start;
}

.audit-item .icon { font-size: 24px; flex-shrink: 0; }
.audit-item h4 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.audit-item p { font-size: 13px; color: var(--text-muted); }

/* ── Pairing Section ─────────────────────────────────────── */

.pairing-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.pairing-step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  position: relative;
}

.pairing-step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
}

.pairing-step h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
}

.pairing-step p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.clawdhub-note {
  margin-top: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.clawdhub-note code {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 14px;
  color: var(--accent);
}

.clawdhub-note p {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0;
}

/* ── CTA ─────────────────────────────────────────────────── */

.cta-section {
  text-align: center;
  padding: 120px 0;
}

.cta-section h2 {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 18px; color: var(--text-muted);
  margin-bottom: 40px;
}

/* ── Footer ──────────────────────────────────────────────── */

footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
}

footer .container {
  display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: 16px;
}

.footer-links { display: flex; gap: 24px; }
.footer-links a { color: var(--text-muted); font-size: 14px; }
.footer-links a:hover { color: var(--text); }

.footer-copy { color: var(--text-muted); font-size: 14px; }

/* ── Legal Pages ─────────────────────────────────────────── */

.legal {
  padding: 120px 0 80px;
  max-width: 720px;
  margin: 0 auto;
}

.legal h1 {
  font-size: 36px; font-weight: 800;
  margin-bottom: 8px;
}

.legal .updated {
  color: var(--text-muted); font-size: 14px;
  margin-bottom: 48px;
}

.legal h2 {
  font-size: 22px; font-weight: 700;
  margin: 40px 0 12px;
}

.legal p, .legal li {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 12px;
}

.legal ul { padding-left: 24px; margin-bottom: 16px; }

.legal strong { color: var(--text); }

/* ── Security Page ────────────────────────────────────────── */

.security-hero {
  margin: 32px 0 48px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
}

.security-hero-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.security-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.security-stat-value {
  font-size: 36px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.security-stat-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.security-flow {
  margin: 24px 0 40px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.security-flow-step {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: all 0.2s;
}

.security-flow-step:hover {
  background: var(--bg-card-hover);
  border-color: rgba(108, 99, 255, 0.15);
}

.security-flow-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-soft);
  border: 1px solid rgba(108, 99, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.security-flow-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.security-flow-text strong {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.security-flow-text span {
  font-size: 13px;
  color: var(--text-muted);
}

.security-flow-arrow {
  text-align: center;
  color: var(--accent);
  font-size: 18px;
  padding: 4px 0;
  opacity: 0.6;
}

/* ── Responsive ──────────────────────────────────────────── */

/* Ensure nav-links.open doesn't affect desktop layout */
@media (min-width: 769px) {
  .nav-links.open {
    display: flex !important;
    position: static !important;
    height: auto !important;
    min-height: auto !important;
    background: transparent !important;
    flex-direction: row !important;
    padding-top: 0 !important;
    z-index: auto !important;
  }
  .nav-links.open a {
    font-size: 14px !important;
    padding: 0 !important;
    width: auto !important;
    text-align: left !important;
    border-bottom: none !important;
    color: var(--text-muted) !important;
  }
}

@media (max-width: 768px) {
  .code-section { grid-template-columns: 1fr; }
  .flow-arrow { display: none; }
  .flow { gap: 32px; }
  .arch-flow { flex-direction: column; }
  .arch-arrow { transform: rotate(90deg); }
  .nav-links {
    display: none !important;
    position: fixed !important;
    top: 64px !important;
    left: 0 !important;
    right: 0 !important;
    height: calc(100vh - 64px) !important;
    min-height: calc(100vh - 64px) !important;
    background: #0a0a0f !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: flex-start !important;
    padding-top: 40px !important;
    gap: 0 !important;
    z-index: 999 !important;
    overflow-y: auto;
  }
  .nav-links.open { display: flex !important; }
  .nav-links a {
    font-size: 18px !important;
    padding: 16px 0 !important;
    width: 100% !important;
    text-align: center !important;
    border-bottom: 1px solid var(--border) !important;
    color: var(--text) !important;
  }
  .nav-links .nav-cta {
    margin-top: 16px;
    width: auto !important;
    border-bottom: none !important;
  }
  .hamburger { display: flex; }
  .security-hero-inner { grid-template-columns: repeat(2, 1fr); }
  .pairing-steps { grid-template-columns: 1fr 1fr; }
  .rules-categories { grid-template-columns: repeat(2, 1fr); }
  .clawdhub-note { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .hero { padding: 120px 0 60px; }
  section { padding: 60px 0; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .rules-categories { grid-template-columns: 1fr; }
}
