/* Venture OS: evergreen guides. Shared stylesheet for static blog pages. */

:root {
  --bg: #040609;
  --surface: #0d1321;
  --surface-2: #070b12;
  --border: #1c2840;
  --border-soft: #131b2a;
  --text: #e2eaf6;
  --text-muted: #a0b4cc;
  --text-dim: #5a7090;
  --text-faint: #3a4e66;
  --accent: #2d7aff;
  --accent-soft: rgba(45, 122, 255, 0.12);
  --mint: #00d9c8;
  --font-display: 'Syne', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.vos-topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(4, 6, 9, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-soft);
}

.vos-topbar-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.vos-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.vos-logo img { width: 28px; height: 28px; border-radius: 8px; }

.vos-logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.vos-logo-text strong { font-family: var(--font-display); font-weight: 700; font-size: 15px; }
.vos-logo-text span {
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-family: 'SF Mono', 'Roboto Mono', monospace;
}

.vos-topbar-links { margin-left: auto; display: flex; align-items: center; gap: 18px; }
.vos-topbar-links a { color: var(--text-dim); font-size: 13px; font-weight: 500; }
.vos-topbar-links a:hover { color: var(--accent); text-decoration: none; }

.vos-breadcrumb {
  max-width: 760px;
  margin: 0 auto;
  padding: 22px 20px 0;
  font-size: 12px;
  color: var(--text-faint);
  font-family: 'SF Mono', 'Roboto Mono', monospace;
}
.vos-breadcrumb a { color: var(--text-dim); }
.vos-breadcrumb a:hover { color: var(--accent); }
.vos-breadcrumb span.sep { margin: 0 6px; color: var(--border); }

main.vos-article {
  max-width: 760px;
  margin: 0 auto;
  padding: 18px 20px 60px;
}

.vos-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'SF Mono', 'Roboto Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 22px 0 14px;
}
.vos-eyebrow::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mint);
}

h1.vos-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 14px;
  color: var(--text);
}

.vos-dek {
  font-size: 17px;
  color: var(--text-muted);
  margin: 0 0 28px;
  line-height: 1.6;
}

.vos-meta-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: var(--text-faint);
  font-family: 'SF Mono', 'Roboto Mono', monospace;
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  padding: 12px 0;
  margin-bottom: 34px;
}

article.vos-body h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  color: var(--text);
  margin: 40px 0 14px;
  letter-spacing: -0.005em;
}

article.vos-body p {
  font-size: 16px;
  color: #c3d0e2;
  margin: 0 0 18px;
}

article.vos-body ul, article.vos-body ol {
  color: #c3d0e2;
  font-size: 16px;
  padding-left: 22px;
  margin: 0 0 18px;
}
article.vos-body li { margin-bottom: 8px; }

article.vos-body strong { color: var(--text); font-weight: 600; }

.vos-cta {
  margin: 46px 0 20px;
  padding: 26px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(45,122,255,0.14) 0%, rgba(0,217,200,0.08) 100%);
  border: 1px solid rgba(45,122,255,0.3);
}
.vos-cta p { margin: 0 0 14px; color: var(--text); font-size: 15px; }
.vos-cta a.vos-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg,#FD5617 0%,#D43A02 100%);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  padding: 10px 18px;
  border-radius: 10px;
  text-decoration: none;
}
.vos-cta a.vos-cta-btn:hover { opacity: 0.92; text-decoration: none; }

.vos-disclaimer {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--border-soft);
  font-size: 12.5px;
  color: var(--text-faint);
  line-height: 1.6;
}

footer.vos-footer {
  border-top: 1px solid var(--border-soft);
  background: var(--surface-2);
  margin-top: 40px;
}
.vos-footer-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 26px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-faint);
  font-family: 'SF Mono', 'Roboto Mono', monospace;
}
.vos-footer-inner a { color: var(--text-dim); }
.vos-footer-inner a:hover { color: var(--accent); }

/* Hub page specific */
.vos-hub-hero {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 20px 20px;
}
.vos-hub-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 4.5vw, 44px);
  line-height: 1.1;
  margin: 16px 0 14px;
}
.vos-hub-hero p {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 56ch;
  margin: 0;
}

.vos-guide-list {
  max-width: 760px;
  margin: 10px auto 60px;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.vos-guide-card {
  display: block;
  padding: 20px 22px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  transition: border-color 0.15s, transform 0.15s;
}
.vos-guide-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  text-decoration: none;
}
.vos-guide-card .vos-guide-index {
  font-family: 'SF Mono', 'Roboto Mono', monospace;
  font-size: 11px;
  color: var(--text-faint);
  letter-spacing: 0.12em;
}
.vos-guide-card h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--text);
  margin: 6px 0 8px;
}
.vos-guide-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.6;
}

@media (max-width: 480px) {
  .vos-topbar-links { gap: 12px; }
  .vos-topbar-links a:not(:first-child) { display: none; }
}