/* ============================================================
   VirtualBytes Help Pages — shared styles
   Same design tokens as the main site for visual consistency.
   ============================================================ */

/* Self-hosted fonts (match main site) */
@font-face{font-family:'DM Sans';font-weight:400;font-display:swap;src:url('/fonts/dm-sans-v17-latin-regular.woff2') format('woff2')}
@font-face{font-family:'DM Sans';font-weight:500;font-display:swap;src:url('/fonts/dm-sans-v17-latin-500.woff2') format('woff2')}
@font-face{font-family:'DM Sans';font-weight:700;font-display:swap;src:url('/fonts/dm-sans-v17-latin-700.woff2') format('woff2')}
@font-face{font-family:'DM Mono';font-weight:400;font-display:swap;src:url('/fonts/dm-mono-v16-latin-regular.woff2') format('woff2')}
@font-face{font-family:'DM Mono';font-weight:500;font-display:swap;src:url('/fonts/dm-mono-v16-latin-500.woff2') format('woff2')}
@font-face{font-family:'Outfit';font-weight:600;font-display:swap;src:url('/fonts/outfit-v15-latin-600.woff2') format('woff2')}
@font-face{font-family:'Outfit';font-weight:700;font-display:swap;src:url('/fonts/outfit-v15-latin-700.woff2') format('woff2')}
@font-face{font-family:'Outfit';font-weight:800;font-display:swap;src:url('/fonts/outfit-v15-latin-800.woff2') format('woff2')}

:root {
  --fd: 'Outfit', 'DM Sans', system-ui, sans-serif;
  --ff: 'DM Sans', system-ui, sans-serif;
  --fm: 'DM Mono', ui-monospace, monospace;
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #1c2128;
  --br: #30363d;
  --br2: #21262d;
  --t1: #e2e8f0;
  --t2: #8b949e;
  --t3: #484f58;
  --ac: #58a6ff;
  --ac2: #3b82f6;
  --ac-b: #1d4ed8;
  --ok: #3fb950;
  --warn: #f0883e;
  --err: #f85149;
  --info: #22d3ee;
  --teal: #39d0e0;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: var(--ff);
  background: var(--bg);
  color: var(--t1);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* ── Top navigation ── */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--br);
  padding: 14px 24px;
}
.nav-inner {
  max-width: 960px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.nav-grid {
  width: 28px; height: 28px; border-radius: 6px;
  background: linear-gradient(135deg, #0d2061, #1d4ed8);
  display: grid; grid-template-columns: 1fr 1fr; gap: 2px; padding: 4px;
}
.nav-grid span { background: #fff; border-radius: 2px; opacity: 0.9; }
.nav-grid span:nth-child(2), .nav-grid span:nth-child(3) { opacity: 0.55; }
.nav-grid span:nth-child(4) { opacity: 0.25; }
.nav-brand {
  font-family: var(--fd); font-size: 14px; font-weight: 800; color: #fff;
  letter-spacing: -0.01em;
}
.nav-brand-sub {
  font-family: var(--fm); font-size: 9px; color: var(--t2);
  letter-spacing: 0.1em; text-transform: uppercase; margin-top: 1px;
}
.nav-links { display: flex; gap: 6px; align-items: center; }
.nav-link {
  font-family: var(--fm); font-size: 12px; color: var(--t2);
  text-decoration: none; padding: 7px 12px; border-radius: 6px;
  transition: all 0.15s;
}
.nav-link:hover { color: var(--t1); background: var(--bg2); }
.nav-link.cta {
  background: var(--ac2); color: #fff;
  font-weight: 600; padding: 7px 14px;
}
.nav-link.cta:hover { background: var(--ac); }

/* ── Breadcrumb ── */
.crumbs {
  max-width: 960px; margin: 20px auto 0; padding: 0 24px;
  font-family: var(--fm); font-size: 11px; color: var(--t3);
  letter-spacing: 0.04em;
}
.crumbs a { color: var(--t2); text-decoration: none; }
.crumbs a:hover { color: var(--ac); }
.crumbs .sep { margin: 0 8px; color: var(--t3); }

/* ── Main container ── */
.wrap { max-width: 960px; margin: 0 auto; padding: 32px 24px 80px; }

/* ── Hero ── */
.eyebrow {
  font-family: var(--fm); font-size: 10px; color: var(--ac);
  letter-spacing: 0.16em; text-transform: uppercase; margin-bottom: 10px;
}
h1 {
  font-family: var(--fd); font-size: clamp(28px, 4vw, 42px);
  font-weight: 800; letter-spacing: -0.03em; line-height: 1.1;
  margin-bottom: 14px;
}
h1 span { color: var(--teal); }
.lede {
  font-size: 17px; color: var(--t2); max-width: 720px;
  line-height: 1.6; margin-bottom: 20px;
}
.hero-tags {
  display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 28px;
}
.hero-tag {
  font-family: var(--fm); font-size: 10px; padding: 3px 9px;
  border-radius: 20px; border: 1px solid var(--br);
  color: var(--t2); background: var(--bg2);
}
.hero-actions {
  display: flex; gap: 10px; flex-wrap: wrap; margin-top: 10px;
}
.btn {
  font-family: var(--fd); font-size: 13px; font-weight: 600;
  padding: 10px 18px; border-radius: 8px;
  text-decoration: none; display: inline-flex; align-items: center; gap: 8px;
  transition: all 0.15s;
}
.btn-primary {
  background: var(--ac2); color: #fff;
  border: 1px solid var(--ac2);
}
.btn-primary:hover { background: var(--ac); border-color: var(--ac); }
.btn-secondary {
  background: var(--bg2); color: var(--t1);
  border: 1px solid var(--br);
}
.btn-secondary:hover { border-color: var(--ac); color: var(--ac); }
.btn svg { width: 14px; height: 14px; }

/* ── Section headings ── */
h2 {
  font-family: var(--fd); font-size: 22px; font-weight: 700;
  margin: 48px 0 16px; letter-spacing: -0.02em;
  display: flex; align-items: center; gap: 10px;
  color: var(--t1);
}
h2::before {
  content: ''; width: 4px; height: 20px;
  background: var(--ac); border-radius: 2px;
}
h3 {
  font-family: var(--fd); font-size: 17px; font-weight: 700;
  margin: 28px 0 10px; color: var(--t1);
}
h4 {
  font-family: var(--fd); font-size: 14px; font-weight: 700;
  margin: 20px 0 8px; color: var(--t2);
  letter-spacing: 0.02em;
}

/* ── Body text ── */
p { margin-bottom: 14px; color: var(--t1); }
p.dim, .dim { color: var(--t2); }
a { color: var(--ac); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { margin: 10px 0 18px 24px; }
li { margin-bottom: 6px; }
strong { color: var(--t1); font-weight: 600; }
code {
  font-family: var(--fm); font-size: 0.88em;
  background: var(--bg2); border: 1px solid var(--br2);
  padding: 1px 6px; border-radius: 4px; color: var(--teal);
}
pre {
  font-family: var(--fm); font-size: 12.5px; line-height: 1.55;
  background: var(--bg); border: 1px solid var(--br);
  padding: 14px 18px; border-radius: 8px;
  overflow-x: auto; margin: 12px 0 18px;
  color: var(--t1);
}
pre code { background: none; border: none; padding: 0; color: inherit; }

/* ── Quick-start card ── */
.quickstart {
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.06), rgba(59, 130, 246, 0.06));
  border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: 12px; padding: 22px 26px; margin: 24px 0 36px;
}
.quickstart h3 {
  margin-top: 0; font-family: var(--fd); font-size: 15px;
  color: var(--info); letter-spacing: 0.04em; text-transform: uppercase;
  display: flex; align-items: center; gap: 8px;
}
.quickstart h3::before { content: '🚀'; font-size: 16px; }
.quickstart ol {
  margin-left: 22px; margin-top: 10px;
  counter-reset: qs-step;
}
.quickstart li {
  margin-bottom: 10px; padding-left: 4px;
}

/* ── TOC ── */
.toc {
  background: var(--bg2); border: 1px solid var(--br);
  border-radius: 8px; padding: 16px 20px; margin: 24px 0 36px;
  font-size: 13px;
}
.toc-title {
  font-family: var(--fm); font-size: 10px; color: var(--t3);
  letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 10px;
}
.toc ul { margin: 0; list-style: none; padding: 0; }
.toc li {
  margin-bottom: 4px; padding-left: 12px;
  border-left: 2px solid var(--br2);
}
.toc a { color: var(--t2); }
.toc a:hover { color: var(--ac); border-left-color: var(--ac); }

/* ── Tables (for field reference) ── */
table.ref {
  width: 100%; border-collapse: collapse;
  margin: 14px 0 20px; font-size: 13px;
}
.ref th {
  text-align: left; font-family: var(--fm); font-size: 10px;
  color: var(--t3); text-transform: uppercase; letter-spacing: 0.06em;
  padding: 10px 12px; border-bottom: 2px solid var(--br);
  font-weight: 500;
}
.ref td {
  padding: 10px 12px; border-bottom: 1px solid var(--br2);
  vertical-align: top;
}
.ref td:first-child {
  font-family: var(--fm); color: var(--teal);
  white-space: nowrap; padding-right: 18px;
}
.ref td.t-req {
  color: var(--warn); font-weight: 500;
}
.ref tr:last-child td { border-bottom: 0; }

/* ── Callout boxes ── */
.callout {
  border-radius: 8px; padding: 14px 18px; margin: 16px 0;
  display: flex; gap: 14px; font-size: 13px;
}
.callout-icon {
  font-size: 18px; line-height: 1; margin-top: 2px;
}
.callout-body { flex: 1; }
.callout-body strong { display: block; margin-bottom: 4px; }
.callout.tip {
  background: rgba(63, 185, 80, 0.06);
  border: 1px solid rgba(63, 185, 80, 0.3);
}
.callout.tip strong { color: var(--ok); }
.callout.warn {
  background: rgba(240, 136, 62, 0.06);
  border: 1px solid rgba(240, 136, 62, 0.3);
}
.callout.warn strong { color: var(--warn); }
.callout.info {
  background: rgba(88, 166, 255, 0.06);
  border: 1px solid rgba(88, 166, 255, 0.3);
}
.callout.info strong { color: var(--ac); }
.callout.danger {
  background: rgba(248, 81, 73, 0.06);
  border: 1px solid rgba(248, 81, 73, 0.3);
}
.callout.danger strong { color: var(--err); }

/* ── Examples ── */
.example {
  background: var(--bg2); border: 1px solid var(--br);
  border-radius: 8px; margin: 16px 0;
  overflow: hidden;
}
.example-head {
  padding: 10px 16px; background: var(--bg3);
  border-bottom: 1px solid var(--br);
  font-family: var(--fm); font-size: 11px; color: var(--t2);
  letter-spacing: 0.04em; text-transform: uppercase;
  display: flex; align-items: center; gap: 8px;
}
.example-head::before {
  content: '▸'; color: var(--teal);
}
.example-body { padding: 16px 18px; font-size: 14px; }
.example-body p:last-child { margin-bottom: 0; }

/* ── Related tools ── */
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px; margin: 16px 0;
}
.related-card {
  background: var(--bg2); border: 1px solid var(--br);
  border-radius: 10px; padding: 16px; text-decoration: none;
  transition: all 0.15s;
  display: block;
}
.related-card:hover {
  border-color: var(--ac); transform: translateY(-1px);
  text-decoration: none;
}
.related-card-title {
  font-family: var(--fd); font-weight: 700; font-size: 14px;
  color: var(--t1); margin-bottom: 4px;
}
.related-card-desc {
  font-size: 12px; color: var(--t2); line-height: 1.5;
}

/* ── FAQ ── */
.faq-item {
  border-bottom: 1px solid var(--br);
  padding: 18px 0;
}
.faq-item:last-child { border-bottom: 0; }
.faq-q {
  font-family: var(--fd); font-weight: 600; font-size: 15px;
  color: var(--t1); margin-bottom: 8px;
  cursor: pointer; user-select: none;
  display: flex; gap: 10px; align-items: flex-start;
}
.faq-q::before {
  content: '+'; color: var(--ac); font-size: 18px;
  font-weight: 400; line-height: 1; margin-top: 1px;
  transition: transform 0.2s;
}
.faq-item.open .faq-q::before { transform: rotate(45deg); }
.faq-a {
  padding-left: 24px; color: var(--t2); font-size: 14px;
  display: none;
}
.faq-item.open .faq-a { display: block; }

/* ── Footer ── */
.footer {
  margin-top: 80px; padding: 24px;
  border-top: 1px solid var(--br);
  text-align: center;
  font-family: var(--fm); font-size: 11px; color: var(--t3);
}
.footer a { color: var(--t2); }

/* ── Help index page — card grid ── */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px; margin: 20px 0;
}
.guide-card {
  background: var(--bg2); border: 1px solid var(--br);
  border-radius: 10px; padding: 20px 22px;
  text-decoration: none; display: flex; flex-direction: column;
  gap: 8px; transition: all 0.15s;
  border-top: 3px solid var(--ac);
}
.guide-card:hover {
  border-color: var(--ac); transform: translateY(-2px);
  text-decoration: none;
}
.guide-card-title {
  font-family: var(--fd); font-weight: 700; font-size: 16px;
  color: var(--t1); margin-bottom: 2px;
}
.guide-card-desc {
  font-size: 13px; color: var(--t2); line-height: 1.5;
  margin-bottom: auto;
}
.guide-card-meta {
  font-family: var(--fm); font-size: 10px;
  color: var(--t3); letter-spacing: 0.04em;
  margin-top: 10px; padding-top: 10px;
  border-top: 1px solid var(--br2);
}
.guide-card.draft { opacity: 0.55; cursor: default; }
.guide-card.draft:hover { transform: none; border-color: var(--br); }
.guide-card.draft .guide-card-meta { color: var(--warn); }

/* ── Responsive ── */
@media (max-width: 720px) {
  .wrap { padding: 20px 16px 60px; }
  .nav { padding: 12px 16px; }
  .nav-brand-sub { display: none; }
  h2 { font-size: 19px; margin-top: 36px; }
  .quickstart { padding: 16px 18px; }
  .callout { flex-direction: column; gap: 4px; }
}