/* Selnor /guides — shared styles for Tier-1 SEO cornerstone content.
   Brand tokens mirror public/scorecard.html (selnor-brand guidelines). Dark theme,
   Inter, teal accent. Self-contained static pages (no Vite/SPA dependency). */

:root {
  --bg: #0c1018;
  --card: #111a28;
  --card-2: #0f1216;
  --border: #1e2a3a;
  --teal: #2dd4bf;
  --teal-hover: #14b8a6;
  --teal-soft: rgba(45, 212, 191, 0.10);
  --teal-soft-border: rgba(45, 212, 191, 0.30);
  --rose: #fb7185;
  --rose-soft: rgba(251, 113, 133, 0.15);
  --rose-soft-border: rgba(251, 113, 133, 0.30);
  --text-bright: #e2e8f0;
  --text-body: #c8d1dc;
  --text-muted: #64748b;
  --text-tertiary: #475569;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text-body);
  font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

main {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 8px 0 80px;
}

/* ---- header / wordmark (mirrors scorecard.html) ---- */
.shell-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0 18px;
  border-bottom: 1px solid var(--border);
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}
.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  color: var(--text-bright);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.brand-link:hover { color: var(--text-bright); }
.brand-link u {
  text-decoration-color: var(--teal);
  text-underline-offset: 4px;
  text-decoration-thickness: 2px;
}
.wordmark-mark { position: relative; width: 18px; height: 18px; }
.wordmark-mark span {
  position: absolute; width: 4px; height: 4px; border-radius: 50%; background: var(--teal);
}
.wordmark-mark .p { width: 6px; height: 6px; left: 8px; top: 0; background: var(--rose); }
.wordmark-mark .a { left: 4px; top: 8px; opacity: 0.72; }
.wordmark-mark .b { left: 12px; top: 8px; opacity: 0.72; }
.wordmark-mark .c { left: 0; top: 14px; opacity: 0.35; }
.wordmark-mark .d { left: 8px; top: 14px; opacity: 0.5; }
.wordmark-mark .e { left: 16px; top: 14px; opacity: 0.35; }
.header-cta {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--teal-soft-border);
  border-radius: 8px;
  background: var(--teal-soft);
  color: var(--teal);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}
.header-cta:hover { color: var(--teal); background: rgba(45, 212, 191, 0.16); }

/* ---- breadcrumb ---- */
.breadcrumb {
  font-size: 13px;
  color: var(--text-muted);
  padding: 22px 0 0;
  letter-spacing: 0.01em;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--teal); }
.breadcrumb span { color: var(--text-tertiary); padding: 0 6px; }

/* ---- article typography ---- */
article { padding-top: 8px; }
.eyebrow {
  color: var(--teal);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  margin: 18px 0 10px;
}
h1 {
  color: var(--text-bright);
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 800;
  margin: 0 0 14px;
}
.standfirst {
  font-size: 20px;
  line-height: 1.55;
  color: var(--text-body);
  margin: 0 0 26px;
}
article h2 {
  color: var(--text-bright);
  font-size: 25px;
  line-height: 1.25;
  letter-spacing: -0.01em;
  font-weight: 700;
  margin: 44px 0 14px;
  padding-top: 8px;
}
article h3 {
  color: var(--text-bright);
  font-size: 19px;
  font-weight: 700;
  margin: 28px 0 10px;
}
article p { margin: 0 0 18px; }
article ul, article ol { margin: 0 0 20px; padding-left: 22px; }
article li { margin: 0 0 9px; }
article li::marker { color: var(--teal); }
article strong { color: var(--text-bright); font-weight: 650; }
article a { text-decoration: underline; text-decoration-color: var(--teal-soft-border); text-underline-offset: 3px; }

blockquote {
  margin: 24px 0;
  padding: 16px 20px;
  border-left: 3px solid var(--teal);
  background: var(--teal-soft);
  border-radius: 0 8px 8px 0;
  color: var(--text-bright);
  font-size: 18px;
}
blockquote p:last-child { margin-bottom: 0; }

/* callout / key-point card */
.callout {
  margin: 24px 0;
  padding: 18px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.callout .callout-label {
  color: var(--teal);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  margin: 0 0 8px;
}
.callout p:last-child { margin-bottom: 0; }

/* question list (reverse-interview / ask-next style) */
.q-list { list-style: none; padding: 0; margin: 0 0 22px; }
.q-list li {
  padding: 14px 16px;
  margin: 0 0 10px;
  background: var(--card-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-bright);
}
.q-list li .why { display: block; margin-top: 6px; color: var(--text-muted); font-size: 15px; }

/* ---- primary scorecard CTA card ---- */
.cta-card {
  margin: 40px 0 8px;
  padding: 28px 26px;
  background: linear-gradient(180deg, var(--card) 0%, var(--card-2) 100%);
  border: 1px solid var(--teal-soft-border);
  border-radius: 14px;
  text-align: center;
}
.cta-card h2 { margin: 0 0 8px; padding: 0; font-size: 23px; color: var(--text-bright); }
.cta-card p { margin: 0 auto 18px; max-width: 52ch; color: var(--text-body); }
.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 26px;
  border-radius: 10px;
  background: var(--teal);
  color: #06231f;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.cta-button:hover { background: var(--teal-hover); color: #06231f; }
.cta-sub { display: block; margin-top: 12px; font-size: 13px; color: var(--text-muted); }

/* ---- related guides ---- */
.related { margin: 48px 0 0; border-top: 1px solid var(--border); padding-top: 26px; }
.related h2 { font-size: 15px; text-transform: uppercase; letter-spacing: 1.2px; color: var(--text-muted); margin: 0 0 16px; padding: 0; }
.related-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.related-grid a {
  display: block;
  padding: 16px 18px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-bright);
  font-weight: 600;
  text-decoration: none;
  line-height: 1.4;
}
.related-grid a:hover { border-color: var(--teal-soft-border); color: var(--text-bright); }
.related-grid a span { display: block; margin-top: 5px; font-size: 13px; font-weight: 400; color: var(--text-muted); }

/* ---- hub (index) ---- */
.hub-hero { padding: 30px 0 8px; }
.hub-hero h1 { font-size: clamp(30px, 5vw, 44px); }
.hub-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 26px 0 0; }
.hub-card {
  display: block;
  padding: 22px 22px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
}
.hub-card:hover { border-color: var(--teal-soft-border); }
.hub-card .kicker { color: var(--teal); font-size: 11px; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase; }
.hub-card h2 { color: var(--text-bright); font-size: 20px; margin: 8px 0 8px; padding: 0; line-height: 1.3; }
.hub-card p { color: var(--text-muted); font-size: 15px; margin: 0; }

/* ---- footer ---- */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 56px;
  padding: 26px 0 0;
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.7;
}
.site-footer a { color: var(--text-muted); }
.site-footer a:hover { color: var(--teal); }
.site-footer .footer-links { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 10px; }
.site-footer .footer-fine { color: var(--text-tertiary); max-width: 64ch; }

@media (max-width: 640px) {
  body { font-size: 16px; }
  .related-grid, .hub-grid { grid-template-columns: 1fr; }
  article h2 { font-size: 22px; }
}