/* ===========================================================================
   doc.css — shared styles for static content pages (privacy, terms, about,
   contact, methodology, faq, guides). Loaded AFTER styles.css, so it inherits
   the :root vars, atmosphere, .topbar and .brand from the main stylesheet and
   only adds prose + page-chrome on top. Kept generic so the future
   "WHAT IF I …" series can reuse it unchanged.
   ========================================================================== */

/* brand becomes a link on doc pages */
a.brand { text-decoration: none; color: inherit; }

/* ---------- header nav ---------- */
.doc-nav {
  display: flex; align-items: center; gap: clamp(14px, 2.5vw, 28px);
  font-family: "IBM Plex Mono", monospace; font-size: 12px; letter-spacing: 1px;
}
.doc-nav a {
  color: var(--ink-dim); text-decoration: none; text-transform: uppercase;
  transition: color .2s;
}
.doc-nav a:hover { color: var(--accent); }

/* ---------- doc shell ---------- */
.doc {
  position: relative; z-index: 2;
  max-width: 760px; margin: 0 auto;
  padding: clamp(36px, 6vw, 72px) clamp(20px, 5vw, 40px) 30px;
}
.doc-kicker {
  font-family: "IBM Plex Mono", monospace; font-size: 12px; letter-spacing: 4px;
  color: var(--ink-dim); text-transform: uppercase; margin-bottom: 16px;
}
.doc h1 {
  font-weight: 700; letter-spacing: -1px; line-height: 1.02;
  font-size: clamp(34px, 6vw, 56px); text-transform: uppercase; margin-bottom: 14px;
}
.doc h1 .accent { color: var(--accent); }
.doc .updated {
  font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--ink-faint);
  letter-spacing: 1px; margin-bottom: 30px;
}
.doc .lead {
  font-size: clamp(16px, 2vw, 19px); color: var(--ink-dim); line-height: 1.6;
  margin-bottom: 34px;
}
.doc h2 {
  font-weight: 700; font-size: clamp(20px, 3vw, 26px); letter-spacing: -.3px;
  margin: 40px 0 14px; padding-top: 18px; border-top: 1px solid var(--line-soft);
}
.doc h3 {
  font-weight: 600; font-size: clamp(16px, 2.2vw, 19px);
  margin: 26px 0 10px; color: var(--ink);
}
.doc p, .doc li {
  color: #c7c7cd; line-height: 1.72; font-size: 16px; margin-bottom: 14px;
}
.doc ul, .doc ol { margin: 0 0 16px 1.1em; }
.doc li { margin-bottom: 8px; }
.doc a { color: var(--accent); text-decoration: none; border-bottom: 1px solid rgba(200,255,0,.3); }
.doc a:hover { border-bottom-color: var(--accent); }
.doc strong { color: var(--ink); font-weight: 600; }
.doc code {
  font-family: "IBM Plex Mono", monospace; font-size: 13px;
  background: var(--panel-2); border: 1px solid var(--line-soft);
  padding: 1px 6px; border-radius: 4px; color: var(--accent);
}

/* callout box */
.doc .note {
  background: var(--panel); border: 1px solid var(--line-hard); border-left: 3px solid var(--accent);
  border-radius: var(--r); padding: 16px 18px; margin: 22px 0; font-size: 15px; color: var(--ink-dim);
}
.doc .note strong { color: var(--accent); }

/* table (methodology) */
.doc table {
  width: 100%; border-collapse: collapse; margin: 18px 0 24px;
  font-size: 14px; font-family: "IBM Plex Mono", monospace;
}
.doc th, .doc td {
  text-align: left; padding: 11px 12px; border-bottom: 1px solid var(--line-soft);
}
.doc th { color: var(--ink-dim); font-weight: 600; letter-spacing: .5px; text-transform: uppercase; font-size: 12px; }
.doc td { color: #c7c7cd; }

/* ---------- guides cards ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; margin-top: 26px; }
.card {
  display: block; text-decoration: none; border: 1px solid var(--line-soft); border-radius: var(--r);
  background: var(--panel); padding: 22px; transition: border-color .2s, transform .2s;
}
.card:hover { border-color: var(--line-hard); transform: translateY(-2px); }
.card .tag {
  font-family: "IBM Plex Mono", monospace; font-size: 11px; letter-spacing: 2px;
  color: var(--accent); text-transform: uppercase;
}
.card h3 { color: var(--ink); font-size: 19px; margin: 10px 0 8px; line-height: 1.25; }
.card p { color: var(--ink-dim); font-size: 14px; line-height: 1.55; margin: 0; }

/* read-more / back link */
.doc .back {
  display: inline-block; margin-top: 8px;
  font-family: "IBM Plex Mono", monospace; font-size: 12px; letter-spacing: 1px;
  color: var(--ink-dim); text-transform: uppercase; border: 0;
}
.doc .back:hover { color: var(--accent); }

/* CTA back to calculator */
.doc-cta {
  margin: 40px 0 0; padding: 24px; border: 1px solid var(--line-hard); border-radius: var(--r);
  background: var(--panel); text-align: center;
}
.doc-cta p { color: var(--ink-dim); margin-bottom: 14px; }
.doc-cta a.run-link {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent); color: #000; font-weight: 700; letter-spacing: .5px;
  padding: 12px 22px; border-radius: var(--r); text-decoration: none; border: 0;
  font-family: "Space Grotesk", sans-serif;
}
.doc-cta a.run-link:hover { filter: brightness(1.08); }

/* ---------- site footer (shared) ---------- */
.site-foot {
  position: relative; z-index: 2;
  max-width: 1180px; margin: 60px auto 0; padding: 40px clamp(20px, 5vw, 64px) 30px;
  border-top: 1px solid var(--line-soft);
}
.sf-cols {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 28px;
}
.sf-brand { font-weight: 700; letter-spacing: 1px; font-size: 16px; }
.sf-brand em { font-style: normal; color: var(--ink-dim); }
.sf-cols > div > p { color: var(--ink-faint); font-size: 13px; line-height: 1.6; margin-top: 10px; max-width: 260px; }
.sf-cols nav { display: flex; flex-direction: column; gap: 9px; }
.sf-cols h4 {
  font-family: "IBM Plex Mono", monospace; font-size: 11px; letter-spacing: 2px;
  color: var(--ink-dim); text-transform: uppercase; margin-bottom: 4px; font-weight: 600;
}
.sf-cols nav a { color: var(--ink-faint); text-decoration: none; font-size: 14px; transition: color .2s; }
.sf-cols nav a:hover { color: var(--ink); }
.sf-base {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--line-soft);
  font-family: "IBM Plex Mono", monospace; font-size: 11px; color: var(--ink-faint); letter-spacing: 1px;
}

@media (max-width: 720px) {
  .sf-cols { grid-template-columns: 1fr 1fr; }
  .sf-cols > div:first-child { grid-column: 1 / -1; }
  .doc-nav { gap: 14px; }
}