/* ---------------------------------------------------------------
   Raj Lakhani — AI audits. Editorial-industrial, system fonts only.
   No external fonts, no frameworks. Warm paper + ink + brass.
----------------------------------------------------------------*/

:root {
  --paper:   #eaeef2;
  --paper-2: #e0e6ec;
  --ink:     #14202e;
  --body:    #33404d;
  --muted:   #667484;
  --rule:    #cdd6df;
  --accent:  #235f9e;   /* steel blue */
  --accent-soft: #dbe6f2;
  --btn-bg:  #1c5c9c;   /* bold blue CTA */
  --btn-fg:  #ffffff;
  --grid:    rgba(35,95,158,0.05);
  --card:    #f5f8fb;

  --serif: Georgia, "Iowan Old Style", "Palatino Linotype", Palatino, "Times New Roman", serif;
  --sans:  -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, system-ui, sans-serif;
  --mono:  ui-monospace, "Cascadia Code", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --wrap: 1060px;
  --measure: 680px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:   #0f1720;
    --paper-2: #16212e;
    --ink:     #e8edf2;
    --body:    #b9c4d0;
    --muted:   #7e8b98;
    --rule:    #26323f;
    --accent:  #6aa6e2;
    --accent-soft: #16212e;
    --btn-bg:  #3f86d6;
    --btn-fg:  #0b1420;
    --grid:    rgba(122,166,226,0.07);
    --card:    #14202e;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--body);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 { font-family: var(--serif); color: var(--ink); font-weight: 700; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.1rem, 6vw, 3.4rem); line-height: 1.08; margin: 0 0 22px; }
h2 { font-size: clamp(1.6rem, 4vw, 2.3rem); line-height: 1.15; margin: 0 0 18px; }
h3 { font-size: 1.18rem; line-height: 1.3; margin: 0 0 8px; }
p  { margin: 0 0 18px; }
a  { color: var(--accent); text-underline-offset: 3px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }

/* ---------- layout scaffolding ----------
   Center a content column of width --wrap using padding, so every block
   inside a section aligns to the same left edge (narrow blocks included). */
main > section {
  padding: 84px max(24px, calc((100% - var(--wrap)) / 2));
}
.band { background: var(--paper-2); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.section-lede { max-width: var(--measure); font-size: 1.15rem; color: var(--body); }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin: 0 0 20px;
}

/* ---------- header ---------- */
header.site {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
  max-width: var(--wrap); margin: 0 auto;
  padding: 20px 24px;
  border-bottom: 1px solid var(--rule);
}
.wordmark {
  font-family: var(--serif); font-weight: 700; font-size: 1.15rem;
  color: var(--ink); text-decoration: none; line-height: 1.1;
  display: flex; flex-direction: column;
}
.wordmark span {
  font-family: var(--mono); font-weight: 400; font-size: 0.66rem;
  text-transform: uppercase; letter-spacing: 0.13em; color: var(--muted);
  margin-top: 3px;
}
.site-nav { display: flex; align-items: center; gap: 22px; }
.site-nav > a:not(.btn) {
  font-family: var(--mono); font-size: 0.8rem; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--ink); text-decoration: none;
}
.site-nav > a:not(.btn):hover { color: var(--accent); }

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--sans); font-weight: 600; font-size: 1rem;
  color: var(--btn-fg); background: var(--btn-bg);
  padding: 14px 26px; border-radius: 4px;
  text-decoration: none; border: 1px solid var(--btn-bg);
  transition: transform .12s ease, opacity .12s ease;
}
.btn:hover { transform: translateY(-1px); opacity: 0.92; }
.cta-arrow::after { content: "  \2192"; font-weight: 400; }
.cta-arrow:hover::after { padding-left: 3px; }
.btn-sm { padding: 9px 16px; font-size: 0.9rem; }
.btn-lg { padding: 17px 34px; font-size: 1.05rem; }
.btn-outline { background: transparent; color: var(--ink); border: 1.5px solid var(--ink); }
.btn-outline:hover { background: var(--ink); color: var(--paper); opacity: 1; }

/* ---------- header mark (text label, no logo) ---------- */
.kicker-mark {
  font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.16em;
  font-size: 0.8rem; font-weight: 600; color: var(--accent); text-decoration: none;
}
.kicker-mark:hover { color: var(--ink); }

/* ---------- worksheet (the centerpiece) ---------- */
.worksheet {
  max-width: 600px; margin: 0 auto;
  background: var(--card); border: 1px solid var(--rule); border-radius: 8px;
  padding: 32px 36px;
}
.ws-head {
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px;
  padding-bottom: 14px; border-bottom: 2px solid var(--ink);
}
.ws-title { font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.16em; font-size: 0.82rem; font-weight: 700; color: var(--ink); }
.ws-meta { font-family: var(--mono); font-size: 0.72rem; color: var(--muted); }
.ws-lines { list-style: none; margin: 0; padding: 0; }
.ws-lines li { display: flex; align-items: center; gap: 12px; padding: 15px 0; border-bottom: 1px solid var(--rule); }
.ws-item { font-size: 1rem; color: var(--ink); white-space: nowrap; }
.ws-lead { flex: 1 1 auto; border-bottom: 1px dotted var(--muted); align-self: flex-end; margin-bottom: 7px; min-width: 14px; }
.meter { display: inline-flex; gap: 4px; flex: 0 0 auto; }
.meter i { width: 16px; height: 9px; background: var(--rule); border-radius: 1px; }
.sev1 i:nth-child(1), .sev2 i:nth-child(-n+2), .sev3 i { background: var(--accent); }
.ws-total { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding-top: 16px; border-top: 2px solid var(--ink); }
.ws-total .lbl { font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.8rem; font-weight: 700; color: var(--ink); }
.ws-blank { font-family: var(--mono); font-size: 1rem; font-weight: 600; color: var(--accent); }
.ws-note { font-family: var(--mono); font-size: 0.8rem; color: var(--muted); margin: 16px 0 0; }
.worksheet .btn-lg { display: block; text-align: center; margin-top: 22px; }

/* ---------- plain lists (how it works / what you get back) ---------- */
.plainlist { list-style: none; margin: 36px 0 0; padding: 0; max-width: var(--measure); }
.plainlist li { position: relative; padding: 20px 0 20px 26px; border-top: 1px solid var(--rule); color: var(--muted); }
.plainlist li:last-child { border-bottom: 1px solid var(--rule); }
.plainlist li::before { content: ""; position: absolute; left: 0; top: 26px; width: 9px; height: 9px; background: var(--accent); }
.plainlist b { color: var(--ink); font-weight: 600; }

/* ---------- book section ---------- */
.book .btn-lg { margin-top: 4px; }
.btn-ghost {
  background: transparent; color: var(--ink); border: 1px solid var(--ink);
}
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin: 12px 0 20px; }

/* ---------- hero ---------- */
.hero {
  padding-top: 72px;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 44px 44px;
}
.hero .lede { max-width: var(--measure); font-size: 1.28rem; line-height: 1.55; color: var(--body); }
.hero h1 { max-width: 20ch; }
.hero .btn-lg { margin: 8px 0 26px; }
.reassure {
  font-family: var(--mono); font-size: 0.82rem; color: var(--muted);
  border-left: 2px solid var(--accent); padding-left: 14px; max-width: 52ch;
}

/* ---------- zones (spec-sheet list) ---------- */
.zones { list-style: none; margin: 40px 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: var(--rule); border: 1px solid var(--rule);
}
.zones li { background: var(--paper); padding: 28px 26px; }
.zones .num {
  font-family: var(--mono); font-size: 0.9rem; font-weight: 600;
  color: var(--accent); letter-spacing: 0.05em;
}
.zones h3 { margin: 10px 0 8px; }
.zones p { margin: 0; color: var(--muted); font-size: 0.98rem; }
.zones .zone-cta { background: var(--accent-soft); }
.zones .zone-cta p { color: var(--body); }
.zones .zone-cta a { font-weight: 600; }

/* ---------- ledger (spec-sheet rows, not cards) ---------- */
.ledger { list-style: none; margin: 44px 0 0; padding: 0; }
.ledger li {
  display: flex; gap: 28px; align-items: baseline;
  padding: 26px 0; border-top: 1px solid var(--rule);
}
.ledger li:last-child { border-bottom: 1px solid var(--rule); }
.ledger .lnum {
  font-family: var(--mono); font-size: 1.05rem; font-weight: 600;
  color: var(--accent); flex: 0 0 auto; min-width: 2.5ch; letter-spacing: 0.03em;
}
.ledger .lbody { max-width: 62ch; }
.ledger .lbody h3 { margin: 0 0 6px; }
.ledger .lbody p { margin: 0; color: var(--muted); }
.ledger-foot { margin-top: 30px; font-size: 1.05rem; color: var(--body); }
.ledger-foot a { font-weight: 600; }

/* ---------- how it works (numbered list, not cards) ---------- */
.how-list { list-style: none; margin: 40px 0 0; padding: 0; max-width: var(--measure); }
.how-list li {
  display: flex; gap: 22px; align-items: baseline;
  padding: 22px 0; border-top: 1px solid var(--rule);
}
.how-list li:last-child { border-bottom: 1px solid var(--rule); }
.how-list .hn {
  font-family: var(--mono); font-size: 1.15rem; font-weight: 600;
  color: var(--accent); flex: 0 0 auto;
}
.how-list p { margin: 0; color: var(--muted); }
.how-list b { color: var(--ink); font-weight: 600; }

/* ---------- capture ---------- */
.capture { text-align: left; }
.capture > * { max-width: var(--measure); }
.capture p { font-size: 1.12rem; }
#subscribe { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0 12px; }
#subscribe input[type=email] {
  flex: 1 1 260px; min-width: 0;
  font-family: var(--sans); font-size: 1rem;
  padding: 14px 16px; border: 1px solid var(--rule); border-radius: 4px;
  background: var(--paper); color: var(--ink);
}
#subscribe input[type=email]:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.form-msg { flex-basis: 100%; margin: 4px 0 0; font-size: 0.95rem; font-family: var(--mono); }
.form-msg.ok  { color: var(--accent); }
.form-msg.err { color: #b03a2e; }
.fineprint { font-size: 0.85rem; color: var(--muted); }

/* ---------- faq ---------- */
.faq > * { max-width: var(--measure); }
.faq details {
  border-top: 1px solid var(--rule); padding: 18px 0;
}
.faq details:last-of-type { border-bottom: 1px solid var(--rule); }
.faq summary {
  font-family: var(--serif); font-size: 1.15rem; color: var(--ink);
  cursor: pointer; list-style: none; font-weight: 700;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--mono); color: var(--accent); font-weight: 400; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 14px 0 0; color: var(--body); }

/* ---------- contact ---------- */
.contact > * { max-width: var(--measure); }
.contact .btn-lg { margin-top: 8px; }
.contact-alt { margin-top: 20px; font-family: var(--mono); font-size: 0.9rem; color: var(--muted); }
.contact-alt a { color: var(--accent); }

/* ---------- footer ---------- */
.site-footer {
  max-width: var(--wrap); margin: 0 auto;
  padding: 32px 24px; border-top: 1px solid var(--rule);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px;
  font-size: 0.9rem; color: var(--muted);
}
.site-footer p { margin: 0; }
.site-footer nav { display: flex; gap: 20px; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }

/* ---------- responsive ---------- */
@media (max-width: 720px) {
  main > section { padding: 56px 22px; }
  .zones { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; gap: 32px; }
  header.site .wordmark span { display: none; }
}

/* ---------- generic article (legal + blog) ---------- */
.doc { max-width: var(--measure); margin: 0 auto; padding: 64px 24px 96px; }
.doc h1 { font-size: clamp(1.9rem, 5vw, 2.6rem); margin-bottom: 8px; }
.doc .updated { font-family: var(--mono); font-size: 0.8rem; color: var(--muted); margin-bottom: 36px; }
.doc h2 { font-size: 1.4rem; margin-top: 40px; }
.doc h3 { margin-top: 26px; }
.doc a.back { font-family: var(--mono); font-size: 0.8rem; }
.post-list { list-style: none; padding: 0; margin: 40px 0 0; }
.post-list li { border-top: 1px solid var(--rule); padding: 22px 0; }
.post-list li:last-child { border-bottom: 1px solid var(--rule); }
.post-list a { font-family: var(--serif); font-size: 1.3rem; color: var(--ink); text-decoration: none; }
.post-list a:hover { color: var(--accent); }
.post-list .date { font-family: var(--mono); font-size: 0.75rem; color: var(--muted); display: block; margin-bottom: 4px; }
.empty-note { font-family: var(--mono); font-size: 0.9rem; color: var(--muted); }