/* ReqProof structural mockup — wireframe-grade, copy-first.
   No brand design here on purpose: grayscale, adjustable type, visible structure.
   Typography variables are driven by mock.js (control panel, persisted). */

:root {
  --base: 18.5px;          /* body font size */
  --scale: 1.3;         /* modular scale ratio */
  --measure: 90ch;       /* max line length for prose */
  --leading: 1.5;       /* body line-height */
  --hweight: 500;        /* heading weight */

  --font-serif: "Charter", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;

  --font-body: var(--font-serif);
  --font-head: var(--font-sans);

  --ink: #1a1a1a;
  --ink-soft: #4a4a4a;
  --ink-faint: #8a8a8a;
  --paper: #fbfaf7;
  --paper-dim: #f1efe9;
  --line: #d8d5cc;
  --accent: #a03123;      /* auditor's red, used sparingly even in wireframe */
  --note-bg: #fff8dc;
  --note-ink: #6b5b00;

  --s1: calc(var(--base) * 0.5);
  --s2: calc(var(--base) * 1);
  --s3: calc(var(--base) * 1.75);
  --s4: calc(var(--base) * 3);
  --s5: calc(var(--base) * 5);
}

* { box-sizing: border-box; }
html { font-size: var(--base); }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: var(--leading);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

/* ---------- modular scale ---------- */
h1, h2, h3, h4 { font-family: var(--font-head); font-weight: var(--hweight); line-height: 1.15; margin: 0 0 0.5em; }
h1 { font-size: calc(1rem * var(--scale) * var(--scale) * var(--scale) * var(--scale)); letter-spacing: -0.015em; }
h2 { font-size: calc(1rem * var(--scale) * var(--scale)); letter-spacing: -0.01em; }
h3 { font-size: calc(1rem * var(--scale)); }
h4 { font-size: 1rem; text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.8rem; color: var(--ink-soft); }
.display { font-size: calc(1rem * var(--scale) * var(--scale) * var(--scale) * var(--scale) * var(--scale)); line-height: 1.05; }
small, .small { font-size: 0.85rem; }
.kicker { font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--accent); margin: 0 0 1em; }

p, ul, ol, blockquote { max-width: var(--measure); }
p { margin: 0 0 1em; }
.lede { font-size: calc(1rem * var(--scale)); line-height: 1.4; color: var(--ink-soft); }
a { color: inherit; text-decoration-color: var(--ink-faint); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--accent); }
code, .mono { font-family: var(--font-mono); font-size: 0.88em; }
pre {
  font-family: var(--font-mono); font-size: 0.82rem; line-height: 1.5;
  background: #141412; color: #e8e6df; padding: 1.2em 1.4em; overflow-x: auto;
  border-radius: 4px; max-width: calc(var(--measure) * 1.15);
}
pre .dim { color: #8a887f; }
pre .ok { color: #7fbf7f; }
pre .bad { color: #e07a6a; }
hr { border: 0; border-top: 1px solid var(--line); margin: var(--s4) 0; }
blockquote {
  margin: var(--s3) 0; padding: 0.2em 0 0.2em 1.2em;
  border-left: 3px solid var(--accent); font-style: italic; color: var(--ink-soft);
}
blockquote .attr { display: block; font-style: normal; font-family: var(--font-mono); font-size: 0.75rem; margin-top: 0.8em; color: var(--ink-faint); }

/* ---------- layout ---------- */
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 var(--s3); }
section { padding: var(--s4) 0; border-top: 1px solid var(--line); }
section.hero { border-top: 0; padding: var(--s5) 0 var(--s4); }
.band { background: var(--paper-dim); }
.band-dark { background: #141412; color: #e8e6df; }
.band-dark h2, .band-dark h3 { color: #f5f3ec; }
.band-dark .lede { color: #b8b5aa; }

.cols { display: grid; gap: var(--s3); }
.cols-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.cols-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card { border: 1px solid var(--line); padding: var(--s2) var(--s3); background: var(--paper); border-radius: 3px; }
.band-dark .card { background: #1d1d1a; border-color: #33322d; }

/* section numbering, dossier-style */
.secnum { font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink-faint); display: block; margin-bottom: 0.6em; }

/* ---------- wireframe placeholders ---------- */
.placeholder {
  border: 1.5px dashed var(--ink-faint); border-radius: 4px;
  padding: var(--s3); text-align: center; color: var(--ink-faint);
  font-family: var(--font-mono); font-size: 0.8rem; background: repeating-linear-gradient(
    45deg, transparent, transparent 12px, rgba(0,0,0,0.02) 12px, rgba(0,0,0,0.02) 24px);
}

/* ---------- buttons / CTAs ---------- */
.btn {
  display: inline-block; font-family: var(--font-sans); font-size: 0.95rem; font-weight: 600;
  padding: 0.7em 1.5em; border: 2px solid var(--ink); background: var(--ink); color: var(--paper);
  text-decoration: none; border-radius: 3px; cursor: pointer;
}
.btn.secondary { background: transparent; color: var(--ink); }
.band-dark .btn { border-color: #e8e6df; background: #e8e6df; color: #141412; }
.band-dark .btn.secondary { background: transparent; color: #e8e6df; }
.btn:focus-visible, a:focus-visible, button:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* ---------- nav / footer (injected by mock.js) ---------- */
.mock-nav {
  display: flex; align-items: baseline; gap: 1.6em; flex-wrap: wrap;
  padding: 1.1em var(--s3); border-bottom: 1px solid var(--line);
  font-family: var(--font-sans); font-size: 0.9rem;
  max-width: 1080px; margin: 0 auto;
}
.mock-nav .brand { font-family: var(--font-mono); font-weight: 700; font-size: 1rem; letter-spacing: 0.02em; margin-right: auto; text-decoration: none; }
.mock-nav .brand em { font-style: normal; color: var(--accent); }
.mock-nav a { text-decoration: none; color: var(--ink-soft); }
.mock-nav a.active { color: var(--ink); font-weight: 700; border-bottom: 2px solid var(--accent); }
.mock-footer {
  border-top: 1px solid var(--line); margin-top: var(--s5); padding: var(--s3);
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink-faint);
  max-width: 1080px; margin-left: auto; margin-right: auto;
}

/* ---------- lead form (contract fields kept) ---------- */
.lead-form { max-width: 560px; display: grid; gap: 0.9em; font-family: var(--font-sans); }
.lead-form label { font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); display: block; margin-bottom: 0.3em; }
.lead-form input, .lead-form select, .lead-form textarea {
  width: 100%; font: inherit; font-size: 0.95rem; padding: 0.6em 0.8em;
  border: 1px solid var(--ink-faint); border-radius: 3px; background: #fff; color: var(--ink);
}
[data-form-note] { font-size: 0.8rem; color: var(--ink-soft); font-family: var(--font-sans); }

/* ---------- structure annotations ---------- */
.note {
  display: none; font-family: var(--font-sans); font-size: 0.78rem; line-height: 1.45;
  background: var(--note-bg); color: var(--note-ink); border: 1px solid #e6d98a;
  padding: 0.6em 0.9em; border-radius: 3px; margin: 0 0 1.2em; max-width: var(--measure);
}
.note::before { content: "STRUCTURE ▸ "; font-weight: 700; letter-spacing: 0.05em; }
body.show-notes .note { display: block; }

/* ---------- typography control panel ---------- */
#mock-panel {
  position: fixed; right: 14px; bottom: 14px; z-index: 999;
  font-family: var(--font-sans); font-size: 13px; line-height: 1.3;
  background: #1d1d1a; color: #e8e6df; border-radius: 8px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.35); width: 250px;
}
#mock-panel .head { display: flex; justify-content: space-between; align-items: center; padding: 9px 12px; cursor: pointer; font-weight: 700; letter-spacing: 0.04em; }
#mock-panel .body { padding: 4px 12px 12px; display: none; }
#mock-panel.open .body { display: block; }
#mock-panel .row { margin: 8px 0; }
#mock-panel label { display: flex; justify-content: space-between; font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: #b8b5aa; margin-bottom: 3px; }
#mock-panel input[type=range] { width: 100%; }
#mock-panel select, #mock-panel button.opt {
  width: 100%; font: inherit; font-size: 12px; background: #33322d; color: #e8e6df;
  border: 1px solid #4a4942; border-radius: 4px; padding: 4px 6px;
}
#mock-panel .seg { display: flex; gap: 4px; }
#mock-panel .seg button { flex: 1; font-size: 11px; padding: 5px 2px; background: #33322d; color: #b8b5aa; border: 1px solid #4a4942; border-radius: 4px; cursor: pointer; }
#mock-panel .seg button.on { background: #e8e6df; color: #141412; font-weight: 700; }
#mock-panel .val { font-family: var(--font-mono); color: #e8e6df; }
#mock-panel .reset { margin-top: 8px; width: 100%; background: none; border: 1px solid #4a4942; color: #b8b5aa; border-radius: 4px; padding: 5px; cursor: pointer; font-size: 11px; }

@media (max-width: 700px) {
  :root { --base: 16px; }
  .wrap { padding: 0 1.1rem; }
  #mock-panel { width: 210px; }
}