/* Field Manual — shared visual system for both volumes.
 * Terminal Noir applied to a long-read reference document.
 * Paper mode: black page, dim body, red as wound.
 * Print mode: strips to ink on paper. */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600;700&family=Source+Serif+Pro:ital,wght@0,400;0,600;0,700;1,400;1,600&display=swap');

:root {
  --page:   #0e0d0c;
  --body:   #d6d0c2;
  --dim:    #8c857a;
  --ghost:  #5a554d;
  --steel:  #3a3632;
  --red:    #c8322a;
  --bruise: #7a2420;
  --rule:   #2a2622;

  --mono:  "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --serif: "Source Serif Pro", "Source Serif 4", Georgia, serif;

  --col: 640px;   /* comfortable reading measure */
}

html, body { margin: 0; padding: 0; background: var(--page); color: var(--body); }
body {
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.55;
  font-feature-settings: "kern", "liga";
  -webkit-font-smoothing: antialiased;
}

/* scan-line texture, very subtle */
body::before {
  content: "";
  position: fixed; inset: 0;
  background: repeating-linear-gradient(0deg,
    transparent 0, transparent 2px,
    rgba(255,255,255,0.012) 2px, rgba(255,255,255,0.012) 3px);
  pointer-events: none;
  z-index: 1;
}

main { position: relative; z-index: 2; }

/* Masthead */
.mast {
  border-bottom: 1px solid var(--rule);
  padding: 28px 40px 20px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--dim);
  text-transform: uppercase;
}
.mast .left { display: flex; gap: 24px; align-items: center; }
.mast .vol  { color: var(--red); }
.mast .right { text-align: right; color: var(--ghost); font-size: 10px; }

/* Cover block */
.cover {
  max-width: 720px;
  margin: 0 auto;
  padding: 120px 40px 80px;
}
.cover .kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--red);
  margin: 0 0 32px;
  text-transform: uppercase;
}
.cover h1 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 72px;
  line-height: 0.95;
  letter-spacing: -1.5px;
  margin: 0 0 12px;
  color: #f3ecd9;
}
.cover h1 em {
  font-style: italic;
  color: var(--red);
  font-weight: 700;
}
.cover .sub {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--dim);
  text-transform: uppercase;
  margin: 32px 0 0;
}
.cover .deck {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.5;
  color: var(--body);
  max-width: 520px;
  margin: 48px 0 0;
  font-style: italic;
}
.cover .deck .attrib {
  font-style: normal;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ghost);
  letter-spacing: 1px;
  display: block;
  margin-top: 12px;
}

/* Section rules */
.rule {
  border-top: 1px solid var(--rule);
  margin: 64px auto 0;
  max-width: var(--col);
  padding: 0 40px;
}
.rule.full { max-width: none; margin-left: 40px; margin-right: 40px; }

/* Preface */
.preface {
  max-width: var(--col);
  margin: 56px auto;
  padding: 0 40px;
}
.preface p { margin: 0 0 16px; color: var(--body); }
.preface p + p { text-indent: 1.4em; }   /* book-style paragraph indent */
.preface .first { text-indent: 0; font-size: 19px; }

/* Act heading */
.act {
  max-width: var(--col);
  margin: 96px auto 40px;
  padding: 0 40px;
}
.act .label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 4px;
  color: var(--red);
  text-transform: uppercase;
  margin: 0 0 8px;
}
.act h2 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 40px;
  line-height: 1.05;
  letter-spacing: -0.5px;
  margin: 0 0 12px;
  color: #f3ecd9;
}
.act .note {
  font-family: var(--serif);
  font-style: italic;
  color: var(--dim);
  font-size: 16px;
  margin: 0;
}

/* Lesson — the atomic unit */
.lesson {
  max-width: var(--col);
  margin: 72px auto;
  padding: 0 40px;
  position: relative;
}
.lesson .num {
  position: absolute;
  top: 6px;
  left: -12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--ghost);
}
.lesson h3 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 28px;
  line-height: 1.1;
  letter-spacing: -0.3px;
  margin: 0 0 6px;
  color: #f3ecd9;
}
.lesson .tagline {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--red);
  text-transform: uppercase;
  margin: 0 0 24px;
}
.lesson p { margin: 0 0 16px; }
.lesson p em { font-style: italic; color: #e8e1d2; }
.lesson strong { font-weight: 600; color: #f3ecd9; }

/* Sub-heads inside a lesson. Mono, small, colored, no underline. */
.lesson h4 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--dim);
  text-transform: uppercase;
  margin: 32px 0 10px;
  font-weight: 500;
}

/* Code / queries / policies */
pre, code {
  font-family: var(--mono);
  font-size: 13px;
}
.lesson pre {
  background: #1a1815;
  border-left: 2px solid var(--red);
  padding: 14px 16px;
  margin: 12px 0 16px;
  overflow-x: auto;
  color: var(--body);
  line-height: 1.55;
}
.lesson pre .cm  { color: var(--ghost); }    /* comment */
.lesson pre .kw  { color: #e0a060; }          /* keyword */
.lesson pre .str { color: #9ab890; }          /* string */
.lesson pre .bad { color: var(--red); }       /* highlighted bad */

.lesson code:not(pre code) {
  background: rgba(200, 50, 42, 0.08);
  color: #e0a060;
  padding: 1px 4px;
  border-radius: 2px;
  font-size: 0.88em;
}

/* Marginal notes — the "field-manual" voice */
.margin {
  border-left: 1px solid var(--steel);
  padding: 4px 0 4px 14px;
  margin: 20px 0;
  font-size: 15px;
  color: var(--dim);
  font-style: italic;
}
.margin b { color: var(--body); font-weight: 600; font-style: normal; font-family: var(--mono); font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; display: block; margin-bottom: 4px; }

/* Real-world citation row */
.cites {
  margin: 16px 0 0;
  padding: 14px 0;
  border-top: 1px dashed var(--steel);
  border-bottom: 1px dashed var(--steel);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
  line-height: 1.7;
}
.cites .label { color: var(--red); letter-spacing: 2px; display: block; margin-bottom: 4px; font-size: 10px; text-transform: uppercase; }

/* List — no heavy bullets */
ul.clean { list-style: none; padding: 0; margin: 0 0 16px; }
ul.clean li { padding-left: 18px; position: relative; margin-bottom: 6px; }
ul.clean li::before {
  content: "—"; position: absolute; left: 0; color: var(--steel);
}

/* Closer */
.closer {
  max-width: var(--col);
  margin: 96px auto 56px;
  padding: 48px 40px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.closer .label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 4px;
  color: var(--red);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.closer p { margin: 0 0 12px; font-size: 17px; }
.closer .novel {
  font-family: var(--serif);
  font-style: italic;
  color: #f3ecd9;
}

/* Colophon */
.colo {
  max-width: var(--col);
  margin: 0 auto 80px;
  padding: 0 40px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ghost);
  line-height: 1.7;
  letter-spacing: 0.5px;
}
.colo a { color: var(--dim); text-decoration: none; border-bottom: 1px dotted var(--steel); }
.colo a:hover { color: var(--red); border-bottom-color: var(--red); }

/* Footer running line */
.running {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 3px;
  color: var(--steel);
  text-align: center;
  margin: 48px 0 24px;
  text-transform: uppercase;
}

/* ─── PRINT ─────────────────────────────────────────────────────── */
@media print {
  :root {
    --page:  #ffffff;
    --body:  #14110e;
    --dim:   #666059;
    --ghost: #8a847b;
    --steel: #bfb9ae;
    --red:   #8a1a14;
    --bruise:#5a1612;
    --rule:  #cfc9be;
  }
  body { font-size: 11pt; }
  body::before { display: none; }
  .mast { border-bottom: 0.5pt solid var(--rule); }
  .cover h1 { color: #14110e; font-size: 44pt; }
  .act h2 { color: #14110e; font-size: 22pt; }
  .lesson h3 { color: #14110e; }
  .lesson pre { background: #f5f2ec; border-left: 2pt solid var(--red); }
  .cover, .preface, .act, .lesson, .closer, .colo { page-break-inside: avoid; }
  .act { page-break-before: always; }
  .lesson { page-break-before: always; }
  @page { margin: 2cm; }
}

/* ─── SMALL SCREENS ─────────────────────────────────────────────── */
@media (max-width: 720px) {
  .mast { padding: 20px 20px 14px; flex-direction: column; gap: 8px; align-items: flex-start; }
  .mast .right { text-align: left; }
  .cover { padding: 60px 24px 40px; }
  .cover h1 { font-size: 44px; letter-spacing: -1px; }
  .cover .deck { font-size: 16px; }
  .preface, .act, .lesson, .closer, .colo { padding: 0 24px; }
  .act h2 { font-size: 28px; }
  .lesson h3 { font-size: 22px; }
  .lesson .num { position: static; display: block; margin-bottom: 6px; }
}