/* Army-576 AI Route Planning — Richtscheid HostIT UG
   Self-contained. No external resources, no webfonts, no scripts. */

:root {
  --bg:        #FFFFFF;
  --bg-alt:    #F1F5F9;
  --ink:       #1B2333;
  --ink-2:     #556074;
  --accent:    #0F766E;
  --accent-lt: #5EEAD4;
  --rule:      #E2E8F0;
  --rule-alt:  #DCE3EC;
  --navy:      #151B2E;
  --on-navy:   #C3CBDA;
  --on-navy-2: #8C97AB;
  --threat:    #B91C1C;
  --measure:   34em;
  --pad:       1.5rem;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.62;
  text-align: left;
  overflow-wrap: break-word;
}

a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 10;
  background: var(--bg); color: var(--accent); padding: 0.6rem 1rem;
}
.skip:focus { left: 0; }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.9375em;
}

/* ---------- Layout ---------- */

.wrap {
  width: 100%;
  max-width: 46rem;
  margin: 0 auto;
  padding: 0 var(--pad);
}

main section { padding: 3.25rem 0; border-top: 1px solid var(--rule); }
main section.alt { background: var(--bg-alt); }
main section:first-child { border-top: 0; }

p { max-width: var(--measure); margin: 0 0 1.05rem; }
p:last-child { margin-bottom: 0; }

/* ---------- Masthead: header + hero + figures, one dark field ---------- */

.masthead { background: var(--navy); color: #FFFFFF; }

.bar-row {
  display: flex; flex-wrap: wrap; align-items: baseline;
  justify-content: space-between; gap: 0.15rem 1.5rem;
  padding-top: 1.05rem; padding-bottom: 1.05rem;
  border-bottom: 1px solid rgba(255,255,255,0.10);
}
.bar-brand  { font-weight: 600; font-size: 0.9375rem; }
.bar-entity { font-size: 0.9375rem; color: var(--on-navy); }

.hero { padding-top: 4.25rem; padding-bottom: 3.5rem; }

h1 {
  margin: 0 0 1.4rem;
  font-size: clamp(2.15rem, 6.4vw, 3.4rem);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.026em;
}

.lead { font-size: 1.1875rem; line-height: 1.55; color: var(--on-navy); }

/* ---------- Figures strip ---------- */

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin: 0;
  border-top: 1px solid rgba(255,255,255,0.14);
}
.stat {
  padding: 1.15rem 1.25rem 1.25rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.stat:nth-child(odd) { padding-right: 1.5rem; }
.stat dt {
  font-size: 1.5rem; font-weight: 700; line-height: 1.15;
  letter-spacing: -0.018em; color: #FFFFFF;
}
.stat dd {
  margin: 0.3rem 0 0; font-size: 0.875rem; line-height: 1.45;
  color: var(--on-navy-2);
}
@media (min-width: 46em) {
  .stats { grid-template-columns: repeat(4, 1fr); }
  .stat { border-bottom: 0; padding: 1.35rem 1.15rem 1.5rem 0; }
  .stat:nth-child(odd) { padding-right: 1.15rem; }
}

/* ---------- Headings ---------- */

h2 {
  margin: 0 0 1.15rem;
  font-size: 1.375rem; font-weight: 600; line-height: 1.28;
  letter-spacing: -0.012em;
}
h3 { margin: 0 0 0.5rem; font-size: 1rem; font-weight: 600; line-height: 1.35; }

/* ---------- Columns ---------- */

.cols { display: grid; grid-template-columns: 1fr; gap: 1.85rem; }
@media (min-width: 44em) {
  .cols   { grid-template-columns: 1fr 1fr; gap: 2.25rem; }
  .cols-3 { grid-template-columns: repeat(3, 1fr); gap: 1.9rem; }
}
.col p { max-width: none; }

/* ---------- Diagram ---------- */

.diagram { margin: 0 0 2.25rem; }
.diagram-canvas { overflow-x: auto; }
.diagram svg { display: block; width: 100%; min-width: 30rem; height: auto; font-family: inherit; }
.diagram figcaption {
  margin-top: 0.75rem; font-size: 0.875rem; color: var(--ink-2);
  max-width: var(--measure);
}

.diagram .contour path { fill: none; stroke: var(--rule-alt); stroke-width: 1; }
.diagram .zone polygon { fill: var(--threat); fill-opacity: 0.09; stroke: var(--threat); stroke-opacity: 0.42; stroke-width: 1.25; }
.diagram .zone circle  { fill: var(--threat); fill-opacity: 0.75; }
.diagram .node circle  { fill: var(--ink); }

.diagram .rt { fill: none; stroke-linecap: round; stroke-linejoin: round; }
.diagram .rt-direct  { stroke: #94A3B8; stroke-width: 2;   stroke-dasharray: 2 5; }
.diagram .rt-safe    { stroke: var(--ink-2); stroke-width: 2.5; stroke-dasharray: 9 5; }
.diagram .rt-conceal { stroke: var(--accent); stroke-width: 3.2; }

.diagram text { font-size: 16px; fill: var(--ink-2); }
.diagram .lbl-zone { fill: var(--threat); }

.key { list-style: none; margin: 1.1rem 0 0; padding: 0; max-width: var(--measure); }
.key li {
  display: flex; align-items: center; gap: 0.7rem;
  padding: 0.3rem 0; font-size: 0.9375rem; color: var(--ink-2);
}
.sw { flex: 0 0 2.5rem; height: 0; }
.sw-conceal { border-top: 3px solid var(--accent); }
.sw-safe    { border-top: 3px dashed var(--ink-2); }
.sw-direct  { border-top: 2px dotted #94A3B8; }

/* ---------- Fact list ---------- */

.facts { list-style: none; margin: 0; padding: 0; max-width: var(--measure); }
.facts li { padding: 0.65rem 0; border-top: 1px solid var(--rule); }
.facts li:first-child { border-top: 0; padding-top: 0; }
section.alt .facts li { border-color: var(--rule-alt); }

/* ---------- Record blocks ---------- */

.record { margin: 1.5rem 0 0; max-width: none; }
.record .row {
  display: grid; grid-template-columns: 1fr; gap: 0 1.25rem;
  padding: 0.6rem 0; border-top: 1px solid var(--rule);
}
.record .row:last-child { border-bottom: 1px solid var(--rule); }
section.alt .record .row { border-color: var(--rule-alt); }
.record dt { color: var(--ink-2); font-size: 0.875rem; }
.record dd { margin: 0; }
@media (min-width: 30em) { .record .row { grid-template-columns: 12rem 1fr; } }

/* ---------- Team ---------- */

.person .role {
  margin: 0 0 0.6rem; color: var(--ink-2); font-size: 0.9375rem;
  padding-bottom: 0.6rem; border-bottom: 1px solid var(--rule-alt);
}

/* ---------- Footer ---------- */

.bar-foot { background: var(--navy); color: #FFFFFF; padding: 2.25rem 0; }
.bar-foot p { max-width: none; margin: 0; font-size: 0.875rem; line-height: 1.6; }
.bar-foot .foot-name  { color: var(--on-navy); }
.bar-foot .foot-links { margin-top: 0.55rem; }
.bar-foot a { color: var(--accent-lt); }
.bar-foot :focus-visible { outline-color: var(--accent-lt); }
.bar-foot .foot-links span { color: #4B5673; padding: 0 0.15rem; }

/* ---------- Product screenshot (enabled from index.html) ---------- */

.shot { margin: 0; }
.shot img {
  display: block; width: 100%; height: auto;
  border: 1px solid var(--rule); background: var(--navy);
}
.shot figcaption {
  margin-top: 0.75rem; font-size: 0.875rem; color: var(--ink-2);
  max-width: var(--measure);
}

/* ---------- Legal pages ---------- */

.legal { padding: 3rem 0 3.5rem; }
.legal h1 { font-size: clamp(1.75rem, 5vw, 2.35rem); margin-bottom: 1.75rem; color: var(--ink); }
.legal h2 {
  margin-top: 2.15rem; padding-top: 1.15rem;
  border-top: 1px solid var(--rule); font-size: 1.125rem;
}
.legal h2:first-of-type { margin-top: 1.5rem; }
.legal ul { max-width: var(--measure); padding-left: 1.15rem; margin: 0 0 1.05rem; }
.legal li { margin-bottom: 0.3rem; }
.legal address { font-style: normal; margin: 0 0 1.05rem; }
.legal .updated { color: var(--ink-2); font-size: 0.9375rem; margin-top: 2.5rem; }
.legal .back { margin-top: 2rem; font-size: 0.9375rem; }

@media (max-width: 24em) { :root { --pad: 1.25rem; } }

/* ---------- Print (A4) ---------- */

@media print {
  @page { size: A4; margin: 13mm 15mm; }

  body { font-size: 9.5pt; line-height: 1.38; color: #000; background: #fff; }
  .wrap { max-width: none; padding: 0; }
  .skip { display: none; }

  /* The masthead is white-on-navy on screen. Safari and Firefox do not print
     backgrounds by default, so force a white ground AND black text here —
     the page then reads correctly whether or not backgrounds are printed. */
  .masthead, .bar-foot { background: #FFFFFF !important; color: #000 !important; }
  .masthead h1, .masthead p, .masthead span, .masthead dt, .masthead dd,
  .bar-foot p, .bar-foot span, .bar-foot a { color: #000 !important; }
  .bar-row { padding: 0 0 4pt; border-bottom: 1pt solid #000; }
  .bar-brand, .bar-entity { font-size: 9.5pt; }

  .hero { padding: 9pt 0 7pt; }
  h1 { font-size: 19pt; margin-bottom: 5pt; }
  .lead { font-size: 10.5pt; }

  .stats {
    grid-template-columns: repeat(4, 1fr);
    border-top: 0.5pt solid #999; break-inside: avoid;
  }
  .stat { padding: 5pt 8pt 6pt 0; border-bottom: 0; }
  .stat dt { font-size: 12pt; }
  .stat dd { font-size: 7.5pt; line-height: 1.3; }

  main section {
    padding: 7pt 0; border-top: 0.5pt solid #999;
    background: none !important; break-inside: avoid;
  }
  h2 { font-size: 11pt; margin-bottom: 4pt; break-after: avoid; }
  h3 { font-size: 9.5pt; break-after: avoid; }
  p, .record, .facts { max-width: none; }
  p { margin-bottom: 4pt; }

  .cols   { grid-template-columns: 1fr 1fr;      gap: 12pt; }
  .cols-3 { grid-template-columns: repeat(3,1fr); gap: 10pt; }

  .diagram { max-width: 112mm; margin-bottom: 8pt; break-inside: avoid; }
  .diagram-canvas { overflow: visible; }
  .diagram svg { min-width: 0; }
  .diagram figcaption { font-size: 7.5pt; margin-top: 4pt; }
  .key { margin-top: 6pt; max-width: none; }
  .key li { font-size: 7.5pt; padding: 1pt 0; color: #000; }

  .record .row { grid-template-columns: 34mm 1fr; padding: 2.5pt 0; border-color: #999; break-inside: avoid; }
  .record .row:last-child { border-bottom-color: #999; }
  .record dt { color: #000; font-size: 9pt; }
  .facts li { padding: 2.5pt 0; border-color: #999; break-inside: avoid; }
  .person .role { color: #000; border-color: #999; font-size: 9pt; margin-bottom: 4pt; padding-bottom: 4pt; }
  .shot { break-inside: avoid; }
  .shot img { border-color: #999; }

  .bar-foot { padding: 0; margin-top: 8pt; padding-top: 5pt; border-top: 1pt solid #000; }
  .bar-foot p { font-size: 8.5pt; }

  a { color: #000; text-decoration: none; }
  a[href^="/"]::after    { content: " (https://army-576.com" attr(href) ")"; font-size: 8pt; color: #444; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 8pt; color: #444; }

  .legal h2 { border-color: #999; margin-top: 11pt; padding-top: 7pt; }
  .legal .back { display: none; }
}