/* ============================================================
   Squad Field Manual — base.css
   Design tokens, reset, page chrome, and elements shared by
   every page (landing + manual). Page-specific rules live in
   landing.css and manual.css.
   ============================================================ */

:root{
  /* palette — olive-drab printed field manual */
  --paper:#d6d3bf;
  --paper-hi:#e2dfcd;
  --paper-lo:#c9c6b0;
  --ink:#232619;
  --ink-soft:#4a4d3c;
  --olive:#4d5c2e;
  --olive-deep:#37431f;
  --sand:#b3a878;
  --alert:#8e3a2b;
  --intel:#38536b;
  --line:#a8a58d;
  --key-face:#efedde;
  --key-edge:#8f8c74;

  --radius:3px;
  --sidebar-w:296px;
  --content-w:780px;

  --font-display:"Black Ops One",Impact,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,monospace;
  --font-body:"IBM Plex Sans",system-ui,-apple-system,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}

body{
  font-family:var(--font-body);
  background:var(--paper);
  color:var(--ink);
  line-height:1.65;
  font-size:16px;
  /* faint map grid */
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size:140px 140px;
  background-position:-1px -1px;
}
::selection{background:var(--olive);color:var(--paper-hi)}

a{color:var(--intel)}

/* ---------- top bar (shared) ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;height:58px;z-index:60;
  background:var(--olive-deep);
  color:#e8e6d4;
  display:flex;align-items:center;gap:14px;
  padding:0 18px;
  border-bottom:3px solid var(--ink);
}
.topbar .burger{
  display:none;
  background:none;border:1px solid rgba(232,230,212,.4);color:#e8e6d4;
  width:38px;height:38px;border-radius:var(--radius);cursor:pointer;
  font-size:18px;line-height:1;
}
.brand{display:flex;align-items:baseline;gap:10px;text-decoration:none;color:inherit}
.brand .stencil{
  font-family:var(--font-display);
  font-size:21px;letter-spacing:.06em;
}
.brand .fm{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;
  text-transform:uppercase;opacity:.75;
}
.topbar .spacer{margin-left:auto}
.topbar .version{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:#c9c6a9;text-transform:uppercase;
}
.topbar .version b{color:#fff;font-weight:600}
.topbar .nav-link{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:#e8e6d4;text-decoration:none;
  padding:8px 12px;border:1px solid rgba(232,230,212,.35);border-radius:var(--radius);
}
.topbar .nav-link:hover{background:rgba(232,230,212,.14)}

/* ---------- keycap (shared, used in prose + legends) ---------- */
kbd{
  font-family:var(--font-mono);font-size:.82em;font-weight:600;
  background:linear-gradient(var(--key-face),#dedbc8);
  border:1px solid var(--key-edge);
  border-bottom-width:3px;
  border-radius:4px;
  padding:2px 7px;
  white-space:nowrap;
  color:var(--ink);
}

/* focus visibility (shared quality floor) */
:focus-visible{outline:2px solid var(--olive-deep);outline-offset:2px}