/* ============================================================
   PROCUREMENT DIPLOMAT: "The Briefing Room" design system
   Palette: matte navy / charcoal / ivory / muted gold
   Type: Newsreader (display serif) · Archivo (grotesk body)
         IBM Plex Mono (dossier utility)
   ============================================================ */

:root {
  /* --- ink & surface --- */
  --navy-0: #0B1422;      /* deepest room */
  --navy-1: #0F1B2D;      /* primary dark surface */
  --navy-2: #16263D;      /* raised navy panel */
  --navy-3: #1E3049;      /* hover / borders on dark */
  --charcoal: #23252A;
  --ivory: #F2EBDC;       /* paper */
  --ivory-2: #E9E0CC;     /* aged paper edge */
  --ivory-dim: #CFC6B2;   /* secondary text on dark */
  --ink: #1C222C;         /* text on paper */
  --ink-soft: #4A5262;    /* secondary text on paper */

  /* --- accent --- */
  --gold: #C9A96A;        /* muted gold, used sparingly */
  --gold-deep: #A8874B;
  --gold-faint: rgba(201, 169, 106, 0.14);
  --oxblood: #A65546;     /* Shadow Shark / enemy contexts ONLY */
  --steel: #7E93B8;       /* map lines, quiet diagram accents */

  /* --- type --- */
  --serif: "Newsreader", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --sans: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", "SF Mono", Menlo, Consolas, monospace;

  /* --- rhythm --- */
  --measure: 62ch;
  --pad: clamp(1.25rem, 4vw, 3rem);
  --section-gap: clamp(4.5rem, 12vh, 9rem);
  --radius: 3px;

  /* --- motion --- */
  --ease-out: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-swift: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--navy-1);
  color: var(--ivory);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, canvas { max-width: 100%; display: block; }
a { color: inherit; }

::selection { background: var(--gold); color: var(--navy-0); }

/* ---------- typography ---------- */
h1, h2, h3, .display {
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 0 0 0.6em;
}
h1 { font-size: clamp(2.6rem, 7vw, 5.2rem); }
h2 { font-size: clamp(1.9rem, 4.4vw, 3.2rem); }
h3 { font-size: clamp(1.3rem, 2.4vw, 1.7rem); }
p { margin: 0 0 1.1em; max-width: var(--measure); }
em { font-family: var(--serif); font-style: italic; }

.lede {
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  line-height: 1.55;
  color: var(--ivory-dim);
}

/* dossier eyebrow: file-reference label */
.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.4rem;
}
.eyebrow::before {
  content: "";
  width: 2.2rem; height: 1px;
  background: var(--gold);
  opacity: 0.7;
}

/* gold brush underline: brand highlight */
.u-gold {
  position: relative;
  white-space: nowrap;
}
.u-gold::after {
  content: "";
  position: absolute;
  left: -0.05em; right: -0.05em; bottom: 0.02em;
  height: 0.14em;
  background: linear-gradient(90deg, var(--gold-deep), var(--gold) 55%, var(--gold-deep));
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.9s var(--ease-out) 0.15s;
  z-index: -1;
  opacity: 0.85;
}
.is-visible .u-gold::after, .u-gold.is-visible::after { transform: scaleX(1); }

/* italic cartographer margin note */
.margin-note {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--gold);
  border-left: 2px solid var(--gold);
  padding-left: 1rem;
  max-width: 38ch;
}

/* ---------- layout ---------- */
.wrap { max-width: 72rem; margin: 0 auto; padding-inline: var(--pad); }
section { padding-block: var(--section-gap); position: relative; }
.grid-2 { display: grid; gap: clamp(2rem, 5vw, 4.5rem); grid-template-columns: 1fr; }
@media (min-width: 900px) { .grid-2 { grid-template-columns: 1fr 1fr; align-items: center; } }

/* hairline rules that read as briefing-document dividers */
.rule {
  border: 0; height: 1px; margin: 0;
  background: linear-gradient(90deg, transparent, rgba(201,169,106,0.4), transparent);
}

/* ---------- nav ---------- */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.9rem var(--pad);
  background: color-mix(in srgb, var(--navy-0) 82%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(201,169,106,0.16);
  transition: transform 0.4s var(--ease-swift);
}
.site-nav .mark {
  font-family: var(--serif);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  display: flex; align-items: center; gap: 0.6rem;
}
.site-nav .mark .knight { color: var(--gold); font-size: 1.2rem; line-height: 1; }
.site-nav ul {
  display: flex; gap: 1.6rem; list-style: none; margin: 0; padding: 0;
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase;
}
.site-nav ul a { text-decoration: none; color: var(--ivory-dim); transition: color 0.25s; padding: 0.4rem 0; }
.site-nav ul a:hover, .site-nav ul a[aria-current="page"] { color: var(--gold); }
@media (max-width: 760px) { .site-nav ul { gap: 0.9rem; } .site-nav ul li.hide-m { display: none; } }
@media (max-width: 640px) {
  .site-nav { flex-wrap: wrap; gap: 0.35rem 1rem; padding: 0.7rem 1rem; }
  .site-nav .mark { font-size: 0.95rem; }
  .site-nav ul {
    width: 100%; max-width: 100%;
    overflow-x: auto; -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    white-space: nowrap; flex-wrap: nowrap;
  }
  .site-nav ul::-webkit-scrollbar { display: none; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.7rem;
  font-family: var(--mono);
  font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.16em; text-transform: uppercase;
  text-decoration: none;
  padding: 1.05rem 1.9rem;
  border: 1px solid var(--gold);
  border-radius: var(--radius);
  color: var(--navy-0);
  background: var(--gold);
  transition: background 0.3s, color 0.3s, transform 0.3s var(--ease-out), box-shadow 0.3s;
  cursor: pointer;
}
.btn:hover { background: transparent; color: var(--gold); transform: translateY(-2px); box-shadow: 0 12px 30px -12px rgba(201,169,106,0.45); }
.btn .arrow { transition: transform 0.3s var(--ease-out); }
.btn:hover .arrow { transform: translateX(4px); }
.btn--ghost { background: transparent; color: var(--ivory); border-color: rgba(242,235,220,0.35); }
.btn--ghost:hover { border-color: var(--gold); color: var(--gold); background: transparent; }
.btn--paper { background: var(--ink); border-color: var(--ink); color: var(--ivory); }
.btn--paper:hover { background: transparent; color: var(--ink); }

/* ---------- paper artifact (ivory documents in a dark room) ---------- */
.paper {
  background: linear-gradient(178deg, var(--ivory) 0%, var(--ivory-2) 100%);
  color: var(--ink);
  border-radius: 2px;
  padding: clamp(1.6rem, 4vw, 3rem);
  box-shadow:
    0 1px 0 rgba(255,255,255,0.5) inset,
    0 30px 60px -18px rgba(0,0,0,0.55),
    0 8px 18px -8px rgba(0,0,0,0.4);
  position: relative;
}
.paper::before { /* top classification strip */
  content: attr(data-classification);
  position: absolute; top: 0.9rem; left: 50%; transform: translateX(-50%);
  font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.34em;
  color: var(--ink-soft); text-transform: uppercase;
}
.paper h3, .paper h4 { color: var(--ink); }
.paper p { color: var(--ink); }
.paper .field-label {
  font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--ink-soft);
  margin: 1.4rem 0 0.3rem;
}
.paper .fill-line {
  border-bottom: 1px dotted rgba(28,34,44,0.4);
  font-family: var(--serif); font-style: italic; font-size: 1.05rem;
  padding-bottom: 0.2rem;
}

/* rubber stamp */
.stamp {
  display: inline-block;
  font-family: var(--mono); font-weight: 600;
  font-size: 0.8rem; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--oxblood);
  border: 2px solid var(--oxblood);
  border-radius: 4px;
  padding: 0.35rem 0.9rem;
  transform: rotate(-4deg);
  opacity: 0.85;
  mask-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='40'><filter id='n'><feTurbulence baseFrequency='0.7' numOctaves='2'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.92 0'/></filter><rect width='120' height='40' filter='url(%23n)'/></svg>");
  mask-size: cover;
}
.stamp--gold { color: var(--gold-deep); border-color: var(--gold-deep); }

/* redaction bar (Great Lie treatment; bar only exists with JS to lift it) */
.redact {
  position: relative;
  display: inline;
}
.js .redact::after {
  content: "";
  position: absolute; inset: 0.08em -0.12em 0.02em;
  background: var(--charcoal);
  border-radius: 1px;
  transform-origin: left center;
  transition: transform 1s var(--ease-out);
}
.redact.is-lifted::after { transform: scaleX(0); transform-origin: right center; }

/* ---------- stat tiles (dataviz: hero numbers, thin & quiet chrome) ---------- */
.stat-wall {
  display: grid; gap: 1px;
  background: rgba(201,169,106,0.22);
  border: 1px solid rgba(201,169,106,0.22);
  grid-template-columns: repeat(auto-fit, minmax(min(15rem, 100%), 1fr));
}
.stat {
  background: var(--navy-1);
  padding: 1.8rem 1.6rem 1.6rem;
}
.stat .num {
  font-family: var(--serif);
  font-size: clamp(2.1rem, 4.2vw, 3.1rem);
  line-height: 1;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  display: block;
  margin-bottom: 0.55rem;
}
.stat .lbl {
  font-size: 0.88rem; line-height: 1.45; color: var(--ivory-dim);
  max-width: 24ch;
}
.stat .src {
  display: block; margin-top: 0.7rem;
  font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: rgba(207,198,178,0.55);
}

/* ---------- testimonial / debrief card ---------- */
.debrief {
  border: 1px solid rgba(201,169,106,0.25);
  border-left: 3px solid var(--gold);
  background: linear-gradient(180deg, var(--navy-2), var(--navy-1));
  padding: clamp(1.4rem, 3vw, 2.2rem);
  border-radius: var(--radius);
}
.debrief .tag {
  font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.26em;
  text-transform: uppercase; color: var(--gold); margin-bottom: 1rem; display: block;
}
.debrief blockquote {
  margin: 0 0 1rem;
  font-family: var(--serif); font-size: 1.18rem; line-height: 1.5;
  color: var(--ivory);
}
.debrief cite {
  font-style: normal; font-family: var(--sans); font-size: 0.85rem; color: var(--ivory-dim);
}
.debrief cite strong { color: var(--ivory); font-weight: 600; }

/* ---------- comparison ledger (Old Way vs Diplomat Way) ---------- */
.ledger { width: 100%; border-collapse: collapse; font-size: 0.98rem; }
.ledger th {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.2em; text-transform: uppercase;
  text-align: left; padding: 0.9rem 1rem; border-bottom: 1px solid rgba(201,169,106,0.4);
}
.ledger th:first-child { color: rgba(207,198,178,0.7); }
.ledger th:last-child { color: var(--gold); }
.ledger td { padding: 0.95rem 1rem; border-bottom: 1px solid rgba(242,235,220,0.08); vertical-align: top; }
.ledger td:first-child { color: rgba(207,198,178,0.75); }
.ledger td:last-child { color: var(--ivory); font-family: var(--serif); font-size: 1.05rem; }

/* ---------- reveal-on-scroll (gated on .js so no-JS still reads) ---------- */
.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out); }
.js .reveal.is-visible { opacity: 1; transform: none; }
.js .reveal[data-delay="1"] { transition-delay: 0.12s; }
.js .reveal[data-delay="2"] { transition-delay: 0.24s; }
.js .reveal[data-delay="3"] { transition-delay: 0.36s; }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid rgba(201,169,106,0.18);
  padding: 3rem var(--pad) 3.5rem;
  font-size: 0.85rem; color: var(--ivory-dim);
}
.site-footer .oathline { font-family: var(--serif); font-style: italic; font-size: 1.05rem; color: var(--ivory); margin-bottom: 1rem; }
.site-footer a { color: var(--ivory-dim); }
.site-footer a:hover { color: var(--gold); }
.site-footer .cols { display: flex; flex-wrap: wrap; gap: 2.5rem; justify-content: space-between; max-width: 72rem; margin: 0 auto; }

/* ---------- accessibility & motion safety ---------- */
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 2px; }
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--gold); color: var(--navy-0); padding: 0.7rem 1.2rem;
  font-family: var(--mono); font-size: 0.8rem;
}
.skip-link:focus { left: 0.5rem; top: 0.5rem; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
  .js .redact::after { transform: scaleX(0); }
}