/* ==========================================================================
   GPI International — site stylesheet
   One system, two brands. Advisory (consulting) is the default palette;
   the VMS page sets data-brand="vms" on <html> and every component recolours.
   Type, grid and spacing never change between the two — that is what makes
   two palettes read as one company.
   ========================================================================== */

@import url('fonts.css?v=1');

/* ---------- tokens ---------------------------------------------------- */
:root {
  /* Advisory — consulting, master brand */
  --ink:         #0A1424;
  --graphite:    #17263A;
  --steel:       #33465F;
  --mist:        #8D9BAE;
  --line:        #DFDAD0;
  --paper:       #F7F5F0;
  --white:       #FFFFFF;
  --accent:      #C08A2E;
  --accent-deep: #96690F;

  --measure: 68ch;
  --wrap: 1240px;
  --pad: clamp(20px, 5vw, 48px);
  --gap: clamp(28px, 4vw, 48px);
  --band: clamp(56px, 9vw, 104px);

  --display: Archivo, 'Helvetica Neue', Arial, sans-serif;
  --body: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

[data-brand="vms"] {
  /* Instrument — VMS, product brand */
  --ink:         #0B0E13;
  --graphite:    #161B22;
  --steel:       #39424E;
  --mist:        #97A1AE;
  --line:        #DFDCD5;
  --paper:       #F5F3EF;
  --accent:      #E8482A;
  --accent-deep: #B8341C;
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- type ------------------------------------------------------ */
h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.022em;
  text-wrap: balance;
  margin: 0;
}
h1 { font-size: clamp(38px, 6vw, 61px); line-height: 1.04; }
h2 { font-size: clamp(28px, 3.8vw, 39px); line-height: 1.14; }
h3 { font-size: clamp(20px, 2.2vw, 25px); line-height: 1.25; }
h4 { font-size: 18px; line-height: 1.35; }

p, ul, ol { margin: 0; }
p { max-width: var(--measure); }

a { color: var(--accent-deep); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent-deep); outline-offset: 3px; border-radius: 2px; }

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin: 0;
}
.lede { font-size: clamp(18px, 2vw, 20px); line-height: 1.6; color: var(--steel); max-width: 60ch; }
.note { font-size: 14px; line-height: 1.55; color: var(--steel); }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- layout ---------------------------------------------------- */
.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--pad); }
.band { padding-block: var(--band); }
.band + .band { border-top: 1px solid var(--line); }
.band--dark { background: var(--ink); color: var(--paper); border-top: 0; }
.band--dark + .band { border-top: 0; }
.band--dark .lede,
.band--dark .note { color: var(--mist); }
.band--dark h2, .band--dark h3 { color: var(--white); }
.band--dark .eyebrow { color: var(--accent); }
.band--dark a:not(.btn) { color: var(--accent); }

.stack { display: flex; flex-direction: column; gap: 20px; }
.stack--lg { gap: var(--gap); }
.head { display: flex; flex-direction: column; gap: 14px; margin-bottom: var(--gap); }

.cols-2, .cols-3, .cols-4 { display: grid; gap: var(--gap); }
@media (min-width: 700px)  { .cols-2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px)  { .cols-3 { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 700px)  { .cols-4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1040px) { .cols-4 { grid-template-columns: repeat(4, 1fr); } }

/* ---------- header ---------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
@supports not (backdrop-filter: blur(4px)) { .site-header { background: var(--paper); } }

.site-header .wrap {
  display: flex; align-items: center; gap: 18px;
  min-height: 68px;
}
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; color: inherit; }
.brand svg { display: block; width: 30px; height: 30px; flex: none; }
.brand-word { font-family: var(--display); font-weight: 700; font-size: 20px; letter-spacing: -0.03em; }
.brand-sub {
  display: block; font-family: var(--mono); font-size: 7.5px; font-weight: 500;
  letter-spacing: 0.2em; color: var(--steel); margin-top: 3px;
}

.nav { margin-left: auto; display: flex; align-items: center; gap: 26px; }
.nav a {
  font-size: 15px; font-weight: 500; color: var(--steel);
  text-decoration: none; padding-block: 6px;
}
.nav a:hover { color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); box-shadow: inset 0 -2px 0 var(--accent); }

.nav-toggle {
  display: none; margin-left: auto; background: none; border: 1px solid var(--line);
  padding: 9px 12px; font: 500 14px/1 var(--body); color: var(--ink); cursor: pointer; border-radius: 2px;
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line); padding: 8px var(--pad) 20px;
  }
  .nav[data-open="true"] { display: flex; }
  .nav a { padding-block: 13px; border-bottom: 1px solid var(--line); font-size: 17px; }
  .nav .btn { margin-top: 14px; text-align: center; border-bottom: 0; }
}

/* ---------- buttons --------------------------------------------------- */
.btn {
  display: inline-block; font-family: var(--body); font-size: 15px; font-weight: 600;
  padding: 13px 24px; border: 1px solid transparent; border-radius: 2px;
  text-decoration: none; cursor: pointer;
  transition: background-color 160ms ease-out, border-color 160ms ease-out, color 160ms ease-out;
}
.btn--primary { background: var(--accent); color: var(--ink); }
.btn--primary:hover { background: var(--accent-deep); color: var(--white); }
.btn--ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.btn--ghost:hover { border-color: var(--ink); }
.band--dark .btn--ghost { border-color: var(--steel); color: var(--paper); }
.band--dark .btn--ghost:hover { border-color: var(--paper); }
.nav .btn { padding: 10px 18px; font-size: 14px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 12px; }
@media (prefers-reduced-motion: reduce) { .btn { transition: none; } }

/* ---------- hero ------------------------------------------------------ */
.hero { padding-block: clamp(56px, 10vw, 116px) clamp(48px, 8vw, 88px); }
.hero h1 { margin-block: 20px 22px; max-width: 17ch; }
.hero .lede { max-width: 56ch; }

/* ---------- cards ----------------------------------------------------- */
.card {
  border: 1px solid var(--line); background: var(--white);
  padding: 26px 26px 30px; display: flex; flex-direction: column; gap: 12px;
  border-radius: 2px;
}
.card h3 { font-size: 21px; }
.card p { font-size: 15.5px; line-height: 1.6; color: var(--steel); }
.card .when {
  font-family: var(--mono); font-size: 12.5px; line-height: 1.5; color: var(--steel);
  border-left: 2px solid var(--accent); padding-left: 12px; margin-top: auto;
}
.card--plain { background: transparent; border: 0; border-top: 2px solid var(--accent); padding: 20px 0 0; }
.band--dark .card { background: var(--graphite); border-color: var(--graphite); }
.band--dark .card p, .band--dark .card .when { color: var(--mist); }

/* ---------- figures / stats ------------------------------------------- */
.figs { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 700px) { .figs { grid-template-columns: repeat(3, 1fr); } }
.fig { background: var(--paper); padding: 22px 24px; }
.band--dark .figs { background: var(--graphite); border-color: var(--graphite); }
.band--dark .fig { background: var(--ink); }
.fig-n {
  font-family: var(--mono); font-size: clamp(24px, 3vw, 30px); font-weight: 500;
  color: var(--accent-deep); font-variant-numeric: tabular-nums; letter-spacing: -0.01em;
}
.band--dark .fig-n { color: var(--accent); }
.fig-c {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.13em; text-transform: uppercase;
  color: var(--steel); margin-top: 6px;
}
.band--dark .fig-c { color: var(--mist); }

/* ---------- definition rows ------------------------------------------- */
.rows { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.row { background: var(--white); padding: 22px 26px; display: grid; gap: 8px; }
@media (min-width: 820px) { .row { grid-template-columns: minmax(180px, 250px) 1fr; gap: 32px; align-items: start; } }
.row dt, .row .k {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--steel); padding-top: 4px;
}
.row dd, .row .v { margin: 0; font-size: 16px; line-height: 1.6; }
.band--dark .rows { background: var(--graphite); border-color: var(--graphite); }
.band--dark .row { background: var(--ink); }

/* ---------- two-column comparison ------------------------------------- */
.split { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 800px) { .split { grid-template-columns: 1fr 1fr; } }
.split > div { background: var(--white); padding: 26px; }
.band--dark .split { background: var(--graphite); border-color: var(--graphite); }
.band--dark .split > div { background: var(--ink); }
.split h4 {
  font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: 0.13em;
  text-transform: uppercase; color: var(--accent-deep); margin-bottom: 12px;
}
.band--dark .split h4 { color: var(--accent); }
.split ul { list-style: none; padding: 0; display: grid; gap: 12px; }
.split li { font-size: 15.5px; line-height: 1.5; padding-left: 18px; position: relative; }
.split li::before {
  content: ""; position: absolute; left: 0; top: 0.62em;
  width: 7px; height: 1px; background: var(--accent);
}
.split li span { display: block; font-size: 13.5px; color: var(--steel); margin-top: 2px; }
.band--dark .split li span { color: var(--mist); }

/* ---------- numbered pipeline ----------------------------------------- */
.steps { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); counter-reset: step; }
@media (min-width: 940px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.step { background: var(--white); padding: 24px; display: grid; gap: 8px; align-content: start; }
.band--dark .steps { background: var(--graphite); border-color: var(--graphite); }
.band--dark .step { background: var(--ink); }
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  font-family: var(--mono); font-size: 12px; color: var(--accent-deep); letter-spacing: 0.1em;
}
.band--dark .step::before { color: var(--accent); }
.step h4 { font-family: var(--mono); font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; font-weight: 500; }
.step p { font-size: 14.5px; line-height: 1.55; color: var(--steel); }
.band--dark .step p { color: var(--mist); }

/* ---------- tables ---------------------------------------------------- */
.table-scroll { overflow-x: auto; border: 1px solid var(--line); background: var(--white); border-radius: 2px; }
table { border-collapse: collapse; width: 100%; font-size: 15px; min-width: 520px; }
th, td { text-align: left; padding: 13px 20px; border-bottom: 1px solid var(--line); vertical-align: top; }
th {
  font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: 0.13em;
  text-transform: uppercase; color: var(--steel);
}
tbody tr:last-child td { border-bottom: 0; }
td.num { font-family: var(--mono); font-variant-numeric: tabular-nums; white-space: nowrap; }

/* ---------- prose (legal pages) --------------------------------------- */
.prose { display: flex; flex-direction: column; gap: 20px; }
/* On a legal page .prose also carries .wrap, whose margin-inline:auto would centre
   a 72ch box in the viewport. Cap the children instead so the column stays left
   aligned with every other section on the site. */
.prose > * { max-width: 72ch; }
.hero--tight { padding-bottom: clamp(20px, 3vw, 34px); }
.prose h2 { font-size: clamp(22px, 2.6vw, 27px); margin-top: 20px; }
.prose h3 { font-size: 19px; margin-top: 12px; }
.prose ul { padding-left: 20px; display: grid; gap: 7px; }
.prose li { max-width: var(--measure); }
.todo {
  font-family: var(--mono); font-size: 13px; background: #FFF3CD; color: #6B4E00;
  border: 1px dashed #B8891A; padding: 1px 7px; border-radius: 2px;
}
.todo-note {
  border: 1px dashed #B8891A; background: #FFF9E8; color: #6B4E00;
  padding: 16px 20px; font-size: 14.5px; line-height: 1.55; border-radius: 2px;
}

/* ---------- footer ---------------------------------------------------- */
.site-footer { background: var(--ink); color: var(--mist); padding-block: clamp(44px, 6vw, 68px) 34px; }
.site-footer a { color: var(--paper); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.foot-grid { display: grid; gap: var(--gap); }
@media (min-width: 760px) { .foot-grid { grid-template-columns: 1.4fr 1fr 1fr; } }
.foot-grid h4 {
  font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--mist); margin-bottom: 14px;
}
.foot-list { list-style: none; padding: 0; display: grid; gap: 10px; font-size: 15px; }
.foot-brand svg { width: 34px; height: 34px; display: block; }
.foot-brand .brand-word { color: var(--paper); font-size: 22px; }
.foot-line { font-size: 15px; color: var(--mist); margin-top: 14px; max-width: 40ch; }
.colophon {
  margin-top: clamp(32px, 5vw, 52px); padding-top: 20px; border-top: 1px solid var(--graphite);
  display: flex; flex-wrap: wrap; gap: 8px 22px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
}

/* ---------- vms band on the home page --------------------------------- */
.vms-band {
  background: #0B0E13; color: #F5F3EF; padding-block: var(--band);
  border-top: 0;
}
.vms-band .eyebrow { color: #E8482A; }
.vms-band h2 { color: #FFFFFF; }
.vms-band p { color: #97A1AE; }
.vms-band .btn--primary { background: #E8482A; color: #0B0E13; }
.vms-band .btn--primary:hover { background: #B8341C; color: #F5F3EF; }
.vms-band .figs { background: #161B22; border-color: #161B22; }
.vms-band .fig { background: #0B0E13; }
.vms-band .fig-n { color: #E8482A; }
.vms-band .fig-c { color: #97A1AE; }

/* ---------- button colour overrides ----------------------------------- */
/* .nav a and .band--dark a set a link colour at a higher specificity than the
   .btn classes, so the button colours are restated here where they win. */
.nav a.btn--primary,
.band--dark a.btn--primary { background: var(--accent); color: var(--ink); }
.nav a.btn--primary:hover,
.band--dark a.btn--primary:hover { background: var(--accent-deep); color: var(--white); }
.band--dark a.btn--ghost { color: var(--paper); border-color: var(--steel); }
.band--dark a.btn--ghost:hover { border-color: var(--paper); }
.vms-band a.btn--primary { background: #E8482A; color: #0B0E13; }
.vms-band a.btn--primary:hover { background: #B8341C; color: #F5F3EF; }

/* ---------- small utilities -------------------------------------------- */
/* These exist so no element needs a style="" attribute. Inline styles are
   blocked by the Content-Security-Policy set in _headers, and keeping them out
   of the markup means the policy can stay strict. */
.mt-gap { margin-top: var(--gap); }
.mt-sm { margin-top: 16px; }
.sectors { margin-top: 28px; letter-spacing: 0.1em; text-transform: uppercase; }
.markline { display: flex; align-items: center; gap: 12px; }
.markline .m { display: block; width: 34px; height: 34px; flex: none; }
.markline .m svg { display: block; width: 100%; height: 100%; }
.markline .eyebrow { margin: 0; }
.hero .markline { margin-bottom: 6px; }
.hero .markline .m { width: 38px; height: 38px; }
