/* ============================================================================
   logistics.vibecraftedsoftware.com — Milestone 2 pitch site
   Palette: the pinned VCS monochrome ramp (app-standards 05-frontend.md).
   Zero hue on marketing pages, matching the parent site. The single
   exception is the functional red validation-error state, used only for
   that and never as decoration.
   One central stylesheet, per website-build-standards.
   ========================================================================= */

/* -- 1. Tokens ------------------------------------------------------------ */
:root {
  color-scheme: light dark;

  --gray-950:#050505; --gray-900:#0c0c0c; --gray-800:#262626; --gray-700:#404040;
  --gray-600:#525252; --gray-500:#6b6b6b; --gray-400:#a3a3a3; --gray-300:#d4d4d4;
  --gray-200:#e5e5e5; --gray-100:#f0f0f0; --gray-50:#f7f7f7;

  --ground:  var(--gray-50);
  --surface: #ffffff;
  --sunk:    var(--gray-100);
  --ink:     var(--gray-900);
  --muted:   var(--gray-600);
  --faint:   var(--gray-400);
  --rule:    var(--gray-200);
  --rule-strong: var(--gray-300);
  --error:   #b91c1c;
  --error-bg:#fdf2f2;
  --ok:      var(--gray-800);

  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --measure: 63ch;
  --pad: clamp(1.25rem, 4vw, 3rem);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground:  var(--gray-950);
    --surface: var(--gray-900);
    --sunk:    #101010;
    --ink:     var(--gray-100);
    --muted:   var(--gray-400);
    --faint:   var(--gray-500);
    --rule:    var(--gray-800);
    --rule-strong: var(--gray-700);
    --error:   #f87171;
    --error-bg:#241010;
    --ok:      var(--gray-300);
  }
}
:root[data-theme="dark"] {
  --ground:  var(--gray-950);
  --surface: var(--gray-900);
  --sunk:    #101010;
  --ink:     var(--gray-100);
  --muted:   var(--gray-400);
  --faint:   var(--gray-500);
  --rule:    var(--gray-800);
  --rule-strong: var(--gray-700);
  --error:   #f87171;
  --error-bg:#241010;
  --ok:      var(--gray-300);
}

/* -- 2. Reset and base ---------------------------------------------------- */
*,*::before,*::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 400 1rem/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
h1,h2,h3,h4 { text-wrap: balance; margin: 0; font-weight: 650; letter-spacing: -0.015em; }
h1 { font-size: clamp(2rem, 5.2vw, 3rem); line-height: 1.08; letter-spacing: -0.028em; }
h2 { font-size: clamp(1.375rem, 2.6vw, 1.75rem); line-height: 1.2; }
h3 { font-size: 1.0625rem; line-height: 1.35; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--ink); outline-offset: 2px; border-radius: 1px;
}
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--ink); color: var(--ground); padding: 0.625rem 1rem;
  font-weight: 650;
}
.skip-link:focus { left: 0; }

/* -- 3. Layout helpers ---------------------------------------------------- */
.shell { max-width: 74rem; margin: 0 auto; padding: 0 var(--pad); }
.lede  { max-width: var(--measure); }
.eyebrow {
  font-size: 0.75rem; font-weight: 650; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--muted);
}
.num { font-variant-numeric: tabular-nums; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); }

/* -- 4. Header ------------------------------------------------------------ */
header.top {
  border-bottom: 1px solid var(--rule);
  background: var(--surface);
}
/* Sticky only where it is cheap. Below this width the nav wraps to two
   rows and the header measures ~138px -- 15% of a phone viewport spent
   permanently on navigation. It scrolls away instead. */
@media (min-width: 48rem) {
  header.top { position: sticky; top: 0; z-index: 10; }
}
.top-in {
  display: flex; align-items: center; gap: 1.5rem;
  min-height: 3.75rem; flex-wrap: wrap;
}
.wordmark {
  font-weight: 700; letter-spacing: -0.03em; font-size: 1.125rem;
  display: flex; align-items: baseline; gap: 0.5rem;
}
.wordmark span { font: 400 0.6875rem/1 var(--mono); color: var(--muted); letter-spacing: 0.06em; }
nav.top-nav { margin-left: auto; display: flex; gap: 1.5rem; flex-wrap: wrap; }
nav.top-nav a { font-size: 0.9375rem; color: var(--muted); }
nav.top-nav a:hover { color: var(--ink); }
nav.top-nav a.cta {
  border: 1px solid var(--rule-strong); padding: 0.3125rem 0.875rem;
  color: var(--ink);
}
nav.top-nav a.cta:hover { background: var(--sunk); }

/* -- 5. Status strip ------------------------------------------------------ */
.status {
  border-bottom: 1px solid var(--rule); background: var(--sunk);
  font-size: 0.875rem; color: var(--muted);
}
.status .shell { padding-block: 0.625rem; display: flex; gap: 0.625rem; align-items: baseline; flex-wrap: wrap; }
.status b { color: var(--ink); font-weight: 650; }

/* -- 6. Sections ---------------------------------------------------------- */
section { border-bottom: 1px solid var(--rule); }
section > .shell { padding-block: clamp(2.75rem, 6vw, 4.5rem); }
.sec-head { display: grid; gap: 0.75rem; margin-bottom: 2rem; }

/* -- 7. Hero -------------------------------------------------------------- */
#hero { background: var(--surface); }
#hero > .shell {
  display: grid; gap: clamp(2.25rem, 5vw, 3.5rem);
  grid-template-columns: minmax(0,1fr);
}
@media (min-width: 62rem) { #hero > .shell { grid-template-columns: 1.05fr 0.95fr; align-items: start; } }
.hero-copy { display: grid; gap: 1.25rem; align-content: start; }
.hero-copy p.big { font-size: 1.1875rem; line-height: 1.55; color: var(--muted); max-width: 46ch; }
.hero-copy strong { color: var(--ink); font-weight: 650; }
.hero-ctas { display: flex; gap: 0.875rem; flex-wrap: wrap; align-items: center; margin-top: 0.25rem; }

/* -- 8. Buttons ----------------------------------------------------------- */
/* No accent colour to build hierarchy with, so hierarchy is carried by
   fill vs outline and by weight. See the monochrome gotcha in
   website-sales-tool. */
.btn {
  font: 650 0.9375rem/1 var(--sans); padding: 0.6875rem 1.25rem;
  border: 1px solid var(--ink); cursor: pointer; display: inline-block;
}
.btn-primary { color: var(--ground); background: var(--ink); }
.btn-primary:hover { background: var(--gray-700); border-color: var(--gray-700); }
.btn-secondary { color: var(--ink); background: transparent; border-color: var(--rule-strong); font-weight: 400; }
.btn-secondary:hover { background: var(--sunk); border-color: var(--ink); }

/* -- 9. Correctness specimen ---------------------------------------------- */
.specimen { border: 1px solid var(--rule-strong); background: var(--ground); margin: 0; }
.specimen-cap {
  padding: 0.75rem 1rem; border-bottom: 1px solid var(--rule);
  font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em;
  font-weight: 650; color: var(--muted);
}
.panes { display: grid; }
.pane { padding: 1.125rem 1rem 1.25rem; }
.pane + .pane { border-top: 1px solid var(--rule); }
.pane-tag { font-size: 0.8125rem; color: var(--muted); margin-bottom: 0.75rem; }
.pane-tag b { color: var(--ink); font-weight: 650; }
.figs { display: grid; gap: 0.5rem; font-family: var(--mono); font-variant-numeric: tabular-nums; }
.fig { display: flex; align-items: baseline; gap: 0.75rem; font-size: 0.875rem; }
.fig-k { color: var(--muted); min-width: 7.5rem; }
.fig-v { font-size: 1.375rem; font-weight: 500; letter-spacing: -0.01em; }
.fig-note { font-size: 0.8125rem; color: var(--muted); margin-top: 0.75rem; }
.strike { text-decoration: line-through; text-decoration-thickness: 1px; color: var(--faint); }
.verdict {
  padding: 0.875rem 1rem; border-top: 1px solid var(--rule-strong);
  font-size: 0.875rem; color: var(--muted); background: var(--sunk);
}
.verdict b { color: var(--ink); font-weight: 650; }

/* -- 10. Register table --------------------------------------------------- */
.register-wrap { overflow-x: auto; border: 1px solid var(--rule-strong); background: var(--surface); }
table.register { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 0.8125rem; }
/* The caption is a short accessible label only. The long explanatory note
   lives in .register-note OUTSIDE the scroll container -- inside it, the
   caption box stretches to the table's full 992px scroll width and the
   text is clipped instead of wrapping. */
table.register caption {
  text-align: left; padding: 0.625rem 0.875rem; font-size: 0.6875rem;
  text-transform: uppercase; letter-spacing: 0.08em; font-weight: 650;
  color: var(--muted); border-bottom: 1px solid var(--rule);
  position: sticky; left: 0;
}
.register-note {
  font-size: 0.8125rem; color: var(--muted); margin-top: 0.75rem;
  max-width: 70ch;
}
table.register th {
  text-align: left; font-weight: 650; color: var(--muted); white-space: nowrap;
  padding: 0.625rem 0.875rem; border-bottom: 1px solid var(--rule-strong);
  font-size: 0.6875rem; text-transform: uppercase; letter-spacing: 0.08em;
}
table.register td {
  padding: 0.5625rem 0.875rem; border-bottom: 1px solid var(--rule);
  white-space: nowrap; font-variant-numeric: tabular-nums;
}
table.register tr:last-child td { border-bottom: 0; }
th.r, td.r { text-align: right; }
.slip-late  { font-weight: 650; }
.slip-early { color: var(--muted); }
.dash { color: var(--faint); }
.partial { color: var(--muted); font-size: 0.75rem; }

/* -- 11. Numbered reason list --------------------------------------------- */
.reasons { display: grid; gap: 0; border-top: 1px solid var(--rule); list-style: none; margin: 0; padding: 0; }
.reason {
  display: grid; gap: 0.375rem; padding: 1.25rem 0;
  border-bottom: 1px solid var(--rule);
  grid-template-columns: 2.5rem minmax(0,1fr);
}
.reason-n { font: 650 0.8125rem/1.7 var(--mono); color: var(--faint); }
.reason h3 { grid-column: 2; }
.reason p { grid-column: 2; color: var(--muted); max-width: var(--measure); }
.reason q { color: var(--ink); }

/* -- 12. Module register -------------------------------------------------- */
.modules { display: grid; gap: 0; border-top: 1px solid var(--rule); list-style: none; margin: 0; padding: 0; }
.module {
  display: grid; gap: 0.25rem 1.25rem; padding: 1rem 0;
  border-bottom: 1px solid var(--rule);
  grid-template-columns: minmax(0,1fr);
}
@media (min-width: 48rem) {
  .module { grid-template-columns: 12rem minmax(0,1fr) 8.5rem; align-items: baseline; }
  .module .one-row { text-align: right; }
}
.module h3 { font-size: 1rem; }
.module p { color: var(--muted); font-size: 0.9375rem; max-width: 58ch; }
.module .one-row { font: 400 0.75rem/1.5 var(--mono); color: var(--faint); }

/* -- 13. Two-up split ----------------------------------------------------- */
.split { display: grid; gap: clamp(2rem, 4vw, 3rem); }
@media (min-width: 54rem) { .split { grid-template-columns: 1fr 1fr; } }
.stack { display: grid; gap: 0.875rem; align-content: start; }
.plainlist { display: grid; gap: 0.6875rem; list-style: none; padding: 0; margin: 0; }
.plainlist li { display: grid; grid-template-columns: 1.25rem 1fr; gap: 0.5rem; color: var(--muted); font-size: 0.9375rem; }
.plainlist .mk { font-family: var(--mono); color: var(--faint); }
.plainlist b { color: var(--ink); font-weight: 650; }

/* -- 14. Docs outline ----------------------------------------------------- */
.docs { display: grid; gap: 0; border-top: 1px solid var(--rule); list-style: none; margin: 0; padding: 0; }
.doc-row {
  display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 1rem;
  padding: 0.8125rem 0; border-bottom: 1px solid var(--rule); align-items: baseline;
}
.doc-row span:last-child { font: 400 0.75rem/1 var(--mono); color: var(--faint); }

/* -- 15. Objections ------------------------------------------------------- */
.objections { display: grid; gap: 0; border-top: 1px solid var(--rule); list-style: none; margin: 0; padding: 0; }
.objection {
  padding: 1.125rem 0; border-bottom: 1px solid var(--rule);
  display: grid; gap: 0.3125rem;
}
.objection h3 { font-size: 1rem; }
.objection p { color: var(--muted); max-width: var(--measure); font-size: 0.9375rem; }

/* -- 16. Ask panel and form ---------------------------------------------- */
#ask { background: var(--surface); }
.qs { display: grid; gap: 0; border-top: 1px solid var(--rule-strong); margin-bottom: 2rem; list-style: none; padding: 0; }
.q {
  display: grid; grid-template-columns: 2.25rem minmax(0,1fr); gap: 0.75rem;
  padding: 0.9375rem 0; border-bottom: 1px solid var(--rule);
}
.q-n { font: 650 0.8125rem/1.6 var(--mono); color: var(--faint); }
.q p { font-size: 1.0625rem; }
.q.key p { font-weight: 650; }

form { display: grid; gap: 0.875rem; max-width: 34rem; }
.form-group { display: grid; gap: 0.3125rem; }
label { font-size: 0.875rem; color: var(--muted); }
input, textarea {
  font: 400 1rem/1.5 var(--sans); color: var(--ink); background: var(--ground);
  border: 1px solid var(--rule-strong); padding: 0.5rem 0.625rem; width: 100%;
}
textarea { min-height: 5.5rem; resize: vertical; }
.req { color: var(--ink); }
.form-note { font-size: 0.8125rem; color: var(--muted); max-width: 44ch; }

/* The honeypot is visually removed but deliberately NOT display:none --
   some bots skip hidden inputs. Its odd name and label are deliberate
   too: see the browser-autofill gotcha in contact-form-integration. */
.form-honeypot {
  position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden;
}

/* Status message. Hidden until the script gives it a state, so an empty
   box never occupies space. Red here is the one functional colour. */
.form-status { display: none; font-size: 0.875rem; padding: 0.5rem 0.625rem; border: 1px solid transparent; }
.form-status.is-visible { display: block; }
.form-status.is-error { color: var(--error); background: var(--error-bg); border-color: var(--error); }
.form-status.is-success { color: var(--ok); background: var(--sunk); border-color: var(--rule-strong); }
button[disabled] { opacity: 0.6; cursor: default; }

/* -- 17. Prose (Terms of Use) -------------------------------------------- */
.prose { max-width: 70ch; display: grid; gap: 1.25rem; }
.prose h2 { margin-top: 1.25rem; font-size: 1.1875rem; }
.prose h3 { margin-top: 0.5rem; }
.prose p, .prose li { color: var(--muted); }
.prose strong { color: var(--ink); font-weight: 650; }
.prose ul, .prose ol { margin: 0; padding-left: 1.25rem; display: grid; gap: 0.5rem; }
.prose a { text-decoration: underline; text-underline-offset: 2px; }
.company-block {
  border: 1px solid var(--rule-strong); background: var(--surface);
  padding: 1.125rem 1.25rem; font-size: 0.9375rem;
}
.company-block dl { margin: 0; }
.company-block dt {
  font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--faint); font-weight: 650;
}
.company-block dd { margin: 0 0 0.75rem; color: var(--ink); }
.company-block dd:last-child { margin-bottom: 0; }
.updated { font-size: 0.875rem; color: var(--muted); }
.legal-note {
  border-left: 2px solid var(--rule-strong); padding-left: 1rem;
  font-size: 0.9375rem; color: var(--muted);
}

/* -- 18. Breadcrumb ------------------------------------------------------ */
.crumbs { font-size: 0.875rem; color: var(--muted); padding-block: 1rem 0; }
.crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; gap: 0.5rem; flex-wrap: wrap; }
.crumbs a { text-decoration: underline; text-underline-offset: 2px; }
.crumbs li + li::before { content: "/"; color: var(--faint); margin-right: 0.5rem; }

/* -- 19. Footer --------------------------------------------------------- */
footer { font-size: 0.875rem; color: var(--muted); }
footer .shell { padding-block: 2rem 2.5rem; display: grid; gap: 1.25rem; }
.foot-cols { display: grid; gap: 1.25rem; }
@media (min-width: 48rem) { .foot-cols { grid-template-columns: 1.4fr 1fr 1fr; } }
footer h2 {
  font: 650 0.75rem/1 var(--sans); text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--ink); margin: 0 0 0.625rem;
}
footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.375rem; }
footer a:hover { color: var(--ink); }
.fineprint {
  border-top: 1px solid var(--rule); padding-top: 1.25rem;
  font-size: 0.8125rem; color: var(--faint); max-width: 70ch;
}

@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }