/* ==========================================================================
   Ledgerline — single-page marketing site
   --------------------------------------------------------------------------
   Palette  : warm paper + ink, with a stamp-green accent and an amber note.
   Type     : Fraunces (display) · Hanken Grotesk (text) · JetBrains Mono (figures)
   Spacing  : every margin / padding / gap value sits on a 4px grid.
   Radii    : exactly three — 4px (controls) · 12px (panels) · 999px (tags).
   ========================================================================== */

/* --- self-hosted type (latin subset, woff2 variable) --------------------- */
@font-face {
  font-family: 'Fraunces';
  font-style: normal;
  font-weight: 400 900;
  font-display: swap;
  src: url('ledgerline-static/fonts/fraunces.woff2') format('woff2');
}
@font-face {
  font-family: 'Hanken Grotesk';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('ledgerline-static/fonts/hanken-grotesk.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('ledgerline-static/fonts/jetbrains-mono.woff2') format('woff2');
}

:root {
  --paper: #F5F1E8;
  --paper-raised: #FCFAF4;
  --paper-deep: #EFEAD9;
  --ink: #16211C;
  --ink-2: #3E4C45;
  --ink-3: #5E6B64;
  --line: #DDD6C6;
  --line-2: #C6BCA6;
  --accent: #1C6B45;
  --accent-strong: #12492F;
  --accent-wash: #E3EDE5;
  --amber: #8A4B00;
  --amber-wash: #F3E7CF;
  --focus: #0B63CE;
  --on-ink: #F5F1E8;
  --on-ink-soft: #A8B5AC;
  --shadow: 0 1px 0 rgba(22, 33, 28, 0.06), 0 18px 40px -24px rgba(22, 33, 28, 0.45);
  --measure: 68ch;
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Hanken Grotesk', system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
  font-synthesis-weight: none;
}

h1, h2, h3 {
  font-family: 'Fraunces', 'Iowan Old Style', Georgia, serif;
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin: 0;
  text-wrap: balance;
}

h1 { font-size: clamp(2.1rem, 1.2rem + 4vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 1.1rem + 2.2vw, 2.4rem); }
h3 { font-size: 1.2rem; line-height: 1.25; }

p { margin: 0 0 16px; max-width: var(--measure); text-wrap: pretty; }
p:last-child { margin-bottom: 0; }

a { color: var(--accent-strong); text-decoration-thickness: 1px; text-underline-offset: 2px; }

img, svg { max-width: 100%; }
svg { display: block; }

/* --- layout -------------------------------------------------------------- */
.shell {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 80px 0; border-top: 1px solid var(--line); }
.section--flush { border-top: 0; }
.section--ink { background: var(--ink); color: var(--on-ink); border-top: 0; }
.section--ink p { color: var(--on-ink); }

.eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 16px;
}

.sect-mark {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.8125rem;
  color: var(--ink-3);
  margin: 0 0 8px;
}
.sect-mark--on-ink { color: var(--on-ink-soft); }

.lede { font-size: 1.1875rem; color: var(--ink-2); }
.section--ink .lede { color: var(--on-ink); }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.stack-sm > * + * { margin-top: 12px; }

/* --- focus --------------------------------------------------------------- */
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 10;
  padding: 12px 16px;
  background: var(--ink);
  color: var(--on-ink);
  font-weight: 600;
  text-decoration: none;
  border-radius: 4px;
}
.skip:focus { top: 16px; }

/* --- header -------------------------------------------------------------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.masthead__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 24px;
  padding: 16px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  text-decoration: none;
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}
.brand__glyph { width: 24px; height: 24px; flex: none; }

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  margin-left: auto;
}
.nav a:not(.btn) {
  color: var(--ink-2);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  padding: 8px 4px;
  border-bottom: 2px solid transparent;
}
.nav a:not(.btn):hover { color: var(--ink); border-bottom-color: var(--accent); }

/* --- buttons ------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
}
.btn--primary { background: var(--accent); color: #FFFFFF; }
.btn--primary:hover { background: var(--accent-strong); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn--ghost:hover { border-color: var(--ink); background: var(--paper-raised); }
.btn--ink { background: var(--ink); color: var(--on-ink); }
.btn--ink:hover { background: var(--accent-strong); }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* --- hero ---------------------------------------------------------------- */
.hero { padding: 72px 0 80px; }
.hero__grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: start; }
.hero h1 { margin-bottom: 20px; }
.hero__note {
  font-size: 0.9375rem;
  color: var(--ink-3);
  margin: 20px 0 0;
  max-width: 46ch;
}

/* --- product demo -------------------------------------------------------- */
.demo { margin: 0; }
.demo__grid { display: grid; grid-template-columns: 1fr; gap: 16px; }

.pane {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.pane__head {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: baseline;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--line);
}
.pane__title { font-weight: 700; font-size: 0.9375rem; }
.pane__meta {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.75rem;
  color: var(--ink-2);
}

.feed { list-style: none; margin: 0; padding: 4px 16px 8px; }
.feed__row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
}
.feed__row:last-child { border-bottom: 0; }
.feed__desc {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.8125rem;
  color: var(--ink-2);
  overflow-wrap: anywhere;
}
.feed__amt {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.amt--in { color: var(--accent-strong); }
.amt--out { color: var(--ink-3); }

.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: var(--accent-wash);
  color: var(--accent-strong);
}
.tag--amber { background: var(--amber-wash); color: var(--amber); }

.invoice { padding: 4px 16px 16px; }
.invoice__top { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--line); }
.invoice__no { font-family: 'JetBrains Mono', ui-monospace, monospace; font-weight: 700; font-size: 0.9375rem; }

.fields { margin: 0; padding: 4px 0; }
.fields__pair { display: grid; grid-template-columns: 116px 1fr; gap: 12px; padding: 8px 0; }
.fields__pair dt { color: var(--ink-3); font-size: 0.8125rem; }
.fields__pair dd { margin: 0; font-size: 0.875rem; }

.lines { list-style: none; margin: 8px 0 0; padding: 8px 0 0; border-top: 1px solid var(--line); }
.lines__row { display: grid; grid-template-columns: 1fr auto; gap: 12px; padding: 8px 0; }
.lines__amt { font-family: 'JetBrains Mono', ui-monospace, monospace; font-variant-numeric: tabular-nums; font-size: 0.875rem; }
.lines__total {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-top: 4px;
  padding-top: 12px;
  border-top: 1px solid var(--line-2);
  font-weight: 700;
}
.lines__total .lines__amt { font-size: 1rem; }

.stamp {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border: 2px solid var(--accent);
  border-radius: 4px;
  color: var(--accent-strong);
  background: var(--accent-wash);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transform: rotate(-3deg);
}

.demo__cap {
  font-size: 0.875rem;
  color: var(--ink-3);
  margin: 16px 0 0;
  max-width: 52ch;
}

/* --- steps --------------------------------------------------------------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.steps--offset { margin-top: 40px; }
.steps__item { border-top: 2px solid var(--ink); padding-top: 16px; }
.steps__no {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.8125rem;
  color: var(--accent);
  display: block;
  margin-bottom: 8px;
}
.steps__item h3 { margin-bottom: 8px; }
.steps__item p { color: var(--ink-2); font-size: 0.9375rem; }

/* --- features ------------------------------------------------------------ */
.features { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(248px, 1fr)); }
.features--single { grid-template-columns: 1fr; margin-top: 12px; }
.features--offset { margin-top: 40px; }
.features__item { border-top: 1px solid var(--line); padding: 24px 24px 24px 0; }
.features__item h3 { margin-bottom: 8px; }
.features__item p { color: var(--ink-2); font-size: 0.9375rem; margin: 0; }

/* --- checklist (dark band) ---------------------------------------------- */
.checklist { list-style: none; margin: 0; padding: 0; }
.checklist li { display: grid; grid-template-columns: 24px 1fr; gap: 12px; padding: 12px 0; border-top: 1px solid rgba(245, 241, 232, 0.22); }
.checklist svg { width: 20px; height: 20px; margin-top: 4px; }
.checklist span { color: var(--on-ink); }

/* --- pricing ------------------------------------------------------------- */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.plans--offset { margin-top: 40px; }
.plan {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line-2);
  border-radius: 12px;
  padding: 24px;
  background: var(--paper-raised);
}
.plan--lead { border: 2px solid var(--accent); box-shadow: var(--shadow); }
.plan__slot { display: flex; align-items: center; min-height: 28px; margin-bottom: 8px; }
.plan__flag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-strong);
  background: var(--accent-wash);
  padding: 4px 12px;
  border-radius: 999px;
}
.plan h3 { font-size: 1.35rem; }
.plan__price { font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 1.75rem; font-weight: 700; margin: 8px 0 4px; }
.plan__price span { font-size: 0.875rem; font-weight: 400; color: var(--ink-3); }
.plan__for { font-size: 0.875rem; color: var(--ink-3); margin: 0 0 16px; min-height: 2.8rem; }
.plan ul { list-style: none; margin: 0 0 24px; padding: 0; }
.plan li { padding: 8px 0; border-top: 1px solid var(--line); font-size: 0.9375rem; color: var(--ink-2); }
.plan .btn { width: 100%; margin-top: auto; }

/* --- faq ----------------------------------------------------------------- */
.faq { max-width: 780px; }
.faq--offset { margin-top: 32px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-of-type { border-bottom: 1px solid var(--line); }
.faq summary {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.0625rem;
}
.faq summary::after { content: "+"; color: var(--accent); font-family: 'JetBrains Mono', monospace; }
.faq details[open] summary::after { content: "–"; }
.faq details p { padding-bottom: 20px; color: var(--ink-2); margin: 0; }

/* --- closing ------------------------------------------------------------- */
.closing { text-align: center; }
.closing h2 { margin-bottom: 16px; }
.closing p { margin: 0 auto 24px; max-width: 56ch; }
.closing .btn-row { justify-content: center; }

/* --- footer -------------------------------------------------------------- */
.footer { border-top: 1px solid var(--line); padding: 48px 0 56px; }
.footer__grid { display: flex; flex-wrap: wrap; gap: 32px; justify-content: space-between; }
.footer__brand p { color: var(--ink-3); font-size: 0.9375rem; max-width: 40ch; margin: 12px 0 0; }
.footer__nav { display: flex; flex-wrap: wrap; gap: 8px 24px; align-content: start; }
.footer__nav a { color: var(--ink-2); text-decoration: none; font-size: 0.9375rem; padding: 4px 0; }
.footer__nav a:hover { color: var(--ink); text-decoration: underline; }
.footer__legal { margin-top: 32px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 0.8125rem; color: var(--ink-3); }

/* --- motion -------------------------------------------------------------- */
a, .btn, summary { transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease; }

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

/* --- responsive ---------------------------------------------------------- */
@media (max-width: 960px) {
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .split { grid-template-columns: 1fr; gap: 32px; }
  .steps { grid-template-columns: 1fr; gap: 24px; }
  .plans { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .section { padding: 64px 0; }
  .hero { padding: 48px 0 64px; }
  .features__item { padding: 20px 0; }
  .masthead__inner { padding: 12px 0; }
  .nav { gap: 4px 16px; }
}

@media (max-width: 560px) {
  .shell { padding: 0 20px; }
  .fields__pair { grid-template-columns: 1fr; gap: 4px; }
  .btn-row .btn { width: 100%; }
  .btn-row { gap: 8px; }
}