/* ============================================================================
   Leadline Data — shared stylesheet
   Aesthetic: precision-instrument / nautical-chart. Chart-paper ground, hairline
   survey grid, ink-navy Spectral serif, IBM Plex Mono instrument readouts, one
   buoy red-orange signal accent. No frameworks, no build step.
   Brand name lives in the HTML as the literal token "Leadline Data" (see BRAND.md).
   ============================================================================ */

:root {
  /* ---- chart paper & ink ---- */
  --paper:      #f3f0e8;   /* warm chart-paper ground */
  --paper-2:    #f8f6f0;   /* raised panel / card face */
  --paper-edge: #ece8dd;   /* faint fill for insets */
  --ink:        #14283f;   /* ink-navy — primary type */
  --ink-2:      #3d5068;   /* secondary type */
  --ink-3:      #6c7c90;   /* tertiary / captions */
  --signal:     #cf4426;   /* buoy red-orange — the ONE accent */
  --signal-ink: #a8341b;   /* darker signal for text on paper */
  --hair:       rgba(20, 40, 63, 0.14);  /* hairline rules */
  --hair-soft:  rgba(20, 40, 63, 0.08);
  --grid:       rgba(20, 40, 63, 0.045);  /* survey grid lines */
  --grid-major: rgba(20, 40, 63, 0.075);

  /* verdict signals (roast) */
  --green: #2f7d54;
  --amber: #b9761b;
  --red:   #b23a24;

  --serif: 'Spectral', Georgia, 'Times New Roman', serif;
  --mono:  'IBM Plex Mono', 'SFMono-Regular', ui-monospace, 'Courier New', monospace;

  --wrap: 1080px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--serif);
  font-weight: 400;
  color: var(--ink);
  background-color: var(--paper);
  line-height: 1.62;
  font-size: 17px;
  overflow-x: hidden;
  /* fine survey grid + a couple of major lines, printed on chart paper */
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    linear-gradient(var(--grid-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-major) 1px, transparent 1px);
  background-size: 28px 28px, 28px 28px, 140px 140px, 140px 140px;
  background-position: -1px -1px, -1px -1px, -1px -1px, -1px -1px;
}

/* faint vignette so the grid fades at the page edges like a mounted chart */
body::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(120% 80% at 50% 0%, transparent 55%, rgba(20,40,63,0.05) 100%);
}

.wrap { position: relative; z-index: 1; max-width: var(--wrap); margin: 0 auto; padding: 0 32px; }

/* ---------------------------------------------------------------- type */
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 500; letter-spacing: -0.01em; color: var(--ink); }
a { color: var(--signal-ink); text-decoration: none; }

.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.tnum { font-variant-numeric: tabular-nums; }

/* an "instrument label" — small mono caps used for kickers, tags, field names */
.readout {
  font-family: var(--mono); font-size: 0.68rem; font-weight: 500;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--ink-3);
}
.readout .sig { color: var(--signal); }

/* ---------------------------------------------------------------- masthead */
.masthead {
  display: flex; align-items: center; justify-content: space-between;
  padding: 26px 0 22px; border-bottom: 1px solid var(--hair);
}
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--ink); }
.brand .mark { width: 22px; height: 22px; flex: none; display: block; }
.brand .name { font-family: var(--serif); font-weight: 600; font-size: 1.12rem; letter-spacing: 0.005em; }
.brand .name b { font-weight: 600; }
.brand .name .data {
  font-family: var(--mono); font-weight: 500; font-size: 0.7rem; letter-spacing: 0.26em;
  text-transform: uppercase; color: var(--ink-3); margin-left: 2px; vertical-align: 2px;
}
nav.site { display: flex; gap: 26px; align-items: center; }
nav.site a {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-2); position: relative; padding-bottom: 3px;
}
nav.site a::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 1px;
  background: var(--signal); transition: width 0.28s ease;
}
nav.site a:hover { color: var(--ink); }
nav.site a:hover::after { width: 100%; }

/* ---------------------------------------------------------------- hero */
.hero { padding: 92px 0 78px; border-bottom: 1px solid var(--hair); position: relative; }
.hero .kicker { margin-bottom: 26px; display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.hero .kicker .coord { color: var(--ink-3); }
.hero h1 {
  font-weight: 400; font-size: clamp(2.4rem, 5.6vw, 4.05rem); line-height: 1.06;
  letter-spacing: -0.02em; max-width: 18ch;
}
.hero h1 .em { font-weight: 600; color: var(--signal-ink); }
.hero .sub { margin-top: 28px; max-width: 58ch; color: var(--ink-2); font-size: 1.12rem; }
.hero .cta-row { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }

/* staggered load-in */
.rise { opacity: 0; transform: translateY(16px); animation: rise 0.85s cubic-bezier(.2,.7,.2,1) forwards; }
.rise.d1 { animation-delay: .05s; } .rise.d2 { animation-delay: .16s; }
.rise.d3 { animation-delay: .28s; } .rise.d4 { animation-delay: .4s; } .rise.d5 { animation-delay: .52s; }
@keyframes rise { to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .rise { animation: none; opacity: 1; transform: none; } }

/* ---------------------------------------------------------------- buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px; font-family: var(--mono);
  font-size: 0.78rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 14px 26px; border: 1px solid transparent; cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.btn:active { transform: translateY(1px); }
.btn-signal { background: var(--signal); color: var(--paper); border-color: var(--signal); }
.btn-signal:hover { background: var(--signal-ink); border-color: var(--signal-ink); color: #fff; }
.btn-signal .arw { transition: transform 0.2s ease; }
.btn-signal:hover .arw { transform: translateX(3px); }
.btn-outline { background: transparent; color: var(--ink); border-color: var(--hair); }
.btn-outline:hover { border-color: var(--ink); }

/* ---------------------------------------------------------------- sections */
section { padding: 78px 0; border-bottom: 1px solid var(--hair); }
.sec-head { margin-bottom: 48px; }
.sec-head .readout { display: block; margin-bottom: 14px; }
.sec-head h2 { font-size: clamp(1.7rem, 3.2vw, 2.3rem); font-weight: 400; }
.sec-head .lede { margin-top: 14px; max-width: 64ch; color: var(--ink-2); font-size: 1.05rem; }

/* ---------------------------------------------------------------- dossier card w/ registration corners */
.panel {
  position: relative; background: var(--paper-2); border: 1px solid var(--hair);
  padding: 32px 30px;
}
.panel.reg::before, .panel.reg::after,
.panel.reg > .corner-tr, .panel.reg > .corner-br {
  content: ""; position: absolute; width: 9px; height: 9px; pointer-events: none;
  border-color: var(--ink-3); border-style: solid; opacity: 0.5;
}
.panel.reg::before { top: -1px; left: -1px; border-width: 1px 0 0 1px; }
.panel.reg::after  { bottom: -1px; left: -1px; border-width: 0 0 1px 1px; }
.panel.reg > .corner-tr { top: -1px; right: -1px; border-width: 1px 1px 0 0; }
.panel.reg > .corner-br { bottom: -1px; right: -1px; border-width: 0 1px 1px 0; }

/* ---------------------------------------------------------------- product index (home) */
.register { border-top: 1px solid var(--ink); }
.entry {
  display: grid; grid-template-columns: 3.2rem 1fr auto; gap: 28px; align-items: start;
  padding: 30px 4px; border-bottom: 1px solid var(--hair); color: var(--ink);
  transition: background 0.22s ease;
}
.entry:hover { background: rgba(20,40,63,0.025); }
.entry .idx { font-family: var(--mono); font-size: 0.82rem; color: var(--signal); padding-top: 6px; letter-spacing: 0.05em; }
.entry .body h3 { font-size: 1.42rem; font-weight: 500; display: inline-flex; align-items: baseline; gap: 12px; }
.entry .body h3 .arw { color: var(--signal); font-family: var(--mono); font-size: 0.9rem; opacity: 0; transform: translateX(-4px); transition: 0.22s ease; }
.entry:hover .body h3 .arw { opacity: 1; transform: none; }
.entry .body p { color: var(--ink-2); font-size: 0.98rem; margin-top: 8px; max-width: 62ch; }
.entry .body .status { margin-top: 12px; }
.entry .meta { text-align: right; padding-top: 4px; min-width: 150px; }
.entry .meta .price { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 1.5rem; color: var(--ink); font-weight: 500; }
.entry .meta .unit { display: block; font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); margin-top: 6px; }

/* status chip */
.chip {
  display: inline-flex; align-items: center; gap: 7px; font-family: var(--mono);
  font-size: 0.62rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-2);
  border: 1px solid var(--hair); padding: 4px 10px;
}
.chip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ink-3); }
.chip.live { color: var(--signal-ink); border-color: rgba(207,68,38,0.35); }
.chip.live .dot { background: var(--signal); box-shadow: 0 0 0 3px rgba(207,68,38,0.14); }
.chip.soon .dot { background: var(--amber); }

/* ---------------------------------------------------------------- feature grid */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(238px, 1fr)); gap: 1px; background: var(--hair); border: 1px solid var(--hair); }
.grid-3.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-3 .cell { background: var(--paper); padding: 30px 26px; }
.grid-3 .cell .n { font-family: var(--mono); font-size: 0.7rem; color: var(--signal); letter-spacing: 0.1em; }
.grid-3 .cell h3 { font-size: 1.16rem; font-weight: 500; margin: 12px 0 8px; }
.grid-3 .cell p { color: var(--ink-2); font-size: 0.94rem; }

/* ---------------------------------------------------------------- pricing tiers */
.tiers { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.tier { position: relative; background: var(--paper-2); border: 1px solid var(--hair); padding: 32px 28px; }
.tier.mark { border-color: var(--signal); }
.tier.mark .flag {
  position: absolute; top: -1px; right: -1px; font-family: var(--mono); font-size: 0.58rem;
  letter-spacing: 0.16em; text-transform: uppercase; background: var(--signal); color: var(--paper);
  padding: 4px 12px;
}
.tier .size { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-3); }
.tier .amount { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 2.6rem; font-weight: 500; color: var(--ink); margin: 16px 0 4px; line-height: 1; }
.tier .band { font-family: var(--mono); font-size: 0.72rem; color: var(--signal-ink); letter-spacing: 0.04em; }
.tier .desc { color: var(--ink-2); font-size: 0.93rem; margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--hair); }

/* ---------------------------------------------------------------- spec table */
.spec { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.spec th, .spec td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--hair); vertical-align: top; }
.spec thead th { font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); font-weight: 500; border-bottom-color: var(--ink); }
.spec td.mono, .spec th.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.spec td .credits { color: var(--signal-ink); }
.spec tbody tr:hover, .spec tbody tr:hover { background: rgba(20,40,63,0.02); }
.table-scroll { overflow-x: auto; }

/* ---------------------------------------------------------------- pills / audience */
.pills { display: flex; flex-wrap: wrap; gap: 10px; }
.pill { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.04em; color: var(--ink-2); border: 1px solid var(--hair); padding: 7px 15px; }
.pill b { color: var(--signal-ink); font-weight: 500; }

/* ---------------------------------------------------------------- steps */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; counter-reset: s; }
.step { position: relative; padding: 28px 26px; border: 1px solid var(--hair); background: var(--paper-2); }
.step::before {
  counter-increment: s; content: counter(s, decimal-leading-zero);
  font-family: var(--mono); font-size: 0.78rem; color: var(--signal); letter-spacing: 0.08em;
  display: block; margin-bottom: 14px;
}
.step h3 { font-size: 1.1rem; font-weight: 500; margin-bottom: 8px; }
.step p { color: var(--ink-2); font-size: 0.93rem; }

/* ---------------------------------------------------------------- callout / buy block */
.callout {
  position: relative; background: var(--paper-2); border: 1px solid var(--signal);
  padding: 48px 42px; text-align: center;
}
.callout .amount { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 3.2rem; font-weight: 500; color: var(--ink); line-height: 1; }
.callout .amount small { display: block; font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); margin-top: 12px; }
.callout h2 { font-weight: 400; font-size: 1.9rem; margin-bottom: 10px; }
.callout p { color: var(--ink-2); max-width: 50ch; margin: 0 auto 28px; }

/* ---------------------------------------------------------------- FAQ */
.faq details { border-bottom: 1px solid var(--hair); padding: 22px 2px; }
.faq summary {
  list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 20px;
  font-family: var(--serif); font-size: 1.14rem; font-weight: 500; color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary .pm { font-family: var(--mono); color: var(--signal); font-size: 1.2rem; transition: transform 0.22s ease; }
.faq details[open] summary .pm { transform: rotate(45deg); }
.faq details p { color: var(--ink-2); margin-top: 14px; max-width: 72ch; font-size: 0.98rem; }

/* ---------------------------------------------------------------- mail line */
.mailline {
  display: inline-flex; align-items: baseline; gap: 2px; font-family: var(--serif); font-size: 1.6rem;
  color: var(--ink); border-bottom: 1px solid var(--signal); padding-bottom: 4px; transition: color 0.2s ease;
}
.mailline:hover { color: var(--signal-ink); }
.inline-link { color: var(--signal-ink); border-bottom: 1px solid rgba(207,68,38,0.35); }
.inline-link:hover { border-bottom-color: var(--signal); }

/* ---------------------------------------------------------------- note / disclaimer */
.note { border: 1px solid var(--hair); background: var(--paper-edge); padding: 20px 22px; color: var(--ink-2); font-size: 0.9rem; max-width: 74ch; }
.note b { color: var(--ink); font-weight: 600; }

/* ---------------------------------------------------------------- footer */
footer.site {
  padding: 46px 0 64px; color: var(--ink-3); font-family: var(--mono); font-size: 0.72rem;
  display: flex; flex-wrap: wrap; gap: 14px 40px; justify-content: space-between; align-items: flex-start;
  letter-spacing: 0.02em; line-height: 1.7;
}
footer.site a { color: var(--ink-2); border-bottom: 1px solid var(--hair); }
footer.site a:hover { color: var(--signal-ink); border-bottom-color: var(--signal); }
footer.site .legal { max-width: 40ch; }
footer.site .fnav { display: flex; flex-wrap: wrap; gap: 8px 20px; }

/* ---------------------------------------------------------------- utilities */
.center { text-align: center; }
.stack-sm > * + * { margin-top: 14px; }
.mt-s { margin-top: 20px; } .mt-m { margin-top: 32px; } .mt-l { margin-top: 48px; }

/* ---------------------------------------------------------------- responsive */
@media (max-width: 720px) {
  body { font-size: 16px; }
  .wrap { padding: 0 20px; }
  nav.site { gap: 16px; }
  nav.site a { font-size: 0.66rem; letter-spacing: 0.1em; }
  .hero { padding: 60px 0 54px; }
  section { padding: 56px 0; }
  .grid-3.cols-3 { grid-template-columns: 1fr; }
  .entry { grid-template-columns: 1fr; gap: 12px; }
  .entry .idx { padding-top: 0; }
  .entry .meta { text-align: left; }
  .callout { padding: 34px 22px; }
  .brand .name .data { display: inline; }
}
@media (max-width: 460px) {
  nav.site .hide-xs { display: none; }
}