/* Invoice Ledger — one local stylesheet, no imports, no web fonts.
   System fonts only: the page makes no request it does not have to. */

:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --fg: #111827;
  --muted: #5b6472;
  --rule: #e5e7eb;
  --accent: #0f766e;
  --accent-2: #14b8a6;
  --accent-soft: #e6f6f4;
  --ink: #0b1220;
  --warn: #8a4b00;
  --warn-bg: #fff7e8;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 12px 32px -12px rgba(16, 24, 40, .18);
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, "Noto Sans", sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

.wrap { max-width: 72rem; margin: 0 auto; padding: 0 1.25rem; }

a { color: var(--accent); text-underline-offset: 3px; }

/* ---------- top navigation ---------- */
.topnav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(11, 18, 32, .88);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.navrow { display: flex; align-items: center; justify-content: space-between; height: 3.6rem; }
.brandlink {
  display: flex; align-items: center; gap: .6rem;
  color: #fff; font-weight: 700; letter-spacing: .01em; text-decoration: none;
}
.logo { width: 28px; height: 28px; color: var(--accent-2); }
.navlinks { display: flex; align-items: center; gap: 1.4rem; }
.navlinks a { color: #cbd5e1; text-decoration: none; font-size: .93rem; }
.navlinks a:hover { color: #fff; }
.navlinks a.navbuy {
  color: var(--ink); background: var(--accent-2); font-weight: 700;
  padding: .45rem .9rem; border-radius: 999px;
}
.navlinks a.navbuy:hover { background: #5eead4; }

/* ---------- hero ---------- */
.hero {
  color: #e5e7eb;
  background:
    radial-gradient(60rem 30rem at 85% -10%, rgba(20, 184, 166, .28), transparent 60%),
    radial-gradient(40rem 24rem at -10% 110%, rgba(56, 189, 248, .16), transparent 60%),
    linear-gradient(180deg, #0b1220 0%, #101b2d 100%);
  padding: 4.5rem 0 5rem;
  margin-bottom: 3rem;
}
.herogrid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 3rem; align-items: center; }
.eyebrow {
  display: inline-block; margin: 0 0 1rem;
  font-size: .78rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: #5eead4; background: rgba(20, 184, 166, .12);
  border: 1px solid rgba(94, 234, 212, .25); border-radius: 999px; padding: .3rem .8rem;
}
.hero h1 {
  color: #fff; font-size: clamp(1.9rem, 3.4vw, 2.8rem); line-height: 1.12;
  letter-spacing: -.02em; margin: 0 0 1.1rem;
}
.hero .lede { color: #b6c2d1; font-size: 1.12rem; margin: 0 0 1.8rem; max-width: 34rem; }
.ctas { display: flex; flex-wrap: wrap; gap: .8rem; margin-bottom: 1rem; }
.btn {
  display: inline-block; padding: .85rem 1.3rem; border-radius: 10px;
  font-weight: 700; text-decoration: none; transition: transform .12s ease, background .12s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn.primary { background: var(--accent-2); color: var(--ink); box-shadow: 0 10px 30px -10px rgba(20, 184, 166, .7); }
.btn.primary:hover { background: #5eead4; }
.btn.ghost { color: #e5e7eb; border: 1px solid rgba(255, 255, 255, .22); }
.btn.ghost:hover { background: rgba(255, 255, 255, .06); }
.fine { font-size: .86rem; color: #8b98a9; margin: 0; }
.fine a { color: #9fe7dc; }

/* ledger card visual */
.ledgercard {
  margin: 0; background: #0f1a2b; border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--radius); box-shadow: 0 30px 60px -20px rgba(0, 0, 0, .6);
  overflow: hidden;
}
.cardbar { display: flex; align-items: center; gap: .4rem; padding: .7rem 1rem; background: #0b1424; border-bottom: 1px solid rgba(255, 255, 255, .06); }
.cardbar span { width: 10px; height: 10px; border-radius: 50%; background: #334155; }
.cardbar span:nth-child(1) { background: #f87171; }
.cardbar span:nth-child(2) { background: #fbbf24; }
.cardbar span:nth-child(3) { background: #34d399; }
.cardbar b { margin-left: .6rem; font-size: .8rem; font-weight: 600; color: #94a3b8; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.ledgercard table { width: 100%; border-collapse: collapse; font-size: .86rem; }
.ledgercard th, .ledgercard td { text-align: left; padding: .7rem 1rem; border-bottom: 1px solid rgba(255, 255, 255, .06); white-space: nowrap; }
.ledgercard th { color: #7c8aa0; font-weight: 600; font-size: .74rem; text-transform: uppercase; letter-spacing: .08em; }
.ledgercard td { color: #dbe4ee; }
.ledgercard td:nth-child(3) { font-variant-numeric: tabular-nums; }
.ledgercard tbody tr:last-child td { color: #7c8aa0; border-bottom: 0; }
.ledgercard i { font-style: normal; font-size: .74rem; font-weight: 700; padding: .18rem .55rem; border-radius: 999px; }
.ledgercard i.ok { color: #6ee7b7; background: rgba(16, 185, 129, .14); }
.ledgercard i.dup { color: #fcd34d; background: rgba(245, 158, 11, .14); }
.ledgercard figcaption { font-size: .78rem; color: #7c8aa0; padding: .75rem 1rem 1rem; }
.ledgercard figcaption code { background: rgba(255, 255, 255, .06); color: #a5b4c8; }

/* ---------- content ---------- */
main { max-width: 48rem; margin: 0 auto; }
section { margin: 0 0 3.5rem; }

h2 {
  font-size: 1.6rem; line-height: 1.2; letter-spacing: -.015em;
  margin: 0 0 1rem; color: var(--ink);
}
h3 { font-size: 1.12rem; margin: 2rem 0 .5rem; color: var(--ink); }
p, ul, ol, dl { margin: 0 0 1rem; }
ul, ol { padding-left: 1.3rem; }
li { margin-bottom: .45rem; }

/* three "No AI / No API key / No third party" cards */
ul.cards {
  list-style: none; padding: 0; margin: 1.5rem 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
}
ul.cards li {
  margin: 0; background: var(--surface); border: 1px solid var(--rule);
  border-radius: var(--radius); padding: 1.1rem 1.15rem; box-shadow: var(--shadow);
  font-size: .95rem; color: var(--muted);
}
ul.cards li strong { display: block; color: var(--ink); font-size: 1.05rem; margin-bottom: .3rem; }
ul.cards li strong::before {
  content: "✓"; display: inline-grid; place-items: center;
  width: 1.5rem; height: 1.5rem; margin-right: .5rem; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent); font-size: .85rem;
}

img {
  display: block; width: 100%; height: auto;
  border: 1px solid var(--rule); border-radius: var(--radius);
  background: var(--surface); box-shadow: var(--shadow);
  margin: 1rem 0 .5rem;
}
.caption { font-size: .85rem; color: var(--muted); margin-top: 0; }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: .86em; background: #eef1f4; padding: .12em .4em; border-radius: 6px;
}

.disclosure {
  font-size: .95rem; color: var(--muted);
  background: var(--surface); border: 1px solid var(--rule);
  border-left: 4px solid var(--accent-2); border-radius: 10px; padding: .9rem 1rem;
}

#limits ul { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 1.2rem 1.4rem 1.2rem 2.4rem; box-shadow: var(--shadow); }

/* price card */
.pricecard {
  background: var(--surface); border: 2px solid var(--accent-2);
  border-radius: 20px; padding: 2rem 2rem 1.4rem; box-shadow: 0 30px 60px -30px rgba(15, 118, 110, .45);
  position: relative;
}
.pricecard::before {
  content: "Full pack"; position: absolute; top: -.8rem; left: 2rem;
  background: var(--accent-2); color: var(--ink); font-weight: 800; font-size: .75rem;
  letter-spacing: .1em; text-transform: uppercase; padding: .25rem .7rem; border-radius: 999px;
}
.price { color: var(--muted); margin-bottom: 1.2rem; }
.price span { font-size: 3rem; font-weight: 800; color: var(--ink); letter-spacing: -.03em; margin-right: .4rem; }
a.buy {
  display: inline-block; padding: .95rem 1.5rem; border-radius: 10px;
  background: var(--accent); color: #fff; font-weight: 700; text-decoration: none;
  box-shadow: 0 10px 24px -10px rgba(15, 118, 110, .8);
}
a.buy:hover { background: #115e59; }
.warning { background: var(--warn-bg); color: var(--warn); border-radius: 10px; padding: .9rem 1rem; font-size: .95rem; }

/* FAQ */
dl { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: .4rem 1.4rem 1rem; box-shadow: var(--shadow); }
dt { font-weight: 700; color: var(--ink); margin-top: 1.1rem; }
dd { margin: .25rem 0 0; color: var(--muted); }

/* ---------- legal pages keep the old simple header ---------- */
body > header:not(.hero) { max-width: 48rem; margin: 0 auto; padding: 2.5rem 1.25rem 1.25rem; border-bottom: 1px solid var(--rule); }
body > header:not(.hero) h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 .6rem; color: var(--ink); }
.brand { margin: 0 0 .4rem; font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.brand a { text-decoration: none; }
body > main { padding: 2rem 1.25rem 0; }
.lede { color: var(--muted); }

/* ---------- footer ---------- */
footer {
  margin-top: 4rem; padding: 2rem 0 2.5rem;
  background: #0b1220; color: #8b98a9; font-size: .9rem;
}
footer a { color: #cbd5e1; }
body > footer:not(.sitefoot) { padding: 2rem 1.25rem; }

/* ---------- small screens ---------- */
@media (max-width: 860px) {
  .herogrid { grid-template-columns: 1fr; gap: 2.2rem; }
  .hero { padding: 3rem 0 3.5rem; }
  ul.cards { grid-template-columns: 1fr; }
  .navlinks a:not(.navbuy) { display: none; }
  .ledgercard th:nth-child(2), .ledgercard td:nth-child(2) { display: none; }
  .pricecard { padding: 1.6rem 1.2rem 1rem; }
}

@media print {
  .topnav { display: none; }
  .hero { background: none; color: #000; }
  .hero h1, .hero .lede { color: #000; }
  a.buy, .btn { border: 1px solid #000; }
}

@media (max-width: 520px) {
  .ledgercard th, .ledgercard td { padding: .6rem .65rem; }
  .ledgercard td:first-child { white-space: normal; }
  .ledgercard table { font-size: .8rem; }
}
section, h2, h3 { scroll-margin-top: 4.5rem; }

/* click-to-enlarge without JavaScript (:target lightbox) */
a.zoomable { position: relative; display: block; cursor: zoom-in; }
a.zoomable img { transition: transform .15s ease, box-shadow .15s ease; }
a.zoomable:hover img { transform: translateY(-2px); box-shadow: 0 24px 48px -16px rgba(16, 24, 40, .35); }
.zoomhint {
  position: absolute; right: .8rem; bottom: 1.2rem;
  background: rgba(11, 18, 32, .85); color: #fff; font-size: .8rem; font-weight: 600;
  padding: .35rem .7rem; border-radius: 999px; pointer-events: none;
}
.lightbox {
  display: none; position: fixed; inset: 0; z-index: 50;
  background: rgba(5, 10, 20, .92); cursor: zoom-out;
  align-items: center; justify-content: center; padding: 2rem;
}
.lightbox:target { display: flex; }
.lightbox img {
  max-width: 96vw; max-height: 88vh; width: auto; height: auto; margin: 0;
  border-radius: 10px; box-shadow: 0 30px 80px rgba(0, 0, 0, .6);
}
.lbbar { position: absolute; top: 1rem; left: 0; right: 0; text-align: center; }
.lbbar span { color: #e5e7eb; background: rgba(255, 255, 255, .1); padding: .35rem .8rem; border-radius: 999px; font-size: .85rem; }