/* HarvestBot — shared ledger stylesheet (landing + /verify).
   Bookkeeper's-ledger design tokens. Every colour and face below is a var(--…). */
/* :root tokens are inlined in each page head, so every page carries the contract itself. */
:root { --row: 32px; --gut: clamp(16px, 5vw, 72px); --ease: cubic-bezier(.16, 1, .3, 1); color-scheme: light; }

*, *::before, *::after { box-sizing: border-box; }
html { overflow-x: clip; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scrollbar-color: var(--rule) var(--bg); }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 400 17px/1.6 var(--font-body);
  font-variant-numeric: tabular-nums;
  /* the columnar pad: fine green row ruling + the red double margin rule */
  background-image:
    linear-gradient(to right, transparent 26px, var(--margin) 26px, var(--margin) 27.5px, transparent 27.5px,
                    transparent 31px, var(--margin) 31px, var(--margin) 32.5px, transparent 32.5px),
    repeating-linear-gradient(to bottom, transparent 0 calc(var(--row) - 1px), color-mix(in srgb, var(--rule) 55%, transparent) calc(var(--row) - 1px) var(--row));
  background-attachment: scroll;
}
::selection { background: var(--wall-fill); color: var(--ink); }
::-webkit-scrollbar { width: 12px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--rule); border: 3px solid var(--bg); border-radius: 8px; }
:focus-visible { outline: 2.5px solid var(--link); outline-offset: 3px; border-radius: 2px; }
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 3px; transition: color .18s var(--ease), text-underline-offset .18s var(--ease), text-decoration-thickness .18s var(--ease); }
a:hover { text-underline-offset: 5px; text-decoration-thickness: 2px; }
img, svg { max-width: 100%; }
code, .mono { font-family: var(--font-data); font-size: .88em; overflow-wrap: anywhere; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--bg); padding: 8px 12px; z-index: 20; }
.skip:focus { left: 48px; }

/* ---------- nav ---------- */
.nav { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px var(--gut) 14px calc(var(--gut) + 24px); background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: saturate(1.2) blur(6px); border-bottom: 1px solid var(--rule); }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 500 22px/1 var(--font-display); letter-spacing: -.01em; }
.brand img { width: 30px; height: 30px; transition: transform .3s var(--ease); }
.brand:hover img { transform: rotate(-6deg) scale(1.06); }
.nav-links { display: flex; align-items: center; gap: 22px; font-size: 14.5px; }
.nav-links a:not(.btn) { color: var(--ink); text-decoration: none; background: linear-gradient(var(--after), var(--after)) 0 58% / 0 2px no-repeat; transition: background-size .28s var(--ease), color .18s; }
.nav-links a:not(.btn):hover { background-size: 100% 2px; color: var(--after); }
@media (max-width: 860px) { .nav-links a.hide-sm { display: none !important; } }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 12px 18px; min-height: 46px; border: 1.5px solid var(--ink);
  color: var(--ink); background: var(--bg); font: 600 15px/1.2 var(--font-body); text-decoration: none; cursor: pointer;
  transition: transform .18s var(--ease), box-shadow .22s var(--ease), background .18s, color .18s; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 18px -12px rgba(28,38,32,.55); text-underline-offset: 3px; }
.btn:active { transform: translateY(1px) scale(.99); box-shadow: none; }
.btn.ink { background: var(--ink); color: var(--bg); }
.btn.ink:hover { background: #0F1712; }
.btn.sm { padding: 8px 12px; min-height: 36px; font-size: 13.5px; }
.btn svg { width: 16px; height: 16px; flex: none; transition: transform .2s var(--ease); }
.btn:hover svg.arr { transform: translateX(3px); }
.btn[disabled] { opacity: .55; cursor: progress; transform: none; box-shadow: none; }

/* ---------- pad labels (the printed column headings of the analysis pad) ---------- */
.label { font: 600 12px/1.3 var(--font-body); letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.chip { display: inline-block; font: 600 11.5px/1 var(--font-body); letter-spacing: .12em; text-transform: uppercase;
  padding: 4px 6px 3px; border: 1px solid currentColor; border-radius: 2px; vertical-align: .15em; white-space: nowrap; }
.chip.mock { color: var(--mock); }
.chip.real { color: var(--after); }
.chip.prim { color: var(--ink); font-family: var(--font-data); letter-spacing: 0; text-transform: none; font-weight: 500; font-size: 12px; }

/* ---------- the ledger table ---------- */
.ledger { width: 100%; border-collapse: collapse; font: 400 14.5px/1 var(--font-data); font-variant-numeric: tabular-nums; }
.ledger th { font: 600 11px/1.2 var(--font-body); letter-spacing: .14em; text-transform: uppercase; color: var(--muted);
  text-align: right; padding: 8px 10px; border-bottom: 1.5px solid var(--ink); white-space: nowrap; }
.ledger td { padding: 0 10px; height: var(--row); text-align: right; border-bottom: 1px solid var(--rule); color: var(--before); white-space: nowrap; }
.ledger th:first-child, .ledger td:first-child { text-align: left; }
.ledger tr:nth-child(8n) td { border-bottom-color: color-mix(in srgb, var(--muted) 40%, transparent); }
.ledger tr.hit td { color: var(--ink); position: relative; }
.ledger tr.hit td::after { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 2px; margin-top: -1px;
  background: var(--after); transform: scaleX(0); transform-origin: left center; animation: strike .42s var(--ease) forwards; animation-delay: var(--d, 0s); }
.ledger tr.hit td:first-child::after { left: -6px; }
.ledger tr.hit td:last-child::after { right: -6px; }
@keyframes strike { to { transform: scaleX(1); } }
.ledger tr.total td { height: auto; padding: 12px 10px 10px; border-bottom: 3.5px double var(--ink); color: var(--after);
  font: italic 500 30px/1 var(--font-display); letter-spacing: -.01em; }
.ledger tr.total td:first-child { font: 600 11px/1.2 var(--font-body); font-style: normal; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); vertical-align: bottom; }
.ledger .part { font: 500 11px var(--font-body); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-left: 6px; }

/* ---------- the amber hold stamp ---------- */
.stamp { display: inline-block; transform: rotate(-6deg); border: 3px solid var(--wall); outline: 1px solid var(--wall); outline-offset: 3px;
  background: var(--wall-fill); color: var(--ink); padding: 9px 14px 8px; font: 700 13px/1.25 var(--font-body);
  letter-spacing: .14em; text-transform: uppercase; text-align: center; box-shadow: 0 6px 14px -10px rgba(122,74,0,.6); }
.stamp b { display: block; font: 700 22px/1.1 var(--font-body); letter-spacing: .08em; }
.stamp.land { animation: land .5s cubic-bezier(.2,1.4,.4,1) both; animation-delay: var(--d, 0s); }
@keyframes land { from { transform: rotate(-6deg) scale(1.9); opacity: 0; } 60% { opacity: 1; } to { transform: rotate(-6deg) scale(1); opacity: 1; } }

/* ---------- live dot ---------- */
.live { display: inline-flex; align-items: center; gap: 8px; font: 500 13px/1.4 var(--font-data); color: var(--muted); }
.live i { width: 8px; height: 8px; border-radius: 50%; background: var(--before); flex: none; }
.live[data-state="live"] i { background: var(--after); box-shadow: 0 0 0 0 rgba(30,122,70,.5); animation: pulse 2.2s ease-out infinite; }
.live[data-state="fallback"] i { background: var(--wall); }
@keyframes pulse { 70% { box-shadow: 0 0 0 7px rgba(30,122,70,0); } 100% { box-shadow: 0 0 0 0 rgba(30,122,70,0); } }

/* ---------- sections ---------- */
.sec { padding: 96px var(--gut) 96px calc(var(--gut) + 24px); max-width: 1400px; margin: 0 auto; }
.sec-h { font: 400 clamp(34px, 4.2vw, 58px)/1.04 var(--font-display); letter-spacing: -.02em; margin: 12px 0 18px; max-width: 18em; text-wrap: balance; }
.sec-h em { font-style: italic; }
.lede { max-width: 64ch; color: var(--ink); font-size: 18px; }
.muted { color: var(--muted); }
.hr { border: 0; border-top: 1.5px solid var(--ink); margin: 0 var(--gut) 0 calc(var(--gut) + 24px); }

/* ---------- FAQ ---------- */
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: baseline; gap: 16px;
  padding: 18px 4px; font: 400 23px/1.3 var(--font-display); transition: color .18s, transform .25s var(--ease); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 400 26px/1 var(--font-data); color: var(--muted); transition: transform .3s var(--ease), color .18s; }
.faq summary:hover { color: var(--after); transform: translateX(8px); }
.faq summary:hover::after { color: var(--after); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details > div { padding: 0 4px 22px; max-width: 64ch; color: var(--ink); }

/* ---------- footer ---------- */
.foot { padding: 40px var(--gut) 56px calc(var(--gut) + 24px); border-top: 1.5px solid var(--ink); display: flex; flex-wrap: wrap; gap: 18px 36px;
  justify-content: space-between; align-items: baseline; font-size: 14.5px; color: var(--muted); }
.foot nav { display: flex; flex-wrap: wrap; gap: 8px 22px; }

/* ---------- copy button ---------- */
.copy { font: 500 12px/1 var(--font-body); letter-spacing: .08em; text-transform: uppercase; color: var(--link); background: none;
  border: 1px solid color-mix(in srgb, var(--link) 45%, transparent); padding: 6px 8px; cursor: pointer; border-radius: 2px;
  transition: background .18s, color .18s, border-color .18s, transform .15s; }
.copy:hover { background: var(--link); color: var(--bg); border-color: var(--link); }
.copy:active { transform: scale(.96); }
.copy[data-done] { color: var(--after); border-color: var(--after); background: none; }

/* touch: every control reaches a 44px target */
@media (pointer: coarse) {
  .btn.sm, .copy { min-height: 44px; }
  .brand, .nav-links a:not(.btn) { display: inline-flex; align-items: center; min-height: 44px; }
  .foot nav a, .entry .tx, .txlink, .sheet-foot a { display: inline-block; padding: 12px 0; max-width: 100%; overflow-wrap: anywhere; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001s !important; animation-delay: 0s !important; transition-duration: .001s !important; scroll-behavior: auto !important; }
}
@media print {
  .nav, .skip { display: none; }
  body { background-image: none; }
}

/* No color-mix() (Chrome <111, Safari <16.2, Firefox <113): a var() inside an unsupported function voids the whole
   declaration at computed time, so the bars/nav would render transparent. Re-state them with flat tokens. */
@supports not (color: color-mix(in srgb, red 50%, blue)) {
  body { background-image:
    linear-gradient(to right, transparent 26px, var(--margin) 26px, var(--margin) 27.5px, transparent 27.5px,
                    transparent 31px, var(--margin) 31px, var(--margin) 32.5px, transparent 32.5px),
    repeating-linear-gradient(to bottom, transparent 0 calc(var(--row) - 1px), var(--paper-2) calc(var(--row) - 1px) var(--row)); }
  .nav { background: var(--bg); }
  .ledger tr:nth-child(8n) td { border-bottom-color: var(--rule); }
}