/* Tab - black ink on white paper, on a dark counter. The whole system is one typeface: the
   account's mark is a barcode and its demo is a receipt, so the site is set like print, not like
   a dashboard. */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600;700&display=swap');

:root {
  --ink: #15140f;
  --ink-2: #4a473c;
  --ink-3: #8a8575;
  --rule: #d9d4c4;
  --paper: #fbfaf5;
  --paper-2: #f2efe4;
  --counter: #12110f;
  --counter-2: #1b1a16;
  --stamp: #cc2936;
  --ok: #16713c;
  --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --sheet: min(1120px, 100%);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--counter);
  color: var(--ink);
  font: 400 15px/1.55 var(--mono);
  font-variant-ligatures: none;
  min-height: 100vh;
}

/* The counter: faint vertical hairlines, a barcode you only notice if you look. */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    repeating-linear-gradient(90deg,
      rgba(255,255,255,.045) 0 2px, transparent 2px 7px,
      rgba(255,255,255,.028) 7px 10px, transparent 10px 19px,
      rgba(255,255,255,.04) 19px 22px, transparent 22px 31px),
    radial-gradient(130% 90% at 50% -10%, rgba(255,255,255,.07), transparent 60%);
}

.wrap { position: relative; z-index: 1; width: var(--sheet); margin: 0 auto; padding: 0 16px 72px; }

/* ---- masthead ---------------------------------------------------------- */

.masthead {
  display: flex; align-items: center; gap: 14px;
  padding: 22px 0 16px; color: var(--paper);
}
.mark { display: flex; align-items: center; gap: 11px; text-decoration: none; color: inherit; }
.mark svg { display: block; width: 34px; height: 34px; border-radius: 7px; background: var(--paper); padding: 3px; }
.wordmark { font-weight: 700; font-size: 19px; letter-spacing: .34em; }
.masthead .spacer { flex: 1; }

/* The wallet button. It lives on the dark counter, so it is the one control that is not black
   on paper: an outline that fills in once an account is connected. */
button.connect {
  display: inline-flex; align-items: center; gap: 9px;
  font: 600 12px/1 var(--mono); letter-spacing: .13em; text-transform: uppercase;
  color: rgba(251,250,245,.78); background: transparent;
  border: 1px solid rgba(251,250,245,.22); border-radius: 999px;
  padding: 10px 16px; white-space: nowrap; cursor: pointer;
}
button.connect:hover { color: var(--paper); border-color: rgba(251,250,245,.5); background: rgba(251,250,245,.06); }
button.connect .dot { width: 6px; height: 6px; border-radius: 50%; background: #5fb97f; box-shadow: 0 0 0 3px rgba(95,185,127,.2); }
button.connect.on { color: var(--paper); border-color: rgba(95,185,127,.55); background: rgba(95,185,127,.1); text-transform: none; letter-spacing: .04em; }
button.connect.on:hover { background: rgba(95,185,127,.16); }
button.connect.wrong { color: #ffd9dc; border-color: rgba(204,41,54,.6); background: rgba(204,41,54,.16); }
button.connect.wrong .dot { background: var(--stamp); box-shadow: 0 0 0 3px rgba(204,41,54,.22); }
button.connect.none, button.connect:disabled {
  color: rgba(251,250,245,.34); border-color: rgba(251,250,245,.14);
  background: transparent; cursor: not-allowed;
}

/* ---- folder tabs ------------------------------------------------------- */

nav.tabs { display: flex; gap: 3px; overflow-x: auto; scrollbar-width: none; padding: 0 2px; }
nav.tabs::-webkit-scrollbar { display: none; }
nav.tabs a {
  flex: none;
  font-size: 12.5px; letter-spacing: .13em; text-transform: uppercase; font-weight: 600;
  text-decoration: none; color: rgba(251,250,245,.6);
  background: var(--counter-2);
  border: 1px solid rgba(251,250,245,.12); border-bottom: none;
  border-radius: 8px 8px 0 0;
  padding: 9px 16px 8px; margin-bottom: -1px;
}
nav.tabs a:hover { color: var(--paper); background: #24231d; }
nav.tabs a[aria-current='page'] {
  color: var(--ink); background: var(--paper); border-color: var(--paper);
  position: relative; z-index: 2;
}

/* ---- the sheet --------------------------------------------------------- */

.sheet {
  background: var(--paper);
  border: 1px solid var(--paper);
  border-radius: 0 10px 10px 10px;
  box-shadow: 10px 12px 0 rgba(0,0,0,.42);
  padding: 34px 32px 38px;
}
.sheet + .sheet { margin-top: 22px; border-radius: 10px; }

h1 { font-size: clamp(27px, 5.4vw, 46px); line-height: 1.08; letter-spacing: -.018em; font-weight: 700; margin: 0 0 16px; }
h1 .thin { color: var(--ink-3); font-weight: 400; }
h2 { font-size: 13px; letter-spacing: .17em; text-transform: uppercase; color: var(--ink-3); font-weight: 600; margin: 0 0 14px; }
h3 { font-size: 16px; font-weight: 600; margin: 0 0 7px; letter-spacing: -.01em; }
p { margin: 0 0 13px; max-width: 70ch; color: var(--ink-2); }
p.lead { font-size: 17px; color: var(--ink); max-width: 62ch; }
a { color: var(--ink); text-decoration-thickness: 1px; text-underline-offset: 3px; }
code, .mono { font-family: var(--mono); }

.rule { border: none; border-top: 1px solid var(--rule); margin: 26px 0; }
.rule.dashed { border-top-style: dashed; }

/* The perforation between a receipt's halves. */
.perf { position: relative; height: 1px; background: repeating-linear-gradient(90deg, var(--rule) 0 7px, transparent 7px 13px); margin: 26px 0; }

/* ---- grids ------------------------------------------------------------- */

.cols { display: grid; gap: 22px; }
.cols.c2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cols.c3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cols.hero { grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); align-items: start; gap: 34px; }

.card { border: 1px solid var(--rule); border-radius: 8px; padding: 18px; background: #fff; }
.card .kicker { font-size: 11px; letter-spacing: .15em; text-transform: uppercase; color: var(--stamp); font-weight: 600; margin-bottom: 9px; }
.card p { margin-bottom: 0; font-size: 14px; }

/* ---- key/value rows ---------------------------------------------------- */

.kv { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.kv td { padding: 9px 0; border-bottom: 1px dashed var(--rule); vertical-align: top; }
.kv tr:last-child td { border-bottom: none; }
.kv td:first-child { color: var(--ink-3); white-space: nowrap; padding-right: 18px; width: 1%; }
.kv td:last-child { text-align: right; font-weight: 500; overflow-wrap: anywhere; }
.kv.left td:last-child { text-align: left; }

.figures { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); border-radius: 8px; overflow: hidden; }
.figure { background: #fff; padding: 15px 16px; }
.figure .label { font-size: 10.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); }
.figure .value { font-size: 21px; font-weight: 600; letter-spacing: -.02em; margin-top: 5px; }
.figure .value.em { color: var(--stamp); }

/* ---- the receipt ------------------------------------------------------- */

.receipt {
  background: #fff; border: 1px solid var(--rule); border-radius: 6px;
  padding: 20px 20px 22px; font-size: 13px;
  box-shadow: 0 1px 0 var(--rule), 0 14px 26px -18px rgba(0,0,0,.4);
}
.receipt .barcode { margin: 2px auto 14px; display: block; }
.receipt .brand { text-align: center; font-weight: 700; letter-spacing: .4em; font-size: 13px; margin-bottom: 16px; }
.receipt .line { display: flex; gap: 10px; padding: 3px 0; }
.receipt .line .k { color: var(--ink-3); }
.receipt .line.req { font-weight: 500; }
.receipt .stamp { color: var(--stamp); font-weight: 700; letter-spacing: .06em; }
.receipt .served { color: var(--ok); font-weight: 700; letter-spacing: .06em; }
.receipt .total { display: flex; justify-content: space-between; font-weight: 600; margin-top: 4px; }

/* ---- controls ---------------------------------------------------------- */

button, .btn {
  font: 600 13px/1 var(--mono); letter-spacing: .11em; text-transform: uppercase;
  background: var(--ink); color: var(--paper); border: 1px solid var(--ink);
  padding: 12px 18px; border-radius: 7px; cursor: pointer;
}
button:hover { background: #2d2b23; }
button:disabled { background: var(--paper-2); color: var(--ink-3); border-color: var(--rule); cursor: not-allowed; }
.btn { display: inline-block; text-decoration: none; }
button.ghost, .btn.ghost { background: transparent; color: var(--ink); border-color: var(--rule); }
button.ghost:hover, .btn.ghost:hover { background: var(--paper-2); border-color: var(--ink-3); }
button.stamp { background: var(--stamp); border-color: var(--stamp); }
button.stamp:hover { background: #b2222e; }
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

input, select, textarea {
  font: 400 13.5px/1.4 var(--mono); color: var(--ink);
  background: #fff; border: 1px solid var(--rule); border-radius: 7px; padding: 11px 12px; width: 100%;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--ink); outline-offset: -1px; }
label { display: block; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 6px; }
.field + .field { margin-top: 14px; }

pre {
  background: var(--counter); color: #eceadf; border-radius: 8px;
  padding: 16px 18px; overflow: auto; max-height: 520px;
  font-size: 12.5px; line-height: 1.6; margin: 0;
}
pre .c { color: #8a8777; }
pre .s { color: #d7c58a; }
pre .k { color: #9fc5e8; }
pre b { color: #fff; font-weight: 600; }

/* ---- the check list ---------------------------------------------------- */

.checks { list-style: none; margin: 0; padding: 0; font-size: 13px; }
.checks li { display: flex; gap: 11px; padding: 8px 0; border-bottom: 1px dashed var(--rule); align-items: baseline; }
.checks li:last-child { border-bottom: none; }
.checks .glyph { width: 15px; flex: none; font-weight: 700; }
.checks .ok .glyph { color: var(--ok); }
.checks .no .glyph { color: var(--stamp); }
.checks .id { width: 112px; flex: none; color: var(--ink-3); }
.checks .detail { color: var(--ink-2); overflow-wrap: anywhere; }

.note { font-size: 12.5px; color: var(--ink-3); }
.hash { font-size: 12.5px; overflow-wrap: anywhere; }
.dash { color: var(--ink-3); }

footer.counterfoot { color: rgba(251,250,245,.42); font-size: 12px; padding: 22px 2px 0; display: flex; flex-wrap: wrap; gap: 14px; }
footer.counterfoot a { color: rgba(251,250,245,.72); }

/* ---- the scan ---------------------------------------------------------- */

@keyframes scan { from { transform: translateX(-6%); opacity: 0; } 12% { opacity: 1; } 88% { opacity: 1; } to { transform: translateX(106%); opacity: 0; } }
.scanline { animation: scan 1.5s cubic-bezier(.4,0,.2,1) .25s 1 both; }
@media (prefers-reduced-motion: reduce) { .scanline { animation: none; opacity: 0; } }

/* ---- responsive -------------------------------------------------------- */

@media (max-width: 900px) {
  .cols.hero, .cols.c3, .cols.c2 { grid-template-columns: minmax(0, 1fr); }
  .figures { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .sheet { padding: 26px 20px 30px; box-shadow: 6px 7px 0 rgba(0,0,0,.4); }
}
@media (max-width: 560px) {
  .wrap { padding: 0 14px 56px; }
  .wide-only { display: none; }
  button.connect { padding: 9px 13px; font-size: 11px; }
  body { font-size: 14.5px; }
  .masthead { flex-wrap: wrap; gap: 10px; padding-bottom: 12px; }
  .masthead .spacer { display: none; }
  .checks li { flex-wrap: wrap; }
  .checks .id { width: auto; }
  .kv td:last-child { text-align: left; }
  .kv td { display: block; }
  .kv td:first-child { padding-bottom: 0; border-bottom: none; width: auto; }
}