/* Holotype — palette lifted from the HT proposal documents */
:root {
  --tan: #c9b99a; --mint: #a6ddd8; --orange: #e5703a; --brown: #4a4136;
  --teal: #137a6f; --teal-soft: #e8f6f3; --ink: #1f1c18; --muted: #6f675d;
  --line: #e4ded3; --paper: #ffffff; --bg: #f7f5f1; --head: #f3efe7;
  --ok: #137a6f; --bad: #c2410c; --warn: #b7791f;
  --sans: "Inter", -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", Menlo, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { font: 14px/1.55 var(--sans); color: var(--ink); background: var(--bg); }
a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }
.stripe { display: flex; height: 6px; }
.stripe span:nth-child(1) { background: var(--tan); flex: 2; }
.stripe span:nth-child(2) { background: var(--mint); flex: 1.8; }
.stripe span:nth-child(3) { background: var(--orange); flex: 2.4; }
.stripe span:nth-child(4) { background: var(--brown); flex: 3.8; }

/* layout */
.shell { display: grid; grid-template-columns: 232px 1fr; min-height: calc(100vh - 6px); }
.side { background: var(--paper); border-right: 1px solid var(--line); padding: 24px 18px; display: flex; flex-direction: column; gap: 4px; }
.brand { font-weight: 800; letter-spacing: .04em; color: var(--brown); font-size: 17px; margin-bottom: 2px; }
.brand-sub { font: 600 10px/1.3 var(--sans); letter-spacing: .18em; text-transform: uppercase; color: var(--teal); margin-bottom: 22px; }
.side a.nav { color: var(--brown); padding: 8px 10px; border-radius: 6px; font-weight: 500; }
.side a.nav:hover { background: var(--head); text-decoration: none; }
.side a.nav.on { background: var(--teal-soft); color: var(--teal); font-weight: 700; }
.side .spacer { flex: 1; }
.side .who { font-size: 12px; color: var(--muted); border-top: 1px solid var(--line); padding-top: 12px; }
.main { padding: 28px 36px 60px; max-width: 1240px; width: 100%; }

/* type */
.eyebrow { font: 700 11px/1.3 var(--sans); letter-spacing: .2em; text-transform: uppercase; color: var(--teal); }
h1 { font-size: 28px; line-height: 1.15; font-weight: 800; color: var(--brown); margin: 4px 0 18px; letter-spacing: -.01em; }
h2.sec { display: flex; align-items: baseline; gap: 10px; font-size: 16px; font-weight: 800; color: var(--brown);
  text-transform: uppercase; letter-spacing: .02em; border-bottom: 2px solid var(--brown); padding-bottom: 8px; margin: 28px 0 14px; }
h2.sec .num { color: var(--orange); font-size: 20px; }
h2.sec .aside { margin-left: auto; font: 600 10px var(--sans); letter-spacing: .16em; color: var(--muted); }
.muted { color: var(--muted); }
.mono, code { font-family: var(--mono); font-size: 12px; }
code { background: var(--head); padding: 1px 6px; border-radius: 3px; }
.hash { font-family: var(--mono); font-size: 11px; word-break: break-all; color: var(--brown); }
.head-row { display: flex; align-items: flex-end; gap: 12px; flex-wrap: wrap; }
.head-row .grow { flex: 1; }

/* components */
.card { background: var(--paper); border: 1px solid var(--line); border-radius: 4px; padding: 18px 20px; }
.card.accent { border-top: 4px solid var(--teal); }
.card.warn { border-top: 4px solid var(--orange); }
.grid { display: grid; gap: 14px; }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }
.stat-label { font: 700 11px var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.stat { font-size: 26px; font-weight: 800; color: var(--brown); margin: 4px 0; font-variant-numeric: tabular-nums; }
.stat small { font-size: 12px; color: var(--muted); font-weight: 500; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; font-size: 13px; }
.kv dt { color: var(--muted); } .kv dd { margin: 0; font-weight: 600; }

table.tbl { width: 100%; border-collapse: collapse; background: var(--paper); border: 1px solid var(--line); }
.tbl th { background: var(--head); text-align: left; font: 700 11px var(--sans); letter-spacing: .1em; text-transform: uppercase;
  color: var(--brown); padding: 10px 12px; border-bottom: 2px solid var(--brown); }
.tbl td { padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.tbl tr:hover td { background: #fbfaf7; }
.num-r { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }

.tag { display: inline-block; font: 700 10px var(--mono); letter-spacing: .08em; text-transform: uppercase; padding: 2px 7px; border-radius: 3px; }
.tag.draft { background: var(--head); color: var(--muted); }
.tag.issued { background: var(--teal-soft); color: var(--teal); }
.tag.paid { background: var(--teal); color: #fff; }
.tag.cancelled { background: #fde9df; color: var(--bad); text-decoration: line-through; }
.tag.overdue { background: #fde9df; color: var(--bad); }
.tag.ccy { background: var(--brown); color: #fff; }

.btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--brown); background: var(--paper); color: var(--brown);
  padding: 8px 14px; border-radius: 4px; font: 600 13px var(--sans); cursor: pointer; text-decoration: none; }
.btn:hover { background: var(--head); text-decoration: none; }
.btn.primary { background: var(--teal); border-color: var(--teal); color: #fff; }
.btn.primary:hover { background: #0f6359; }
.btn.danger { border-color: var(--bad); color: var(--bad); }
.btn.sm { padding: 4px 10px; font-size: 12px; }
.btn.link { border: 0; background: none; padding: 0; color: var(--teal); }

/* forms */
label { display: block; font: 600 12px var(--sans); color: var(--brown); margin-bottom: 4px; }
.input { width: 100%; padding: 8px 10px; border: 1px solid #d6cfc2; border-radius: 4px; font: 14px var(--sans); background: #fff; color: var(--ink); }
.input:focus { outline: 2px solid var(--mint); border-color: var(--teal); }
textarea.input { resize: vertical; }
.field { margin-bottom: 12px; }
.field .help { font-size: 11px; color: var(--muted); margin-top: 3px; }
.errorlist { color: var(--bad); font-size: 12px; margin: 4px 0 0; padding: 0; list-style: none; }
.fields { display: grid; gap: 0 16px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.fields .wide { grid-column: 1 / -1; }
fieldset { border: 0; padding: 0; margin: 0 0 8px; }
legend { font: 700 11px var(--sans); letter-spacing: .18em; text-transform: uppercase; color: var(--teal); margin-bottom: 10px; }

.lines-table td { padding: 6px; } .lines-table .input { padding: 6px 8px; font-size: 13px; }
.lines-table td.del { text-align: center; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.filters .input { width: auto; }

.msgs { list-style: none; padding: 0; margin: 0 0 18px; }
.msgs li { padding: 10px 14px; border-left: 4px solid var(--teal); background: var(--teal-soft); margin-bottom: 6px; }
.msgs li.error { border-color: var(--bad); background: #fdf0e9; }
.check-row { display: flex; gap: 8px; align-items: flex-start; padding: 6px 0; }
.ok { color: var(--ok); font-weight: 700; } .bad { color: var(--bad); font-weight: 700; }
details.panel { background: var(--paper); border: 1px solid var(--line); border-radius: 4px; padding: 12px 16px; margin-bottom: 10px; }
details.panel summary { cursor: pointer; font-weight: 700; color: var(--brown); }

/* auth screens */
.auth { max-width: 420px; margin: 9vh auto; }
.auth .card { padding: 28px; }
.qr { width: 200px; height: 200px; background: #fff; padding: 8px; border: 1px solid var(--line); }
.codes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; font-family: var(--mono); font-size: 15px; }

/* document preview frame */
.doc-frame { background: #e9e5dd; padding: 28px; border-radius: 4px; overflow: auto; }
.doc-frame .page { margin: 0 auto; box-shadow: 0 6px 24px rgba(40, 30, 10, .12); }

@media (max-width: 960px) {
  .shell { grid-template-columns: 1fr; } .side { flex-direction: row; flex-wrap: wrap; padding: 12px; }
  .side .spacer, .brand-sub { display: none; } .g3, .g4, .g2 { grid-template-columns: 1fr; } .main { padding: 18px 16px; }
}

/* workflow tags */
.tag.p-not_sent { background: var(--head); color: var(--brown); }
.tag.p-sent { background: #e6e9fb; color: #3d3a9e; }
.tag.p-processing { background: #fff3d6; color: #8a5a00; }
.tag.p-partially_paid { background: var(--teal-soft); color: var(--teal); }
.tag.p-paid { background: var(--teal); color: #fff; }
.tag.p-disputed { background: #fde9df; color: var(--bad); }
.tag.p-cancelled { background: #fde9df; color: var(--bad); text-decoration: line-through; }
.tag.rev { background: var(--brown); color: #fff; }

/* economy charts */
.chart-card { padding-top: 14px; }
.chart { width: 100%; height: auto; display: block; }
.chart .gridline { stroke: var(--line); stroke-width: 1; }
.chart .axis { font: 11px var(--sans); fill: var(--muted); }
.chart .bar { transition: opacity .12s; }
.chart:hover .bar { opacity: .55; } .chart .bar:hover { opacity: 1; }
.legend { display: flex; gap: 18px; flex-wrap: wrap; font-size: 12px; color: var(--ink); margin-bottom: 6px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 6px; vertical-align: -1px; }
.hbar-row { display: grid; grid-template-columns: 92px 1fr 170px; gap: 10px; align-items: center; padding: 7px 0; }
.hbar-label { font-size: 12px; font-weight: 600; color: var(--brown); }
.hbar-val { text-align: right; font-variant-numeric: tabular-nums; font-size: 13px; font-weight: 600; }
.hbar-track { background: var(--head); height: 12px; border-radius: 0 4px 4px 0; }
.hbar-track.sm { height: 8px; display: inline-block; width: calc(100% - 52px); vertical-align: middle; margin-right: 8px; }
.hbar { background: #0e8f80; height: 100%; border-radius: 0 4px 4px 0; min-width: 0; }
.hbar.late { background: #e0662a; }
.stack { display: flex; gap: 2px; height: 22px; }
.stack > div { height: 100%; } .stack > div:first-child { border-radius: 4px 0 0 4px; } .stack > div:last-child { border-radius: 0 4px 4px 0; }
.tip { position: fixed; z-index: 50; pointer-events: none; background: var(--brown); color: #fff; font-size: 12px;
  padding: 6px 9px; border-radius: 4px; box-shadow: 0 4px 14px rgba(0,0,0,.18); white-space: nowrap; }
.tbl th.num-r { text-align: right; }