:root {
  --red: #e60012;
  --ink: #161314;
  --muted: #5a5353;
  --line: #e4e0df;
  --paper: #fafafa;
  --sans: "IBM Plex Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  background: var(--paper);
}

.num {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "pnum" 0, "tnum" 1;
}

.wrap {
  width: min(720px, calc(100% - 32px));
  margin: 0 auto;
  padding: 20px 0 64px;
}

.mast { margin-bottom: 16px; }

.brand {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
}

.lede {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.hero {
  display: grid;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.field { display: grid; gap: 4px; }

.lbl {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

input[type="number"],
input[type="text"] {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--ink);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 16px;
  font-weight: 500;
  padding: 4px 0 6px;
}

input:focus {
  outline: none;
  border-bottom-color: var(--red);
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  appearance: none;
  margin: 0;
}

input[type="number"] {
  appearance: textfield;
  font-variant-numeric: tabular-nums;
}

.invoice-field { max-width: 16em; }

.price-picks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}

.price-picks button {
  appearance: none;
  height: 34px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.price-picks button:hover:not(:disabled) { border-color: var(--red); }

.price-picks button.is-on {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
}

.price-picks button:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.weekly-wrap {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 6px;
}

.weekly-wrap em {
  color: var(--muted);
  font-style: normal;
  font-size: 13px;
  padding-bottom: 6px;
}

.linkish {
  appearance: none;
  border: 0;
  background: none;
  color: var(--red);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
}

.bill-label {
  margin: 0;
  color: var(--red);
  font-size: 12px;
  font-weight: 700;
}

.bill-amount {
  margin: 2px 0 0;
  font-size: 32px;
  font-weight: 700;
  line-height: 1.15;
}

.bill-amount.is-pop {
  animation: pop 0.3s ease;
}

.bill-meta {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.bill-unit {
  margin: 6px 0 0;
  font-size: 15px;
  font-weight: 700;
}

.section { margin-top: 20px; }

.section h2 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
}

.people {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--ink);
}

.person {
  padding: 12px 0 10px;
  border-bottom: 1px solid var(--line);
}

.person.is-paid { opacity: 0.45; }

.person.is-paid .person-pay-amount { text-decoration: line-through; }

.person-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 12px;
  align-items: end;
}

.person-pay { margin: 0; text-align: right; }

.person-pay-label {
  display: block;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
}

.person-pay-amount {
  display: block;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.15;
}

.person-pay-breakdown {
  margin: 4px 0 8px;
  color: var(--muted);
  font-size: 12px;
}

.item-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.item-row {
  display: grid;
  grid-template-columns: minmax(10em, 1.3fr) 6.5em 4.5em auto;
  gap: 8px 10px;
  align-items: end;
}

.item-pay {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  text-align: right;
}

.person-actions {
  display: flex;
  gap: 14px;
  margin-top: 8px;
}

.paid-check {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.paid-check input {
  width: 16px;
  height: 16px;
  accent-color: var(--red);
}

.remove,
.primary,
.ghost {
  appearance: none;
  font: inherit;
  cursor: pointer;
}

.remove {
  border: 0;
  background: none;
  color: var(--muted);
  font-size: 13px;
  padding: 0;
}

.remove:hover { color: var(--red); }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.primary,
.ghost {
  border: 1px solid var(--ink);
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 600;
}

.primary {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
}

.ghost { background: transparent; }

.bag {
  margin-top: 20px;
  padding: 14px 0 0;
  border-top: 1px solid var(--ink);
}

.bag-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.bag dt {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.bag dd {
  margin: 2px 0 0;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
}

.bag-note {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.invoice-status {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
}

.invoice-status.is-ok { color: #135c2a; }
.invoice-status.is-warn { color: #8a4b00; }

.print-sheet { display: none; }

@keyframes pop {
  from { transform: scale(0.98); opacity: 0.65; }
  to { transform: scale(1); opacity: 1; }
}

@media (max-width: 640px) {
  .person-main,
  .item-row,
  .bag-grid {
    grid-template-columns: 1fr 1fr;
  }

  .person-pay,
  .paid-check,
  .item-pay,
  .remove {
    grid-column: 1 / -1;
  }

  .person-pay { text-align: left; }
  .item-pay { text-align: left; }
}

@page {
  size: A4 portrait;
  margin: 12mm;
}

@media print {
  html, body {
    background: #fff;
    color: #000;
    font-size: 10.5pt;
    line-height: 1.3;
  }

  .no-print,
  .wrap > :not(.print-sheet) {
    display: none !important;
  }

  .wrap {
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
  }

  .print-sheet {
    display: block;
    width: 100%;
  }

  .print-sheet h1 {
    margin: 0 0 8px;
    font-size: 14pt;
  }

  .print-summary {
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1pt solid #000;
  }

  .print-bill-amount {
    margin: 0;
    font-size: 13pt;
    font-weight: 700;
  }

  .print-bill-meta,
  .print-bill-unit,
  .print-invoice {
    margin: 3px 0 0;
    font-size: 9.5pt;
  }

  .print-bill-unit {
    font-weight: 700;
  }

  .print-people {
    display: block;
  }

  .print-person {
    padding: 7px 0;
    border-bottom: 0.4pt solid #bbb;
    break-inside: avoid;
    page-break-inside: avoid;
  }

  .print-person-head {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 8px;
    align-items: baseline;
  }

  .print-person-name {
    margin: 0;
    font-size: 11pt;
    font-weight: 700;
  }

  .print-person-pay {
    margin: 0;
    font-size: 11pt;
    font-weight: 700;
    text-align: right;
  }

  .print-person-mark {
    margin: 0;
    width: 2em;
    text-align: center;
    font-size: 11pt;
  }

  .print-person-formula {
    margin: 3px 0 0;
    font-size: 9pt;
  }

  .print-item-list {
    margin: 3px 0 0;
    padding-left: 1.2em;
    font-size: 9pt;
  }

  .print-item-list li {
    margin: 0;
  }

  .print-footer {
    margin-top: 10px;
    padding-top: 8px;
    border-top: 1pt solid #000;
    break-inside: avoid;
    page-break-inside: avoid;
  }

  .print-totals,
  .print-note {
    margin: 0 0 3px;
    font-size: 10pt;
  }

  .print-totals {
    font-weight: 700;
  }
}