* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--gq-color-paper); color: var(--gq-color-text); font: 1rem/1.6 var(--gq-font-ui); }
a { color: inherit; text-underline-offset: .2em; }
a:hover { text-decoration-thickness: 2px; }
button, input, select, textarea { font: inherit; color: inherit; }
button, input, select { min-height: 44px; }
button, select, input, textarea { border: 1px solid var(--gq-color-control-border); border-radius: var(--gq-radius-control); background: var(--gq-color-surface); }
button { padding: .5rem 1rem; cursor: pointer; }
button:hover:not(:disabled) { background: var(--gq-color-paper-subtle); }
button:active:not(:disabled) { transform: translateY(1px); }
button:disabled { cursor: default; color: var(--gq-color-text-muted); background: var(--gq-color-paper-subtle); }
button.primary { background: var(--gq-color-acid); border-color: var(--gq-color-ink); font-weight: 650; }
button.primary:hover { background: var(--gq-color-acid); box-shadow: inset 0 0 0 1px var(--gq-color-ink); }
:focus-visible { outline: 2px solid var(--gq-color-ink); outline-offset: 2px; box-shadow: 0 0 0 5px var(--gq-color-acid); }
input, select, textarea { width: 100%; padding: .5rem .75rem; }
input[type="checkbox"] { width: 1.25rem; height: 1.25rem; min-height: 0; accent-color: var(--gq-color-ink); flex-shrink: 0; }
[aria-invalid="true"] { border-color: var(--gq-color-danger-text); }
label { display: block; font-weight: 600; margin-bottom: .25rem; }
.amount, .result-amount { font-family: var(--gq-font-data); font-variant-numeric: tabular-nums; text-align: right; }
header { min-height: 3.5rem; border-bottom: 1px solid var(--gq-color-separator); }
.topbar { max-width: 72rem; padding: .5rem 1rem; margin: auto; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .5rem 1.5rem; }
.brand { text-decoration: none; font-weight: 700; min-height: 44px; display: inline-flex; align-items: center; }
nav { display: flex; gap: 1rem; flex-wrap: wrap; }
nav a { min-height: 44px; display: inline-flex; align-items: center; }
main { max-width: 64rem; margin: auto; padding: 1.5rem 1rem 3rem; }
h1 { font-size: clamp(1.75rem, 4vw, 2.25rem); line-height: 1.25; margin: 0 0 .75rem; letter-spacing: -.025em; }
h2 { font-size: 1.25rem; margin: 0 0 1rem; }
h3 { font-size: 1.125rem; margin: 1.5rem 0 .5rem; }
p { margin: .5rem 0; }
.intro { max-width: 72ch; margin-bottom: 1.5rem; }
.hint { font-size: .875rem; color: var(--gq-color-text-muted); font-weight: 400; }
.preview { font-size: .875rem; color: var(--gq-color-text-muted); }
.worksheet { background: var(--gq-color-surface); padding: 1.5rem; border: 1px solid var(--gq-color-separator); border-radius: var(--gq-radius-panel); }
.bill-settings { display: grid; grid-template-columns: minmax(10rem, 2fr) minmax(10rem, 1fr); gap: 1.5rem; }
#total { font-size: 1.75rem; min-height: 56px; }
.options { display: flex; align-items: flex-end; gap: 1.5rem; flex-wrap: wrap; margin: 1.5rem 0; }
.method { flex: 1; min-width: min(100%, 14rem); }
.toggle { display: flex; align-items: center; gap: .75rem; min-height: 44px; font-weight: 400; margin: 0; }
.people-heading { display: flex; align-items: baseline; gap: 1rem; justify-content: space-between; margin: 1.5rem 0 .5rem; }
.people-heading h2 { margin: 0; }
.person-row { border: 0; border-top: 1px solid var(--gq-color-separator); padding: 1rem 0; margin: 0; display: flex; flex-wrap: wrap; align-items: flex-start; gap: .75rem; min-width: 0; }
.person-number { padding: 0 .25rem; font-weight: 650; font-size: .875rem; }
.person-field { flex: 1 1 8rem; min-width: 0; }
.name-field { flex-grow: 2; }
.remove-button { align-self: flex-start; margin-top: 1.85rem; }
.field-error { font-size: .875rem; color: var(--gq-color-danger-text); margin: .25rem 0 0; overflow-wrap: anywhere; }
.field-error:empty { display: none; }
.people-actions { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.5rem; }
.form-error { color: var(--gq-color-danger-text); font-weight: 600; }
.form-error:not(:empty) { padding: .75rem; background: var(--gq-color-danger-surface); border-left: 3px solid var(--gq-color-danger-text); }
#draft-state { margin-top: 1rem; }
.results { margin-top: 1.5rem; padding-top: 1.5rem; border-top: 2px solid var(--gq-color-ink); }
.result-total { font-size: 1.5rem; font-weight: 650; font-variant-numeric: tabular-nums; }
.result-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: .25rem 1rem; padding: .75rem 0; border-bottom: 1px solid var(--gq-color-separator); }
.result-name, .result-detail { overflow-wrap: anywhere; }
.result-detail { color: var(--gq-color-text-muted); font-size: .875rem; }
.result-row .result-detail:last-child { text-align: right; }
.transfers { padding-left: 1.5rem; overflow-wrap: anywhere; }
.transfers li { margin: .5rem 0; }
#report { min-height: 14rem; resize: vertical; font-size: .875rem; line-height: 1.6; margin-top: .5rem; }
.report-label { margin-top: 1.5rem; }
.help { max-width: 72ch; margin-top: 2rem; }
details { border-top: 1px solid var(--gq-color-separator); padding: .75rem 0; }
summary { cursor: pointer; min-height: 44px; display: list-item; padding-top: .5rem; font-weight: 600; }
footer { margin-top: 2rem; font-size: .875rem; color: var(--gq-color-text-muted); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
@media (max-width: 47.999rem) {
  .worksheet { padding: 1rem; }
  .bill-settings { grid-template-columns: 1fr; gap: 1rem; }
  .options { gap: 1rem; }
  .person-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .name-field { grid-column: 1 / -1; }
  .remove-button { margin-top: 0; justify-self: start; }
  .people-heading { align-items: flex-start; flex-direction: column; gap: .25rem; }
  .result-row { grid-template-columns: minmax(0, 1fr); }
  .result-amount, .result-row .result-detail:last-child { text-align: left; }
}
@media (min-width: 48rem) { main { padding-inline: 1.5rem; } }
@media (min-width: 75rem) { main { padding-inline: 2rem; } }
@media (prefers-reduced-motion: reduce) { button:active:not(:disabled) { transform: none; } }