:root {
  color-scheme: light;
  --gq-color-ink: #111410;
  --gq-color-paper: #f3f0e8;
  --gq-color-paper-subtle: #e7e4dc;
  --gq-color-surface: #ffffff;
  --gq-color-acid: #c8f56a;
  --gq-color-text: #111410;
  --gq-color-text-muted: #55594f;
  --gq-color-separator: #b8bbb2;
  --gq-color-control-border: #60645c;
  --gq-color-danger-text: #8f2119;
  --gq-color-danger-surface: #ffe6e1;
  --gq-font-ui: 'Geist', 'Segoe UI', system-ui, sans-serif;
  --gq-font-data: 'Geist Mono', 'Cascadia Mono', ui-monospace, monospace;
  --gq-radius-control: .375rem;
  --gq-radius-panel: .625rem;
  --gq-duration-fast: 120ms;
}
* { 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); }
::selection { background: var(--gq-color-acid); color: var(--gq-color-ink); }
a { color: var(--gq-color-ink); text-underline-offset: .2em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--gq-color-ink); outline-offset: 2px; box-shadow: 0 0 0 6px var(--gq-color-acid); }
.skip-link { position: absolute; top: -10rem; left: 1rem; z-index: 2; padding: .75rem 1rem; background: var(--gq-color-surface); }
.skip-link:focus { top: .5rem; }
.topbar { min-height: 3.5rem; padding: .25rem 2rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; border-bottom: 1px solid var(--gq-color-separator); }
.topbar a { display: inline-flex; min-height: 44px; align-items: center; }
.brand { font-weight: 700; text-decoration: none; }
main, footer { width: min(100%, 78rem); margin-inline: auto; padding: 2rem; }
.intro { display: flex; align-items: flex-start; justify-content: space-between; gap: 2rem; margin-bottom: 1rem; }
h1 { font-size: 2rem; line-height: 1.25; letter-spacing: -.02em; margin: 0 0 .75rem; }
h2 { font-size: 1.25rem; line-height: 1.4; margin: 0; }
h3 { font-size: 1rem; margin: 2rem 0 .5rem; }
p { margin: 0 0 1rem; }
.intro p { max-width: 72ch; color: var(--gq-color-text-muted); margin: 0; }
.intro .button { flex-shrink: 0; }
.working-rule { color: var(--gq-color-text-muted); font-size: .875rem; max-width: 90ch; margin-bottom: 1.5rem; }
#worksheet { background: var(--gq-color-surface); padding: 1.5rem; border-radius: var(--gq-radius-panel); }
.worksheet-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
#row-count { font-size: .875rem; color: var(--gq-color-text-muted); margin: 0; }
.entry { border: 0; border-top: 1px solid var(--gq-color-separator); min-width: 0; margin: 0; padding: 1rem 0 1.5rem; }
.entry legend { font-weight: 600; padding: 0 .5rem 0 0; font-size: .875rem; }
.entry-grid { display: grid; grid-template-columns: minmax(12rem, 1.4fr) minmax(8rem, 1fr) minmax(8rem, 1fr) minmax(7rem, 1fr) minmax(8rem, 1fr) auto; gap: 1rem; align-items: start; }
.field { min-width: 0; }
label { display: block; font-weight: 600; font-size: .875rem; margin-bottom: .5rem; }
input[type=text], textarea { color: var(--gq-color-ink); background: var(--gq-color-surface); border: 1px solid var(--gq-color-control-border); border-radius: var(--gq-radius-control); font: 1rem/1.5 var(--gq-font-data); padding: .625rem .75rem; width: 100%; min-width: 0; min-height: 44px; caret-color: var(--gq-color-ink); }
input[type=text]:hover, textarea:hover { border-color: var(--gq-color-ink); }
input[type=checkbox] { width: 1.25rem; height: 1.25rem; accent-color: var(--gq-color-ink); flex-shrink: 0; margin: 0; }
.checkbox-field { padding-top: 1.75rem; }
.checkbox-field label { display: flex; align-items: center; gap: .5rem; min-height: 44px; font-weight: 400; margin: 0; cursor: pointer; }
small { display: block; font-size: .75rem; color: var(--gq-color-text-muted); margin-top: .5rem; overflow-wrap: anywhere; }
.field-error { color: var(--gq-color-danger-text); font-size: .875rem; margin: .5rem 0 0; overflow-wrap: anywhere; }
[aria-invalid=true] { border-color: var(--gq-color-danger-text) !important; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; min-height: 44px; border: 1px solid var(--gq-color-control-border); border-radius: var(--gq-radius-control); color: var(--gq-color-ink); font: 600 .875rem/1.4 var(--gq-font-ui); padding: .75rem 1rem; cursor: pointer; transition: background-color var(--gq-duration-fast); }
.button.primary { background: var(--gq-color-acid); border-color: var(--gq-color-ink); }
.button.primary:hover { background: #b9e75b; }
.button.secondary { background: var(--gq-color-surface); }
.button.secondary:hover, .button.quiet:hover { background: var(--gq-color-paper-subtle); }
.button.quiet { background: transparent; }
.button:active { transform: translateY(1px); }
.button:disabled { cursor: default; color: var(--gq-color-text-muted); background: var(--gq-color-paper-subtle); transform: none; }
.remove { margin-top: 1.75rem; }
.actions, .calculate-actions { display: flex; gap: .75rem; flex-wrap: wrap; }
.actions { align-items: center; justify-content: space-between; padding-top: 1rem; border-top: 1px solid var(--gq-color-separator); }
.status { margin: 1rem 0; color: var(--gq-color-text-muted); }
.errors { color: var(--gq-color-danger-text); background: var(--gq-color-danger-surface); padding: .75rem 1rem; margin-bottom: 1.5rem; }
.errors ul { margin: 0; padding-left: 1.5rem; }
.errors a { display: inline-flex; align-items: center; min-height: 44px; color: inherit; }
#results { border-top: 1px solid var(--gq-color-ink); padding-top: 1.5rem; margin-top: 2rem; }
.result-heading { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.total-duration { font: 600 clamp(1.5rem, 3vw, 2rem)/1.4 var(--gq-font-data); margin: .5rem 0 0; overflow-wrap: anywhere; }
.total-info { display: flex; flex-wrap: wrap; gap: 1.5rem 2rem; margin: 1rem 0 2rem; }
.total-info div { display: flex; align-items: baseline; gap: .75rem; }
.total-info dt { color: var(--gq-color-text-muted); font-size: .875rem; }
.total-info dd { font-family: var(--gq-font-data); margin: 0; }
.table-region { overflow-x: auto; max-width: 100%; scrollbar-color: var(--gq-color-control-border) var(--gq-color-paper-subtle); }
table { border-collapse: collapse; width: 100%; font-size: .875rem; }
th { text-align: left; font-weight: 600; color: var(--gq-color-text-muted); }
th, td { padding: .75rem 1rem .75rem 0; border-bottom: 1px solid var(--gq-color-separator); white-space: nowrap; }
td { font-family: var(--gq-font-data); }
.report-block { margin-top: 2rem; }
.report-block p { font-size: .875rem; color: var(--gq-color-text-muted); }
textarea { resize: vertical; display: block; line-height: 1.6; }
#copy-status { margin-top: .5rem; }
.help { border-top: 1px solid var(--gq-color-separator); margin-top: 3rem; padding-top: 2rem; max-width: 72ch; }
.help h2 { margin-bottom: 1rem; }
.help p { color: var(--gq-color-text-muted); }
footer { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1rem; color: var(--gq-color-text-muted); font-size: .875rem; padding-top: 1rem; padding-bottom: 2rem; }
footer a { display: inline-flex; align-items: center; min-height: 44px; }
@media (min-width: 48rem) and (max-width: 74.999rem) {
  .topbar { padding-inline: 1.5rem; }
  main, footer { padding-inline: 1.5rem; }
  .entry-grid { grid-template-columns: minmax(12rem, 1.5fr) repeat(2, minmax(8rem, 1fr)); }
  .checkbox-field, .remove { padding-top: 0; margin-top: 0; }
  .remove { align-self: end; }
}
@media (max-width: 47.999rem) {
  .topbar { padding-inline: 1rem; }
  main, footer { padding-inline: 1rem; }
  main { padding-top: 1.5rem; }
  .intro { flex-direction: column; gap: 1rem; }
  h1 { font-size: 1.75rem; }
  #worksheet { padding: 1rem; }
  .entry-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .field-date { grid-column: 1 / -1; }
  .checkbox-field { grid-column: 1 / -1; padding-top: 0; }
  .remove { margin-top: 1.75rem; }
  .actions { align-items: stretch; }
  .calculate-actions { width: 100%; }
  .calculate-actions .primary { flex-grow: 1; }
  .total-info { flex-direction: column; gap: .5rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
  .button:active { transform: none; }
}