* { 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); }
header { min-height: var(--gq-layout-topbar-height); padding: 0.5rem 1rem; display: flex; justify-content: space-between; gap: 1rem; border-bottom: 1px solid var(--gq-color-separator); flex-wrap: wrap; }
nav { display: flex; gap: 1rem; flex-wrap: wrap; }
nav a { display: inline-flex; align-items: center; min-height: 44px; }
main { max-width: var(--gq-layout-content-max); margin: auto; padding: 2rem 1rem; }
a { color: inherit; }
button, input, textarea { font: inherit; min-height: 44px; border: 1px solid var(--gq-color-control-border); border-radius: var(--gq-radius-control); }
button { padding: 0.5rem 1rem; color: var(--gq-color-ink); background: var(--gq-color-surface); cursor: pointer; transition: background-color var(--gq-duration-fast); overflow-wrap: anywhere; }
button:hover:enabled { background: var(--gq-color-paper-subtle); }
button:active:enabled { background: var(--gq-color-paper-subtle); transform: translateY(1px); }
button:disabled { cursor: default; opacity: 0.65; }
button.primary { background: var(--gq-color-acid); border-color: var(--gq-color-ink); font-weight: 650; }
button.primary:hover:enabled { background: var(--gq-color-success-surface); }
:focus-visible { outline: 2px solid var(--gq-color-ink); box-shadow: 0 0 0 4px var(--gq-color-acid); outline-offset: 1px; }
h1 { font-size: 2rem; line-height: 1.25; margin: 0 0 1rem; max-width: 28ch; }
h2 { font-size: 1.25rem; line-height: 1.4; margin: 0 0 1rem; }
h3 { font-size: 1.125rem; overflow-wrap: anywhere; }
p { max-width: var(--gq-layout-reading-max); margin: 0 0 1rem; }
.intro { font-size: 1.125rem; }
.privacy, small, footer { color: var(--gq-color-text-muted); font-size: 0.875rem; }
section { margin-top: 2rem; }
.reading { max-width: var(--gq-layout-reading-max); }
.field { min-width: 0; display: flex; flex-direction: column; gap: 0.25rem; }
label { font-weight: 600; }
input { min-width: 0; width: 100%; background: var(--gq-color-surface); color: var(--gq-color-text); padding: 0.5rem; }
input[inputmode="numeric"] { font-family: var(--gq-font-data); }
small { display: block; overflow-wrap: anywhere; }
.periods { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1.5rem; margin: 1.5rem 0; }
details { border-top: 1px solid var(--gq-color-separator); }
summary { min-height: 44px; padding: 0.5rem 0; cursor: pointer; font-weight: 600; overflow-wrap: anywhere; }
details > div, details > p { margin-top: 0.5rem; }
.section-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap; }
.section-heading span { color: var(--gq-color-text-muted); }
.item-row { min-width: 0; margin: 1rem 0; padding: 1rem; border: 1px solid var(--gq-color-separator); border-radius: var(--gq-radius-panel); display: grid; grid-template-columns: minmax(0, 1fr); gap: 1rem; }
legend { padding: 0 0.5rem; font-weight: 650; }
.remove { align-self: start; }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }
.calculate-actions { justify-content: space-between; padding-top: 1.5rem; margin-top: 1.5rem; border-top: 1px solid var(--gq-color-separator); }
.confirmation { border: 2px solid var(--gq-color-control-border); border-radius: var(--gq-radius-panel); padding: 1rem; background: var(--gq-color-surface); }
.status { margin-top: 1.5rem; padding: 1rem; background: var(--gq-color-paper-subtle); max-width: none; }
.status.success, .status.noOrder { color: var(--gq-color-success-text); background: var(--gq-color-success-surface); }
.warning, .status.error { color: var(--gq-color-warning-text); background: var(--gq-color-warning-surface); padding: 0.75rem; }
.status.blocked { color: var(--gq-color-danger-text); background: var(--gq-color-danger-surface); }
.field-error { color: var(--gq-color-danger-text); font-size: 0.875rem; overflow-wrap: anywhere; }
.field-error:empty { display: none; }
[aria-invalid="true"] { border: 2px solid var(--gq-color-danger-text); }
.result-item { border-top: 1px solid var(--gq-color-control-border); padding: 1rem 0; }
.result-values { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1rem; }
.result-values div { min-width: 0; }
dt { color: var(--gq-color-text-muted); font-size: 0.875rem; }
dd { margin: 0.25rem 0 0; font: 1rem/1.5 var(--gq-font-data); overflow-wrap: anywhere; }
.result-values div:first-child dd { font-size: 1.5rem; color: var(--gq-color-ink); font-weight: 650; }
textarea { display: block; width: 100%; max-width: 100%; min-height: 20rem; resize: vertical; padding: 1rem; font: 0.875rem/1.7 var(--gq-font-data); color: var(--gq-color-text); background: var(--gq-color-surface); overflow-wrap: anywhere; }
footer { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--gq-color-separator); }
.skip { position: absolute; left: 1rem; top: -10rem; background: var(--gq-color-acid); padding: 0.5rem; z-index: 1; }
.skip:focus { top: 0.5rem; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
@media (min-width: 48rem) {
  main { padding: 2rem 1.5rem; }
  header { padding-inline: 1.5rem; }
  .periods, .item-row { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .result-values { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 75rem) {
  main { padding-inline: 2rem; }
  header { padding-inline: 2rem; }
  .item-row { grid-template-columns: minmax(10rem, 1.5fr) repeat(5, minmax(0, 1fr)) auto; align-items: start; }
  .remove { margin-top: 1.75rem; }
}
@media (prefers-reduced-motion: reduce) {
  button { transition: none; }
  button:active:enabled { transform: none; }
}