:root {
  color-scheme: light dark;
  --bg: #f3f5f8;
  --card: #fff;
  --ink: #182738;
  --muted: #5e6c7b;
  --line: #dce3eb;
  --blue: #1669cc;
  --soft: #eaf2fd;
  --warn: #8a4b00;
  --warnbg: #fff3df;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font:
    16px system-ui,
    sans-serif;
}
.app {
  max-width: 480px;
  margin: auto;
  min-height: 100dvh;
}
header {
  padding: 18px 18px 12px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
}
.brand {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 12px;
}
.tabs {
  display: flex;
  gap: 8px;
}
.tabs button {
  flex: 1;
}
.demo {
  font-size: 12px;
  background: var(--warnbg);
  color: var(--warn);
  padding: 9px 18px;
}
main {
  padding: 20px 18px 110px;
}
h1 {
  font-size: 26px;
  margin: 0 0 8px;
  letter-spacing: -0.6px;
}
h2 {
  font-size: 18px;
  margin: 0 0 12px;
}
p {
  line-height: 1.5;
  margin: 8px 0;
}
.muted {
  color: var(--muted);
  font-size: 14px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  margin: 14px 0;
}
button {
  font: inherit;
  min-height: 46px;
  padding: 11px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  cursor: pointer;
}
button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}
.primary,
.active {
  background: var(--blue);
  border-color: var(--blue);
  color: white;
}
.link {
  border: 0;
  background: transparent;
  color: var(--blue);
  padding-left: 0;
}
.wide {
  width: 100%;
}
.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.badge {
  font-size: 12px;
  padding: 5px 9px;
  border-radius: 20px;
  background: var(--soft);
  color: var(--blue);
  white-space: nowrap;
}
.warn {
  background: var(--warnbg);
  color: var(--warn);
}
label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin: 18px 0 7px;
}
input,
select,
textarea {
  width: 100%;
  font: inherit;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: 10px;
  padding: 13px;
  min-height: 48px;
}
textarea {
  resize: vertical;
}
summary {
  cursor: pointer;
  min-height: 44px;
  display: flex;
  align-items: center;
  font-weight: 600;
}
details[open] summary {
  margin-bottom: 12px;
}
.totals {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.value {
  font-size: 23px;
  font-weight: 650;
  margin-top: 4px;
}
.bottom {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 480px;
  padding: 12px 18px calc(12px + env(safe-area-inset-bottom));
  background: var(--card);
  border-top: 1px solid var(--line);
}
.bottom button {
  width: 100%;
}
.check {
  display: flex;
  align-items: start;
  gap: 10px;
  font-weight: 400;
  line-height: 1.5;
}
.check input {
  width: 22px;
  min-height: 22px;
  flex-shrink: 0;
}
.notice {
  padding: 12px;
  border-radius: 12px;
  background: var(--warnbg);
  color: var(--warn);
  font-size: 14px;
}
.comparison {
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
}
.comparison span {
  display: block;
  font-size: 14px;
  margin-top: 6px;
}
.role {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.error {
  color: #b42318;
  margin-top: 12px;
}
button:disabled {
  opacity: 0.45;
  cursor: default;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101820;
    --card: #1b2632;
    --ink: #edf3fa;
    --muted: #a7b5c4;
    --line: #354451;
    --blue: #247cdd;
    --soft: #223b56;
    --warnbg: #382b1c;
    --warn: #ffd396;
  }
}

[hidden] {
  display: none !important;
}
.fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 12px;
}
button {
  touch-action: manipulation;
}
a {
  color: var(--blue);
}
.busy {
  opacity: 0.65;
}
.error:empty {
  display: none;
}
.save-status {
  font-size: 13px;
  min-height: 20px;
  color: var(--muted);
}
input,
textarea {
  font-size: 16px;
}
.bottom {
  padding-bottom: calc(12px + env(safe-area-inset-bottom));
}
main {
  overflow-wrap: anywhere;
}
.card h2 {
  overflow-wrap: anywhere;
}
.fields label {
  overflow-wrap: anywhere;
}
@media (max-width: 380px) {
  .fields {
    grid-template-columns: 1fr;
  }
}

.spaced {
  margin-top: 16px;
}

/* Keep inputs and actions inside the keyboard's visible viewport. */
.app {
  min-height: var(--tg-viewport-stable-height, 100dvh);
}
main {
  padding: 14px 16px calc(100px + var(--keyboard-inset, 0px));
}
header {
  padding: 12px 16px 10px;
}
.brand {
  margin-bottom: 8px;
}
h1 {
  font-size: 23px;
}
.card {
  padding: 12px 14px;
  margin: 10px 0;
}
label {
  margin-top: 12px;
}
input,
select,
textarea {
  padding: 11px 12px;
  scroll-margin: 80px 0;
}
.bottom {
  bottom: var(--keyboard-inset, 0px);
  padding: 9px 16px calc(9px + env(safe-area-inset-bottom));
}
.bottom:empty {
  display: none;
}
body:not(.has-footer) main {
  padding-bottom: calc(24px + var(--keyboard-inset, 0px));
}
.keyboard-open .bottom {
  padding-bottom: 9px;
}
.field-error {
  color: #b42318;
  font-size: 14px;
  margin: 6px 0 12px;
}
[aria-invalid="true"] {
  border: 2px solid #b42318;
  background: #fff3f1;
}
@media (prefers-color-scheme: dark) {
  .field-error {
    color: #ffb4ab;
  }
  [aria-invalid="true"] {
    border-color: #ffb4ab;
    background: #382322;
  }
}