:root {
  color-scheme: dark;
  --bg: #0c0d10;
  --surface: #121419;
  --surface2: #171a20;
  --text: #e7e9ee;
  --muted: #a8adb8;
  --line: #343943;
  --signal: #5eead4;
  --accent: #ff4d87;
  --shadow: 0 18px 50px #0003;
}
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #edf0f4;
  --surface: #fff;
  --surface2: #f3f5f7;
  --text: #1b1d23;
  --muted: #4d5461;
  --line: #bdc5d0;
  --signal: #0b5f58;
  --accent: #a50f4d;
  --shadow: 0 18px 50px #1621340a;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font:
    17px/1.65 system-ui,
    -apple-system,
    "Segoe UI",
    sans-serif;
}
a {
  color: var(--signal);
  text-underline-offset: 3px;
}
button,
input {
  font: inherit;
}
button {
  cursor: pointer;
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 4px;
}
button {
  min-height: 44px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  padding: 0.5rem 0.8rem;
  border-radius: 6px;
}
button:hover {
  border-color: var(--signal);
}
.wrap {
  max-width: 1140px;
  margin: auto;
  padding: 24px;
}
.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.brand {
  font:
    700 22px ui-monospace,
    monospace;
  letter-spacing: -1px;
}
.brand span {
  color: var(--signal);
}
.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.kicker {
  font:
    12px ui-monospace,
    monospace;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--signal);
  margin: 48px 0 10px;
}
h1 {
  font-size: clamp(32px, 5vw, 54px);
  line-height: 1.1;
  letter-spacing: -1.6px;
  max-width: 850px;
  margin: 0 0 22px;
}
h2 {
  font-size: 22px;
  line-height: 1.35;
  margin: 0 0 18px;
}
h3 {
  font-size: 18px;
  margin: 0 0 6px;
}
.intro {
  max-width: 840px;
  color: var(--muted);
  font-size: 18px;
}
.notice {
  border-left: 3px solid var(--accent);
  padding: 12px 18px;
  background: var(--surface);
  margin: 24px 0 28px;
}
.notice p {
  margin: 0;
}
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1.07fr) minmax(0, 1fr);
  align-items: start;
  gap: 24px;
}
.panel {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  min-width: 0;
  box-shadow: var(--shadow);
}
fieldset {
  border: 0;
  padding: 0;
  margin: 0;
  min-width: 0;
}
.fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 16px;
}
.field {
  display: block;
  min-width: 0;
}
.field .label {
  display: block;
  font-size: 14px;
  font-weight: 650;
  line-height: 1.4;
  min-height: 40px;
}
.input-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 6px 0;
}
.input-row input {
  width: 100%;
  min-width: 0;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--line);
  padding: 9px 10px;
  border-radius: 5px;
  font:
    17px ui-monospace,
    monospace;
  min-height: 44px;
}
.input-row input[aria-invalid="true"] {
  border: 2px solid var(--accent);
}
.unit {
  font-size: 12px;
  white-space: nowrap;
  color: var(--muted);
}
.hint {
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
  display: block;
}
.wide {
  grid-column: 1/-1;
}
.presets {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 0 0 22px;
}
.presets button {
  font-size: 13px;
}
.form-end {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 22px;
}
.form-end p {
  font-size: 12px;
  color: var(--muted);
  margin: 0;
}
.advanced {
  margin-top: 24px;
  border-top: 1px solid var(--line);
  padding-top: 15px;
}
summary {
  cursor: pointer;
  font-weight: 600;
  min-height: 44px;
  padding: 7px 0;
}
.advanced .fields {
  margin-top: 15px;
}
.results {
  position: sticky;
  top: 20px;
}
.status {
  padding: 14px 16px;
  background: var(--surface2);
  border-left: 3px solid var(--signal);
  font-size: 15px;
  margin: 0 0 20px;
}
.status[data-direction="park"] {
  border-color: var(--accent);
}
.result-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.result-label {
  font-size: 13px;
  color: var(--muted);
  display: block;
  line-height: 1.45;
}
.value {
  font:
    600 clamp(21px, 1.75vw, 24px)/1.35 ui-monospace,
    monospace;
  display: block;
  margin: 7px 0 5px;
  overflow-wrap: anywhere;
}
.delta {
  padding: 20px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin: 18px 0;
}
.delta .value {
  font-size: 32px;
  color: var(--signal);
}
.delta[data-direction="park"] .value {
  color: var(--accent);
}
.lineitem {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  font-size: 13px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}
.lineitem span:first-child {
  max-width: 67%;
  color: var(--muted);
}
.lineitem output {
  white-space: nowrap;
  font-family: ui-monospace, monospace;
}
.threshold {
  font-size: 14px;
  line-height: 1.6;
  margin: 18px 0;
}
.deposit {
  font-size: 13px;
  color: var(--muted);
  padding: 14px;
  background: var(--surface2);
  border-radius: 5px;
}
.deposit strong {
  color: var(--text);
}
.error {
  border: 1px solid var(--accent);
  padding: 16px;
  border-radius: 5px;
  color: var(--text);
}
[hidden] {
  display: none !important;
}
.method {
  max-width: 900px;
  margin-top: 40px;
}
.method p,
.method li {
  font-size: 15px;
  color: var(--muted);
}
.formula {
  font:
    14px/1.8 ui-monospace,
    monospace;
  background: var(--surface);
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow-wrap: anywhere;
}
.method ol {
  padding-left: 24px;
}
.foot {
  margin: 40px 0 12px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}
@media (max-width: 780px) {
  .layout {
    grid-template-columns: 1fr;
  }
  .results {
    position: static;
  }
  .wrap {
    padding: 18px;
  }
  .panel {
    padding: 18px;
  }
  .kicker {
    margin-top: 32px;
  }
  .value {
    font-size: 25px;
  }
  .intro {
    font-size: 17px;
  }
}
@media (max-width: 400px) {
  .fields {
    grid-template-columns: 1fr;
  }
  .field .label {
    min-height: 0;
  }
  .result-pair {
    grid-template-columns: 1fr;
  }
  .lineitem {
    font-size: 12px;
  }
  .lineitem output {
    font-size: 12px;
  }
  .delta .value {
    font-size: 28px;
  }
  .actions button {
    font-size: 13px;
  }
  .panel {
    padding: 16px;
  }
}
@media print {
  .actions,
  .presets,
  .form-end {
    display: none;
  }
  .wrap {
    max-width: none;
  }
  .layout {
    display: block;
  }
  .results {
    position: static;
    margin-top: 20px;
  }
  .panel {
    break-inside: avoid;
    box-shadow: none;
  }
  body {
    background: #fff;
    color: #111;
  }
  .kicker,
  .delta .value {
    color: #111;
  }
  .method {
    margin-top: 20px;
  }
  a {
    color: inherit;
  }
}