:root {
  color-scheme: dark;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #edf0e9;
  background: #111512;
  font-synthesis: none;
  --line: #343e34;
  --accent: #edb75b;
}
* { box-sizing: border-box; }
body { margin: 0; min-width: 280px; }
button, input { font: inherit; }
button { cursor: pointer; }
.calculator { width: min(100% - 64px, 900px); margin: 32px auto; }
.workspace { display: grid; grid-template-columns: 1.1fr 1fr; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: #1a201b; }
form { padding: 28px; }
fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
fieldset + fieldset { margin-top: 28px; }
legend { padding: 0; margin-bottom: 15px; font-size: 1rem; font-weight: 600; }
.coordinate-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.coordinate-pair label { font-size: .875rem; font-weight: 600; min-width: 0; }
input { display: block; width: 100%; min-width: 0; min-height: 60px; margin-top: 8px; padding: 12px; color: #f5f7f0; background: #101611; border: 1px solid #475146; border-radius: 6px; font-family: ui-monospace, "Cascadia Code", monospace; font-size: 1.5rem; font-variant-numeric: tabular-nums; transition: border-color 120ms; }
input::placeholder { color: #6f7a6f; opacity: 1; }
input:hover { border-color: #8b9989; }
input[aria-invalid="true"] { border-color: #ff9b85; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
input:focus { border-color: var(--accent); outline-offset: 2px; }
.form-actions { display: flex; justify-content: flex-end; margin-top: 12px; }
button { color: #d4ddd0; border: 0; background: transparent; padding: 10px 0 10px 12px; min-height: 44px; font-size: .875rem; text-decoration: underline; text-underline-offset: 3px; }
button:hover { color: var(--accent); }
.results { display: flex; flex-direction: column; justify-content: center; padding: 28px; background: #222b22; border-left: 1px solid var(--line); min-width: 0; }
h2 { margin: 0 0 5px; font-size: .875rem; font-weight: 500; color: #c2cdbe; }
.measurement { margin: 0; line-height: 1.1; display: flex; align-items: baseline; gap: 7px; white-space: nowrap; }
output { font-family: ui-monospace, "Cascadia Code", monospace; font-size: clamp(2rem, 5.8vw, 3.5rem); font-weight: 600; letter-spacing: -.055em; font-variant-numeric: tabular-nums; }
.distance-result output, .distance-result .unit { color: var(--accent); }
.unit { font-size: 1.4rem; font-weight: 400; }
.bearing-result { border-top: 1px solid #414c3f; margin-top: 22px; padding-top: 20px; }
.status { margin: 20px 0 0; font-size: .8125rem; color: #ffb39f; line-height: 1.4; }
.status:empty { display: none; }
.noscript { color: #ffb39f; }
@media (max-width: 700px) {
  .calculator { width: min(100% - 32px, 470px); margin: 22px auto; }
  .workspace { grid-template-columns: 1fr; }
  form { padding: 20px 20px 10px; }
  fieldset + fieldset { margin-top: 20px; }
  legend { margin-bottom: 10px; }
  input { margin-top: 6px; min-height: 56px; font-size: 1.5rem; }
  .form-actions { margin-top: 6px; }
  .results { padding: 18px 20px; border-left: 0; border-top: 1px solid var(--line); }
  .readouts { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
  output { font-size: clamp(1.6rem, 7.5vw, 2.25rem); }
  .bearing-result { margin: 0; padding: 0 0 0 16px; border-top: 0; border-left: 1px solid #414c3f; }
  .unit { font-size: 1.125rem; }
  .measurement { gap: 4px; }
  .status { margin-top: 16px; }
}
@media (max-width: 340px) {
  .calculator { width: calc(100% - 24px); }
  form, .results { padding-left: 14px; padding-right: 14px; }
  input { padding: 10px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }