:root {
  --bg: #f6f1e7;
  --panel: #fffdf8;
  --line: #ddd3bf;
  --text: #24231f;
  --muted: #645f54;
  --accent: #1d4ed8;
  --button: #ece5d6;
  --button-hover: #e0d7c4;
  --sky: #eaf1f8;
  --ground: #f2ead8;
  --night: #2b3140;
  --daylight: #f7d98b;
  --grid: #d6cdb9;
  --axis: #8e8573;
  --hour: #b9ad95;
  --today: #c2410c;
  --june: #009e73;
  --december: #0072b2;
  --equinox: #7a6f5c;
  --sun: #e69f00;
  --shadow: #3b3a36;
  --pin: #0072b2;
  --noon: #24231f;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121418;
    --panel: #1b1e24;
    --line: #2f343d;
    --text: #e8e9ec;
    --muted: #a5a9b2;
    --accent: #93c5fd;
    --button: #252a32;
    --button-hover: #30363f;
    --sky: #17202c;
    --ground: #201e1a;
    --night: #0c0e13;
    --daylight: #6b5a2a;
    --grid: #333843;
    --axis: #6d7380;
    --hour: #4d525c;
    --today: #fb923c;
    --june: #2bb88f;
    --december: #56b4e9;
    --equinox: #a39a88;
    --sun: #f5b82e;
    --shadow: #d9d4c8;
    --pin: #56b4e9;
    --noon: #e8e9ec;
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, 'Segoe UI', sans-serif;
}

header,
footer {
  max-width: 1240px;
  margin: 0 auto;
  padding: 16px;
}

h1 {
  margin: 8px 0 4px;
  font-size: 1.8rem;
  letter-spacing: 0.02em;
}

.subtitle,
footer {
  color: var(--muted);
  max-width: 76ch;
}

main {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 16px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 16px;
  align-items: start;
}

@media (max-width: 900px) {
  main {
    grid-template-columns: minmax(0, 1fr);
  }
}

.views {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

@media (max-width: 640px) {
  .views {
    grid-template-columns: minmax(0, 1fr);
  }
}

.view {
  margin: 0;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
}

.view.wide {
  grid-column: 1 / -1;
}

figcaption {
  font-weight: 600;
  margin-bottom: 6px;
}

canvas {
  display: block;
  width: 100%;
  border-radius: 6px;
}

#sky,
#ground {
  aspect-ratio: 1 / 1;
  height: auto;
}

#year {
  height: 220px;
  cursor: crosshair;
}

.legend {
  margin: 6px 0 0;
  font-size: 0.82rem;
  color: var(--muted);
}

.key {
  display: inline-block;
  width: 14px;
  height: 3px;
  vertical-align: middle;
  margin: 0 3px 0 8px;
  border-radius: 2px;
}

.key:first-child {
  margin-left: 0;
}

.key.today { background: var(--today); }
.key.june { background: var(--june); }
.key.december { background: var(--december); }
.key.equinox { background: repeating-linear-gradient(90deg, var(--equinox) 0 4px, transparent 4px 7px); }
.key.hour { background: var(--hour); }
.key.shadow { background: var(--shadow); height: 4px; }
.key.daylight { background: var(--daylight); height: 10px; }
.key.noon { background: var(--noon); }

.panel {
  display: grid;
  gap: 12px;
}

fieldset {
  margin: 0;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 12px 12px;
}

legend {
  font-weight: 600;
  padding: 0 4px;
}

.row {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  margin: 6px 0;
}

.row > select,
.row > input[type='date'] {
  grid-column: 2 / -1;
}

.row input[type='number'] {
  width: 86px;
}

.inline input[type='number'] {
  width: 64px;
}

input[type='range'] {
  width: 100%;
  accent-color: var(--accent);
}

#day {
  margin: 2px 0 6px;
}

input,
select,
button {
  font: inherit;
  color: inherit;
}

input[type='number'],
input[type='date'],
select {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 3px 6px;
}

output {
  font-variant-numeric: tabular-nums;
  min-width: 3.2em;
  text-align: right;
}

.buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.buttons.small button {
  font-size: 0.8rem;
  padding: 3px 8px;
}

button {
  background: var(--button);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 5px 10px;
  cursor: pointer;
}

button:hover {
  background: var(--button-hover);
}

button[aria-pressed='true'] {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.note,
.hint {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 4px 0;
}

.note:empty {
  display: none;
}

.stats {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2px 12px;
  margin: 4px 0 0;
  font-size: 0.9rem;
}

.stats dt {
  color: var(--muted);
}

.stats dd {
  margin: 0;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.result {
  margin: 6px 0 0;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

details {
  margin-top: 10px;
  border-top: 1px solid var(--line);
  padding-top: 6px;
}

summary {
  cursor: pointer;
  font-size: 0.9rem;
}

.choice label,
.check {
  display: block;
  margin: 4px 0;
}

.print-preview {
  max-width: 420px;
  margin: 8px auto 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}

.print-preview svg {
  display: block;
  width: 100%;
  height: auto;
}

footer a {
  color: var(--accent);
}