/* Daylight Gained: winter-morning palette. Cold snow-grey page, black ink, one block of low-sun yellow for the answer. */
:root {
  --bg: #f3f5f4;
  --surface: #ffffff;
  --ink: #101719;
  --muted: #47545a;
  --line: #d3dadc;
  --field-line: #7d8a90;
  --sun: #ffd23f;          /* answer block, chart area */
  --sun-ink: #101719;
  --sun-line: #9a6b00;     /* chart line, 3:1+ on white */
  --link: #0b5866;         /* cold teal, AA on bg */
  --focus: #0b5866;
  --grid: #e0e5e7;
  --night: #24323a;
  --radius: 6px;
  --font: "Avenir Next", "Segoe UI", "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  --num: "SF Pro Display", "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1316;
    --surface: #161e22;
    --ink: #e9eef0;
    --muted: #a8b5ba;
    --line: #2b373d;
    --field-line: #6b7a80;
    --sun: #f5c518;
    --sun-ink: #0e1316;
    --sun-line: #f5c518;
    --link: #7fd0dc;
    --focus: #7fd0dc;
    --grid: #253036;
    --night: #c9d3d6;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.55 var(--font); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
a { color: var(--link); text-underline-offset: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; background: var(--surface); padding: 8px 12px; z-index: 5; }

.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 14px; padding-bottom: 6px; }
.brand { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); text-decoration: none; font-weight: 700; letter-spacing: -0.01em; min-height: 44px; }
.top nav { display: flex; gap: 4px; }
.top nav a { color: var(--ink); padding: 10px; min-height: 44px; display: inline-flex; align-items: center; }

h1 { font-size: clamp(1.75rem, 5.2vw, 2.6rem); line-height: 1.12; letter-spacing: -0.02em; margin: 18px 0 10px; font-weight: 800; max-width: 22ch; }
.intro { margin: 0 0 18px; color: var(--muted); max-width: 60ch; }
.crumbs { font-size: 0.95rem; margin: 10px 0 0; color: var(--muted); }

/* city picker */
.pick label, .date-pick label { display: block; font-weight: 700; margin-bottom: 6px; }
.date-pick label { display: inline; margin-right: 6px; }
.combo { position: relative; max-width: 460px; }
#city { width: 100%; font: inherit; font-size: 1.1rem; padding: 12px 14px; border: 2px solid var(--field-line); border-radius: var(--radius); background: var(--surface); color: var(--ink); min-height: 50px; }
#city:focus { border-color: var(--focus); outline: none; box-shadow: 0 0 0 3px color-mix(in srgb, var(--focus) 30%, transparent); }
#city-list { position: absolute; z-index: 4; left: 0; right: 0; top: calc(100% + 4px); margin: 0; padding: 4px 0; list-style: none; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 8px 24px rgb(0 0 0 / 0.16); max-height: 340px; overflow-y: auto; }
#city-list li { padding: 10px 14px; cursor: pointer; min-height: 44px; }
#city-list li small { color: var(--muted); font-size: 0.9rem; }
#city-list li[aria-selected="true"] { background: color-mix(in srgb, var(--sun) 45%, var(--surface)); }
#city-list li.none { color: var(--muted); cursor: default; }
.hint { color: var(--muted); font-size: 0.95rem; margin: 6px 0 0; }
.locate { margin: 4px 0 0; display: flex; flex-wrap: wrap; align-items: center; column-gap: 10px; }
.locate .hint { margin: 0; }
.locate[hidden], #locate-msg:empty { display: none; }
.locate:not([hidden]) + .hint { margin-top: 2px; }
#locate-msg { flex-basis: 100%; color: var(--ink); }
.link-btn:disabled { color: var(--muted); cursor: progress; }

/* the answer */
.result { min-height: 420px; margin-top: 18px; }
.answer { background: var(--sun); color: var(--sun-ink); border-radius: var(--radius); padding: 20px 22px 18px; }
.answer .lead { margin: 0; font-size: 1.15rem; font-weight: 600; }
.answer .lead.after { margin-top: 2px; }
.answer .big { margin: 2px 0 0; font: 800 clamp(2.4rem, 9vw, 3.6rem)/1.05 var(--num); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.stats { display: grid; grid-template-columns: repeat(4, auto); justify-content: start; gap: 6px 28px; margin: 18px 0 0; padding-top: 14px; border-top: 2px solid rgb(16 23 25 / 0.18); }
.stats div { margin: 0; }
.stats dt { font-size: 0.9rem; font-weight: 600; opacity: 0.85; }
.stats dd { margin: 0; font-size: 1.15rem; font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; }
.stats dd small { font-weight: 500; font-size: 0.85rem; }
.daily { margin: 12px 0 0; font-weight: 600; }
.error { padding: 16px; border-left: 4px solid var(--sun-line); background: var(--surface); }

.more { margin-top: 8px; }
h2.sub { font-size: 1.15rem; margin: 22px 0 6px; letter-spacing: -0.01em; }
.coming { list-style: none; margin: 0; padding: 0; }
.coming li { display: grid; grid-template-columns: 4.6em 1fr auto; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.coming .when { font-weight: 700; font-variant-numeric: tabular-nums; }
.coming .in { color: var(--muted); font-size: 0.95rem; white-space: nowrap; }
.winter-list { margin: 0; display: grid; gap: 4px; }
.winter-list div { display: grid; grid-template-columns: 9em 1fr; gap: 12px; padding: 6px 0; }
.winter-list dt { color: var(--muted); }
.winter-list dd { margin: 0; font-weight: 600; }
.aside { color: var(--muted); font-size: 0.95rem; margin: 8px 0 0; }

/* chart */
.chart-wrap { margin: 26px 0 0; }
.chart-wrap figcaption { font-weight: 700; margin-bottom: 6px; }
.chart-box { position: relative; }
#chart { width: 100%; height: auto; display: block; touch-action: pan-y; overflow: visible; }
#chart .grid { stroke: var(--grid); stroke-width: 1; }
#chart .ylab, #chart .xlab { fill: var(--muted); font: 12px var(--font); }
#chart .ylab { text-anchor: end; }
#chart .tick { stroke: var(--field-line); }
#chart .area { fill: var(--sun); opacity: 0.55; }
#chart .line { fill: none; stroke: var(--sun-line); stroke-width: 2; stroke-linejoin: round; }
#chart .today { stroke: var(--ink); stroke-width: 1.5; stroke-dasharray: 3 3; }
#chart .dot { fill: var(--ink); stroke: var(--bg); stroke-width: 2; }
#chart .note { fill: var(--muted); font: 12px var(--font); }
#chart .note.strong { fill: var(--ink); font-weight: 700; font-size: 13px; paint-order: stroke; stroke: var(--bg); stroke-width: 4px; stroke-linejoin: round; }
#chart .cross { stroke: var(--muted); stroke-width: 1; }
#chart .hdot { fill: var(--sun-line); stroke: var(--bg); stroke-width: 2; }
.tip { position: absolute; top: -6px; background: var(--ink); color: var(--bg); font-size: 0.9rem; font-weight: 600; padding: 4px 8px; border-radius: 4px; pointer-events: none; white-space: nowrap; }
.table-view { margin-top: 8px; }
.table-view summary, .date-pick summary { cursor: pointer; color: var(--link); min-height: 44px; display: inline-flex; align-items: center; }
table { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 7px 10px 7px 0; border-bottom: 1px solid var(--line); }
th { font-size: 0.95rem; }

.tools-row { margin-top: 14px; display: flex; flex-wrap: wrap; align-items: center; gap: 4px 18px; }
.date-pick[open] { flex-basis: 100%; }
#date { font: inherit; font-size: 16px; padding: 8px 10px; border: 2px solid var(--field-line); border-radius: var(--radius); background: var(--surface); color: var(--ink); min-height: 44px; }
button { font: inherit; }
#today { margin-left: 8px; min-height: 44px; padding: 8px 14px; border: 2px solid var(--ink); background: transparent; color: var(--ink); border-radius: var(--radius); cursor: pointer; }
.link-btn { background: none; border: 0; padding: 0; color: var(--link); text-decoration: underline; text-underline-offset: 2px; cursor: pointer; min-height: 44px; }

/* reading content */
.content { margin-top: 44px; padding-top: 8px; border-top: 1px solid var(--line); }
.content h2 { font-size: 1.45rem; line-height: 1.2; letter-spacing: -0.015em; margin: 30px 0 8px; }
.content p { max-width: 68ch; }
.faq h3 { font-size: 1.08rem; margin: 22px 0 4px; }
.faq p { margin: 0; }
.city-links { columns: 3 11em; column-gap: 24px; padding: 0; list-style: none; margin: 8px 0 0; }
.city-links li { break-inside: avoid; padding: 3px 0; }
.city-links a { display: inline-block; min-height: 32px; padding: 4px 0; }
.city-group { font-size: 1rem; margin: 18px 0 0; color: var(--muted); }
.sources { color: var(--muted); font-size: 0.95rem; margin-top: 30px; }
.season-table { margin-top: 10px; }
.season-table td { white-space: nowrap; }
.table-scroll { overflow-x: auto; }

footer { margin-top: 48px; padding-bottom: 40px; color: var(--muted); font-size: 0.95rem; }

@media (max-width: 560px) {
  body { font-size: 16.5px; }
  .wrap { padding: 0 16px; }
  .stats { grid-template-columns: repeat(2, auto); gap: 10px 28px; }
  .answer { padding: 18px 16px 16px; }
  .coming li { grid-template-columns: 4.2em 1fr; }
  .coming .in { grid-column: 2; margin-top: -6px; }
  .winter-list div { grid-template-columns: 1fr; gap: 0; }
  th, td { padding-right: 6px; font-size: 0.95rem; }
  .city-links { columns: 2; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }