/* Pricier. Layout: one narrow centred column, like a receipt; the yellow price tag is the only loud colour. */
@font-face { font-family: "Bricolage"; src: url("fonts/bricolage.woff") format("woff"); font-weight: 800; font-display: swap; }
@font-face { font-family: "Figtree"; src: url("fonts/figtree.woff") format("woff"); font-weight: 300 900; font-display: swap; }

:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --ink: #152238;
  --muted: #5b6577;
  --border: #dce1e8;
  --tag: #ffc53d;          /* brand yellow */
  --tag-ink: #152238;      /* text on the tag */
  --sel: #3b6fe0;
  --g: #2e9d5b;
  --y: #d99a14;
  --r: #d64541;
  --g-soft: rgba(46, 157, 91, 0.12);
  --bar: rgba(21, 34, 56, 0.07);
  --shadow: 0 1px 2px rgba(21, 34, 56, 0.06), 0 6px 18px rgba(21, 34, 56, 0.06);
  --backdrop: rgba(21, 34, 56, 0.5);
  --font-display: "Bricolage", "Arial Black", system-ui, sans-serif;
  --font-body: "Figtree", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --radius: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1524; --surface: #172238; --ink: #eef2f8; --muted: #97a3b8; --border: #26324a;
    --sel: #7aa2ff; --g: #3fbf7f; --y: #f0b429; --r: #ef6b62;
    --g-soft: rgba(63, 191, 127, 0.14); --bar: rgba(238, 242, 248, 0.07);
    --shadow: none; --backdrop: rgba(0, 0, 0, 0.6);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0e1524; --surface: #172238; --ink: #eef2f8; --muted: #97a3b8; --border: #26324a;
  --sel: #7aa2ff; --g: #3fbf7f; --y: #f0b429; --r: #ef6b62;
  --g-soft: rgba(63, 191, 127, 0.14); --bar: rgba(238, 242, 248, 0.07);
  --shadow: none; --backdrop: rgba(0, 0, 0, 0.6);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  padding-inline: 16px;
}
button { font: inherit; color: inherit; cursor: pointer; }
:focus-visible { outline: 3px solid var(--sel); outline-offset: 2px; }
a { color: inherit; }

/* Header */
.top {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 460px; margin: 0 auto; padding-block: 14px 4px;
}
.brand { display: flex; align-items: center; gap: 8px; text-decoration: none; }
.brand img { width: 32px; height: 32px; }
.logo { margin: 0; font-family: var(--font-display); font-weight: 800; font-size: 1.65rem; letter-spacing: -0.03em; }
.icon-btn {
  width: 40px; height: 40px; border-radius: 50%;
  border: 1px solid var(--border); background: var(--surface);
  font-weight: 800; display: grid; place-items: center;
}

main { max-width: 460px; margin: 0 auto; padding-block: 0 24px; }

/* Puzzle header */
.puzzle-head { text-align: center; padding-block: 10px 8px; }
.puzzle-no {
  display: inline-block; margin: 0; padding: 3px 10px 3px 14px;
  background: var(--tag); color: var(--tag-ink);
  font-size: 0.78rem; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase;
  clip-path: polygon(8px 0, 100% 0, 100% 100%, 8px 100%, 0 50%);
  border-radius: 0 4px 4px 0;
}
.item-emoji { font-size: 3.2rem; line-height: 1.15; margin-top: 8px; }
.item-name { margin: 2px 0 0; font-family: var(--font-display); font-weight: 800; font-size: 2rem; letter-spacing: -0.03em; text-wrap: balance; }
.item-detail { margin: 4px 0 0; color: var(--muted); }

.axis { margin: 12px 4px 6px; font-size: 0.75rem; font-weight: 800; color: var(--muted); letter-spacing: 0.08em; text-transform: uppercase; }

/* Board */
.board { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.card {
  position: relative; width: 100%;
  display: grid; grid-template-columns: 22px 34px minmax(0, 1fr) auto; align-items: center; gap: 8px;
  min-height: 58px; padding: 8px 14px;
  background: var(--surface); color: var(--ink);
  border: 2px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); text-align: left; overflow: hidden;
  transition: transform 0.12s ease, border-color 0.12s ease;
}
.card:active { transform: scale(0.98); }
.board .card:not(.locked) { touch-action: none; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
.board.is-dragging .card { transition: transform 0.16s ease; }
.board.is-dragging .card.dragging { transition: none; z-index: 5; border-color: var(--sel); box-shadow: 0 12px 28px rgba(21, 34, 56, 0.22); cursor: grabbing; }
@media (hover: hover) { .board .card:not(.locked) { cursor: grab; } }
.card .rank { color: var(--muted); font-weight: 800; font-variant-numeric: tabular-nums; }
.card .flag { font-size: 1.6rem; line-height: 1; }
.card .name { font-weight: 700; font-size: 1.05rem; min-width: 0; overflow-wrap: anywhere; }
.card .tag { font-size: 0.8rem; font-weight: 800; }
.card .price { font-weight: 800; font-variant-numeric: tabular-nums; }
.card.selected { border-color: var(--sel); transform: scale(1.02); }
.card.fb-g, .card.locked { border-color: var(--g); background: linear-gradient(var(--g-soft), var(--g-soft)), var(--surface); cursor: default; }
.card.fb-y { border-color: var(--y); }
.card.fb-r { border-color: var(--r); }
.card.fb-g .tag { color: var(--g); }
.card.fb-y .tag { color: var(--y); }
.card.fb-r .tag { color: var(--r); }
.card.shake { animation: shake 0.3s; }
@keyframes shake { 25% { transform: translateX(-4px); } 75% { transform: translateX(4px); } }
.board li { position: relative; }
.card .bar { position: absolute; inset: 0 auto 0 0; background: var(--bar); z-index: 0; transition: width 0.6s ease; }
.card > *:not(.bar) { position: relative; z-index: 1; }

/* History */
.history { display: grid; gap: 4px; justify-content: center; margin: 16px 0 4px; font-size: 1.3rem; letter-spacing: 2px; }

/* Controls */
.controls { text-align: center; }
.hint { color: var(--muted); margin: 10px 0 12px; min-height: 1.3em; }
.primary {
  width: 100%; padding: 15px 18px; border: none; border-radius: 999px;
  background: var(--tag); color: var(--tag-ink);
  font-family: var(--font-display); font-weight: 800; font-size: 1.1rem; letter-spacing: -0.01em;
}
.primary:active { transform: translateY(1px); }

/* Result */
.result { text-align: center; margin-top: 18px; }
.result-title { font-family: var(--font-display); font-weight: 800; font-size: 1.6rem; letter-spacing: -0.02em; margin: 0 0 10px; text-wrap: balance; }
.fun-fact {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px; margin: 0 0 16px; line-height: 1.5; text-align: left;
}
.next { color: var(--muted); margin: 14px 0 4px; }
.next strong { color: var(--ink); font-variant-numeric: tabular-nums; }
.source { color: var(--muted); font-size: 0.8rem; margin: 6px 0 0; }
.hidden { display: none !important; }

/* Footer */
.foot { max-width: 460px; margin: 0 auto; padding-block: 8px 28px; text-align: center; font-size: 0.85rem; color: var(--muted); display: flex; justify-content: center; gap: 16px; }

/* Dialogs */
dialog {
  width: min(92vw, 420px); border: 1px solid var(--border); border-radius: 20px;
  background: var(--surface); color: var(--ink); padding: 22px 22px 20px;
}
dialog::backdrop { background: var(--backdrop); }
dialog h3 { margin: 0 0 12px; font-family: var(--font-display); font-weight: 800; font-size: 1.45rem; letter-spacing: -0.02em; }
dialog h4 { margin: 18px 0 8px; }
dialog p { line-height: 1.5; }
.close { position: absolute; top: 10px; right: 12px; background: none; border: none; font-size: 1.6rem; color: var(--muted); }
.legend { list-style: none; padding: 0; margin: 12px 0; display: grid; gap: 8px; }
.legend li { display: flex; align-items: center; gap: 10px; }
.sq { width: 22px; height: 22px; border-radius: 5px; flex: none; }
.sq.g { background: var(--g); } .sq.y { background: var(--y); } .sq.r { background: var(--r); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); text-align: center; gap: 4px; }
.stats-grid strong { display: block; font-family: var(--font-display); font-weight: 800; font-size: 1.7rem; }
.stats-grid span { font-size: 0.75rem; color: var(--muted); }
.dist { display: grid; gap: 6px; }
.dist-row { display: grid; grid-template-columns: 16px 1fr; gap: 8px; align-items: center; font-weight: 700; }
.dist-bar { background: var(--border); border-radius: 6px; padding: 3px 8px; text-align: right; min-width: 28px; font-size: 0.85rem; }
.dist-bar.current { background: var(--g); color: var(--surface); }

/* Toast */
.toast {
  position: fixed; left: 50%; top: calc(env(safe-area-inset-top, 0px) + 20px);
  transform: translate(-50%, -20px);
  background: var(--ink); color: var(--bg);
  padding: 10px 16px; border-radius: 10px; font-weight: 700;
  opacity: 0; pointer-events: none; transition: all 0.2s ease;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* About page */
.page { max-width: 640px; margin: 0 auto; padding-block: 8px 48px; line-height: 1.6; }
.page h1 { font-family: var(--font-display); font-weight: 800; font-size: 2.2rem; letter-spacing: -0.03em; margin: 12px 0 8px; text-wrap: balance; }
.page h2 { font-family: var(--font-display); font-weight: 800; font-size: 1.3rem; letter-spacing: -0.02em; margin: 32px 0 6px; }
.page p, .page li { color: var(--ink); }
.page .lede { font-size: 1.1rem; color: var(--muted); }
.page ul { padding-left: 20px; }
.page .back { display: inline-block; margin-top: 28px; }
.src-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.src-table th, .src-table td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); vertical-align: top; }
.src-table th { font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.table-wrap { overflow-x: auto; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}