/* Bowling Score Practice: a league score sheet on a maple lane. Warm maple ground, cream sheets ruled in deep navy
   like a printed scorecard, rounded bold marks as a scorer writes them, and a lane-red accent (the stripes on a
   pin) for actions and game numbers. On paper: black rules on white, nothing that needs background printing. */
:root {
  --bg: #f4ecdc;
  --paper: #fffdf7;
  --ink: #1b2440;
  --muted: #4f566b;
  --line: #ddd0b6;
  --edge: #8b8170;
  --grid: #1b2440;
  --cell: #fffdf7;
  --accent: #b3261e;
  --accent-ink: #ffffff;
  --accent-soft: #f8e3df;
  --info: #1d4f9b;
  --ok: #17693c;
  --ok-soft: #dcefe2;
  --close: #7a5200;
  --close-soft: #f6ecd2;
  --bad: #a3241d;
  --bad-soft: #f9e1dd;
  --focus: #1b5fd0;
  --head: Futura, "Century Gothic", "Avenir Next", "Trebuchet MS", system-ui, sans-serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mark: ui-rounded, "SF Pro Rounded", "Arial Rounded MT Bold", "Trebuchet MS", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "DejaVu Sans Mono", monospace;
  --r: 6px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151b2c;
    --paper: #1e263b;
    --ink: #ece5d6;
    --muted: #aeb3c2;
    --line: #313b55;
    --edge: #69728a;
    --grid: #c9bfa9;
    --cell: #232c44;
    --accent: #f08a7f;
    --accent-ink: #2a0d0a;
    --accent-soft: #3d2023;
    --info: #9cc0f2;
    --ok: #8adca6;
    --ok-soft: #173424;
    --close: #f0c56b;
    --close-soft: #382d14;
    --bad: #ff9c8f;
    --bad-soft: #3e1f1d;
    --focus: #8ab8ff;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.55 var(--sans); }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
a { color: var(--info); text-underline-offset: 2px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--paper); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
h1, h2, h3 { font-family: var(--head); line-height: 1.15; font-weight: 700; }
.hero { padding: 22px 0 12px; border-bottom: 3px solid var(--accent); margin-bottom: 14px; }
.hero h1 { font-size: clamp(30px, 6vw, 44px); margin: 0 0 6px; letter-spacing: -0.01em; }
.lede { margin: 0; max-width: 64ch; color: var(--muted); }

/* ---------- controls ---------- */
.tool { display: grid; gap: 12px; }
.setup { display: grid; gap: 10px; }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.seg { display: inline-grid; grid-template-columns: 1fr 1fr; border: 2px solid var(--grid); border-radius: var(--r); overflow: hidden; max-width: 100%; }
.sg { position: relative; display: block; min-width: 0; }
.sg + .sg { border-left: 2px solid var(--grid); }
.sg input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.sg span { display: flex; align-items: center; justify-content: center; text-align: center; min-height: 44px; padding: 4px 16px; font-weight: 600; font-size: 16px; line-height: 1.15; background: var(--paper); }
.sg input:checked + span { background: var(--grid); color: var(--paper); }
.sg input:focus-visible + span { outline: 3px solid var(--focus); outline-offset: -4px; }
.setrow { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: center; }
.setrow label { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; }
select, input { font: inherit; font-size: 16px; color: var(--ink); background: var(--paper); border: 1px solid var(--edge); border-radius: var(--r); min-height: 44px; padding: 6px 10px; }
.lv select { max-width: min(62vw, 260px); }
.btn { font: 600 16px var(--sans); min-height: 44px; padding: 8px 16px; border-radius: var(--r); border: 1px solid var(--edge); background: var(--paper); color: var(--ink); cursor: pointer; }
.btn:hover { border-color: var(--ink); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.small { min-height: 42px; padding: 6px 14px; font-size: 15px; }
.link { font: inherit; background: none; border: 0; color: var(--info); text-decoration: underline; text-underline-offset: 2px; cursor: pointer; min-height: 44px; padding: 0 4px; }

/* ---------- scoring rules ---------- */
.rules { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.rules summary { cursor: pointer; font-weight: 600; min-height: 44px; display: flex; align-items: center; }
.rules-in { display: flex; flex-wrap: wrap; gap: 6px 22px; align-items: flex-start; padding-bottom: 10px; }
.rl { flex: 1 1 320px; margin: 0; padding-left: 20px; font-size: 15.5px; line-height: 1.45; }
.rl li { margin: 0 0 6px; }
.rl .src { color: var(--muted); font-size: 14px; white-space: nowrap; }
svg.deck { flex: none; }
svg.deck circle { fill: var(--paper); stroke: var(--ink); stroke-width: 1.6; }
svg.deck text { fill: var(--ink); font: 700 12px var(--sans); }

/* ---------- the games ---------- */
.note { margin: 0 0 10px; padding: 10px 12px; border: 1px solid var(--bad); background: var(--bad-soft); border-radius: var(--r); font-size: 16px; overflow-wrap: anywhere; }
.note.info { border-color: var(--info); background: var(--paper); }
.sheet:focus { outline: none; }
.sheet-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 4px 14px; }
.sheet-head h2 { font-size: 24px; margin: 4px 0 0; }
.code { font-family: var(--mono); letter-spacing: 0.06em; }
.score { margin: 0; color: var(--muted); font-size: 15px; }
.sline { margin: 2px 0 10px; color: var(--muted); font-size: 14.5px; }
.qs { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; }
.q { background: var(--paper); border: 1px solid var(--line); border-radius: var(--r); padding: 10px 14px 12px; min-width: 0; }
.q h3 { margin: 0; font-size: 20px; display: flex; align-items: center; gap: 10px; }
.qn { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--grid); color: var(--paper); font: 700 15px var(--sans); flex: none; }
.scen { margin: 4px 0 10px; max-width: 75ch; color: var(--muted); }
.fig { min-width: 0; }

/* the score sheet: ten frames, number strip, mark boxes, total box */
.ss { display: grid; grid-template-columns: repeat(9, minmax(0, 1fr)) minmax(0, 1.42fr); border: 2px solid var(--grid); background: var(--cell); max-width: 900px; }
.fr { border-left: 1px solid var(--grid); display: grid; grid-template-rows: auto auto 1fr; min-width: 0; }
.fr:first-child { border-left: 0; }
.fn { text-align: center; font: 700 12.5px/1 var(--sans); padding: 4px 0; border-bottom: 1px solid var(--grid); color: var(--muted); }
.bx { display: flex; justify-content: flex-end; height: 30px; }
.b { width: 50%; max-width: 30px; display: grid; place-items: center; font: 700 17px/1 var(--mark); color: var(--ink); }
.b:last-child { border-left: 1px solid var(--grid); border-bottom: 1px solid var(--grid); }
.f10 .b { width: 33.4%; max-width: 30px; border-left: 1px solid var(--grid); border-bottom: 1px solid var(--grid); }
.b.split i { font-style: normal; display: grid; place-items: center; width: 24px; height: 24px; border: 1.6px solid currentColor; border-radius: 50%; }
.tt { min-height: 44px; display: grid; place-items: center; align-content: center; padding: 2px 0; }
.tv { font: 700 18px/1.1 var(--mark); color: var(--ink); }
.tv.wait { color: var(--muted); }
.sum { display: block; font: 12.5px/1.2 var(--sans); color: var(--muted); text-align: center; overflow-wrap: anywhere; }
.was { color: var(--bad); font: 15px var(--mark); margin-right: 4px; }
.key .tt { min-height: 52px; }
input.ti, input.mi { width: 100%; min-width: 0; border: 0; border-radius: 0; background: transparent; text-align: center; padding: 0 2px; font: 700 18px var(--mark); color: var(--ink); min-height: 44px; }
input.mi { min-height: 38px; height: 100%; font-size: 17px; letter-spacing: 0.04em; text-transform: uppercase; }
.bx.in { height: auto; border-bottom: 1px solid var(--grid); }
.marking .tt { min-height: 14px; }
input.ti:focus, input.mi:focus { outline: 3px solid var(--focus); outline-offset: -3px; background: var(--paper); }
input.is-right { background: var(--ok-soft); color: var(--ok); }
input.is-wrong { background: var(--bad-soft); color: var(--bad); }
input.is-close, input.is-unread { background: var(--close-soft); color: var(--close); }
.story { margin: 0 0 10px; padding-left: 26px; columns: 2 320px; column-gap: 28px; font-size: 15.5px; line-height: 1.4; }
.story li { margin: 0 0 4px; break-inside: avoid; }
.story li::marker { font-weight: 700; color: var(--muted); }
.mk { font-family: var(--mark); font-weight: 700; }

/* answer boxes below the sheet, and feedback */
.qparts { display: grid; gap: 10px; margin-top: 10px; }
.part { border: 0; margin: 0; padding: 0; min-width: 0; }
.part .prompt, .part legend { display: block; font-weight: 600; font-size: 16px; line-height: 1.3; margin-bottom: 4px; }
.part input.pin { width: 7em; font: 700 18px var(--mark); text-align: center; }
.part.is-right input.pin { border-color: var(--ok); background: var(--ok-soft); }
.part.is-wrong input.pin { border-color: var(--bad); background: var(--bad-soft); }
.part.is-close input.pin, .part.is-unread input.pin { border-color: var(--close); background: var(--close-soft); }
.opts { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 6px; }
.opt { display: flex; align-items: center; gap: 10px; min-height: 44px; padding: 6px 10px; border: 1px solid var(--line); border-radius: var(--r); cursor: pointer; }
.opt input { width: 20px; height: 20px; min-height: 0; margin: 0; accent-color: var(--accent); flex: none; }
.opt .mk { font-size: 18px; letter-spacing: 0.08em; }
.fbwrap:empty { display: none; }
.fig .fbwrap { margin-top: 6px; }
.fb { margin: 4px 0 0; font-size: 15px; line-height: 1.4; padding: 4px 8px; border-radius: var(--r); }
.fb.right { color: var(--ok); background: var(--ok-soft); }
.fb.wrong { color: var(--bad); background: var(--bad-soft); }
.fb.close, .fb.unread { color: var(--close); background: var(--close-soft); }
.qfoot { display: flex; gap: 10px; align-items: center; }
details.work { border-top: 1px dashed var(--line); padding-top: 2px; }
details.work summary { cursor: pointer; color: var(--info); min-height: 44px; display: flex; align-items: center; font-weight: 600; }
.keyfig { margin: 4px 0 8px; }
.ans { margin: 6px 0 2px; }
.steps { margin: 4px 0 4px; padding-left: 20px; color: var(--muted); font-size: 15px; }
.sheet-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; margin: 14px 0 6px; }
.ask { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; background: var(--accent-soft); padding: 6px 10px; border-radius: var(--r); }
.share { margin: 16px 0 6px; padding-top: 12px; border-top: 1px solid var(--line); }
.print-row { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; }
.print-row label { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; }
.print-row select { max-width: 100%; }
.share-out label { display: grid; gap: 4px; font-weight: 600; margin-top: 8px; }
.share-out input { width: 100%; }
.recent { margin-top: 12px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--r); padding: 4px 12px; }
.recent summary { cursor: pointer; min-height: 44px; display: flex; align-items: center; font-weight: 600; }
.recent ul { list-style: none; margin: 0; padding: 0; }
.recent li { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 6px 0; border-top: 1px solid var(--line); }
.recent small { display: block; color: var(--muted); font-size: 14px; }
.hint { color: var(--muted); font-size: 14px; }
.toast { position: fixed; left: 50%; bottom: 16px; transform: translateX(-50%) translateY(150%); background: var(--ink); color: var(--paper); padding: 10px 16px; border-radius: var(--r); max-width: min(92vw, 520px); width: max-content; font-size: 16px; transition: transform 0.2s; z-index: 20; pointer-events: none; }
.toast.on { transform: translateX(-50%) translateY(0); }
@media (prefers-reduced-motion: reduce) { .toast { transition: none; } }

/* ---------- content ---------- */
.content { max-width: 75ch; padding: 26px 0 20px; }
.content h2 { font-size: 25px; margin: 26px 0 6px; }
.levels { padding-left: 24px; }
.levels li { margin-bottom: 4px; }
.faq details { border-top: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 600; padding: 10px 0; min-height: 44px; }
.faq p { margin: 0 0 12px; }
.sources { font-size: 15px; color: var(--muted); }
footer { border-top: 1px solid var(--line); padding: 16px 0 28px; font-size: 15px; color: var(--muted); }
.indep { margin: 0 0 10px; }
.sb-footer p { margin: 6px 0; }
.sb-more { line-height: 1.8; }
.print-root { display: none; }

/* phones: the sheet wraps into two rows of five frames, so every box stays big enough to type in */
@media (max-width: 600px) {
  .ss { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .fr:nth-child(n + 6) { border-top: 2px solid var(--grid); }
  .fr:nth-child(6) { border-left: 0; }
  .q { padding: 8px 10px 10px; }
  .q h3 { font-size: 18px; }
  .hero { padding-top: 14px; }
  .lede { font-size: 16px; }
  .story { font-size: 15px; padding-left: 22px; }
}
@media (max-width: 360px) {
  .sg span { padding: 4px 8px; font-size: 15px; }
  .b { font-size: 15.5px; }
  .b.split i { width: 21px; height: 21px; }
  input.ti, .tv { font-size: 16.5px; }
}

/* ---------- print ---------- */
@media print {
  :root { --ink: #000; --muted: #333; --line: #999; --paper: #fff; --edge: #555; --grid: #000; --cell: #fff; --accent: #000; }
  @page { margin: 12mm 12mm; }
  body { background: #fff; color: #000; font: 10.5pt/1.36 var(--sans); }
  main, footer, .toast, .skip { display: none !important; }
  .print-root { display: block; }
  table.pt { width: 100%; border-collapse: collapse; }
  table.pt > tbody > tr > td, table.pt > thead > tr > td { padding: 0; }
  .prun { font: 8.5pt var(--sans); color: #444; text-align: right; padding-bottom: 5pt !important; }
  .ph { display: flex; justify-content: space-between; align-items: flex-end; gap: 10pt; border-bottom: 2pt solid #000; margin-bottom: 4pt; padding-bottom: 2pt; }
  .ph h2 { font: 700 17pt var(--head); margin: 0; white-space: nowrap; }
  .ph p { margin: 0; font-size: 9pt; text-align: right; }
  .pmeta { display: flex; justify-content: space-between; gap: 12pt; margin: 6pt 0 4pt; }
  .pgs { list-style: none; margin: 0; padding: 0; }
  .pg { padding: 6pt 0 8pt; border-bottom: 0.75pt solid #999; break-inside: avoid; page-break-inside: avoid; }
  .pg h3 { font: 700 12pt var(--head); margin: 0 0 1pt; }
  .pscen { margin: 0 0 4pt; font-size: 10pt; }
  .ss { max-width: none; border: 1.4pt solid #000; }
  .fr { border-left: 0.9pt solid #000; }
  .fn { color: #000; font-size: 8.5pt; padding: 2pt 0; border-bottom: 0.9pt solid #000; }
  .bx { height: 7mm; }
  .b { max-width: 7mm; font-size: 12.5pt; }
  .f10 .b { max-width: 7mm; }
  .b:last-child, .f10 .b { border-left: 0.9pt solid #000; border-bottom: 0.9pt solid #000; }
  .b.split i { width: 5.6mm; height: 5.6mm; border-width: 1pt; }
  .tt { min-height: 11mm; }
  .key .tt { min-height: 11mm; }
  .tv { font-size: 13pt; }
  .sum { font-size: 8pt; color: #333; }
  .was { color: #000; font-size: 9.5pt; }
  .story { columns: 2; column-gap: 8mm; font-size: 10pt; margin: 0 0 4pt; padding-left: 16pt; }
  .story li { margin: 0 0 1pt; }
  .pg-marks .bx { height: 9mm; }
  .pg-marks .b { max-width: 9mm; }
  .pg-marks .f10 .b { max-width: 8mm; }
  .pparts { display: grid; grid-template-columns: 1fr 1fr; gap: 2pt 8mm; font-size: 10pt; margin-top: 5pt; }
  .pparts .pp { break-inside: avoid; }
  .pparts .pp.wide { grid-column: 1 / -1; }
  .pparts .pp p { margin: 0 0 3pt; }
  .popts span { margin-right: 12pt; display: inline-block; }
  .phow { margin: 0 0 2pt; font-size: 10pt; }
  .deckhow { display: flex; align-items: center; gap: 8mm; break-inside: avoid; }
  .deckhow p { margin: 0; max-width: 110mm; }
  svg.pdeck { width: 30mm; height: auto; }
  .pkey { break-before: page; page-break-before: always; }
  .psheet + .psheet { break-before: page; page-break-before: always; }
  .pkey .pg { padding: 4pt 0 6pt; }
  table.pkt { width: 100%; border-collapse: collapse; font-size: 9pt; margin-top: 3pt; table-layout: fixed; }
  table.pkt td { border-top: 0.5pt solid #bbb; padding: 2pt 4pt; vertical-align: top; }
  table.pkt td.pkq { width: 30%; }
  table.pkt td.pka { width: 16%; }
}
@media print {
  /* keys of a class set run on from each other; each set's key keeps its heading with its first game */
  .pkey + .pkey { break-before: auto; page-break-before: auto; margin-top: 8pt; }
  .ph { break-after: avoid; page-break-after: avoid; }
}