/* Sort five SRT-32. Instrument Sheet chassis, accent #2A4E9A (cobalt). */
:root{
  --paper:#EDE9E2;
  --ink:#1E1D1B;
  --panel:#DEDACF;
  --line:#B7B0A2;
  --chassis:#2A2924;
  --accent:#2A4E9A;
  --on-accent:#EDE9E2;          /* paper on cobalt is 6.8:1, so type on the accent is always the light stock */
  --font-ui:"Familjen Grotesk",system-ui,sans-serif;
  --font-spec:"Martian Mono",ui-monospace,monospace;
  --ease:cubic-bezier(.2,.8,.2,1);
  --card-h:72px;
  --gap:8px;
  --rail-w:112px;
}
@media (prefers-color-scheme:dark){
  :root{--paper:#1E1D1B;--ink:#EDE9E2;--panel:#2A2924;--line:#4A473F;--chassis:#111}
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-ui);font-size:1rem;line-height:1.55;overflow-x:hidden}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
button{font:inherit;color:inherit}
h1,h2,h3,p,dl,dd,ol,ul,figure,pre{margin:0}
[hidden]{display:none!important}

/* label strip */
.strip{max-width:1120px;margin:0 auto;padding:18px 32px 0;display:flex;justify-content:space-between;align-items:baseline;font-family:var(--font-spec);font-size:.75rem;font-weight:500;letter-spacing:.02em;border-bottom:1px solid var(--line)}
.strip-maker{text-decoration:none;padding-bottom:12px}
.strip-maker:hover{text-decoration:underline;text-underline-offset:3px}
.strip-code{padding-bottom:12px}

/* page */
.wrap{max-width:1120px;margin:0 auto;padding:40px 32px 0}
.title{font-size:4.5rem;font-weight:600;line-height:1;letter-spacing:-.01em;margin-bottom:16px}
.lede{font-size:1.125rem;max-width:56ch;margin-bottom:28px}
.subhead{font-size:1.375rem;font-weight:500;line-height:1.25;margin-bottom:10px}
.section-head{font-size:2rem;font-weight:600;line-height:1.1;margin:40px 0 14px}

/* the hero: a bordered panel with corner ticks, holding the cobalt rail and the five cards */
.hero{position:relative;border:1px solid var(--line);background:var(--panel);padding:28px 32px 30px}
.hero::before,.hero::after,.hero>.ticks::before,.hero>.ticks::after{content:"";position:absolute;width:14px;height:14px;border:0 solid var(--accent);pointer-events:none;z-index:2}
.hero::before{top:-1px;left:-1px;border-top-width:1px;border-left-width:1px}
.hero::after{top:-1px;right:-1px;border-top-width:1px;border-right-width:1px}
.hero>.ticks::before{bottom:-1px;left:-1px;border-bottom-width:1px;border-left-width:1px}
.hero>.ticks::after{bottom:-1px;right:-1px;border-bottom-width:1px;border-right-width:1px}
.hero-top{margin-bottom:20px;max-width:64ch}
.rule{font-size:1.75rem;font-weight:500;line-height:1.2;margin-bottom:6px}
.rule-hint{font-size:.9375rem;opacity:.75}

.board{display:grid;grid-template-columns:var(--rail-w) minmax(0,1fr);align-items:start}
.rail{list-style:none;padding:0;display:grid;grid-auto-rows:var(--card-h);gap:var(--gap);background:var(--accent);color:var(--on-accent);font-size:4rem;font-weight:600;line-height:1;user-select:none}
.rail li{display:flex;align-items:center;padding-left:22px;font-variant-numeric:tabular-nums}
.cards{list-style:none;padding:0;display:grid;grid-auto-rows:var(--card-h);gap:var(--gap);min-width:0}

/* one card */
.card{position:relative;display:grid;grid-template-columns:48px minmax(0,1fr) auto auto;align-items:center;height:var(--card-h);background:var(--paper);border:1px solid var(--line);border-left:0;min-width:0;will-change:transform}
.card:focus-visible{outline:2px solid var(--accent);outline-offset:-3px}
.grip{display:flex;align-items:center;justify-content:center;height:100%;cursor:grab;touch-action:none;color:var(--ink);border-right:1px solid var(--line);user-select:none;-webkit-user-select:none}
.grip svg{width:20px;height:26px;stroke:currentColor;stroke-width:1.5;fill:none;pointer-events:none}
.card-text{min-width:0;padding:0 16px}
.card-name{display:block;font-size:1.25rem;font-weight:500;line-height:1.2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card-sub{display:block;font-size:.9375rem;line-height:1.25;opacity:.72;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}
.card-val{display:none;padding:0 16px 0 8px;font-size:1.375rem;font-weight:600;line-height:1;white-space:nowrap;font-variant-numeric:tabular-nums;text-align:right}
.card-was{display:block;font-size:.8125rem;font-weight:400;opacity:.75;margin-top:4px}
.card-val small{font-size:.875rem;font-weight:500;margin-left:4px}
.card-nav{display:grid;grid-template-rows:1fr 1fr;height:100%;border-left:1px solid var(--line)}
.card-nav button{width:40px;border:0;background:transparent;padding:0;cursor:pointer;display:flex;align-items:center;justify-content:center;border-radius:0}
.card-nav button+button{border-top:1px solid var(--line)}
.card-nav button:hover{background:var(--panel)}
.card-nav button:disabled{opacity:.3;cursor:default}
.card-nav button:focus-visible{outline-offset:-3px}
.card-nav svg{width:14px;height:14px;stroke:currentColor;stroke-width:1.5;fill:none}

/* dragging: the card lifts, the others slide aside (JS sets the transforms) */
.card.is-drag{z-index:3;border-color:var(--ink);border-left:1px solid var(--ink);cursor:grabbing}
.card.is-drag .grip{cursor:grabbing}
.card.is-move{transition:transform .2s var(--ease)}
.card.is-settle{transition:transform .16s var(--ease)}
.cards.is-flip .card{transition:transform .32s var(--ease)}

/* revealed: right fills cobalt and fuses with the rail, close gets a type-drawn hatch, wrong stays paper */
.hero.is-revealed .card-val{display:block}
.hero.is-revealed .grip{cursor:default;border-right-color:transparent}
.hero.is-revealed .card-nav{display:none}
.hero.is-revealed .card{grid-template-columns:48px minmax(0,1fr) auto}
.card.is-right{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}
.card.is-right .grip{color:var(--on-accent)}
.card.is-right .card-sub,.card.is-right .card-was{opacity:.85}
.card.is-right:focus-visible{outline-color:var(--on-accent);outline-offset:-4px}
.card.is-close::after{content:"/ / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / /";position:absolute;left:0;right:0;bottom:0;height:12px;line-height:12px;overflow:hidden;white-space:nowrap;font-family:var(--font-spec);font-size:.625rem;font-weight:500;color:var(--accent);pointer-events:none}
body[data-mode=practice] .stats{display:none}

.live{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* buttons */
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.hero-actions{margin-top:20px}
.btn{position:relative;display:inline-block;padding:12px 18px;border:1px solid var(--ink);background:var(--paper);color:var(--ink);font-weight:500;line-height:1.2;cursor:pointer;border-radius:0;text-decoration:none}
.btn:hover{background:var(--panel)}
.btn:disabled{opacity:.45;cursor:default}
.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.btn-primary:hover{background:var(--accent)}
.btn-primary .ticks{position:absolute;inset:0;pointer-events:none}
.btn-primary::before,.btn-primary::after,.btn-primary .ticks::before,.btn-primary .ticks::after{content:"";position:absolute;width:14px;height:14px;border:0 solid var(--accent);opacity:0;pointer-events:none}
.btn-primary::before{top:-6px;left:-6px;border-top-width:1px;border-left-width:1px}
.btn-primary::after{top:-6px;right:-6px;border-top-width:1px;border-right-width:1px}
.btn-primary .ticks::before{bottom:-6px;left:-6px;border-bottom-width:1px;border-left-width:1px}
.btn-primary .ticks::after{bottom:-6px;right:-6px;border-bottom-width:1px;border-right-width:1px}
.btn-primary:hover::before,.btn-primary:hover::after,.btn-primary:hover .ticks::before,.btn-primary:hover .ticks::after,
.btn-primary:focus-visible::before,.btn-primary:focus-visible::after,.btn-primary:focus-visible .ticks::before,.btn-primary:focus-visible .ticks::after{opacity:1}
.btn-primary:focus-visible{outline-offset:4px}
.btn-inv{background:transparent}
.btn.is-done{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* reading line */
.reading{font-family:var(--font-spec);font-size:.75rem;font-weight:500;letter-spacing:.02em;white-space:pre;margin:12px 0 0;overflow:hidden;text-overflow:ellipsis}

/* result: the score, enormous */
.result{display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px 40px;align-items:start;margin-top:28px;padding:24px 0 28px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.result-score{display:flex;align-items:baseline;gap:14px}
.score-num{font-size:7rem;font-weight:600;line-height:.9;letter-spacing:-.03em;color:var(--accent);font-variant-numeric:tabular-nums}
.score-of{font-size:1.125rem;font-weight:500;max-width:7ch;line-height:1.2}
.result-body{min-width:0;padding-top:6px}
.result-note{max-width:60ch;margin-bottom:16px}
.share-fallback{font-family:var(--font-spec);font-size:.75rem;margin-top:12px;white-space:pre-wrap;word-break:break-all;max-width:60ch;border:1px solid var(--line);padding:10px 12px;background:var(--panel)}
.countdown{margin-top:14px;font-size:1rem}
.countdown b{font-weight:600;font-variant-numeric:tabular-nums}

/* record */
.panel{position:relative;border:1px solid var(--line);background:var(--panel);padding:24px 32px 28px}
.stats{margin-top:28px}
.stats-note{font-size:.9375rem;max-width:60ch;margin-bottom:18px}
.stats-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px 24px;max-width:640px;margin-bottom:20px}
.stats-row dt{font-size:.9375rem}
.stats-row dd{font-size:2.25rem;font-weight:600;line-height:1;font-variant-numeric:tabular-nums}
.dist{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:6px 12px;align-items:center;max-width:640px}
.dist .d-lab{font-size:.9375rem;font-variant-numeric:tabular-nums;min-width:1.5em}
.dist .d-bar{height:14px;background:var(--ink);min-width:0;transition:width .3s var(--ease)}
.dist .d-bar.is-today{background:var(--accent)}
.dist .d-n{font-size:.9375rem;font-variant-numeric:tabular-nums;min-width:2ch;text-align:right}

/* notes */
.notes{display:grid;grid-template-columns:repeat(12,minmax(0,1fr))}
.notes>*{grid-column:span 8}
.notes p{max-width:68ch;margin-bottom:14px}

.foot{max-width:1120px;margin:0 auto;padding:20px 32px 40px;font-size:.875rem;opacity:.8}
.foot p{max-width:70ch}

/* narrower screens */
@media (max-width:900px){
  .notes>*{grid-column:span 12}
  .score-num{font-size:5.5rem}
}
@media (max-width:640px){
  :root{--card-h:64px;--gap:6px;--rail-w:44px}
  .strip{padding:14px 16px 0}
  .wrap{padding:28px 16px 0}
  .title{font-size:2.75rem}
  .lede{font-size:1rem}
  .hero{padding:18px 14px 20px}
  .rule{font-size:1.375rem}
  .rule-hint{display:none}
  .rail{font-size:1.75rem}
  .rail li{padding-left:0;justify-content:center}
  .card{grid-template-columns:40px minmax(0,1fr) auto auto}
  .card-text{padding:0 10px}
  .card-name{font-size:1.0625rem}
  .card-sub{font-size:.8125rem}
  .card-val{font-size:1.125rem;padding:0 10px 0 4px}
  .card-val small{font-size:.75rem}
  .card-nav button{width:36px}
  .hero.is-revealed .card{grid-template-columns:40px minmax(0,1fr) auto}
  .result{grid-template-columns:1fr;gap:10px}
  .score-num{font-size:5rem}
  .panel{padding:20px 16px 22px}
  .stats-row{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats-row dd{font-size:1.75rem}
  .section-head{font-size:1.625rem}
  .foot{padding:16px 16px 32px}
}

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