/* Tax calculator TAX-10. Instrument Sheet chassis, accent #7A6A2A (olive brass). */
:root{
  --paper:#EDE9E2;
  --ink:#1E1D1B;
  --panel:#DEDACF;
  --line:#B7B0A2;
  --chassis:#2A2924;
  --accent:#7A6A2A;
  --on-accent:#EDE9E2;      /* paper on brass is 4.4:1: fine for large type, so small type on the slab sits on paper tags */
  --slab-paper:#EDE9E2;     /* the paper insets on the slab keep their colour in both schemes */
  --slab-ink:#1E1D1B;
  --slab-panel:#DEDACF;
  --hair:rgba(237,233,226,.3);
  --well:rgba(0,0,0,.18);   /* the empty part of a rung */
  --font-ui:"Familjen Grotesk",system-ui,sans-serif;
  --font-spec:"Martian Mono",ui-monospace,monospace;
  --ease:cubic-bezier(.2,.8,.2,1);
  --pour:.26s;
}
@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,dt,ol,ul,figure,pre,fieldset,blockquote{margin:0}
ol,ul{padding:0;list-style:none}
fieldset{padding:0;border:0;min-width:0}
table{border-collapse:collapse;width:100%}
[hidden]{display:none!important}
code{font-family:var(--font-spec);font-size:.8em}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* 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:60ch;margin-bottom:28px}
.lede strong{font-weight:600}
.section-head{font-size:2rem;font-weight:600;line-height:1.1;margin:0 0 14px}

/* the brass slab: the one accent shape */
.hero{position:relative;background:var(--accent);color:var(--on-accent);padding:36px 40px 40px}
.hero::before,.hero::after,.hero>.ticks::before,.hero>.ticks::after{content:"";position:absolute;width:14px;height:14px;border:0 solid var(--on-accent);pointer-events:none;z-index:2}
.hero::before{top:0;left:0;border-top-width:1px;border-left-width:1px}
.hero::after{top:0;right:0;border-top-width:1px;border-right-width:1px}
.hero>.ticks::before{bottom:0;left:0;border-bottom-width:1px;border-left-width:1px}
.hero>.ticks::after{bottom:0;right:0;border-bottom-width:1px;border-right-width:1px}

/* the readout */
.readout{margin-bottom:28px}
.readout-row{display:flex;align-items:baseline;flex-wrap:wrap;gap:0 .3em;line-height:1}
.rate-big{font-size:clamp(4.5rem,12vw,9.5rem);font-weight:600;letter-spacing:-.04em;font-variant-numeric:tabular-nums;display:inline-block}
.rate-big.is-roll{animation:roll var(--pour) var(--ease) both}
@keyframes roll{0%{transform:translateY(.22em);opacity:.4}100%{transform:none;opacity:1}}
.rate-unit{font-size:clamp(1.375rem,3vw,2.25rem);font-weight:600;letter-spacing:-.01em}
.rate-marg{font-size:clamp(1.375rem,3vw,2.25rem);font-weight:600;letter-spacing:-.01em;margin-left:.6em;padding-left:.6em;border-left:1px solid var(--hair)}
.verdict{font-size:1.5rem;font-weight:500;line-height:1.25;max-width:44ch;margin-top:14px;min-height:1.25em}

/* the deck: inputs left, ladder right */
.deck{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:28px 32px;align-items:start}
.inputs{grid-column:span 5;min-width:0;background:var(--slab-paper);color:var(--slab-ink);padding:22px 22px 20px;display:grid;gap:16px}
.ladder-wrap{grid-column:span 7;min-width:0}

/* inputs */
.row-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.fld{min-width:0}
.fld label,.checks legend{display:block;font-size:.9375rem;font-weight:500;margin-bottom:5px;padding:0}
.help{font-size:.8125rem;line-height:1.4;margin-top:5px;opacity:.78}
.field{display:block;width:100%;font:inherit;font-size:1rem;line-height:1.3;color:var(--slab-ink);background:var(--slab-paper);border:1px solid var(--line);border-radius:0;padding:9px 11px;min-height:42px;color-scheme:light;font-variant-numeric:tabular-nums}
.field::placeholder{color:var(--slab-ink);opacity:.4}
.field:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
select.field{appearance:none;-webkit-appearance:none;padding-right:30px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%231E1D1B' stroke-width='1.5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 11px center;cursor:pointer}
.money{position:relative}
.money-sign{position:absolute;left:11px;top:50%;transform:translateY(-50%);font-weight:500;opacity:.6;pointer-events:none}
.money .field{padding-left:24px}
.checks{display:grid;grid-template-columns:1fr 1fr;gap:6px 14px}
.checks legend{grid-column:1 / -1;margin-bottom:2px}
.checks .check{display:flex;align-items:flex-start;gap:8px;font-size:.9375rem;line-height:1.3;cursor:pointer;min-width:0;margin:0}
.check input{width:18px;height:18px;margin:1px 0 0;accent-color:var(--accent);flex:none}
.check input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.checks .spouse-only{display:none}
.inputs.is-married .spouse-only{display:flex}
.store-note{font-size:.8125rem;line-height:1.4;opacity:.78}

/* buttons */
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:4px}
.btn{position:relative;display:inline-block;padding:12px 18px;border:1px solid var(--slab-ink);background:var(--slab-paper);color:var(--slab-ink);font-weight:500;line-height:1.2;cursor:pointer;border-radius:0;text-decoration:none}
.btn:hover{background:var(--slab-panel)}
.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.btn-primary:hover{background:var(--accent)}
.btn-primary.is-done{background:var(--slab-ink);border-color:var(--slab-ink);color:var(--slab-paper)}
.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-color:var(--accent);outline-offset:4px}
.btn-paper:focus-visible{outline-color:var(--accent)}

/* the ladder */
.ladder-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.ladder-title{font-size:1.375rem;font-weight:600;line-height:1.2}
.ladder-tag,.tag{display:inline-block;font-family:var(--font-spec);font-size:.75rem;letter-spacing:.02em;font-weight:500;background:var(--slab-paper);color:var(--slab-ink);padding:3px 8px;line-height:1.3;white-space:nowrap}
.ladder{table-layout:fixed}
.col-rate{width:64px}
.col-slice{width:118px}
.ladder tr{border-top:1px solid var(--hair)}
.ladder tr:last-child{border-bottom:1px solid var(--hair)}
.ladder td{padding:0;vertical-align:middle;height:58px}
.rung-rate{font-size:1.5rem;font-weight:600;letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1}
.rung-track{position:relative;padding-right:12px}
.well{position:relative;height:30px;background:var(--well)}
.fill{position:absolute;left:0;top:0;bottom:0;width:0;background:var(--slab-paper);transition:width var(--pour) var(--ease);transition-delay:var(--delay,0s)}
.rung-range{position:absolute;right:8px;top:50%;transform:translateY(-50%);font-size:.6875rem;pointer-events:none;background:transparent;color:var(--on-accent);transition:color var(--pour) var(--ease),background-color var(--pour) var(--ease);transition-delay:var(--delay,0s)}
.rung-range.is-on-paper{background:var(--slab-paper);color:var(--slab-ink)}
.rung-range .short{display:none}
.rung-slice{text-align:right;font-family:var(--font-spec);font-size:.75rem;letter-spacing:.02em;font-weight:500;font-variant-numeric:tabular-nums;white-space:nowrap}
.rung-slice .tag{min-width:96px;text-align:right}
tr.is-empty .rung-slice .tag{background:transparent;color:var(--on-accent);opacity:.55;border:1px solid var(--hair)}
.cursor{position:absolute;top:-9px;width:2px;height:48px;background:var(--slab-ink);transform:translateX(-1px);z-index:2;transition:left var(--pour) var(--ease);transition-delay:var(--delay,0s)}
.cursor-flag{position:absolute;left:6px;top:-2px;font-family:var(--font-spec);font-size:.625rem;letter-spacing:.03em;font-weight:500;background:var(--slab-ink);color:var(--slab-paper);padding:2px 6px;white-space:nowrap;line-height:1.3}
.cursor.is-left .cursor-flag{left:auto;right:6px}
.ladder tr.is-total{border-top:2px solid var(--on-accent);border-bottom:0}
.ladder tr.is-total td{height:52px}
.ladder tr.is-total .rung-rate{font-size:1.125rem;font-weight:600;letter-spacing:0;white-space:nowrap}
.ladder tr.is-total .rung-slice .tag{background:var(--slab-ink);color:var(--slab-paper)}
.ladder-foot{font-size:1.125rem;font-weight:500;line-height:1.35;max-width:52ch;margin-top:14px}
.totals{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 20px;margin-top:26px;border-top:1px solid var(--hair)}
.totals div{padding:14px 0 0;min-width:0}
.totals dt{font-size:1rem;font-weight:500;line-height:1.3}
.totals dd{font-size:clamp(1.625rem,2.6vw,2.25rem);font-weight:600;letter-spacing:-.02em;line-height:1.05;margin-top:4px;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.totals dd.is-roll{animation:roll var(--pour) var(--ease) both}

/* reading line */
.reading{font-family:var(--font-spec);font-size:.75rem;font-weight:500;letter-spacing:.02em;white-space:pre;margin:12px 0 0}
.note-url{font-size:.9375rem;margin-top:8px;opacity:.85}

/* under the slab: the ledger left, notes right */
.under{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px 32px;margin-top:40px;align-items:start}
.work{grid-column:span 7;min-width:0}
.side{grid-column:span 5;min-width:0}
.ledger td{padding:9px 0;border-bottom:1px solid var(--line);vertical-align:baseline}
.ledger td:first-child{padding-right:16px}
.ledger td:last-child{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap;width:9em}
.ledger tr.is-sum td{font-weight:600;border-bottom:2px solid var(--ink)}
.ledger tr.is-head td{font-size:1.375rem;font-weight:600;padding-top:22px;border-bottom:1px solid var(--ink);text-align:left;width:auto}
.ledger tr.is-head:first-child td{padding-top:0}
.ledger tr.is-quiet td{opacity:.7}
.ledger .why{display:block;font-size:.875rem;opacity:.8;font-weight:400;line-height:1.4;max-width:48ch}
.ledger tr.is-final td{font-size:1.5rem;font-weight:600;padding-top:18px;border-bottom:0}
.ledger td .accent{color:var(--accent)}
.work-note{font-size:.9375rem;margin-top:14px;max-width:60ch;opacity:.85}
.panel{position:relative;border:1px solid var(--line);background:var(--panel);padding:24px 28px 28px;display:grid;gap:24px}
.panel-head{font-size:1.125rem;font-weight:500;margin-bottom:8px;line-height:1.3}
.field-note{font-size:.9375rem;opacity:.9}
.left-out li{font-size:.9375rem;padding:6px 0;border-bottom:1px solid var(--line)}
.left-out li:last-child{border-bottom:0}
.sources div{padding:8px 0;border-bottom:1px solid var(--line);font-size:.875rem}
.sources div:last-child{border-bottom:0}
.sources dt{font-weight:500}
.sources dd{opacity:.85;margin-top:2px;overflow-wrap:anywhere}
.sources a{text-decoration:underline;text-underline-offset:3px}
.sources .tag{background:var(--ink);color:var(--paper);margin-left:6px;font-size:.625rem;padding:1px 5px}

/* notes */
.notes{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));margin-top:48px}
.notes>*{grid-column:span 8}
.notes p{max-width:68ch;margin-bottom:14px}
.notes .section-head{margin-top:14px}

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

/* narrow screens */
@media (max-width:1000px){
  .deck{grid-template-columns:1fr;gap:24px}
  .inputs,.ladder-wrap{grid-column:span 1}
  .under{grid-template-columns:1fr}
  .work,.side{grid-column:span 1}
  .notes>*{grid-column:span 12}
}
@media (max-width:640px){
  .strip{padding:14px 16px 0}
  .wrap{padding:28px 16px 0}
  .title{font-size:2.75rem}
  .lede{font-size:1rem}
  .hero{padding:22px 16px 24px}
  .rate-marg{margin-left:0;padding-left:0;border-left:0;flex-basis:100%;margin-top:8px}
  .verdict{font-size:1.125rem}
  .inputs{padding:16px 14px 16px;gap:14px}
  .row-2{grid-template-columns:1fr;gap:12px}
  .checks{grid-template-columns:1fr}
  .btn{padding:12px 14px}
  .col-rate{width:52px}
  .rung-rate{font-size:1.25rem}
  .col-slice{width:92px}
  .rung-slice .tag{min-width:0}
  .ladder td{height:54px}
  .rung-range{font-size:.625rem}
  .rung-range .full{display:none}
  .rung-range .short{display:inline}
  .ladder-foot{font-size:1rem}
  .totals{grid-template-columns:1fr;gap:0}
  .totals div{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:10px 0;border-bottom:1px solid var(--hair)}
  .totals dd{margin-top:0;font-size:1.375rem}
  .panel{padding:20px 16px 22px;gap:20px}
  .section-head{font-size:1.625rem}
  .ledger td:last-child{width:7em}
  .reading{white-space:pre-wrap;overflow-wrap:anywhere}
  .foot{padding:16px 16px 32px}
}

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