/* calculaneto · estilo impreso fiscal. Membrete oscuro, casillas numeradas, hoja de liquidación, fluorescente para el dato clave. */
:root {
  --paper: #f3f4f1;
  --sheet: #ffffff;
  --ink: #16202e;
  --ink-2: #4b5563;
  --rule: #16202e;
  --hair: #cfd4d9;
  --mark: #ffe14d;
  --mark-ink: #16202e;
  --red: #c0352b;
  --blue: #1f4fbf;
  --f-head: "Archivo", "Arial Narrow", Arial, sans-serif;
  --f-ui: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --f-num: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0f141b; --sheet: #161d27; --ink: #e8ebef; --ink-2: #a3acb8; --rule: #e8ebef; --hair: #2c3644;
    --mark: #e8c62f; --mark-ink: #161d27; --red: #ff7a6b; --blue: #8fb0ff; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0f141b; --sheet: #161d27; --ink: #e8ebef; --ink-2: #a3acb8; --rule: #e8ebef; --hair: #2c3644;
  --mark: #e8c62f; --mark-ink: #161d27; --red: #ff7a6b; --blue: #8fb0ff; color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--f-ui); font-size: 15.5px; line-height: 1.5; }
.gut { padding-left: max(18px, env(safe-area-inset-left, 0px)); padding-right: max(18px, env(safe-area-inset-right, 0px)); }
.in { max-width: 1120px; margin: 0 auto; }
a { color: var(--ink); text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.mono { font-family: var(--f-num); font-variant-numeric: tabular-nums; }
.hl { background: linear-gradient(transparent 12%, var(--mark) 12%, var(--mark) 88%, transparent 88%); color: var(--mark-ink); padding: 0 .12em; -webkit-box-decoration-break: clone; box-decoration-break: clone; }

/* Membrete */
.mast { background: var(--ink); color: var(--paper); position: relative; }
.mast .in { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 56px; }
.brand { color: inherit; text-decoration: none; font-family: var(--f-head); font-weight: 800; font-stretch: 118%; font-size: 1.2rem; letter-spacing: -.01em; display: inline-flex; align-items: center; gap: 10px; }
.brand .box { display: inline-grid; place-items: center; width: 24px; height: 24px; border: 2px solid currentColor; font-family: var(--f-num); font-size: .78rem; font-weight: 600; }
.brand em { font-style: normal; background: var(--mark); color: var(--mark-ink); padding: 0 4px; }
.nav { display: flex; }
.nav a { color: inherit; opacity: .78; text-decoration: none; font-weight: 600; font-size: .86rem; padding: 6px 11px; border-left: 1px solid rgba(255,255,255,.18); }
.nav a:first-child { border-left: 0; }
.nav a:hover { opacity: 1; text-decoration: underline; }
.nav a[aria-current] { opacity: 1; box-shadow: inset 0 -3px 0 var(--mark); }
.menu-btn { display: none; background: none; color: inherit; border: 1.5px solid currentColor; font: 700 .82rem var(--f-ui); text-transform: uppercase; letter-spacing: .06em; padding: 6px 10px; cursor: pointer; }
@media (max-width: 980px) {
  .menu-btn { display: block; }
  .nav { display: none; position: absolute; z-index: 20; left: 0; right: 0; top: 100%; flex-direction: column; background: var(--ink); padding: 6px max(18px, env(safe-area-inset-right, 0px)) 14px max(18px, env(safe-area-inset-left, 0px)); }
  .nav.open { display: flex; }
  .nav a { border-left: 0; border-top: 1px solid rgba(255,255,255,.14); padding: 12px 2px; font-size: 1rem; }
}

/* Cabecera del impreso */
.formhead { padding-block: 30px 22px; }
.ref { display: flex; flex-wrap: wrap; gap: 6px 18px; font-family: var(--f-num); font-size: .76rem; color: var(--ink-2); text-transform: uppercase; letter-spacing: .04em; margin-bottom: 14px; }
.ref a { color: inherit; }
.formhead h1 { font-family: var(--f-head); font-weight: 850; font-stretch: 112%; font-size: clamp(1.9rem, 4.6vw, 3rem); line-height: 1.02; letter-spacing: -.02em; margin: 0 0 14px; max-width: 21ch; text-wrap: balance; }
.formhead p { margin: 0; max-width: 64ch; color: var(--ink-2); font-size: 1.04rem; }

/* Rejilla y hojas */
.calc { display: grid; grid-template-columns: minmax(300px, 400px) minmax(0, 1fr); gap: 28px; align-items: start; padding-bottom: 40px; }
@media (max-width: 920px) { .calc { grid-template-columns: 1fr; } }
.sheet { background: var(--sheet); border: 1.5px solid var(--rule); min-width: 0; }
.sheet-h { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 10px 16px; border-bottom: 1.5px solid var(--rule); }
.sheet-h h2 { margin: 0; font-family: var(--f-head); font-weight: 800; font-stretch: 110%; font-size: .86rem; text-transform: uppercase; letter-spacing: .06em; }
.sheet-h .aux { font-family: var(--f-num); font-size: .74rem; color: var(--ink-2); }
.form { position: sticky; top: 14px; }
@media (max-width: 920px) { .form { position: static; } }
.results { display: flex; flex-direction: column; gap: 24px; min-width: 0; }

/* Casillas */
.sect { padding: 6px 16px 4px; font-family: var(--f-num); font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-2); background: var(--paper); border-bottom: 1px solid var(--hair); }
.cas { display: grid; grid-template-columns: 34px 1fr auto; gap: 4px 10px; align-items: center; padding: 12px 16px 10px; border-bottom: 1px solid var(--hair); }
.cas .n { font-family: var(--f-num); font-size: .72rem; color: var(--ink-2); border: 1px solid var(--hair); text-align: center; padding: 1px 0; align-self: start; margin-top: 3px; }
.cas label { font-weight: 600; font-size: .93rem; line-height: 1.25; }
.cas .val { display: flex; align-items: baseline; border-bottom: 1.5px solid var(--rule); min-width: 118px; }
.cas .val input, .cas .val select { width: 100%; min-width: 0; border: 0; background: transparent; color: var(--ink); font: 500 1.02rem var(--f-num); text-align: right; padding: 3px 4px 2px; outline: none; }
.cas .val select { text-align: left; font-size: .9rem; cursor: pointer; }
.cas.wide .val { grid-column: 2 / 4; min-width: 0; }
.cas .val:focus-within { border-bottom-color: var(--blue); box-shadow: 0 2px 0 var(--blue); }
.cas .val span { font-family: var(--f-num); font-size: .78rem; color: var(--ink-2); padding-left: 4px; white-space: nowrap; }
.cas input[type=range], .cas .help, .cas .picks, .cas .real, .cas details.guide { grid-column: 2 / 4; }
.cas .help { margin: 0; font-size: .8rem; color: var(--ink-2); }
input[type=range] { -webkit-appearance: none; appearance: none; width: 100%; height: 20px; background: transparent; margin: 2px 0 0; cursor: pointer; --p: 50%; }
input[type=range]::-webkit-slider-runnable-track { height: 3px; background: linear-gradient(to right, var(--ink) var(--p), var(--hair) var(--p)); }
input[type=range]::-moz-range-track { height: 3px; background: var(--hair); }
input[type=range]::-moz-range-progress { height: 3px; background: var(--ink); }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 14px; height: 14px; margin-top: -5.5px; background: var(--mark); border: 2px solid var(--ink); border-radius: 0; }
input[type=range]::-moz-range-thumb { width: 12px; height: 12px; background: var(--mark); border: 2px solid var(--ink); border-radius: 0; }
.picks { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 2px; }
.pick { display: inline-flex; align-items: baseline; gap: 6px; background: var(--sheet); color: var(--ink); border: 1px solid var(--hair); font: 500 .8rem var(--f-ui); padding: 4px 8px; cursor: pointer; }
.pick b { font-family: var(--f-num); font-weight: 600; }
.pick:hover { border-color: var(--ink); }
.pick[aria-pressed="true"] { border-color: var(--ink); background: var(--mark); color: var(--mark-ink); }
.real { margin: 0; font-size: .8rem; color: var(--ink-2); font-family: var(--f-num); }
.real b { color: var(--ink); font-weight: 600; }
details.guide { font-size: .82rem; color: var(--ink-2); }
details.guide summary { cursor: pointer; color: var(--ink); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; width: fit-content; }
details.guide > div { margin-top: 8px; padding: 10px 12px; background: var(--paper); border-left: 3px solid var(--ink); }
details.guide p { margin: 0 0 6px; }
details.guide p:last-child { margin: 0; }
.formfoot { padding: 10px 16px; }
.reset { background: none; border: 0; padding: 0; color: var(--ink); font: 600 .84rem var(--f-ui); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }
.err { color: var(--red); font-size: .85rem; margin: 0; padding: 10px 16px 0; }
.err:empty { display: none; }

/* Veredicto y liquidación */
.verdict { padding: 20px 18px 18px; border-bottom: 1.5px solid var(--rule); }
.tag { display: inline-block; font-family: var(--f-num); font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; border: 1.5px solid currentColor; padding: 2px 8px; margin-bottom: 12px; }
.tag.ok { color: var(--blue); }
.tag.bad { color: var(--red); transform: rotate(-1.5deg); }
.tag.neu { color: var(--ink); }
.verdict h2 { margin: 0 0 8px; font-family: var(--f-head); font-weight: 850; font-stretch: 112%; font-size: clamp(1.5rem, 3.4vw, 2.15rem); line-height: 1.08; letter-spacing: -.015em; text-wrap: balance; }
.verdict p { margin: 0; color: var(--ink-2); max-width: 64ch; }
.verdict p b { color: var(--ink); font-family: var(--f-num); font-weight: 600; }
.ledger { width: 100%; border-collapse: collapse; }
.ledger td { padding: 9px 16px; border-bottom: 1px solid var(--hair); vertical-align: baseline; }
.ledger td.c { width: 46px; font-family: var(--f-num); font-size: .74rem; color: var(--ink-2); padding-right: 0; }
.ledger td.t { font-size: .93rem; }
.ledger td.t small { display: block; color: var(--ink-2); font-size: .78rem; }
.ledger td.a { text-align: right; font-family: var(--f-num); font-variant-numeric: tabular-nums; font-weight: 500; white-space: nowrap; }
.ledger tr.neg td.a { color: var(--red); }
.ledger tr.pos td.a { color: var(--blue); }
.ledger tr.tot td { border-bottom: 0; border-top: 1.5px solid var(--rule); font-weight: 700; padding-top: 12px; padding-bottom: 14px; }
.ledger tr.tot td.a { font-size: 1.25rem; font-weight: 600; }
.ledger tr.tot td.a > span { border-bottom: 3px double var(--rule); }
.progress { padding: 4px 16px 16px; }
.bar { position: relative; height: 18px; border: 1.5px solid var(--rule); background: repeating-linear-gradient(-45deg, transparent 0 5px, var(--hair) 5px 6px); }
.bar i { position: absolute; inset: 0 auto 0 0; background: var(--ink); transition: width .3s ease; }
.bar-l { display: flex; justify-content: space-between; font-family: var(--f-num); font-size: .76rem; color: var(--ink-2); margin-top: 6px; }
.note { margin: 0; padding: 12px 16px; border-top: 1px solid var(--hair); font-size: .88rem; color: var(--ink-2); background: color-mix(in srgb, var(--mark) 16%, transparent); }
.note b { color: var(--ink); }
.note:empty { display: none; }

/* Escenarios */
.scen { border-top: 1.5px solid var(--rule); }
.scen h3 { margin: 0; padding: 12px 16px 4px; font-family: var(--f-head); font-weight: 800; font-stretch: 110%; font-size: .86rem; text-transform: uppercase; letter-spacing: .06em; }
.scen p.sub { margin: 0; padding: 0 16px 8px; font-size: .82rem; color: var(--ink-2); }
.tw { overflow-x: auto; }
.tbl { width: 100%; border-collapse: collapse; font-size: .88rem; min-width: 440px; }
.tbl th, .tbl td { padding: 8px 16px; border-bottom: 1px solid var(--hair); text-align: right; white-space: nowrap; }
.tbl th { font-weight: 600; font-size: .76rem; color: var(--ink-2); text-transform: uppercase; letter-spacing: .04em; }
.tbl th:first-child, .tbl td:first-child { text-align: left; }
.tbl td { font-family: var(--f-num); font-variant-numeric: tabular-nums; }
.tbl td:first-child { font-family: var(--f-ui); }
.tbl td small { display: block; font-family: var(--f-num); font-size: .74rem; color: var(--ink-2); }
.tbl tr.mid td { background: color-mix(in srgb, var(--mark) 22%, transparent); font-weight: 600; }
.tbl .no { color: var(--red); }
.tbl .yes { color: var(--blue); }

/* Gráficos */
.legend { display: flex; flex-wrap: wrap; gap: 6px 20px; font-size: .82rem; color: var(--ink-2); padding: 12px 16px 0; }
.legend i { display: inline-block; width: 18px; vertical-align: middle; margin-right: 6px; border-top: 2.5px solid var(--ink); }
.legend i.d { border-top: 2px dashed var(--red); }
.legend i.g { border-top: 2px dashed var(--ink-2); }
.legend i.a { border-top-color: var(--red); }
.legend i.band { border-top: 0; height: 10px; background: color-mix(in srgb, var(--ink) 12%, transparent); }
.legend i.sq { width: 12px; height: 12px; border: 1.5px solid var(--ink); border-top-width: 1.5px; }
.chart { padding: 4px 8px 10px; overflow-x: auto; }
.chart svg { display: block; width: 100%; min-width: 520px; height: auto; }
.chart text { font: 400 11px var(--f-num); fill: var(--ink-2); }
details.how { border-top: 1.5px solid var(--rule); }
details.how summary { cursor: pointer; list-style: none; padding: 12px 16px; font-weight: 700; font-size: .9rem; text-transform: uppercase; letter-spacing: .04em; display: flex; justify-content: space-between; }
details.how summary::-webkit-details-marker { display: none; }
details.how summary::after { content: "+"; font-family: var(--f-num); }
details.how[open] summary::after { content: "−"; }
details.how ol, details.how ul { margin: 0; padding: 0 16px 16px 36px; color: var(--ink-2); font-size: .9rem; }
details.how li + li { margin-top: 6px; }

/* Guía explicativa */
.guide-sec { padding-block: 8px 40px; }
.guide-sec > .in > h2 { font-family: var(--f-head); font-weight: 850; font-stretch: 112%; font-size: clamp(1.4rem, 3vw, 1.9rem); letter-spacing: -.015em; margin: 0 0 6px; }
.guide-sec > .in > p.lead { color: var(--ink-2); margin: 0 0 20px; max-width: 64ch; }
.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); border-top: 1.5px solid var(--rule); }
.col { padding: 18px 22px 20px 0; }
.col + .col { border-left: 1px solid var(--hair); padding-left: 22px; }
@media (max-width: 640px) { .col + .col { border-left: 0; border-top: 1px solid var(--hair); padding-left: 0; } }
.col .k { font-family: var(--f-num); font-size: .74rem; color: var(--ink-2); text-transform: uppercase; letter-spacing: .05em; }
.col h3 { font-family: var(--f-head); font-weight: 800; font-stretch: 108%; font-size: 1.1rem; margin: 4px 0 8px; }
.col p { margin: 0 0 8px; color: var(--ink-2); max-width: 60ch; }
.col p b { color: var(--ink); }
.col ul { margin: 0; padding-left: 18px; color: var(--ink-2); }
.col li + li { margin-top: 4px; }

/* Portada */
.hero { padding-block: 44px 30px; }
.hero h1 { font-family: var(--f-head); font-weight: 900; font-stretch: 118%; font-size: clamp(2.3rem, 6.4vw, 4.4rem); line-height: .98; letter-spacing: -.03em; margin: 0 0 18px; max-width: 15ch; }
.hero p { color: var(--ink-2); max-width: 58ch; font-size: 1.1rem; margin: 0; }
.index { border-top: 1.5px solid var(--rule); margin-bottom: 40px; }
.row { display: grid; grid-template-columns: 60px minmax(0, 1fr) auto; gap: 18px; align-items: baseline; padding: 18px 0; border-bottom: 1px solid var(--hair); text-decoration: none; color: var(--ink); }
.row:hover h2 { text-decoration: underline; text-underline-offset: 4px; }
.row .n { font-family: var(--f-num); font-size: .8rem; color: var(--ink-2); }
.row h2 { margin: 0 0 4px; font-family: var(--f-head); font-weight: 800; font-stretch: 110%; font-size: clamp(1.1rem, 2.4vw, 1.45rem); }
.row p { margin: 0; color: var(--ink-2); font-size: .94rem; }
.row .go { font-family: var(--f-num); font-size: .85rem; white-space: nowrap; }
@media (max-width: 560px) { .row { grid-template-columns: 34px minmax(0, 1fr); } .row .go { display: none; } }

/* Barra móvil */
.mbar { display: none; }
@media (max-width: 920px) {
  .mbar { display: flex; position: fixed; z-index: 15; left: 0; right: 0; bottom: 0; align-items: center; justify-content: space-between; gap: 12px; background: var(--ink); color: var(--paper); padding: 10px max(18px, env(safe-area-inset-right, 0px)) calc(10px + env(safe-area-inset-bottom, 0px)) max(18px, env(safe-area-inset-left, 0px)); transition: transform .2s ease; }
  .mbar.away { transform: translateY(110%); }
  .mbar .l { font-family: var(--f-num); font-size: .72rem; text-transform: uppercase; letter-spacing: .05em; opacity: .75; }
  .mbar .v { font-family: var(--f-num); font-weight: 600; font-size: 1.1rem; }
  .mbar a { color: var(--mark-ink); background: var(--mark); font-weight: 700; font-size: .86rem; text-decoration: none; padding: 8px 12px; }
  body.has-mbar { padding-bottom: 70px; }
}

/* Pie */
.foot { border-top: 1.5px solid var(--rule); padding-block: 26px calc(30px + env(safe-area-inset-bottom, 0px)); }
.foot .in { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 26px; }
@media (max-width: 760px) { .foot .in { grid-template-columns: 1fr; } }
.foot .brand { color: var(--ink); font-size: 1.05rem; }
.foot p { color: var(--ink-2); font-size: .84rem; margin: 10px 0 0; max-width: 46ch; }
.foot h3 { font-family: var(--f-num); font-weight: 500; font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-2); margin: 0 0 10px; }
.foot ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.foot a { font-size: .9rem; text-decoration: none; }
.foot a:hover { text-decoration: underline; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }