/* =========================================================
   SoloValora — Calculadoras
   Sistema de diseño: instrumento fiscal (papel + tinta + esmeralda)
   ========================================================= */

:root {
  /* Paleta */
  --paper:        #F3F5F1;
  --paper-deep:   #ECEFE9;
  --surface:      #FFFFFF;
  --ink:          #14171C;
  --ink-soft:     #555E6A;
  --ink-faint:    #899099;
  --line:         #E4E8E2;
  --line-strong:  #CCD2CA;
  --accent:       #0C6B58;   /* esmeralda — total / correcto */
  --accent-deep:  #08503F;
  --accent-bright:#13A582;
  --accent-wash:  #E6F2EC;
  --amber:        #A8690F;   /* el tramo de IVA */
  --amber-wash:   #F7EEDC;
  --danger:       #B23B3B;

  /* Tipografía */
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body:    "Inter", system-ui, sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, monospace;

  /* Geometría */
  --radius:    16px;
  --radius-sm: 10px;
  --maxw:      760px;
  --shadow:    0 1px 2px rgba(20,23,28,.04), 0 10px 34px -14px rgba(20,23,28,.20);
  --shadow-sm: 0 1px 2px rgba(20,23,28,.06);
  --ring:      0 0 0 4px var(--accent-wash);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background-color: var(--paper);
  /* trama sutil de papel cuadriculado — la firma del instrumento fiscal */
  background-image:
    linear-gradient(rgba(12,107,88,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(12,107,88,.022) 1px, transparent 1px);
  background-size: 26px 26px;
  background-position: -1px -1px;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

::selection { background: var(--accent); color: #fff; }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.16; letter-spacing: -.015em; color: var(--ink); }
h1 { font-size: clamp(2rem, 6.4vw, 2.85rem); margin: 0 0 .35em; }
h2 { font-size: clamp(1.4rem, 4.5vw, 1.75rem); margin: 2.5em 0 .7em; }
h3 { font-size: 1.14rem; margin: 1.6em 0 .4em; }

p { margin: 0 0 1em; }
strong { font-weight: 600; }

/* Salto al contenido (accesibilidad) */
.skip {
  position: absolute; left: -9999px; top: 8px; z-index: 60;
  background: var(--accent); color: #fff; padding: 10px 16px; border-radius: var(--radius-sm);
  font-weight: 600; font-size: .9rem;
}
.skip:focus { left: 16px; text-decoration: none; }

/* ---------- Cabecera ---------- */
.site-head {
  border-bottom: 1px solid var(--line);
  background: rgba(243,245,241,.82);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  position: sticky; top: 0; z-index: 20;
}
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 1.16rem; letter-spacing: -.025em; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand span { color: var(--accent); }
.brand-mark {
  width: 28px; height: 28px; border-radius: 8px; flex-shrink: 0;
  background: linear-gradient(150deg, var(--accent-bright), var(--accent-deep));
  display: grid; place-items: center; color: #fff;
  font-family: var(--font-mono); font-weight: 600; font-size: .95rem;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.25), 0 2px 6px -2px rgba(8,80,63,.5);
}
.head-tag { font-size: .8rem; color: var(--ink-soft); font-family: var(--font-mono); letter-spacing: .02em; }

/* ---------- Breadcrumb ---------- */
.crumbs { font-family: var(--font-mono); font-size: .76rem; color: var(--ink-faint); padding: 18px 0 0; letter-spacing: .02em; }
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; }
.crumbs li { display: inline-flex; align-items: center; gap: 8px; }
.crumbs li + li::before { content: "/"; color: var(--line-strong); }
.crumbs a { color: var(--ink-soft); }
.crumbs [aria-current] { color: var(--ink); }

/* ---------- Hero / intro ---------- */
.hero { padding: 34px 0 6px; }
.eyebrow {
  font-family: var(--font-mono); font-size: .74rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 16px; display: inline-flex; align-items: center; gap: 9px;
}
.eyebrow::before { content: ""; width: 22px; height: 1.5px; background: var(--accent); display: inline-block; }
.lede { font-size: 1.13rem; color: var(--ink-soft); max-width: 58ch; }

/* Tira de confianza */
.trust { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0 4px; padding: 0; list-style: none; }
.trust li {
  font-family: var(--font-mono); font-size: .76rem; color: var(--ink-soft);
  background: var(--surface); border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 14px 6px 12px; display: inline-flex; align-items: center; gap: 7px; box-shadow: var(--shadow-sm);
}
.trust svg { width: 14px; height: 14px; color: var(--accent); flex-shrink: 0; }

/* =========================================================
   CALCULADORA
   ========================================================= */
.calc {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  margin: 26px 0 14px;
  display: grid;
  gap: 22px;
}
@media (min-width: 640px) {
  .calc { grid-template-columns: 1fr 290px; padding: 30px; gap: 30px; }
}

.calc-controls { display: flex; flex-direction: column; gap: 20px; }

/* Toggle sumar / quitar */
.seg {
  display: grid; grid-template-columns: 1fr 1fr; gap: 4px;
  background: var(--paper-deep); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 4px;
}
.seg button {
  appearance: none; border: 0; background: transparent; cursor: pointer;
  font-family: var(--font-body); font-size: .95rem; font-weight: 600; color: var(--ink-soft);
  padding: 11px 8px; border-radius: 7px; transition: background .18s, color .18s, box-shadow .18s;
}
.seg button:hover { color: var(--ink); }
.seg button[aria-pressed="true"] { background: var(--surface); color: var(--accent); box-shadow: var(--shadow-sm); }
.seg button:focus-visible { outline: 2px solid var(--accent-bright); outline-offset: 2px; }

label.field { display: block; }
.field-label { display: block; font-size: .8rem; font-weight: 600; color: var(--ink-soft); margin-bottom: 8px; letter-spacing: .01em; }

/* Input importe */
.amount {
  position: relative; display: flex; align-items: center;
  border: 1.5px solid var(--line-strong); border-radius: var(--radius-sm); background: var(--surface);
  transition: border-color .15s, box-shadow .15s;
}
.amount:focus-within { border-color: var(--accent); box-shadow: var(--ring); }
.amount input {
  border: 0; outline: 0; background: transparent; width: 100%;
  font-family: var(--font-mono); font-size: 1.6rem; font-weight: 500; color: var(--ink);
  padding: 14px 10px 14px 16px; min-width: 0;
}
.amount .cur { font-family: var(--font-mono); font-size: 1.35rem; color: var(--ink-faint); padding-right: 16px; }
.amount input::placeholder { color: var(--ink-faint); }

/* Selector de tipo */
.rates { display: flex; flex-wrap: wrap; gap: 8px; }
.rates button {
  appearance: none; cursor: pointer; font-family: var(--font-mono); font-size: .94rem; font-weight: 500;
  background: var(--surface); border: 1.5px solid var(--line-strong); color: var(--ink-soft);
  padding: 9px 15px; border-radius: 999px; transition: background .15s, border-color .15s, color .15s, transform .1s;
}
.rates button:hover { border-color: var(--accent); color: var(--ink); }
.rates button:active { transform: scale(.96); }
.rates button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
.rates button:focus-visible { outline: 2px solid var(--accent-bright); outline-offset: 2px; }
.rate-custom { display: none; align-items: center; gap: 0; max-width: 124px; }
.rate-custom.show { display: inline-flex; }
.rate-custom input {
  width: 64px; border: 1.5px solid var(--line-strong); border-radius: 999px 0 0 999px; border-right: 0;
  padding: 9px 6px 9px 14px; font-family: var(--font-mono); font-size: .94rem; outline: 0; text-align: right; color: var(--ink);
}
.rate-custom input:focus { border-color: var(--accent); }
.rate-custom .pct {
  font-family: var(--font-mono); padding: 9px 14px 9px 6px; border: 1.5px solid var(--line-strong);
  border-left: 0; border-radius: 0 999px 999px 0; color: var(--ink-faint); background: var(--surface);
}

/* Atajos de ejemplo */
.chips { margin-top: 4px; }
.chips-label { font-size: .76rem; color: var(--ink-faint); margin-bottom: 8px; font-family: var(--font-mono); letter-spacing: .04em; text-transform: uppercase; }
.chips-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  appearance: none; cursor: pointer; font-family: var(--font-mono); font-size: .82rem; color: var(--ink-soft);
  background: var(--paper-deep); border: 1px solid var(--line); border-radius: 999px; padding: 6px 13px;
  transition: background .15s, color .15s, border-color .15s;
}
.chip:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-wash); }
.chip:focus-visible { outline: 2px solid var(--accent-bright); outline-offset: 2px; }

/* ---------- Resultado: estética de ticket ---------- */
.ticket {
  position: relative; background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 24px 20px 18px; align-self: start;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.5);
}
/* borde superior perforado/troquelado — la firma de la página */
.ticket::before {
  content: ""; position: absolute; left: -1px; right: -1px; top: -6px; height: 12px;
  background: radial-gradient(circle at 7px 6px, transparent 5.5px, var(--paper) 6px) repeat-x;
  background-size: 14px 12px;
}
.ticket-head {
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-faint); display: flex; justify-content: space-between; border-bottom: 1px dashed var(--line-strong);
  padding-bottom: 11px; margin-bottom: 14px;
}
.line { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 7px 0; }
.line .k { font-size: .9rem; color: var(--ink-soft); }
.line .v { font-family: var(--font-mono); font-size: 1.06rem; font-weight: 500; color: var(--ink); font-variant-numeric: tabular-nums; white-space: nowrap; }
.line.iva .k { color: var(--amber); }
.line.iva .v { color: var(--amber); }
.ticket .rule { height: 1px; background: var(--line-strong); margin: 8px 0; border: 0; }
.line.total { padding-top: 12px; }
.line.total .k { font-weight: 700; font-family: var(--font-display); color: var(--ink); font-size: 1rem; }
.line.total .v { font-size: 1.65rem; font-weight: 600; color: var(--accent); }
.line.total .v.pulse { animation: pulse .42s ease; }
@keyframes pulse { 0% { transform: scale(1); } 40% { transform: scale(1.07); } 100% { transform: scale(1); } }

/* barra de proporción base vs IVA */
.ticket-bar { display: flex; height: 8px; border-radius: 999px; overflow: hidden; background: var(--line); margin: 14px 0 4px; }
.ticket-bar i { display: block; height: 100%; transition: width .4s cubic-bezier(.4,0,.2,1); }
.ticket-bar .b-base { background: var(--accent); }
.ticket-bar .b-iva { background: var(--amber); }
.ticket-legend { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: .68rem; color: var(--ink-faint); margin-top: 6px; }
.ticket-legend span { display: inline-flex; align-items: center; gap: 5px; }
.ticket-legend i { width: 8px; height: 8px; border-radius: 2px; display: inline-block; }
.ticket-legend .d-base { background: var(--accent); }
.ticket-legend .d-iva { background: var(--amber); }

.ticket-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  font-family: var(--font-mono); font-size: .72rem; color: var(--ink-faint);
  margin-top: 14px; border-top: 1px dashed var(--line-strong); padding-top: 12px;
}
.copy-btn {
  appearance: none; cursor: pointer; font-family: var(--font-mono); font-size: .72rem; color: var(--ink-soft);
  background: var(--surface); border: 1px solid var(--line-strong); border-radius: 999px; padding: 5px 12px;
  display: inline-flex; align-items: center; gap: 6px; transition: background .15s, color .15s, border-color .15s;
}
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }
.copy-btn:focus-visible { outline: 2px solid var(--accent-bright); outline-offset: 2px; }
.copy-btn svg { width: 13px; height: 13px; }
.copy-btn.done { color: var(--accent); border-color: var(--accent); }

/* ---------- Bloque AdSense ---------- */
.ad-slot {
  margin: 32px 0; min-height: 90px; display: flex; align-items: center; justify-content: center;
  border: 1px dashed var(--line-strong); border-radius: var(--radius-sm);
  color: var(--ink-faint); font-family: var(--font-mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase;
  background: repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(0,0,0,.012) 10px, rgba(0,0,0,.012) 20px);
}

/* ---------- Contenido ---------- */
.content { padding: 8px 0 0; }
.content p, .content li { color: #2A2E35; }
.content ul { padding-left: 1.2em; margin: 0 0 1em; }
.content li { margin-bottom: .45em; }

.note {
  border-left: 3px solid var(--accent); background: var(--accent-wash);
  padding: 15px 18px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 24px 0; font-size: .97rem;
}
.note strong { color: var(--accent-deep); }

/* Tabla de tipos */
.table-wrap { overflow-x: auto; margin: 16px 0 8px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); box-shadow: var(--shadow-sm); }
table { width: 100%; border-collapse: collapse; font-size: .95rem; min-width: 460px; }
thead th { text-align: left; font-family: var(--font-display); font-size: .8rem; letter-spacing: .03em; text-transform: uppercase; color: var(--ink-soft); background: var(--paper); padding: 13px 16px; border-bottom: 1px solid var(--line); }
tbody td { padding: 13px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: var(--paper); }
.tipo { font-family: var(--font-mono); font-weight: 600; color: var(--accent); white-space: nowrap; }
.table-note { font-size: .84rem; color: var(--ink-faint); margin-top: 8px; }

/* Ejemplos */
.examples { display: grid; gap: 12px; margin: 16px 0; }
@media (min-width: 560px) { .examples { grid-template-columns: 1fr 1fr; } }
.ex {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 16px 18px; box-shadow: var(--shadow-sm);
}
.ex h4 { margin: 0 0 8px; font-family: var(--font-display); font-size: .98rem; }
.ex .calc-line { font-family: var(--font-mono); font-size: .87rem; color: var(--ink-soft); margin: 2px 0; }
.ex .res { font-family: var(--font-mono); font-weight: 600; color: var(--accent); margin-top: 8px; font-size: 1rem; }

/* FAQ */
.faq details {
  border: 1px solid var(--line); border-radius: var(--radius-sm); margin-bottom: 10px; background: var(--surface);
  overflow: hidden; transition: border-color .15s;
}
.faq details[open] { border-color: var(--line-strong); }
.faq summary {
  cursor: pointer; padding: 16px 18px; font-family: var(--font-display); font-weight: 500; font-size: 1.02rem;
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 14px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--font-mono); color: var(--accent); font-size: 1.4rem; line-height: 1; flex-shrink: 0; transition: transform .2s; }
.faq details[open] summary::after { content: "–"; }
.faq summary:hover { color: var(--accent); }
.faq summary:focus-visible { outline: 2px solid var(--accent-bright); outline-offset: -2px; }
.faq .ans { padding: 0 18px 16px; color: #2A2E35; font-size: .97rem; }

/* ---------- Home: rejilla de calculadoras ---------- */
.calc-grid { display: grid; gap: 14px; margin: 24px 0; }
@media (min-width: 560px) { .calc-grid { grid-template-columns: 1fr 1fr; } }
.calc-card {
  position: relative; display: flex; flex-direction: column; gap: 4px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; box-shadow: var(--shadow-sm); transition: transform .16s, box-shadow .16s, border-color .16s;
}
a.calc-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--accent); text-decoration: none; }
a.calc-card::after {
  content: "→"; position: absolute; top: 18px; right: 18px; font-family: var(--font-mono); color: var(--accent);
  opacity: 0; transform: translateX(-4px); transition: opacity .16s, transform .16s;
}
a.calc-card:hover::after { opacity: 1; transform: translateX(0); }
.calc-card .ico {
  width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; margin-bottom: 10px;
  background: var(--accent-wash); color: var(--accent); border: 1px solid var(--line);
}
.calc-card .ico svg { width: 21px; height: 21px; }
.calc-card h3 { margin: 0 0 4px; }
.calc-card p { margin: 0; color: var(--ink-soft); font-size: .94rem; }
.calc-card.soon { opacity: .72; }
.calc-card.soon .ico { background: var(--paper-deep); color: var(--ink-faint); }
.calc-card .badge {
  position: absolute; top: 16px; right: 16px;
  font-family: var(--font-mono); font-size: .64rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-faint);
  background: var(--paper-deep); border: 1px solid var(--line); border-radius: 999px; padding: 3px 9px;
}

/* ---------- Pie ---------- */
.site-foot { border-top: 1px solid var(--line); margin-top: 60px; padding: 32px 0 54px; color: var(--ink-soft); font-size: .9rem; }
.site-foot .upd { font-family: var(--font-mono); font-size: .78rem; color: var(--accent); margin-bottom: 8px; }
.site-foot a { color: var(--ink-soft); }
.disclaimer { font-size: .82rem; color: var(--ink-faint); margin-top: 14px; max-width: 64ch; }

/* ---------- Accesibilidad / motion ---------- */
:focus-visible { outline: 2px solid var(--accent-bright); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* =========================================================
   Controles de formulario (finiquito, paro, etc.)
   ========================================================= */
.in {
  width: 100%; border: 1.5px solid var(--line-strong); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--ink); font-family: var(--font-body); font-size: 1rem;
  padding: 11px 13px; outline: 0; transition: border-color .15s, box-shadow .15s;
}
.in:focus { border-color: var(--accent); box-shadow: var(--ring); }
input.in[inputmode], input.in[type="number"], input.in[type="date"] { font-family: var(--font-mono); }
select.in {
  appearance: none; cursor: pointer;
  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' stroke='%23555E6A' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px;
}
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 460px) { .row2 { grid-template-columns: 1fr; } }
.hint { display: block; font-size: .8rem; color: var(--ink-faint); margin-top: 6px; line-height: 1.4; }

/* Calculadoras con formulario largo: ticket al lado (sticky en escritorio) */
.calc--form { display: block; }
.calc--form .ticket { margin-top: 22px; }
@media (min-width: 760px) {
  .calc--form { display: grid; grid-template-columns: 1fr 300px; gap: 30px; align-items: start; }
  .calc--form .ticket { margin-top: 0; position: sticky; top: 80px; }
}

/* =========================================================
   Enlaces cruzados entre calculadoras
   ========================================================= */
.related { margin-top: 8px; }
.related h2 { margin-bottom: .7em; }
.related-grid { display: grid; gap: 10px; }
@media (min-width: 560px) { .related-grid { grid-template-columns: repeat(3, 1fr); } }
.related-card {
  display: block; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 14px 16px; box-shadow: var(--shadow-sm); transition: transform .15s, box-shadow .15s, border-color .15s;
}
.related-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--accent); text-decoration: none; }
.related-card .rc-name { display: block; font-family: var(--font-display); font-weight: 700; font-size: 1rem; color: var(--ink); }
.related-card .rc-desc { display: block; font-size: .85rem; color: var(--ink-soft); margin-top: 2px; }