/* Contando — sistema de diseño editorial sobrio */
:root {
  --paper: #f8f6f2;
  --paper-2: #efece4;
  --ink: #1c1b18;
  --ink-soft: #625d52;
  --accent: #24463a;      /* verde pino, contenido */
  --accent-ink: #142822;
  --amber: #a9895c;       /* bronce apagado, sustituye al ámbar vivo */
  --line: #e4ded2;
  --bad: #9c4634;         /* terracota desaturada, para el semáforo */
  --radius: 10px;
  --font-display: "Newsreader", Georgia, serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --space: clamp(3rem, 2rem + 4vw, 6rem);
}
* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.65;
  font-size: 1.0625rem;
}
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 1.25rem; }

/* Header */
header.site {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky; top: 0; z-index: 50;
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-family: var(--font-display); font-weight: 600; font-size: 1.3rem; color: var(--ink); text-decoration: none; letter-spacing: -0.005em; }
.logo em { color: var(--accent); font-style: normal; }
nav.main a {
  color: var(--ink-soft); text-decoration: none; font-size: .92rem; margin-left: 1.4rem;
  border-bottom: 2px solid transparent; padding-bottom: 2px; transition: color .15s, border-color .15s;
}
nav.main a:hover, nav.main a[aria-current="page"] { color: var(--ink); border-color: var(--accent); }

/* Hero */
.hero { padding: var(--space) 0 calc(var(--space) * .7); }
.hero .kicker { color: var(--accent); font-weight: 700; text-transform: uppercase; letter-spacing: .13em; font-size: .76rem; }
.hero h1 {
  font-family: var(--font-display); font-weight: 600; letter-spacing: -0.02em;
  font-size: clamp(2.1rem, 1.4rem + 3.6vw, 3.6rem); line-height: 1.1; margin: .5rem 0 1rem; max-width: 18ch;
}
.hero p.lead { color: var(--ink-soft); max-width: 52ch; font-size: 1.1rem; }

/* Grid de calculadoras */
.calc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; padding-bottom: var(--space); }
.calc-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.5rem 1.4rem; text-decoration: none; color: var(--ink);
  display: flex; flex-direction: column; gap: .5rem; position: relative; overflow: hidden;
  transition: transform .18s cubic-bezier(.16,1,.3,1), box-shadow .18s, border-color .18s;
}
.calc-card::before {
  content: ""; position: absolute; inset: 0 auto 0 0; width: 3px; background: var(--accent);
  transform: scaleY(0); transform-origin: bottom; transition: transform .22s cubic-bezier(.16,1,.3,1);
}
.calc-card:hover { transform: translateY(-2px); box-shadow: 0 12px 26px -20px rgba(28,27,24,.3); border-color: #d8d0bf; }
.calc-card:hover::before { transform: scaleY(1); }
.calc-card .n { font-size: .76rem; color: var(--amber); font-weight: 700; letter-spacing: .09em; }
.calc-card h2 { font-family: var(--font-display); font-size: 1.28rem; font-weight: 600; letter-spacing: -0.008em; }
.calc-card p { color: var(--ink-soft); font-size: .92rem; }

/* Página de calculadora */
.calc-page { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 2.5rem; padding: calc(var(--space) * .6) 0 var(--space); }
@media (max-width: 900px) { .calc-page { grid-template-columns: 1fr; } }
.calc-page h1 { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.02em; font-size: clamp(1.8rem, 1.3rem + 2.2vw, 2.6rem); line-height: 1.14; margin-bottom: .4rem; }
.calc-page .sub { color: var(--ink-soft); margin-bottom: 1.8rem; max-width: 60ch; }

.calc-box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.75rem; box-shadow: 0 8px 26px -22px rgba(28,27,24,.35); }
.field { margin-bottom: 1.1rem; }
.field label { display: block; font-weight: 600; font-size: .89rem; margin-bottom: .35rem; }
.field input, .field select {
  width: 100%; padding: .68rem .85rem; font-size: 1.02rem; font-family: var(--font-body);
  border: 1.5px solid var(--line); border-radius: 7px; background: var(--paper);
  transition: border-color .15s, box-shadow .15s;
}
.field input:focus, .field select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(36,70,58,.13); }
.field .hint { font-size: .8rem; color: var(--ink-soft); margin-top: .25rem; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 520px) { .row2 { grid-template-columns: 1fr; } }

button.calc {
  width: 100%; padding: .85rem; font-size: 1rem; font-weight: 600; cursor: pointer;
  background: var(--accent); color: #fff; border: none; border-radius: 7px;
  letter-spacing: .01em;
  transition: background .15s, transform .1s;
}
button.calc:hover { background: var(--accent-ink); }
button.calc:active { transform: scale(.985); }

.result { margin-top: 1.4rem; padding: 1.35rem; background: var(--paper-2); border-radius: var(--radius); display: none; }
.result.show { display: block; animation: rise .3s cubic-bezier(.16,1,.3,1); }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.result .big { font-family: var(--font-display); font-size: clamp(1.9rem, 1.5rem + 1.7vw, 2.6rem); font-weight: 600; color: var(--accent-ink); line-height: 1.1; }
.result .big small { font-size: .45em; color: var(--ink-soft); font-weight: 400; }
.result table { width: 100%; margin-top: .9rem; border-collapse: collapse; font-size: .92rem; }
.result td { padding: .4rem 0; border-bottom: 1px solid var(--line); }
.result td:last-child { text-align: right; font-weight: 600; font-variant-numeric: tabular-nums; }

/* Campos opcionales y bloque plegable "Afinar el cálculo" */
.opt { font-weight: 400; color: var(--ink-soft); font-size: .82em; }
details.afinar { margin: .6rem 0 1.2rem; border: 1px solid var(--line); border-radius: var(--radius); padding: .2rem .9rem; }
details.afinar summary { cursor: pointer; font-weight: 600; padding: .7rem 0; font-size: .9rem; color: var(--accent-ink); }
details.afinar[open] summary { border-bottom: 1px solid var(--line); margin-bottom: .8rem; }

/* Semáforo del 30-35 % */
.semaforo { margin-top: 1rem; padding: .68rem .9rem; border-radius: 8px; font-size: .87rem; font-weight: 600; }
.semaforo.ok { background: rgba(36,70,58,.1); color: var(--accent-ink); }
.semaforo.warn { background: rgba(169,137,92,.16); color: #5c4726; }
.semaforo.bad { background: rgba(156,70,52,.12); color: var(--bad); }

/* Barra capital vs intereses */
.bar-chart { display: flex; width: 100%; height: 10px; border-radius: 5px; overflow: hidden; margin-top: 1.2rem; }
.bar-chart .seg.cap { background: var(--accent); }
.bar-chart .seg.int { background: var(--amber); }
.bar-legend { display: flex; gap: 1.2rem; margin-top: .5rem; font-size: .81rem; color: var(--ink-soft); }
.bar-legend .dot { position: relative; padding-left: 1.1rem; }
.bar-legend .dot::before { content: ""; position: absolute; left: 0; top: .3em; width: .65em; height: .65em; border-radius: 50%; }
.bar-legend .dot.cap::before { background: var(--accent); }
.bar-legend .dot.int::before { background: var(--amber); }

/* Aviso de amortización anticipada */
.callout { margin-top: 1.2rem; padding: .85rem 1rem; background: #fff; border-left: 3px solid var(--accent); border-radius: 0 8px 8px 0; font-size: .89rem; }

/* Tabla de amortización plegable */
.amort-detail { margin-top: 1.3rem; }
.amort-detail summary { cursor: pointer; font-weight: 600; color: var(--accent-ink); font-size: .87rem; }
.amort-table { overflow-x: auto; margin-top: .8rem; }
.amort-table table { width: 100%; border-collapse: collapse; font-size: .81rem; min-width: 420px; }
.amort-table th { text-align: right; padding: .4rem .5rem; border-bottom: 2px solid var(--line); font-size: .77rem; color: var(--ink-soft); }
.amort-table th:first-child, .amort-table td:first-child { text-align: left; }
.amort-table td { padding: .35rem .5rem; text-align: right; border-bottom: 1px solid var(--line); font-variant-numeric: tabular-nums; }

/* Compartir resultado */
.share-row { display: flex; gap: .6rem; margin-top: 1.3rem; flex-wrap: wrap; }
.btn-share { font-size: .84rem; padding: .55rem .9rem; border-radius: 7px; border: 1px solid var(--line); background: #fff; color: var(--ink); cursor: pointer; text-decoration: none; }
.btn-share.wa { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-share:hover { border-color: var(--accent); }

/* Checkboxes dentro de campos opcionales (IVA: retención IRPF, recargo de equivalencia) */
.field.check { display: flex; align-items: center; gap: .55rem; margin-bottom: .9rem; }
.field.check input[type="checkbox"] { width: auto; height: 1.1rem; accent-color: var(--accent); flex-shrink: 0; }
.field.check label { margin-bottom: 0; font-weight: 500; font-size: .9rem; cursor: pointer; }

/* Contenido editorial */
.article { margin-top: 2.6rem; max-width: 68ch; }
.article h2 { font-family: var(--font-display); font-weight: 600; font-size: 1.42rem; margin: 1.8rem 0 .6rem; letter-spacing: -0.008em; }
.article p, .article li { color: #423e35; }
.article ul { padding-left: 1.2rem; }
.disclaimer { margin-top: 2rem; font-size: .82rem; color: var(--ink-soft); border-left: 3px solid var(--line); padding-left: .9rem; }

/* Sidebar y anuncios */
aside.rail { display: flex; flex-direction: column; gap: 1.2rem; }
.ad-slot {
  min-height: 250px; border: 1px solid var(--line); border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: #b0a892; font-size: .76rem; letter-spacing: .12em; text-transform: uppercase;
  background: var(--paper-2);
}
.ad-slot.h { min-height: 100px; margin: 2rem 0; }
.related { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem 1.35rem; }
.related h3 { font-family: var(--font-display); font-size: 1.05rem; margin-bottom: .7rem; }
.related a { display: block; color: var(--accent-ink); text-decoration: none; padding: .35rem 0; font-size: .91rem; border-bottom: 1px solid var(--line); }
.related a:last-child { border-bottom: none; }
.related a:hover { color: var(--accent); }

/* Footer */
footer.site { border-top: 1px solid var(--line); background: var(--paper-2); padding: 2.2rem 0; margin-top: var(--space); }
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 1.5rem; justify-content: space-between; align-items: center; }
footer.site nav a { color: var(--ink-soft); text-decoration: none; font-size: .85rem; margin-right: 1.2rem; }
footer.site nav a:hover { color: var(--ink); }
footer.site .cc { color: var(--ink-soft); font-size: .85rem; }

/* Banner de consentimiento */
#consent {
  position: fixed; inset: auto 1rem 1rem 1rem; z-index: 100; max-width: 560px; margin: 0 auto;
  background: var(--ink); color: var(--paper); border-radius: var(--radius);
  padding: 1.2rem 1.4rem; box-shadow: 0 18px 44px -14px rgba(0,0,0,.45); display: none;
}
#consent.show { display: block; animation: rise .35s cubic-bezier(.16,1,.3,1); }
#consent p { font-size: .87rem; line-height: 1.5; margin-bottom: .8rem; }
#consent a { color: var(--amber); }
#consent .btns { display: flex; gap: .6rem; }
#consent button { flex: 1; padding: .6rem; border-radius: 7px; border: none; cursor: pointer; font-weight: 700; font-size: .89rem; }
#consent .ok { background: var(--amber); color: #fff; }
#consent .no { background: transparent; color: var(--paper); border: 1px solid rgba(248,246,242,.3); }

/* Página legal */
.legal { max-width: 68ch; padding: calc(var(--space) * .6) 0 var(--space); }
.legal h1 { font-family: var(--font-display); font-size: 2.1rem; font-weight: 600; margin-bottom: 1rem; }
.legal h2 { font-family: var(--font-display); font-size: 1.25rem; margin: 1.6rem 0 .5rem; }
.legal p, .legal li { color: #423e35; font-size: .96rem; }

/* Regla de tres — intercambiar A/C */
.btn-swap {
  margin-top: .4rem; display: inline-block; font-size: .78rem; font-weight: 600;
  color: var(--accent-ink); background: transparent; border: 1px solid var(--line);
  border-radius: 6px; padding: .3rem .6rem; cursor: pointer;
}
.btn-swap:hover { border-color: var(--accent); }

/* Regla de tres — error de validación */
.r3-error {
  padding: .9rem 1rem; background: rgba(156,70,52,.08); color: var(--bad);
  border-left: 3px solid var(--bad); border-radius: 0 8px 8px 0; font-size: .91rem; font-weight: 600;
}

/* Regla de tres — planteamiento visual */
.r3-diagram { margin-top: 1.2rem; padding: 1rem 1.1rem; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.r3-row { display: flex; align-items: baseline; gap: .6rem; font-variant-numeric: tabular-nums; font-size: 1.01rem; }
.r3-row + .r3-row { margin-top: .4rem; }
.r3-arrow { color: var(--amber); font-weight: 700; }
.r3-diagram.inversa .r3-arrow { color: var(--bad); }
.r3-val.r3-x { color: var(--accent-ink); font-weight: 700; }
.r3-nota { margin-top: .7rem; font-size: .82rem; color: var(--ink-soft); }

/* Regla de tres — historial de sesión */
.r3-historial { margin-top: 1rem; }
.hist-title { font-size: .8rem; color: var(--ink-soft); margin-bottom: .4rem; text-transform: uppercase; letter-spacing: .06em; }
.hist-list { display: flex; flex-direction: column; gap: .4rem; }
.hist-item {
  text-align: left; font-size: .85rem; padding: .5rem .7rem; border: 1px solid var(--line);
  border-radius: 7px; background: #fff; cursor: pointer; font-variant-numeric: tabular-nums; color: var(--ink);
}
.hist-item:hover { border-color: var(--accent); color: var(--accent-ink); }

/* Insignia "Mejor oferta" en el comparador de descuento.html */
.badge-mejor {
  display: inline-block; margin-left: .5rem; padding: .15rem .5rem;
  background: var(--accent); color: #fff; font-size: .71rem; font-weight: 700;
  border-radius: 999px; letter-spacing: .04em; text-transform: uppercase; vertical-align: middle;
}

/* Cuenta atrás en vivo (días-entre-fechas) */
.callout.cuenta-atras { font-variant-numeric: tabular-nums; font-weight: 600; }