/* Calculontas — hoja de estilo propia
   Identidad: fintech de confianza. Azul profundo + blanco + verde menta.
   Mobile-first. Números tabulares. */

:root {
  --azul: #0b2545;
  --azul-med: #13315c;
  --azul-claro: #eef3fb;
  --menta: #12b886;
  --menta-osc: #0ca678;
  --menta-suave: #e6f8f1;
  --tinta: #14213d;
  --gris: #5c6b82;
  --gris-borde: #d8e0ee;
  --gris-fondo: #f6f8fc;
  --blanco: #ffffff;
  --rojo: #e03131;
  --sombra: 0 1px 2px rgba(11, 37, 69, .06), 0 8px 24px rgba(11, 37, 69, .08);
  --radio: 14px;
  --radio-s: 10px;
  --fuente: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --num: "SF Mono", "Segoe UI", Consolas, ui-monospace, monospace;
  --ancho: 960px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--fuente);
  color: var(--tinta);
  background: var(--gris-fondo);
  line-height: 1.6;
  font-size: 17px;
}

/* ---------- Layout ---------- */
.contenedor { width: 100%; max-width: var(--ancho); margin: 0 auto; padding: 0 20px; }

main { display: block; }

section { margin: 0 auto; }

/* ---------- Header ---------- */
.cabecera {
  background: var(--azul);
  color: var(--blanco);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 2px 12px rgba(11, 37, 69, .18);
}
.cabecera .contenedor {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 62px;
  gap: 12px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 800;
  font-size: 1.22rem;
  color: var(--blanco);
  text-decoration: none;
  letter-spacing: -.02em;
}
.logo .emoji { font-size: 1.4rem; }
.logo .punto { color: var(--menta); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid rgba(255,255,255,.35);
  color: #fff;
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 1.1rem;
  cursor: pointer;
}
.nav-principal ul {
  display: flex;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}
.nav-principal a {
  color: #cfe0f5;
  text-decoration: none;
  padding: 7px 11px;
  border-radius: 8px;
  font-size: .95rem;
  font-weight: 500;
  transition: background .15s, color .15s;
}
.nav-principal a:hover, .nav-principal a[aria-current="page"] {
  background: var(--azul-med);
  color: #fff;
}

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav-principal {
    display: none;
    position: absolute;
    top: 62px; left: 0; right: 0;
    background: var(--azul-med);
    padding: 10px 20px 16px;
    box-shadow: 0 10px 20px rgba(0,0,0,.25);
  }
  .nav-principal.abierto { display: block; }
  .nav-principal ul { flex-direction: column; gap: 2px; }
  .nav-principal a { display: block; padding: 11px 12px; }
}

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(160deg, var(--azul) 0%, var(--azul-med) 100%);
  color: #fff;
  padding: 46px 0 40px;
}
.hero h1 { color: #fff; margin: 0 0 12px; }
.hero p.lead { color: #c8d8f0; font-size: 1.12rem; max-width: 640px; margin: 0; }
.hero .tag {
  display: inline-block;
  background: rgba(18,184,134,.18);
  color: #63e6be;
  border: 1px solid rgba(18,184,134,.4);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: .82rem;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: .02em;
}

/* ---------- Tipografía ---------- */
h1 { font-size: 2rem; line-height: 1.18; letter-spacing: -.025em; margin: 0 0 .5em; font-weight: 800; }
h2 { font-size: 1.45rem; letter-spacing: -.02em; margin: 1.8em 0 .6em; font-weight: 700; color: var(--azul); }
h3 { font-size: 1.12rem; margin: 1.4em 0 .4em; font-weight: 700; color: var(--azul-med); }
p { margin: 0 0 1em; }
a { color: var(--menta-osc); }
.contenido a { text-decoration: underline; text-underline-offset: 2px; }

@media (min-width: 700px) { h1 { font-size: 2.5rem; } }

/* ---------- Migas ---------- */
.migas { font-size: .85rem; color: var(--gris); padding: 14px 0 0; }
.migas a { color: var(--gris); text-decoration: none; }
.migas a:hover { text-decoration: underline; }

/* ---------- Tarjeta / calculadora ---------- */
.tarjeta {
  background: var(--blanco);
  border: 1px solid var(--gris-borde);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
  padding: 24px;
  margin: 22px 0;
}
.tarjeta > h2:first-child, .tarjeta > h3:first-child { margin-top: 0; }

.calc {
  background: var(--blanco);
  border: 1px solid var(--gris-borde);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
  overflow: hidden;
  margin: -30px 0 26px;
}
.calc.enlinea { margin: 26px 0; }
.calc-cabecera {
  background: var(--azul-claro);
  padding: 16px 22px;
  border-bottom: 1px solid var(--gris-borde);
}
.calc-cabecera h2, .calc-cabecera h3 { margin: 0; color: var(--azul); }
.calc-cuerpo { padding: 22px; }

.grid-campos { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 620px) { .grid-campos.dos { grid-template-columns: 1fr 1fr; } .grid-campos.tres { grid-template-columns: 1fr 1fr 1fr; } }

/* ---------- Formularios ---------- */
label { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 6px; color: var(--azul-med); }
.campo { margin-bottom: 0; }
.campo .pista { font-weight: 400; color: var(--gris); font-size: .8rem; display: block; margin-top: 4px; }

input[type="number"], input[type="text"], input[type="date"], select {
  width: 100%;
  padding: 12px 13px;
  font-size: 1.02rem;
  font-family: var(--fuente);
  border: 1.5px solid var(--gris-borde);
  border-radius: var(--radio-s);
  background: #fff;
  color: var(--tinta);
  transition: border-color .15s, box-shadow .15s;
  font-variant-numeric: tabular-nums;
}
input:focus, select:focus {
  outline: none;
  border-color: var(--menta);
  box-shadow: 0 0 0 3px var(--menta-suave);
}
.entrada-unidad { position: relative; }
.entrada-unidad .unidad {
  position: absolute; right: 13px; top: 50%; transform: translateY(-50%);
  color: var(--gris); font-size: .95rem; pointer-events: none; font-weight: 600;
}
.entrada-unidad input { padding-right: 40px; }

.radios { display: flex; flex-wrap: wrap; gap: 8px; }
.radios label {
  flex: 1; min-width: 120px; margin: 0;
  border: 1.5px solid var(--gris-borde); border-radius: var(--radio-s);
  padding: 10px 12px; cursor: pointer; font-weight: 500; text-align: center;
  transition: all .15s; background: #fff; position: relative;
}
.radios input { position: absolute; opacity: 0; }
.radios label:has(input:checked) {
  border-color: var(--menta); background: var(--menta-suave); color: var(--menta-osc); font-weight: 700;
}
.radios label:has(input:focus-visible) { box-shadow: 0 0 0 3px var(--menta-suave); }

.boton {
  display: inline-block; background: var(--menta); color: #062b20;
  border: none; border-radius: var(--radio-s); padding: 13px 22px;
  font-size: 1rem; font-weight: 700; cursor: pointer; font-family: var(--fuente);
  transition: background .15s, transform .05s;
}
.boton:hover { background: var(--menta-osc); color: #fff; }
.boton:active { transform: translateY(1px); }
.boton.sec { background: transparent; color: var(--azul-med); border: 1.5px solid var(--gris-borde); }
.boton.sec:hover { background: var(--azul-claro); color: var(--azul); }
.acciones { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 4px; }

/* ---------- Resultados ---------- */
.resultado {
  margin-top: 22px;
  background: var(--azul);
  color: #fff;
  border-radius: var(--radio);
  padding: 22px;
}
.resultado .principal { font-size: .9rem; color: #9fc0ec; margin: 0 0 4px; text-transform: uppercase; letter-spacing: .06em; font-weight: 600; }
.resultado .cifra { font-size: 2.3rem; font-weight: 800; font-variant-numeric: tabular-nums; letter-spacing: -.02em; line-height: 1.1; }
.resultado .cifra .moneda { font-size: 1.3rem; color: #9fc0ec; margin-left: 4px; }
.res-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 20px; margin-top: 18px; border-top: 1px solid rgba(255,255,255,.14); padding-top: 16px; }
@media (min-width: 620px) { .res-grid { grid-template-columns: repeat(3, 1fr); } }
.res-grid .item .et { font-size: .78rem; color: #9fc0ec; text-transform: uppercase; letter-spacing: .04em; display: block; margin-bottom: 2px; }
.res-grid .item .val { font-size: 1.15rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.res-grid .item .val.menta { color: #63e6be; }

.aviso-error {
  background: #fff4f4; border: 1px solid #ffc9c9; color: var(--rojo);
  padding: 11px 14px; border-radius: var(--radio-s); font-size: .92rem; margin-top: 14px;
}

/* ---------- Tabla amortización ---------- */
.tabla-envoltura { overflow-x: auto; margin-top: 16px; -webkit-overflow-scrolling: touch; }
table.datos {
  width: 100%; border-collapse: collapse; font-size: .9rem;
  font-variant-numeric: tabular-nums;
}
table.datos th, table.datos td { padding: 9px 12px; text-align: right; border-bottom: 1px solid var(--gris-borde); white-space: nowrap; }
table.datos th { background: var(--azul-claro); color: var(--azul); font-weight: 700; position: sticky; top: 0; }
table.datos th:first-child, table.datos td:first-child { text-align: left; }
table.datos tbody tr:hover { background: var(--gris-fondo); }
table.datos tfoot td { font-weight: 700; background: var(--menta-suave); color: var(--azul); border-top: 2px solid var(--menta); }

/* ---------- Grid tarjetas home ---------- */
.grid-tools { display: grid; gap: 16px; grid-template-columns: 1fr; margin: 20px 0; }
@media (min-width: 560px) { .grid-tools { grid-template-columns: 1fr 1fr; } }
@media (min-width: 860px) { .grid-tools { grid-template-columns: 1fr 1fr 1fr; } }
.tool-card {
  display: block; background: #fff; border: 1px solid var(--gris-borde);
  border-radius: var(--radio); padding: 20px; text-decoration: none; color: inherit;
  transition: transform .12s, box-shadow .12s, border-color .12s;
  box-shadow: 0 1px 2px rgba(11,37,69,.05);
}
.tool-card:hover { transform: translateY(-3px); box-shadow: var(--sombra); border-color: var(--menta); }
.tool-card .ico { font-size: 1.9rem; display: block; margin-bottom: 8px; }
.tool-card h3 { margin: 0 0 4px; color: var(--azul); }
.tool-card p { margin: 0; color: var(--gris); font-size: .92rem; }

/* ---------- Contenido ---------- */
.contenido { margin: 30px 0; }
.contenido ul, .contenido ol { padding-left: 22px; margin: 0 0 1em; }
.contenido li { margin-bottom: .4em; }
.contenido .formula {
  background: var(--azul-claro); border-left: 4px solid var(--menta);
  padding: 14px 18px; border-radius: 0 var(--radio-s) var(--radio-s) 0;
  font-family: var(--num); font-size: 1rem; margin: 1em 0; overflow-x: auto;
}
.contenido .ejemplo {
  background: var(--menta-suave); border: 1px solid #b2f2e0;
  border-radius: var(--radio-s); padding: 16px 18px; margin: 1.2em 0;
}
.contenido .ejemplo strong { color: var(--menta-osc); }

/* FAQ */
.faq details {
  background: #fff; border: 1px solid var(--gris-borde); border-radius: var(--radio-s);
  margin-bottom: 10px; padding: 0 16px; overflow: hidden;
}
.faq summary {
  cursor: pointer; padding: 15px 0; font-weight: 600; color: var(--azul-med);
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 10px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.4rem; color: var(--menta); font-weight: 400; flex: none; }
.faq details[open] summary::after { content: "\2212"; }
.faq details[open] { padding-bottom: 4px; }
.faq details > p { margin: 0 0 14px; color: var(--gris); }

/* ---------- Anuncios ---------- */
.adslot {
  margin: 26px 0; padding: 14px; text-align: center; min-height: 90px;
  background: repeating-linear-gradient(45deg, #f0f4fa, #f0f4fa 10px, #f6f9fd 10px, #f6f9fd 20px);
  border: 1px dashed var(--gris-borde); border-radius: var(--radio-s);
  color: #9fb0c8; font-size: .8rem; display: flex; align-items: center; justify-content: center;
}

/* ---------- Footer ---------- */
.pie {
  background: var(--azul); color: #b7c8e0; margin-top: 50px; padding: 40px 0 26px;
}
.pie a { color: #cfe0f5; text-decoration: none; }
.pie a:hover { text-decoration: underline; color: #fff; }
.pie-grid { display: grid; gap: 26px; grid-template-columns: 1fr; }
@media (min-width: 620px) { .pie-grid { grid-template-columns: 2fr 1fr 1fr; } }
.pie h4 { color: #fff; font-size: .95rem; margin: 0 0 12px; text-transform: uppercase; letter-spacing: .05em; }
.pie ul { list-style: none; margin: 0; padding: 0; }
.pie ul li { margin-bottom: 8px; font-size: .92rem; }
.pie .marca { font-weight: 800; font-size: 1.15rem; color: #fff; display: flex; align-items: center; gap: 8px; }
.pie .desc { font-size: .9rem; margin-top: 8px; max-width: 320px; }
.pie-legal { border-top: 1px solid rgba(255,255,255,.12); margin-top: 28px; padding-top: 18px; font-size: .82rem; color: #8ba1c0; }

/* ---------- Cookies ---------- */
.cookie-banner {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 100;
  background: var(--azul-med); color: #fff; padding: 16px 20px;
  box-shadow: 0 -6px 24px rgba(0,0,0,.25); display: none;
}
.cookie-banner.mostrar { display: block; }
.cookie-banner .contenedor { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; justify-content: space-between; }
.cookie-banner p { margin: 0; font-size: .9rem; color: #d7e3f5; max-width: 640px; }
.cookie-banner a { color: #9be7ce; }
.cookie-banner .btns { display: flex; gap: 8px; flex-wrap: wrap; }
.cookie-banner .boton { padding: 9px 16px; font-size: .9rem; }

/* ---------- Utilidades ---------- */
.centro { text-align: center; }
.oculto { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.mt-0 { margin-top: 0; }
.nota { font-size: .85rem; color: var(--gris); }
.pagina { padding-bottom: 20px; }
.pagina-cabecera { padding: 30px 0 6px; }