/* ============================================================
   CalcYa — hoja de estilos compartida por todas las páginas.
   Sistema de diseño: espaciados, radios, sombras y color únicos,
   reutilizados por header, footer, tarjetas, formularios y resultado.
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #F7F8FA;
  --surface: #FFFFFF;
  --border: #E5E7EB;
  --border2: #D1D5DB;
  --text: #111827;
  --muted: #6B7280;
  --dim: #9CA3AF;
  --blue: #2563EB;
  --blue-soft: #EFF6FF;
  --blue-mid: #DBEAFE;
  --green: #059669;
  --green-soft: #ECFDF5;
  --red: #DC2626;
  --r: 10px;
  --rl: 16px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
  font-family: 'DM Sans', ui-sans-serif, system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

body { min-width: 0; overflow-x: hidden; }

a { color: inherit; }

/* ---- skip link ---- */
.skip-link {
  position: absolute; left: 12px; top: -48px;
  background: var(--blue); color: #fff; padding: 10px 16px;
  border-radius: 8px; font-size: 13px; font-weight: 600;
  text-decoration: none; z-index: 100; transition: top .15s;
}
.skip-link:focus { top: 12px; }

/* ---- layout ---- */
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 680px; }

/* ---- header ---- */
header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 40;
}
.hdr-in {
  min-height: 58px;
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 8px 0;
}
.logo {
  display: flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 18px; letter-spacing: -.03em;
  color: var(--text); text-decoration: none;
}
.logo-mark {
  width: 30px; height: 30px;
  background: var(--blue); border-radius: 8px;
  display: grid; place-items: center; flex-shrink: 0;
}
.logo-mark svg { display: block; }
nav.main-nav { display: flex; gap: 2px; margin-left: 10px; flex-wrap: wrap; }
.nav-link {
  padding: 6px 11px; border-radius: 8px;
  font-size: 14px; font-weight: 500; color: var(--muted);
  text-decoration: none; transition: color .15s, background .15s;
}
.nav-link:hover { color: var(--text); background: var(--bg); }
.nav-link:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.nav-link.on { color: var(--blue); }
.spacer { flex: 1; }

/* ---- breadcrumb (páginas de calculadora) ---- */
.breadcrumb {
  padding: 14px 0; font-size: 13px; color: var(--muted);
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
}
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb span[aria-current] { color: var(--text); font-weight: 600; }

/* ---- hero (home) ---- */
.hero { padding: 52px 0 36px; }
.hero h1 {
  font-size: clamp(28px, 5.5vw, 46px);
  font-weight: 700; letter-spacing: -.03em; line-height: 1.1;
  max-width: 18ch;
}
.hero h1 span { color: var(--blue); }
.hero p.lead { color: var(--muted); font-size: 17px; margin-top: 14px; max-width: 52ch; }
.eyebrow { font-size: 12px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--blue); margin-bottom: 10px; }

/* ---- hero de calculadora individual ---- */
.calc-hero { padding: 28px 0 8px; display: flex; align-items: flex-start; gap: 14px; }
.calc-hero .card-icon { width: 44px; height: 44px; flex-shrink: 0; }
.calc-hero h1 { font-size: clamp(22px, 4vw, 30px); font-weight: 700; letter-spacing: -.02em; line-height: 1.2; }
.calc-hero p { color: var(--muted); font-size: 15px; margin-top: 6px; max-width: 60ch; }

/* ---- búsqueda ---- */
.search-wrap { margin-top: 26px; position: relative; max-width: 480px; }
.search-wrap svg { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--dim); pointer-events: none; }
#search {
  width: 100%; height: 48px; padding: 0 16px 0 44px;
  border: 1px solid var(--border2); border-radius: var(--rl);
  background: var(--surface); font: inherit; font-size: 15px;
  outline: none; transition: border-color .15s, box-shadow .15s;
}
#search:focus { border-color: var(--blue); box-shadow: 0 0 0 3px var(--blue-mid); }
#search::placeholder { color: var(--dim); }

/* ---- filtros ---- */
.filters { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; scrollbar-width: none; margin-top: 32px; }
.filters::-webkit-scrollbar { display: none; }
.chip {
  flex: none; height: 34px; padding: 0 14px;
  border: 1px solid var(--border2); border-radius: 999px;
  font: inherit; font-size: 13px; font-weight: 500; color: var(--muted);
  background: var(--surface); cursor: pointer;
  transition: all .15s; white-space: nowrap;
}
.chip:hover { border-color: var(--blue); color: var(--blue); }
.chip:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.chip.on { background: var(--blue); border-color: var(--blue); color: #fff; }

/* ---- encabezados de sección (home) ---- */
.popular-section { padding: 36px 0 0; }
.popular-section h2,
.grid-section h2 { font-size: 20px; font-weight: 700; letter-spacing: -.01em; }
.grid-popular { margin-top: 16px; }

/* ---- grid de calculadoras ---- */
.grid-section { padding: 40px 0 52px; }
.grid { display: grid; gap: 14px; grid-template-columns: 1fr; }
@media (min-width: 540px) { .grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 900px) { .grid { grid-template-columns: 1fr 1fr 1fr; } }

.calc-card {
  display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--rl); padding: 20px;
  cursor: pointer; text-decoration: none; color: inherit;
  transition: border-color .18s, box-shadow .18s, transform .18s;
  box-shadow: var(--shadow);
}
.calc-card:hover { border-color: var(--blue); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.calc-card:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

.card-icon {
  width: 40px; height: 40px; border-radius: 10px;
  display: grid; place-items: center; margin-bottom: 14px; flex-shrink: 0;
}
.card-icon svg { display: block; }

.card-cat {
  font-size: 10.5px; font-weight: 600; letter-spacing: .08em;
  text-transform: uppercase; margin-bottom: 6px;
}
.calc-card h3 { font-size: 16px; font-weight: 600; letter-spacing: -.01em; line-height: 1.25; }
.calc-card p { color: var(--muted); font-size: 13px; margin-top: 6px; line-height: 1.5; flex: 1; }
.card-cta {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 16px; font-size: 13px; font-weight: 600; color: var(--blue);
}
.card-cta svg { transition: transform .15s; }
.calc-card:hover .card-cta svg { transform: translateX(3px); }

/* ---- panel de calculadora (contenido de cada página individual) ---- */
.calc-panel {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--rl); box-shadow: var(--shadow-md);
  overflow: hidden; margin-bottom: 20px;
}

.panel-body { padding: 24px 20px; }
.panel-grid { display: grid; gap: 0; }
@media (min-width: 700px) { .panel-grid { grid-template-columns: 1fr 1fr; gap: 0 32px; } }

/* ---- campos ---- */
.field { margin-bottom: 18px; }
label.lbl { display: block; font-size: 13px; font-weight: 600; margin-bottom: 7px; }
.lbl-note { font-size: 12px; font-weight: 400; color: var(--muted); margin-left: 6px; }
input[type=number], input[type=text], input[type=date], select {
  width: 100%; height: 44px; padding: 0 13px;
  border: 1px solid var(--border2); border-radius: var(--r);
  background: var(--surface); font: inherit; font-size: 15px; color: var(--text);
  outline: none; transition: border-color .15s, box-shadow .15s;
  -moz-appearance: textfield;
}
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button { -webkit-appearance: none; }
input:focus, select:focus { border-color: var(--blue); box-shadow: 0 0 0 3px var(--blue-mid); }
.field-note { font-size: 12px; color: var(--muted); margin-top: 5px; }
.field-check { display: flex; align-items: center; gap: 10px; }
.field-check input[type=checkbox] { width: 18px; height: 18px; accent-color: var(--blue); flex-shrink: 0; }
.field-check label { font-size: 14px; font-weight: 500; cursor: pointer; }

/* segmentado */
.seg { display: flex; border: 1px solid var(--border2); border-radius: var(--r); overflow: hidden; }
.seg button {
  flex: 1; height: 44px; border: none; background: var(--surface);
  font: inherit; font-size: 13px; font-weight: 500; color: var(--muted);
  cursor: pointer; transition: background .12s, color .12s;
  border-right: 1px solid var(--border2);
}
.seg button:last-child { border-right: none; }
.seg button:focus-visible { outline: 2px solid var(--blue); outline-offset: -2px; }
.seg button.on { background: var(--blue); color: #fff; font-weight: 600; }

/* botón calcular */
.btn-calc {
  display: inline-flex; align-items: center; gap: 8px;
  height: 46px; padding: 0 24px; border-radius: var(--r);
  background: var(--blue); color: #fff; border: none;
  font: inherit; font-size: 15px; font-weight: 600; cursor: pointer;
  transition: filter .15s, transform .12s;
  margin-top: 8px;
}
.btn-calc:hover { filter: brightness(1.1); }
.btn-calc:active { transform: translateY(1px); }
.btn-calc:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }

/* ---- resultado ---- */
.result-box {
  background: #064E3B; border-radius: var(--r);
  padding: 22px 20px; margin-top: 24px;
  animation: fadeUp .25s ease-out both;
}
@keyframes fadeUp { from { opacity: 0; transform: translateY(6px); } }

.result-main {
  font-family: 'DM Mono', ui-monospace, monospace;
  font-size: clamp(32px, 7vw, 52px); font-weight: 500;
  color: #ECFDF5; letter-spacing: -.03em; line-height: 1;
  word-break: break-word;
}
.result-label { font-size: 13px; font-weight: 600; color: #6EE7B7; margin-bottom: 8px; letter-spacing: .05em; text-transform: uppercase; }
.result-rows { margin-top: 18px; display: flex; flex-direction: column; gap: 0; }
.result-row {
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px;
  padding: 9px 0; border-bottom: 1px solid rgba(255,255,255,.08);
  font-size: 14px;
}
.result-row:last-child { border-bottom: none; }
.result-row .rk { color: #A7F3D0; }
.result-row .rv { font-family: 'DM Mono', monospace; font-size: 15px; color: #ECFDF5; font-weight: 500; text-align: right; }
.result-note { margin-top: 16px; font-size: 12.5px; color: #6EE7B7; line-height: 1.55; }

/* botones resultado */
.result-actions { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.btn-copy {
  display: inline-flex; align-items: center; gap: 6px;
  height: 34px; padding: 0 14px; border-radius: 8px;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.15);
  color: #ECFDF5; font: inherit; font-size: 13px; cursor: pointer;
  transition: background .15s;
}
.btn-copy:hover { background: rgba(255,255,255,.18); }
.btn-copy:focus-visible { outline: 2px solid #6EE7B7; outline-offset: 2px; }

/* ---- afiliado ---- */
.aff-box {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--blue-soft); border: 1px solid var(--blue-mid);
  border-radius: var(--r); padding: 14px 16px; margin-top: 14px;
}
.aff-box svg { color: var(--blue); flex-shrink: 0; margin-top: 2px; }
.aff-box p { font-size: 13px; color: #1E40AF; line-height: 1.5; }
.aff-box a { font-weight: 600; color: var(--blue); text-decoration: underline; text-underline-offset: 2px; }

/* ---- sección info / método / FAQ ---- */
.info-section { padding: 12px 20px 20px; border-top: 1px solid var(--border); background: var(--bg); }
.info-section h2 { font-size: 14px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.method-box { padding-top: 14px; }
.method-box p { font-size: 13.5px; color: var(--muted); line-height: 1.6; }
.faq details { border-bottom: 1px solid var(--border); }
.faq details:first-child { border-top: 1px solid var(--border); }
.faq summary {
  padding: 11px 0; font-size: 14px; font-weight: 600;
  cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 12px;
}
.faq summary:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; color: var(--muted); font-weight: 400; flex-shrink: 0; }
details[open] summary::after { content: '−'; }
.faq p { font-size: 13.5px; color: var(--muted); padding-bottom: 12px; line-height: 1.6; }

/* ---- calculadoras relacionadas ---- */
.related { margin-top: 20px; }
.related h2 { font-size: 15px; font-weight: 700; margin-bottom: 12px; }
.related-grid { display: grid; gap: 10px; grid-template-columns: 1fr; }
@media (min-width: 540px) { .related-grid { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); } }
.related-card {
  display: flex; align-items: center; gap: 10px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r); padding: 12px 14px;
  text-decoration: none; color: var(--text); font-size: 14px; font-weight: 600;
  transition: border-color .15s, box-shadow .15s;
}
.related-card:hover { border-color: var(--blue); box-shadow: var(--shadow); }
.related-card:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

/* ---- volver ---- */
.back-link { display: inline-flex; align-items: center; gap: 6px; margin: 20px 0; font-size: 14px; font-weight: 600; color: var(--blue); text-decoration: none; }
.back-link:hover { text-decoration: underline; }
.back-link:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

/* ---- espacio publicitario ---- */
.ad-slot {
  background: var(--surface); border: 1px dashed var(--border2);
  border-radius: var(--r); padding: 16px; text-align: center;
  color: var(--muted); font-size: 12px; margin: 20px 0;
}
.ad-slot-banner { min-height: 90px; display: grid; place-items: center; }
.ad-slot-rect { min-height: 250px; display: grid; place-items: center; }

/* ---- footer ---- */
footer { background: var(--surface); border-top: 1px solid var(--border); padding: 36px 0 48px; margin-top: 20px; }
.foot-grid { display: grid; gap: 28px; }
@media (min-width: 640px) { .foot-grid { grid-template-columns: 2fr 1fr 1fr; } }
.foot-logo { font-weight: 700; font-size: 16px; color: var(--text); letter-spacing: -.02em; }
footer p { color: var(--muted); font-size: 13.5px; margin-top: 8px; max-width: 30ch; }
.foot-col h2 { font-size: 12px; font-weight: 600; letter-spacing: .07em; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; }
.foot-col a { display: block; font-size: 14px; color: var(--muted); text-decoration: none; margin-bottom: 8px; transition: color .15s; }
.foot-col a:hover { color: var(--blue); }
.foot-col a:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.foot-bottom { border-top: 1px solid var(--border); padding-top: 20px; margin-top: 28px; display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.foot-bottom span { font-size: 13px; color: var(--muted); }
.foot-legal-link {
  font: inherit; font-size: 13px; font-weight: 600; color: var(--blue);
  text-decoration: none; background: none; border: none; padding: 0; cursor: pointer;
}
.foot-legal-link:hover { text-decoration: underline; }
.foot-legal-link:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

/* ---- páginas de contenido legal ---- */
.legal-page { padding: 32px 0 60px; }
.legal-page h1 { font-size: clamp(24px, 4vw, 32px); font-weight: 700; letter-spacing: -.02em; margin-bottom: 6px; }
.legal-updated { color: var(--muted); font-size: 13px; margin-bottom: 28px; }
.legal-page h2 { font-size: 17px; font-weight: 700; margin: 28px 0 10px; letter-spacing: -.01em; }
.legal-page p { color: var(--muted); font-size: 14.5px; line-height: 1.7; margin-bottom: 4px; }
.legal-page a { color: var(--blue); text-decoration: underline; text-underline-offset: 2px; }
.legal-page code { font-family: 'DM Mono', ui-monospace, monospace; font-size: 13px; background: var(--bg); border: 1px solid var(--border); border-radius: 4px; padding: 1px 5px; }

/* ---- aviso de cookies ---- */
.cookie-banner {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 120;
  background: var(--surface); border-top: 1px solid var(--border);
  box-shadow: 0 -4px 16px rgba(0,0,0,.08);
}
.cookie-banner-inner {
  max-width: 1080px; margin: 0 auto; padding: 16px 20px;
  display: flex; gap: 16px; align-items: center; flex-wrap: wrap;
}
.cookie-banner-inner p { flex: 1; min-width: 240px; font-size: 13.5px; color: var(--muted); line-height: 1.55; margin: 0; }
.cookie-banner-inner a { color: var(--blue); text-decoration: underline; text-underline-offset: 2px; }
.cookie-banner-actions { display: flex; gap: 10px; flex-shrink: 0; }
.btn-cookie {
  height: 40px; padding: 0 18px; border-radius: var(--r);
  font: inherit; font-size: 14px; font-weight: 600; cursor: pointer;
  transition: filter .15s, background .15s;
}
.btn-cookie-reject { background: var(--surface); border: 1px solid var(--border2); color: var(--text); }
.btn-cookie-reject:hover { background: var(--bg); }
.btn-cookie-accept { background: var(--blue); border: 1px solid var(--blue); color: #fff; }
.btn-cookie-accept:hover { filter: brightness(1.1); }
.btn-cookie:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
@media (max-width: 640px) {
  .cookie-banner-inner { flex-direction: column; align-items: stretch; }
  .cookie-banner-actions { justify-content: stretch; }
  .btn-cookie { flex: 1; }
}

/* ---- toast ---- */
.toast {
  position: fixed; left: 50%; bottom: 24px;
  transform: translateX(-50%);
  background: var(--text); color: #fff;
  padding: 10px 18px; border-radius: 999px;
  font-size: 13px; font-weight: 600;
  box-shadow: 0 8px 24px rgba(0,0,0,.2);
  z-index: 99; animation: toastIn .2s ease-out;
  pointer-events: none;
}
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, 8px); } }

/* no results */
.no-results { text-align: center; padding: 40px 0; color: var(--muted); }
.no-results strong { display: block; font-size: 17px; color: var(--text); margin-bottom: 6px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}