/* ecomalfa.es — hoja de estilos única. Sin dependencias ni webfonts externas
   (la velocidad puntúa: usamos la pila de fuentes del sistema). */

:root {
  --ink: #14181f;
  --ink-soft: #4a5462;
  --muted: #6b7684;
  --line: #e3e7ec;
  --bg: #ffffff;
  --bg-soft: #f6f8fa;
  --brand: #0b5fff;
  --brand-dark: #0847c4;
  --warn: #b45309;
  --warn-bg: #fffbeb;
  --warn-line: #f0c674;
  --radius: 10px;
  --wrap: 1080px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
}

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

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

.skip { position: absolute; left: -9999px; }
.skip:focus {
  left: 8px; top: 8px; z-index: 100; background: #fff; padding: 10px 14px;
  border: 2px solid var(--brand); border-radius: 6px;
}

/* ---------------------------------------------------------- cabecera */

.site-header {
  border-bottom: 1px solid var(--line); background: #fff;
  position: sticky; top: 0; z-index: 20;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; min-height: 60px;
}
.logo {
  font-weight: 700; font-size: 17px; color: var(--ink); letter-spacing: -.01em;
  display: inline-flex; align-items: center; gap: 8px; flex-shrink: 0;
}
.logo:hover { text-decoration: none; }
.logo-mark {
  display: inline-grid; place-items: center;
  width: 26px; height: 26px; border-radius: 7px;
  background: var(--ink); color: #fff; font-size: 15px; font-weight: 700;
}
.site-nav { display: flex; gap: 18px; align-items: center; }
.site-nav a { color: var(--ink-soft); font-size: 15px; font-weight: 500; white-space: nowrap; }
.site-nav a:hover { color: var(--brand); text-decoration: none; }
.nav-cta {
  background: var(--brand); color: #fff !important; padding: 7px 14px;
  border-radius: 7px; font-weight: 600; font-size: 14.5px;
}
.nav-cta:hover { background: var(--brand-dark); }

/* En móvil: cabecera de una sola línea. Antes ocupaba 1/3 de la pantalla. */
@media (max-width: 720px) {
  .header-inner { min-height: 54px; gap: 10px; }
  .logo { font-size: 16px; }
  .site-nav { gap: 0; }
  .site-nav a:not(.nav-cta) { display: none; }
  .nav-cta { padding: 8px 14px; font-size: 14px; }
}

/* ---------------------------------------------------------- estructura */

main { padding: 30px 0 56px; }

h1 { font-size: clamp(27px, 4vw, 40px); line-height: 1.15; letter-spacing: -.022em; margin: 0 0 14px; }
h2 { font-size: clamp(20px, 2.5vw, 25px); line-height: 1.28; letter-spacing: -.014em; margin: 44px 0 12px; }
h3 { font-size: 17.5px; margin: 24px 0 8px; letter-spacing: -.01em; }
p { margin: 0 0 15px; }

.lead { font-size: 18.5px; color: var(--ink-soft); margin-bottom: 24px; max-width: 66ch; }
.section-intro { color: var(--muted); font-size: 15.5px; margin: -6px 0 16px; max-width: 66ch; }
.doc { max-width: 76ch; }
.doc ul, .doc ol { margin: 0 0 20px; padding-left: 22px; }
.doc li { margin-bottom: 7px; }

.muted { color: var(--muted); }
.small { font-size: 14px; }

.crumbs { font-size: 14px; color: var(--muted); margin-bottom: 16px; }
.crumbs a { color: var(--muted); }

@media (max-width: 720px) {
  body { font-size: 16px; }
  .lead { font-size: 17px; }
  main { padding: 22px 0 44px; }
  h2 { margin-top: 34px; }
}

/* ---------------------------------------------------------- portada */

.hero { padding: 14px 0 26px; }
.hero-actions { display: flex; gap: 11px; flex-wrap: wrap; margin-top: 20px; }

.home-table {
  border: 1px solid var(--line); border-radius: 14px;
  padding: 26px 28px 24px; background: var(--bg-soft);
}
.home-table h2 { margin-top: 0; }
@media (max-width: 720px) { .home-table { padding: 20px 16px; border-radius: 10px; } }

.btn {
  display: inline-block; background: var(--brand); color: #fff;
  padding: 12px 22px; border-radius: 8px; font-weight: 600; font-size: 16px;
  border: 1px solid var(--brand); cursor: pointer;
}
.btn:hover { background: var(--brand-dark); border-color: var(--brand-dark); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--brand); }
.btn-ghost:hover { background: #fff; }

/* ---------------------------------------------------------- cifras clave */

.tiles {
  display: grid; gap: 12px; margin: 24px 0 10px;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}
.tile {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px; background: var(--bg-soft);
  display: flex; flex-direction: column; gap: 3px;
}
.tile-label {
  font-size: 12.5px; text-transform: uppercase; letter-spacing: .07em;
  color: var(--muted); font-weight: 600;
}
.tile-value {
  font-size: 25px; line-height: 1.15; letter-spacing: -.02em;
  font-variant-numeric: tabular-nums; color: var(--ink);
}
.tile-note { font-size: 13.5px; color: var(--muted); line-height: 1.45; margin-top: 2px; }

.verified { font-size: 14px; color: var(--muted); margin-bottom: 26px; }

/* ---------------------------------------------------------- avisos */

.alert {
  border: 1px solid var(--line); border-left: 3px solid var(--brand);
  background: var(--bg-soft); border-radius: 0 8px 8px 0;
  padding: 14px 18px; margin: 0 0 10px;
}
.alert p { margin: 0; font-size: 16px; }
.alert-warn {
  background: var(--warn-bg); border-color: var(--warn-line); border-left-color: var(--warn);
}
.alert-warn p { color: #7c4a05; }

/* ---------------------------------------------------------- tarjetas */

.cards {
  display: grid; gap: 13px; margin: 18px 0 10px;
  grid-template-columns: repeat(auto-fill, minmax(255px, 1fr));
}
.card {
  display: block; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px; color: var(--ink); background: #fff;
  transition: border-color .12s ease, transform .12s ease;
}
.card:hover { border-color: var(--brand); text-decoration: none; transform: translateY(-1px); }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0 0 10px; font-size: 15px; color: var(--ink-soft); }
.card-meta { font-size: 13.5px; color: var(--brand); font-weight: 600; }

.linklist { list-style: none; padding: 0; margin: 12px 0; }
.linklist li { padding: 9px 0; border-bottom: 1px solid var(--line); }

/* ---------------------------------------------------------- tablas */

.table-wrap { overflow-x: auto; margin: 16px 0 10px; -webkit-overflow-scrolling: touch; }
/* min-width para que en móvil la tabla haga scroll horizontal en lugar de
   aplastarse a una palabra por línea. */
table { border-collapse: collapse; width: 100%; min-width: 420px; font-size: 15.5px; background: #fff; }
table.wide { min-width: 620px; }
table td:first-child { min-width: 160px; }
caption { caption-side: top; text-align: left; font-size: 14px; color: var(--muted); padding-bottom: 8px; }
th {
  text-align: left; background: var(--ink); color: #fff; font-weight: 600;
  padding: 11px 14px; font-size: 14px; white-space: nowrap;
}
td { padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:nth-child(even) td { background: var(--bg-soft); }
td.num { font-variant-numeric: tabular-nums; white-space: nowrap; font-weight: 600; }
.row-sub { display: block; font-size: 13px; color: var(--muted); font-weight: 400; margin-top: 2px; }

.note {
  font-size: 14px; color: var(--muted); background: transparent;
  border-left: 3px solid var(--line); padding: 8px 14px; margin: 10px 0 0;
}

/* ---------------------------------------------------------- detalle comparativa */

.detail-row { border-top: 1px solid var(--line); padding: 18px 0; }
.detail-row h3 { margin: 0 0 10px; }
.detail-row dl { margin: 0; display: grid; gap: 8px; }
.detail-row dl > div { display: grid; grid-template-columns: 160px 1fr; gap: 14px; }
.detail-row dt { font-weight: 600; color: var(--ink-soft); font-size: 15px; }
.detail-row dd { margin: 0; font-size: 15px; color: var(--ink-soft); }
@media (max-width: 620px) {
  .detail-row dl > div { grid-template-columns: 1fr; gap: 2px; }
}

/* ---------------------------------------------------------- CTA */

.cta {
  border: 1px solid var(--line); border-radius: 12px;
  padding: 26px 28px; margin: 40px 0 0; background: var(--bg-soft);
}
.cta h2 { margin: 0 0 8px; font-size: 21px; }
.cta p { margin: 0 0 18px; color: var(--ink-soft); max-width: 62ch; }
.cta-inline { background: #f0f6ff; border-color: #cfe0ff; margin: 36px 0; }
@media (max-width: 720px) { .cta { padding: 20px; } }

/* ---------------------------------------------------------- FAQ */

.faq details {
  border: 1px solid var(--line); border-radius: 8px;
  padding: 0 16px; margin-bottom: 8px; background: #fff;
}
.faq summary {
  cursor: pointer; font-weight: 600; padding: 14px 0; list-style: none;
  display: flex; justify-content: space-between; gap: 12px; align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--muted); font-size: 20px; font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding-bottom: 14px; margin: 0; color: var(--ink-soft); }

.sources { font-size: 14px; word-break: break-word; }
.sources a { color: var(--ink-soft); }

/* ---------------------------------------------------------- formulario */

.two-col { display: grid; gap: 34px; grid-template-columns: 1fr 1fr; align-items: start; }
@media (max-width: 780px) { .two-col { grid-template-columns: 1fr; } }

.lead-form {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; background: var(--bg-soft);
}
.lead-form label { display: block; margin-bottom: 15px; font-size: 14.5px; font-weight: 600; color: var(--ink-soft); }
.lead-form input[type=text], .lead-form input[type=email], .lead-form input[type=url], .lead-form textarea {
  width: 100%; margin-top: 6px; padding: 11px 13px; font: inherit; font-size: 16px;
  border: 1px solid var(--line); border-radius: 7px; background: #fff; font-weight: 400;
}
.lead-form input:focus, .lead-form textarea:focus {
  outline: 2px solid var(--brand); outline-offset: 1px; border-color: var(--brand);
}
.lead-form .check { display: flex; gap: 9px; align-items: flex-start; font-weight: 400; font-size: 14px; }
.lead-form .check input { margin-top: 3px; }
.lead-form button { width: 100%; margin-top: 6px; }

/* ---------------------------------------------------------- pie */

.site-footer {
  border-top: 1px solid var(--line); background: var(--bg-soft);
  padding: 32px 0; margin-top: 48px; font-size: 15px;
}
.footer-inner { display: grid; gap: 16px; }
.footer-nav { display: flex; gap: 16px; flex-wrap: wrap; }
.footer-nav a { color: var(--ink-soft); font-size: 14.5px; }
.site-footer p { margin: 6px 0 0; }

/* ---------------------------------------------------------- modo oscuro */

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e8ecf1; --ink-soft: #b3bdc9; --muted: #8b95a3;
    --line: #2a323d; --bg: #12161c; --bg-soft: #1a1f27;
    --brand: #6ea8ff; --brand-dark: #8bbaff;
    --warn: #f0b429; --warn-bg: #241d0d; --warn-line: #6b5417;
  }
  body { background: var(--bg); color: var(--ink); }
  .site-header, .card, .faq details, table, .lead-form input, .lead-form textarea { background: #171c23; }
  .logo { color: var(--ink); }
  .logo-mark { background: var(--brand); color: #0d1117; }
  .nav-cta, .btn { color: #0d1117 !important; }
  .btn-ghost { background: transparent; color: var(--brand) !important; }
  .btn-ghost:hover { background: #171c23; }
  th { background: #232b36; }
  .cta-inline { background: #182233; border-color: #2c3d55; }
  .alert-warn p { color: #f5d78e; }
  .skip:focus { background: #171c23; }
}