/*
 * BudgetMate — hoja de estilos del sitio.
 *
 * Dos reglas que no son de gusto, son de arquitectura:
 *
 * 1. PROPIEDADES LÓGICAS, NUNCA left/right. Dos de los 11 idiomas de la app (ar, ur) son RTL y el
 *    layout tiene que girar con `dir="rtl"` sin una hoja aparte ni un `[dir=rtl]` por regla. Eso
 *    significa `margin-inline-start` en vez de `margin-left`, `padding-inline`, `inset-inline`,
 *    `border-inline-start` y `text-align: start/end` — nunca `left`/`right`.
 *
 * 2. Los tokens de color son los MISMOS que llevan embebidos los cuatro .html legales. Esas
 *    páginas son copias byte a byte de la fuente de verdad y no se pueden reestilar desde aquí, así
 *    que la continuidad visual se consigue copiando su paleta, no tocando sus archivos.
 */

:root {
  --bg: #ffffff;
  --fg: #1a1c1e;
  --muted: #5a6068;
  --line: #e3e6ea;
  --accent: #3d4fd8;
  --accent-fg: #ffffff;
  --soft: #f5f7fa;
  --ok: #0f7b4f;

  --wrap: 68rem;
  --narrow: 46rem;
  --radius: 10px;
  --step: clamp(1rem, 0.6rem + 1.6vw, 1.5rem);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171b;
    --fg: #e6e8eb;
    --muted: #9aa1aa;
    --line: #2a2f36;
    --accent: #93a4ff;
    --accent-fg: #15171b;
    --soft: #1c2026;
    --ok: #5fd3a0;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* El salto de ancla no debe quedar debajo de la cabecera pegajosa. */
:target { scroll-margin-block-start: 5rem; }

h1, h2, h3 { line-height: 1.25; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.9rem, 1.4rem + 2.2vw, 2.8rem); margin: 0 0 0.75rem; }
h2 { font-size: clamp(1.3rem, 1.1rem + 0.8vw, 1.6rem); margin: 2.5rem 0 0.75rem; }
h3 { font-size: 1.1rem; margin: 1.75rem 0 0.5rem; }
p, li { margin: 0 0 0.9rem; }

a { color: var(--accent); text-decoration: underline; text-underline-offset: 0.15em; }
a:hover { text-decoration-thickness: 2px; }

.muted { color: var(--muted); }
.small { font-size: 0.9rem; }
.lede { font-size: 1.12rem; color: var(--muted); max-width: var(--narrow); }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: 1.25rem; }
.wrap.narrow { max-width: var(--narrow); }

/* ---------- Accesibilidad ---------- */

.skip {
  position: absolute;
  inset-inline-start: -9999px;
}
.skip:focus {
  inset-inline-start: 1rem;
  inset-block-start: 1rem;
  z-index: 10;
  background: var(--accent);
  color: var(--accent-fg);
  padding: 0.6rem 1rem;
  border-radius: var(--radius);
  text-decoration: none;
}

:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* ---------- Cabecera ---------- */

.site-head {
  position: sticky;
  inset-block-start: 0;
  z-index: 5;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-block-end: 1px solid var(--line);
}

.head-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  padding-block: 0.75rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--fg);
  margin-inline-end: auto;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 1.9rem;
  height: 1.9rem;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-fg);
  font-weight: 700;
}

.site-nav { display: flex; gap: 1rem; flex-wrap: wrap; }
.site-nav a { color: var(--fg); text-decoration: none; font-weight: 500; }
.site-nav a:hover { color: var(--accent); }
.site-nav a[aria-current="page"] {
  color: var(--accent);
  border-block-end: 2px solid var(--accent);
}

.lang-switch { display: flex; gap: 0.6rem; font-size: 0.9rem; align-items: center; }
.lang-switch .on { color: var(--muted); font-weight: 600; }

/* ---------- Secciones ---------- */

.hero { padding-block: clamp(3rem, 2rem + 5vw, 5.5rem) 2.5rem; }
.hero .lede { font-size: 1.22rem; }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-block: 1.75rem 1rem;
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: var(--accent-fg); }
.btn-ghost { border-color: var(--line); color: var(--fg); background: var(--soft); }

.badge-soon {
  margin: 0;
  align-self: center;
  padding: 0.55rem 0.9rem;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 0.92rem;
}

.section-title { margin-block-start: 0; }
.section-lede { color: var(--muted); max-width: var(--narrow); }

.grid-3, .grid-2 { display: grid; gap: var(--step); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr)); }

.pillars { padding-block: 1rem 3rem; }

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  background: var(--soft);
}
.card h2 { font-size: 1.15rem; margin-block: 0 0.5rem; }
.card p:last-child { margin-block-end: 0; }
.card-icon { font-size: 1.6rem; margin: 0 0 0.5rem; }

.features { padding-block: 3rem; border-block-start: 1px solid var(--line); }
.feature h3 { margin-block-start: 0; }
.feature-link { font-size: 0.93rem; }

.privacy { padding-block: 3rem; border-block-start: 1px solid var(--line); background: var(--soft); }

.check-list { list-style: none; padding-inline-start: 0; }
.check-list li {
  padding-inline-start: 1.75rem;
  position: relative;
}
.check-list li::before {
  content: "✓";
  position: absolute;
  inset-inline-start: 0;
  color: var(--ok);
  font-weight: 700;
}

.note {
  border-inline-start: 3px solid var(--accent);
  background: var(--bg);
  padding: 1rem 1.1rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-block: 1.5rem;
}
.note p:last-child { margin-block-end: 0; }

/* El radio del aviso también tiene que girar en RTL. */
[dir="rtl"] .note { border-radius: var(--radius) 0 0 var(--radius); }

.closing { padding-block: 3.5rem; border-block-start: 1px solid var(--line); }

/* ---------- Manual ---------- */

.doc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--step);
  padding-block: 2.5rem 4rem;
}

@media (min-width: 60rem) {
  .doc-layout { grid-template-columns: 15rem minmax(0, 1fr); }
  .toc {
    position: sticky;
    inset-block-start: 5rem;
    align-self: start;
    max-height: calc(100vh - 7rem);
    overflow-y: auto;
  }
}

.toc-title { font-weight: 700; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
.toc ol { padding-inline-start: 1.2rem; font-size: 0.94rem; }
.toc li { margin-block-end: 0.4rem; }
.toc a { color: var(--fg); text-decoration: none; }
.toc a:hover { color: var(--accent); text-decoration: underline; }

.doc { max-width: var(--narrow); }
.doc-head { border-block-end: 1px solid var(--line); padding-block-end: 1.25rem; margin-block-end: 1rem; }
.doc-section { padding-block-end: 0.5rem; }

.steps { padding-inline-start: 1.4rem; }
.steps li { margin-block-end: 0.5rem; }

.shot { margin: 1.5rem 0; }
.shot img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.shot figcaption { color: var(--muted); font-size: 0.9rem; margin-block-start: 0.5rem; }

.doc-foot { margin-block-start: 3rem; padding-block-start: 1.25rem; border-block-start: 1px solid var(--line); color: var(--muted); }

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

.faq-group { margin-block-end: 2.5rem; }

.qa {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-block-end: 0.6rem;
  background: var(--soft);
}
.qa summary {
  cursor: pointer;
  padding: 0.9rem 1.1rem;
  font-weight: 600;
  list-style-position: inside;
}
.qa[open] summary { border-block-end: 1px solid var(--line); }
.qa-body { padding: 1rem 1.1rem; background: var(--bg); border-radius: 0 0 var(--radius) var(--radius); }
.qa-body p:last-child { margin-block-end: 0; }
.qa-link { font-size: 0.93rem; }

/* Solo se ve en desarrollo: un manualAnchor que no existe. */
.qa-broken { color: #b4231b; font-size: 0.9rem; font-weight: 600; }

.faq-fallback { margin-block: 3rem 4rem; padding-block-start: 1.5rem; border-block-start: 1px solid var(--line); }

/* ---------- Legal (índice) y 404 ---------- */

.legal-langs { margin-block: 2.5rem; }
.error-page { padding-block: 4rem 5rem; }

/* ---------- Pie ---------- */

.site-foot { border-block-start: 1px solid var(--line); background: var(--soft); padding-block: 2.5rem 1.5rem; }
.foot-grid { display: grid; gap: var(--step); grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); }
.foot-brand { font-weight: 700; margin-block-end: 0.35rem; }
.foot-title { font-weight: 700; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
.foot-col ul { list-style: none; padding-inline-start: 0; margin: 0; }
.foot-col li { margin-block-end: 0.4rem; }
.foot-legal { padding-block-start: 1.5rem; margin-block-start: 1.5rem; border-block-start: 1px solid var(--line); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}