/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg: #f7f8fb;
  --surface: #ffffff;
  --surface-2: #eef1f7;
  --text: #1b2130;
  --text-muted: #5b6478;
  --border: #dde1ea;
  --accent: #2f5ce0;
  --accent-dark: #1f3fb0;
  --accent-contrast: #ffffff;
  --ok: #1a8a4a;
  --ok-bg: #e7f7ee;
  --warn: #a86a00;
  --warn-bg: #fff4e0;
  --info: #3454b4;
  --info-bg: #e9eefb;
  --neutral-bg: #f1f2f5;
  --danger: #c0362c;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(20, 24, 38, .04), 0 8px 24px rgba(20, 24, 38, .06);
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10131c;
    --surface: #171b28;
    --surface-2: #1e2333;
    --text: #eef0f6;
    --text-muted: #9aa2b8;
    --border: #2a2f42;
    --accent: #6c8cf5;
    --accent-dark: #8fa6f7;
    --accent-contrast: #0c1020;
    --ok: #4fd08a;
    --ok-bg: #103622;
    --warn: #f0b74a;
    --warn-bg: #3a2b0c;
    --info: #8caaf5;
    --info-bg: #1c2740;
    --neutral-bg: #1c2130;
  }
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; tab-size: 2; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.15; letter-spacing: -0.01em; }
ul, ol { padding-left: 1.25em; }
::selection { background: var(--accent); color: var(--accent-contrast); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* =============================================================
   3. Utilidades
   ============================================================= */
.container { max-width: 780px; margin-inline: auto; padding-inline: 1.25rem; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem; background: var(--text); color: var(--bg);
  z-index: 9999; border-radius: 8px; font-weight: 600;
  transition: top .2s var(--ease-out);
}
.skip-link:focus { top: 1rem; }

/* =============================================================
   4. Header / footer
   ============================================================= */
.site-header {
  display: flex; align-items: center; justify-content: center;
  gap: 1.5rem; flex-wrap: wrap;
  padding: 1rem 1.25rem; max-width: 780px; margin-inline: auto;
  text-align: center;
}
.brand { display: flex; align-items: center; gap: .5rem; font-weight: 700; font-size: 1.05rem; }
.brand-mark {
  width: 30px; height: 30px; border-radius: 9px; background: var(--accent);
  color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: .95rem;
  flex: none;
}
.header-links { display: flex; gap: 1rem; font-size: .9rem; color: var(--text-muted); }
.header-links a { color: var(--text-muted); }

.lang-switch { display: flex; gap: .25rem; background: var(--surface-2); border-radius: 999px; padding: .2rem; }
.lang-switch button {
  padding: .3rem .7rem; border-radius: 999px; font-size: .8rem; font-weight: 700;
  color: var(--text-muted);
}
.lang-switch button[aria-pressed="true"] { background: var(--accent); color: var(--accent-contrast); }

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding: 2rem 1.25rem 3rem;
  color: var(--text-muted);
  font-size: .875rem;
}
.footer-inner { max-width: 780px; margin-inline: auto; display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; align-items: center; justify-content: space-between; }
.footer-links { display: flex; gap: 1rem; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); }
.footer-credits { width: 100%; font-size: .78rem; opacity: .75; margin-top: .5rem; }

/* =============================================================
   5. Hero
   ============================================================= */
.hero { padding: 1.5rem 0 .75rem; text-align: center; }
.hero h1 {
  font-size: clamp(1.7rem, 4.5vw, 2.5rem);
  max-width: 20ch;
  margin-inline: auto .5rem;
}
.hero-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 46ch;
  margin: .5rem auto 0;
}

/* =============================================================
   6. Tool card
   ============================================================= */
.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  margin-top: 1.5rem;
}
.tool-tabs-hint {
  display: flex; gap: .5rem; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: .85rem; margin-bottom: .75rem;
}

.input-text {
  width: 100%;
  min-height: 96px;
  resize: vertical;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .85rem 1rem;
  font: inherit;
  font-size: 1rem;
  background: var(--surface);
  color: var(--text);
}
.input-text:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.dropzone {
  margin-top: .75rem;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: .9rem 1rem;
  display: flex; align-items: center; gap: .65rem;
  color: var(--text-muted);
  font-size: .9rem;
  cursor: pointer;
  transition: border-color .18s var(--ease-out), background .18s var(--ease-out);
}
.dropzone:hover, .dropzone:focus-visible { border-color: var(--accent); background: var(--info-bg); }
.dropzone.is-dragover { border-color: var(--accent); background: var(--info-bg); }
.dropzone svg { flex: none; width: 22px; height: 22px; color: var(--accent); }
.dropzone strong { color: var(--text); }

.tool-actions { display: flex; gap: .6rem; margin-top: 1rem; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  padding: .8rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  background: var(--accent);
  color: var(--accent-contrast);
  transition: transform .12s var(--ease-out), background .18s var(--ease-out), box-shadow .18s var(--ease-out);
}
.btn:hover { background: var(--accent-dark); }
.btn:active { transform: scale(.98); }
.btn-secondary { background: var(--surface-2); color: var(--text); }
.btn-secondary:hover { background: var(--border); }
.btn-ghost { background: transparent; color: var(--text-muted); padding: .8rem 1rem; }
.btn-ghost:hover { color: var(--text); background: var(--surface-2); }
.btn-small { padding: .5rem .9rem; font-size: .85rem; border-radius: var(--radius-sm); background: var(--surface-2); color: var(--text); }
.btn-small:hover { background: var(--border); }

.tool-status {
  margin-top: .75rem;
  font-size: .9rem;
  color: var(--text-muted);
  min-height: 1.2em;
}

.privacy-badge {
  margin-top: 1rem;
  display: flex; gap: .5rem; align-items: flex-start;
  font-size: .82rem;
  color: var(--text-muted);
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  padding: .65rem .85rem;
}
.privacy-badge svg { flex: none; width: 16px; height: 16px; margin-top: .1em; color: var(--ok); }

/* States driven by data-state on .tool-card */
.tool-card[data-state="idle"] .tool-status,
.tool-card[data-state="idle"] [data-result-zone] { display: none; }
.tool-card[data-state="loading-engine"] .tool-status,
.tool-card[data-state="working"] .tool-status { display: block; color: var(--accent); }
.tool-card[data-state="error"] .tool-status { display: block; color: var(--danger); font-weight: 600; }
.tool-card[data-state="done"] .tool-status { display: none; }

[data-result-zone]:empty { display: none; }

/* =============================================================
   7. Resultado
   ============================================================= */
.result-card {
  margin-top: 1.25rem;
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem 1.3rem;
  border: 1px solid var(--border);
  animation: resultIn .35s var(--ease-out);
}
@keyframes resultIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.result-badge {
  display: inline-flex; align-items: center; gap: .4rem;
  font-weight: 700; font-size: .95rem;
  padding: .35rem .75rem;
  border-radius: 999px;
  margin-bottom: .6rem;
}
.result-card h2 { font-size: 1.25rem; margin-bottom: .4rem; }
.result-card h3 { font-size: 1rem; margin-top: 1rem; margin-bottom: .4rem; }
.result-summary { font-weight: 600; margin-bottom: .35rem; }
.result-motivo { color: var(--text-muted); }
.steps li, .entidades li { margin-bottom: .35rem; }
.disclaimer { margin-top: 1rem; font-size: .78rem; color: var(--text-muted); font-style: italic; }

.result-card.v-si { background: var(--ok-bg); border-color: color-mix(in srgb, var(--ok) 30%, var(--border)); }
.result-card.v-si .result-badge { background: var(--ok); color: #fff; }
.result-card.v-depende { background: var(--warn-bg); border-color: color-mix(in srgb, var(--warn) 30%, var(--border)); }
.result-card.v-depende .result-badge { background: var(--warn); color: #241a00; }
.result-card.v-no { background: var(--info-bg); border-color: color-mix(in srgb, var(--info) 30%, var(--border)); }
.result-card.v-no .result-badge { background: var(--info); color: #fff; }
.result-card.v-generico { background: var(--neutral-bg); }
.result-card.v-generico .result-badge { background: var(--surface); border: 1px solid var(--border); }

/* =============================================================
   8. Carta de reclamación
   ============================================================= */
.letter-card {
  margin-top: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  background: var(--surface);
}
.letter-hint { color: var(--text-muted); font-size: .9rem; margin-bottom: .85rem; }
.letter-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .75rem .9rem;
  margin-bottom: 1rem;
}
.letter-form label { display: flex; flex-direction: column; gap: .3rem; font-size: .85rem; color: var(--text-muted); }
.letter-form label.full { grid-column: 1 / -1; }
.letter-form input, .letter-form textarea {
  font: inherit; font-size: .95rem; color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: .6rem .7rem; background: var(--bg);
}
.letter-output { margin-top: 1rem; }
.letter-output textarea {
  width: 100%; font: inherit; font-size: .9rem; line-height: 1.5;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: .8rem; background: var(--bg); color: var(--text);
}
.letter-actions { display: flex; gap: .5rem; margin-top: .6rem; flex-wrap: wrap; }

/* =============================================================
   9. Anuncios (placeholders)
   ============================================================= */
.ad-slot {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  font-size: .8rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  background: var(--surface-2);
  margin: 1.5rem auto;
}
.ad-slot--banner { max-width: 780px; min-height: 90px; margin-inline: auto; }
.ad-slot--incontent { max-width: 728px; min-height: 250px; }
/* PEGA AQUÍ TU CÓDIGO DE ADSENSE dentro de cada .ad-slot cuando actives publicidad */

dialog[data-ad-popup] {
  border: none; border-radius: var(--radius);
  padding: 0; max-width: 320px; width: calc(100% - 2rem);
  box-shadow: var(--shadow);
  background: var(--surface);
  color: var(--text);
}
dialog[data-ad-popup]::backdrop { background: rgba(10, 12, 20, .45); }
.ad-popup-inner { padding: 1rem; position: relative; }
.ad-popup-close {
  position: absolute; top: .5rem; right: .5rem;
  width: 28px; height: 28px; border-radius: 999px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 1.1rem;
}
.ad-popup-close:hover { background: var(--surface-2); color: var(--text); }
.ad-popup-slot {
  min-height: 200px; margin-top: .5rem;
  border: 1.5px dashed var(--border); border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: .8rem; letter-spacing: .06em; text-transform: uppercase;
  background: var(--surface-2);
}

/* =============================================================
   10. Contenido SEO / cómo funciona / FAQ / más info
   ============================================================= */
.section { padding: 2.25rem 0; }
.section h2 { font-size: 1.4rem; margin-bottom: .75rem; }
.section-lead { color: var(--text-muted); margin-bottom: 1rem; }

.steps-3 {
  display: grid; gap: 1rem;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 1rem;
}
.step-item {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1rem;
}
.step-item .step-num {
  width: 26px; height: 26px; border-radius: 999px; background: var(--accent); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: .85rem;
  margin-bottom: .5rem;
}
.step-item h3 { font-size: .95rem; margin-bottom: .3rem; }
.step-item p { font-size: .87rem; color: var(--text-muted); }

.categorias-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: .5rem;
  margin-top: 1rem;
}
.categorias-grid button {
  text-align: left; font-size: .85rem;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: .6rem .75rem; background: var(--surface); color: var(--text);
  transition: border-color .15s var(--ease-out), background .15s var(--ease-out);
}
.categorias-grid button:hover { border-color: var(--accent); background: var(--info-bg); }

[data-faqs] details {
  border-bottom: 1px solid var(--border);
  padding: .9rem 0;
}
[data-faqs] summary {
  cursor: pointer; font-weight: 600; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
[data-faqs] summary::-webkit-details-marker { display: none; }
[data-faqs] summary::after { content: "+"; font-size: 1.2rem; color: var(--text-muted); }
[data-faqs] details[open] summary::after { content: "\2212"; }
[data-faqs] p { margin-top: .5rem; color: var(--text-muted); font-size: .92rem; }

/* =============================================================
   11. Responsive (mobile-first, breakpoints fijos)
   ============================================================= */
@media (max-width: 539px) {
  .letter-form { grid-template-columns: 1fr; }
  .steps-3 { grid-template-columns: 1fr; }
  .categorias-grid { grid-template-columns: 1fr; }
  .site-header { flex-wrap: wrap; gap: .5rem; }
}
@media (min-width: 540px) {
  .tool-card { padding: 1.75rem; }
}
@media (min-width: 720px) {
  .hero { padding-top: 2.5rem; }
}

/* =============================================================
   12. Reduced motion — solo lo intrusivo
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  .result-card { animation: none; }
}