/* ==========================================================================
   Aval Técnico — Carlos Jiménez
   Sistema de diseño (solo modo oscuro): grafito frío, violeta eléctrico
   y verde de validación.
   ========================================================================== */

:root {
  /* Grafito frío + violeta eléctrico + verde de validación */
  color-scheme: dark;

  --ink:        #e6edf3;
  --ink-soft:   #c2ccd6;
  --muted:      #8b98a5;
  --paper:      #0b0f14;
  --paper-2:    #11161d;
  --paper-3:    #1a212a;
  --line:       rgba(230, 237, 243, .13);
  --line-soft:  rgba(230, 237, 243, .07);
  --accent:     #8b7dff;
  --accent-2:   #a99cff;
  --accent-ink: #b3a8ff;
  --accent-bg:  rgba(139, 125, 255, .14);
  --ok:         #3fd39b;

  --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
  --shadow-md: 0 20px 45px -20px rgba(0,0,0,.75);

  --radius:    12px;
  --radius-sm: 8px;
  --container: 1120px;

  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --display: "Space Grotesk", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --step-hero: clamp(2.05rem, 1.2rem + 3.4vw, 3.35rem);
  --step-h2:   clamp(1.75rem, 1.15rem + 2vw, 2.5rem);
  --step-h3:   clamp(1.1rem, 1rem + .5vw, 1.32rem);
  --sp-section: clamp(4rem, 3rem + 5vw, 7.5rem);
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "kern", "liga", "calt";
}

img, svg, video { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: -0.022em;
  margin: 0 0 .6em;
  text-wrap: balance;
}
h1 { font-size: var(--step-hero); }
h2 { font-size: var(--step-h2); }
h3 { font-size: var(--step-h3); line-height: 1.25; }
p  { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

a { color: inherit; text-underline-offset: .18em; text-decoration-thickness: .06em; }
a:hover { color: var(--accent); }

strong { font-weight: 650; }

::selection { background: var(--accent-bg); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

hr { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }

/* ---------- Layout ------------------------------------------------------ */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.15rem, .6rem + 2vw, 2.5rem);
}
.narrow { max-width: 46rem; margin-inline: auto; }
.section { padding-block: var(--sp-section); }
.section--tight { padding-block: clamp(2.5rem, 2rem + 3vw, 4.5rem); }
.section--alt { background: var(--paper-2); }
.section--ink { background: var(--paper-2); color: var(--ink); }
.section--ink .lede, .section--ink .muted { color: var(--muted); }
.section + .section--alt, .section--alt + .section { border-top: 1px solid var(--line-soft); }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--ink); color: var(--paper);
  padding: .7rem 1rem; border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

/* ---------- Tipografía de apoyo ---------------------------------------- */

.eyebrow {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--mono);
  font-size: .74rem; font-weight: 500; letter-spacing: .06em;
  text-transform: uppercase; color: var(--accent-ink);
  margin: 0 0 1.1rem;
}
.eyebrow::before {
  content: ""; width: 1.6rem; height: 1px; background: currentColor; opacity: .55;
}

.lede {
  font-size: clamp(1.08rem, 1rem + .5vw, 1.3rem);
  line-height: 1.6;
  color: var(--muted);
  max-width: 40rem;
}
.muted { color: var(--muted); }
.small { font-size: .9rem; }
.center { text-align: center; }
.center .lede, .center .eyebrow { margin-inline: auto; }

.section-head { max-width: 44rem; margin-bottom: clamp(2.2rem, 1.5rem + 2vw, 3.5rem); }
.section-head.center { margin-inline: auto; }

/* ---------- Botones ----------------------------------------------------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  font: inherit; font-weight: 560; font-size: .98rem;
  padding: .85rem 1.5rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none; cursor: pointer;
  transition: transform .15s ease, background-color .15s ease, border-color .15s ease, box-shadow .15s ease, color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--accent); color: #0b0f14;
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover { background: var(--accent-2); color: #0b0f14; box-shadow: var(--shadow-md); }

.btn--ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.btn--ghost:hover { border-color: var(--ink); color: var(--ink); background: var(--paper-2); }

.btn--light { background: var(--accent); color: #0b0f14; }
.btn--light:hover { background: var(--accent-2); color: #0b0f14; }
.btn--outline-light { border-color: var(--line); color: var(--ink); }
.btn--outline-light:hover { border-color: var(--ink); color: var(--ink); background: var(--paper-3); }

.btn-row { display: flex; flex-wrap: wrap; gap: .8rem; align-items: center; }
.center .btn-row { justify-content: center; }

.link-arrow {
  display: inline-flex; align-items: center; gap: .4rem;
  font-weight: 560; text-decoration: none; color: var(--accent-ink);
}
.link-arrow::after { content: "→"; transition: transform .15s ease; }
.link-arrow:hover::after { transform: translateX(3px); }

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

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.site-header.is-stuck { border-bottom-color: var(--line-soft); box-shadow: var(--shadow-sm); }
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  min-height: 4.5rem;
}

.brand { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; color: var(--ink); }
.brand__mark { width: 2.3rem; height: 2.3rem; flex: none; display: block; }
.brand__mark svg { width: 100%; height: 100%; display: block; }
.logo-box { stroke: var(--accent); }
.logo-check { stroke: var(--ok); }
.site-footer .logo-box { stroke: var(--accent-2); }
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name { font-family: var(--display); font-weight: 600; font-size: 1.1rem; letter-spacing: -.015em; }
.brand__sub { font-family: var(--mono); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }

.nav { display: flex; align-items: center; gap: 1.6rem; }
.nav a { font-size: .95rem; text-decoration: none; color: var(--ink-soft); }
.nav a:hover, .nav a[aria-current="page"] { color: var(--accent-ink); }
.nav .btn { margin-left: .4rem; padding: .6rem 1.15rem; font-size: .92rem; }
/* el color de .nav a ganaría por especificidad al del botón */
.nav a.btn--primary, .nav a.btn--primary:hover { color: #0b0f14; }

.nav-toggle {
  display: none; background: none; border: 1px solid var(--line);
  border-radius: 999px; padding: .5rem .9rem; font: inherit; font-size: .9rem;
  color: var(--ink); cursor: pointer;
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; align-items: center; gap: .45rem; }
  .nav {
    position: absolute; inset: 100% 0 auto; display: none;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line);
    padding: .5rem clamp(1.15rem, .6rem + 2vw, 2.5rem) 1.4rem;
    box-shadow: var(--shadow-md);
  }
  .site-header.is-open .nav { display: flex; }
  .nav a { padding: .8rem 0; border-bottom: 1px solid var(--line-soft); }
  .nav .btn { margin: .9rem 0 0; justify-content: center; }
}

/* ---------- Hero -------------------------------------------------------- */

.hero { padding-block: clamp(3rem, 2rem + 6vw, 6.5rem) clamp(3rem, 2rem + 4vw, 5rem); position: relative; overflow: hidden; }
.hero::after {
  content: ""; position: absolute; inset: auto -20% -60% 55%;
  height: 60vh; background: radial-gradient(closest-side, var(--accent-bg), transparent 70%);
  pointer-events: none;
}
.hero__grid {
  display: grid; gap: clamp(2.5rem, 2rem + 4vw, 4.5rem);
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  align-items: center;
}
@media (max-width: 900px) { .hero__grid { grid-template-columns: 1fr; } }
.hero h1 { margin-bottom: .5em; }
.hero__claim { color: var(--accent); }
.hero .lede { max-width: 34rem; }
.hero__actions { margin-top: 2rem; }
.hero__note { margin-top: 1.2rem; font-size: .9rem; color: var(--muted); display: flex; align-items: center; gap: .5rem; }
.hero__note::before { content: "✓"; color: var(--ok); font-weight: 700; }

.portrait { position: relative; }
.portrait img, .portrait svg {
  width: 100%; border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  background: var(--paper-3);
  aspect-ratio: 3 / 4; object-fit: cover;
}
.portrait--square img, .portrait--square svg { aspect-ratio: 1 / 1; }
.portrait__seal {
  position: absolute; right: -1rem; bottom: -1rem;
  max-width: 12rem; border-radius: var(--radius-sm);
  background: var(--paper-2); border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  text-align: left;
  font-family: var(--mono); line-height: 1.45; font-size: .76rem;
  color: var(--ink-soft); box-shadow: var(--shadow-md);
  padding: .7rem .85rem;
}
@media (max-width: 900px) { .portrait { max-width: 26rem; } .portrait__seal { right: -.5rem; bottom: -.5rem; max-width: 11rem; font-size: .72rem; } }

/* ---------- Barra de credenciales -------------------------------------- */

.credentials { border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); background: var(--paper-2); }
.credentials__inner { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 2.2rem; padding-block: 1.5rem; }
.credentials__label { font-family: var(--mono); font-size: .74rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.credentials__list { display: flex; flex-wrap: wrap; gap: .6rem 1.6rem; list-style: none; margin: 0; padding: 0; }
.credentials__list li { font-family: var(--display); font-weight: 500; font-size: 1.02rem; color: var(--ink-soft); }

/* ---------- Rejillas y tarjetas ---------------------------------------- */

.grid { display: grid; gap: 1.4rem; }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 21rem), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 13.5rem), 1fr)); }

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.4rem, 1.1rem + 1vw, 2rem);
  box-shadow: var(--shadow-sm);
}
.section--alt .card { background: var(--paper); }
.card h3 { margin-bottom: .5rem; }
.card p:last-child { margin-bottom: 0; }
.card__num {
  font-family: var(--mono); font-size: .85rem; color: var(--accent-ink);
  border: 1px solid var(--accent); border-radius: var(--radius-sm);
  width: 2.1rem; height: 2.1rem; display: grid; place-items: center; margin-bottom: 1rem;
}

.pain-card { border-left: 3px solid var(--accent); }
.pain-card h3 { font-family: var(--sans); font-size: 1.02rem; font-weight: 620; letter-spacing: 0; }

/* ---------- Cita ------------------------------------------------------- */

.quote {
  font-family: var(--display); font-weight: 500; font-size: clamp(1.3rem, 1.05rem + 1.2vw, 1.85rem);
  line-height: 1.32; letter-spacing: -.02em; margin: 0;
  border-left: 2px solid var(--accent); padding-left: clamp(1rem, .8rem + 1vw, 1.8rem);
}
.quote cite { display: block; font: 400 .88rem/1.5 var(--mono); font-style: normal; color: var(--muted); margin-top: 1rem; }

/* ---------- Servicios --------------------------------------------------- */

.service {
  display: flex; flex-direction: column;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--paper); padding: clamp(1.6rem, 1.2rem + 1.4vw, 2.4rem);
  box-shadow: var(--shadow-sm);
}
.service--highlight { border-color: var(--accent); box-shadow: var(--shadow-md); }
.service__tag {
  align-self: flex-start; font-family: var(--mono); font-size: .7rem; font-weight: 500; letter-spacing: .06em; text-transform: uppercase;
  background: var(--accent-bg); color: var(--accent-ink); border-radius: 999px; padding: .35rem .8rem; margin-bottom: 1.1rem;
}
.service__meta { font-family: var(--mono); font-size: .82rem; color: var(--muted); margin: -.2rem 0 1rem; }
.service__list { list-style: none; margin: 1.3rem 0; padding: 0; display: grid; gap: .7rem; }
.service__list li { position: relative; padding-left: 1.7rem; }
.service__list li::before {
  content: ""; position: absolute; left: 0; top: .55em;
  width: .75rem; height: .42rem; border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent);
  transform: rotate(-45deg);
}
.service__footer { margin-top: auto; padding-top: 1.4rem; border-top: 1px solid var(--line-soft); }
.service__price {
  font-family: var(--mono); font-weight: 500;
  font-size: clamp(1.15rem, 1rem + .5vw, 1.45rem);
  line-height: 1.3; letter-spacing: -.01em;
  color: var(--ink); margin-bottom: 1.1rem;
}
.service__price strong { color: var(--accent); font-weight: 500; }

.guarantee {
  display: flex; gap: 1rem; align-items: flex-start;
  background: var(--accent-bg); border-radius: var(--radius-sm);
  padding: 1.1rem 1.2rem; margin-top: 1.4rem; font-size: .96rem;
}
.guarantee strong { display: block; }
.guarantee__icon { flex: none; font-size: 1.2rem; line-height: 1.3; }

/* ---------- Independencia ---------------------------------------------- */

.split {
  display: grid; gap: clamp(2rem, 1.5rem + 3vw, 4rem);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
  align-items: center;
}
.checklist { list-style: none; margin: 1.6rem 0 0; padding: 0; display: grid; gap: .9rem; }
.checklist li { position: relative; padding-left: 2rem; }
.checklist li::before {
  content: "✓"; position: absolute; left: 0; top: -.05em;
  color: var(--accent); font-weight: 700;
}
.section--ink .checklist li::before { color: var(--accent-2); }

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

.faq { display: grid; gap: 0; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; padding: 1.35rem 2.5rem 1.35rem 0;
  font-family: var(--display); font-weight: 500; font-size: 1.08rem; letter-spacing: -.01em; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: .3rem; top: 1.15rem;
  font-family: var(--sans); font-size: 1.4rem; color: var(--accent); transition: transform .2s ease;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details > div { padding: 0 2.5rem 1.5rem 0; color: var(--muted); max-width: 44rem; }

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

.cta-band { text-align: center; }
.cta-band .lede { margin-inline: auto; }
.cta-band__note { margin-top: 1.4rem; font-size: .9rem; }

/* ---------- Contacto ---------------------------------------------------- */

.contact-grid { display: grid; gap: clamp(2rem, 1.5rem + 3vw, 3.5rem); grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr)); align-items: start; }
.field { display: grid; gap: .4rem; margin-bottom: 1.1rem; }
.field label { font-size: .9rem; font-weight: 560; }
.field input, .field textarea, .field select {
  font: inherit; font-size: 1rem; color: var(--ink);
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: .8rem .95rem; width: 100%;
}
.field textarea { min-height: 9rem; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--accent-bg); }

.contact-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.2rem; }
.contact-list dt { font-family: var(--mono); font-size: .74rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.contact-list dd { margin: .2rem 0 0; font-family: var(--display); font-weight: 500; font-size: 1.08rem; }

/* ---------- Contenido de páginas / blog -------------------------------- */

.page-header { padding-block: clamp(3rem, 2.4rem + 3vw, 5rem) clamp(1.5rem, 1rem + 2vw, 2.5rem); }
.page-header h1 { font-size: clamp(2.1rem, 1.5rem + 2.4vw, 3.25rem); }
.prose { max-width: 46rem; }
.prose h2 { margin-top: 2.4em; }
.prose h3 { margin-top: 2em; }
.prose > :first-child { margin-top: 0; }
.prose ul, .prose ol { padding-left: 1.3rem; margin: 0 0 1.3em; display: grid; gap: .5rem; }
.prose blockquote {
  margin: 2rem 0; padding-left: 1.3rem; border-left: 2px solid var(--accent);
  font-family: var(--display); font-weight: 500; font-size: 1.12rem;
}
.prose code { font-family: var(--mono); font-size: .88em; background: var(--paper-2); color: var(--accent-ink); padding: .15em .4em; border-radius: 5px; }
.prose img { border-radius: var(--radius); margin: 2rem 0; }
.prose table { width: 100%; border-collapse: collapse; margin: 2rem 0; font-size: .96rem; }
.prose th, .prose td { text-align: left; padding: .7rem .8rem; border-bottom: 1px solid var(--line); }
.prose th { font-weight: 620; }

.post-list { display: grid; gap: 1.2rem; list-style: none; padding: 0; margin: 0; }
.post-item { border-bottom: 1px solid var(--line); padding-bottom: 1.4rem; }
.post-item:last-child { border-bottom: 0; }
.post-item h3 { margin-bottom: .35rem; }
.post-item a { text-decoration: none; }
.post-meta { font-family: var(--mono); font-size: .8rem; color: var(--muted); }

.pagination { display: flex; gap: 1rem; justify-content: space-between; margin-top: 3rem; font-size: .95rem; }

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

.site-footer {
  background: var(--paper-2); color: var(--muted);
  padding-block: clamp(3rem, 2.4rem + 3vw, 4.5rem) 2rem;
  margin-top: auto;
}
.site-footer a { color: inherit; text-decoration: none; }
.site-footer a:hover { color: var(--accent-2); }
.site-footer .brand { color: var(--ink); }
.footer__grid { display: grid; gap: 2.5rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr)); }
.footer__title { font-family: var(--mono); font-size: .74rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin-bottom: 1rem; }
.footer__list { list-style: none; margin: 0; padding: 0; display: grid; gap: .6rem; font-size: .95rem; }
.footer__bottom {
  margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: .8rem 1.5rem; justify-content: space-between; font-size: .85rem;
}

/* ---------- Utilidades -------------------------------------------------- */

.stack > * + * { margin-top: 1.1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}
.placeholder-note {
  font-size: .78rem; color: var(--muted); margin-top: .7rem; text-align: center;
}