/* =========================================================
   WLAN-PRO — landing page
   Hoja de estilos única, sin dependencias externas.
   ========================================================= */

:root {
  --ink:        #0b1220;
  --ink-soft:   #1b2436;
  --body:       #465065;
  --muted:      #6b7488;
  --line:       #e3e7ef;
  --bg:         #ffffff;
  --bg-alt:     #f5f7fb;
  --accent:     #0e7ec4;
  --accent-700: #0a5f95;
  --accent-soft:#e6f2fa;
  --sky:        #38bdf8;

  --radius:     14px;
  --radius-sm:  10px;
  --shadow:     0 1px 2px rgba(11, 18, 32, .05), 0 12px 28px -18px rgba(11, 18, 32, .35);
  --maxw:       1120px;

  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  color: var(--body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { color: var(--ink); line-height: 1.18; margin: 0 0 .5em; letter-spacing: -.02em; }
h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.3rem); font-weight: 750; }
h3 { font-size: 1.12rem; font-weight: 700; }
p  { margin: 0 0 1rem; }
img, svg { max-width: 100%; }

a { color: var(--accent-700); text-decoration-thickness: 1px; text-underline-offset: 2px; }

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

.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: absolute; left: 50%; top: -60px; transform: translateX(-50%);
  z-index: 100; background: var(--ink); color: #fff; padding: .6rem 1rem;
  border-radius: 0 0 8px 8px; text-decoration: none; transition: top .15s;
}
.skip-link:focus { top: 0; }

.container { width: min(100% - 2.5rem, var(--maxw)); margin-inline: auto; }
.container.narrow { max-width: 780px; }

/* ---------- Botones ---------- */
.btn {
  --btn-bg: transparent;
  display: inline-flex; align-items: center; justify-content: center;
  gap: .5rem; padding: .82rem 1.4rem;
  border: 1px solid transparent; border-radius: 999px;
  font: inherit; font-weight: 650; font-size: .97rem;
  text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: background-color .18s, border-color .18s, transform .18s, color .18s;
}
.btn:active { transform: translateY(1px); }
.btn-sm { padding: .55rem 1.05rem; font-size: .9rem; }
.btn-block { width: 100%; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-700); }

.btn-ghost { border-color: rgba(255, 255, 255, .28); color: #eef4fb; }
.btn-ghost:hover { border-color: rgba(255, 255, 255, .6); background: rgba(255, 255, 255, .07); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; min-height: 68px;
}

.brand {
  display: inline-flex; align-items: center; gap: .6rem;
  text-decoration: none; color: var(--ink);
}
.brand-mark { display: inline-flex; color: var(--accent); }
.brand-text { font-weight: 800; letter-spacing: -.03em; font-size: 1.12rem; }
/* Segunda mitad del logotipo ("-PRO"): mismo peso, color de acento y sin
   separación, para que se lea como una sola palabra. */
.brand-text span { color: var(--accent); }

.site-nav { display: flex; align-items: center; gap: 1.6rem; }
.site-nav a {
  color: var(--ink-soft); text-decoration: none; font-size: .96rem; font-weight: 550;
}
.site-nav a:not(.btn):hover { color: var(--accent-700); }
.site-nav .btn { color: #fff; }

.nav-toggle {
  display: none; width: 44px; height: 40px; padding: 0;
  background: none; border: 1px solid var(--line); border-radius: 10px; cursor: pointer;
}
.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  display: block; width: 18px; height: 2px; margin-inline: auto;
  background: var(--ink); border-radius: 2px; transition: transform .2s, opacity .2s;
}
.nav-toggle-bars { position: relative; }
.nav-toggle-bars::before,
.nav-toggle-bars::after { content: ""; position: absolute; left: 0; }
.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after  { top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after  { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Hero ---------- */
/* El velo es un degradado horizontal: casi opaco sobre la columna de texto
   (izquierda) y más liviano a la derecha, donde la foto sí se ve. El texto
   nunca llega hasta ahí porque .hero-inner tope en 800px. */
.hero {
  position: relative; overflow: hidden;
  background:
    linear-gradient(100deg,
      rgba(11, 18, 32, .97) 0%,
      rgba(12, 24, 40, .94) 40%,
      rgba(16, 40, 66, .62) 100%),
    url("img/hero.webp") center right / cover no-repeat,
    var(--ink);
  color: #cfd8e6;
  padding: clamp(3.5rem, 9vw, 6.5rem) 0 clamp(3rem, 7vw, 5rem);
}
.hero-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(56, 189, 248, .10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, .10) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(85% 75% at 70% 15%, #000 10%, transparent 75%);
  -webkit-mask-image: radial-gradient(85% 75% at 70% 15%, #000 10%, transparent 75%);
}
.hero-inner { position: relative; max-width: 800px; }
.hero h1 { color: #fff; }
.hero .lead { font-size: clamp(1.02rem, 1.8vw, 1.22rem); max-width: 60ch; color: #b9c5d6; }

.eyebrow {
  text-transform: uppercase; letter-spacing: .14em; font-size: .76rem;
  font-weight: 700; color: var(--accent); margin: 0 0 .9rem;
}
.hero .eyebrow { color: var(--sky); }

.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.8rem; }

/* Cuatro datos: el mínimo de 150px hace que entren las cuatro columnas dentro
   de los 800px de .hero-inner, y caigan a 2x2 en móvil. */
.hero-stats {
  display: grid; gap: 1.1rem 1.6rem; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  list-style: none; margin: 3rem 0 0; padding: 1.6rem 0 0;
  border-top: 1px solid rgba(255, 255, 255, .14);
}
.hero-stats strong { display: block; color: #fff; font-size: 1.05rem; letter-spacing: -.01em; }
/* #93a3b8 daba 3.71:1 sobre la zona más clara de la foto del hero; este tono
   deja la bajada de cada dato en 5.0:1, sobre el mínimo AA de 4.5:1. */
.hero-stats span { font-size: .92rem; color: #b0bdcd; }

/* ---------- Secciones ---------- */
.section { padding: clamp(3.4rem, 7vw, 5.6rem) 0; }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--line); }
.section-dark { background: var(--ink); color: #b9c5d6; }
.section-dark h2 { color: #fff; }
.section-dark .eyebrow { color: var(--sky); }
.section-dark .section-sub { color: #97a5b8; }

.section-head { max-width: 640px; margin-bottom: 2.6rem; }
.section-sub { color: var(--muted); font-size: 1.03rem; margin-bottom: 0; }

.split {
  display: grid; gap: clamp(2rem, 5vw, 4rem);
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  align-items: start;
}

/* Subtítulo que agrupa las dos familias de servicios dentro de #servicios. */
.group-title {
  display: flex; align-items: center; gap: 1rem;
  font-size: .82rem; font-weight: 700; text-transform: uppercase; letter-spacing: .12em;
  color: var(--muted); margin: 0 0 1.3rem;
}
.group-title::after {
  content: ""; flex: 1; height: 1px; background: var(--line);
}
.cards + .group-title { margin-top: 2.8rem; }

/* ---------- Tarjetas de servicio ---------- */
/* Son cuatro servicios: 2x2 en pantallas anchas evita la tarjeta huérfana
   que deja un auto-fit de tres columnas. */
.cards { display: grid; gap: 1.3rem; grid-template-columns: 1fr; }
@media (min-width: 760px) {
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.card {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.7rem 1.6rem; box-shadow: var(--shadow);
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.card:hover {
  transform: translateY(-3px);
  border-color: #c9d6e6;
  box-shadow: 0 1px 2px rgba(11, 18, 32, .05), 0 22px 40px -22px rgba(11, 18, 32, .45);
}
.card-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; margin-bottom: 1rem;
  border-radius: 12px; background: var(--accent-soft); color: var(--accent-700);
}
.card-icon svg { width: 24px; height: 24px; }
.card p { font-size: .98rem; }

.ticks { list-style: none; margin: 1.1rem 0 0; padding: 0; font-size: .94rem; }
.ticks li { position: relative; padding-left: 1.55rem; margin-bottom: .5rem; }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: .5em;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent); opacity: .85;
}

/* ---------- Marcas ---------- */
/* Solo texto, sin logotipos: los logos de terceros sugieren una relación de
   partner oficial que la página no puede afirmar. */
.brands {
  margin-top: 2.8rem; padding: 1.6rem 1.7rem;
  background: var(--accent-soft); border-radius: var(--radius);
}
.brands-label {
  margin: 0 0 .9rem; font-size: .78rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .12em; color: var(--accent-700);
}
.brands-list {
  display: flex; flex-wrap: wrap; gap: .5rem .6rem;
  list-style: none; margin: 0; padding: 0;
}
.brands-list li {
  background: var(--bg); border: 1px solid #cfe3f1; border-radius: 8px;
  padding: .4rem .85rem; font-size: .92rem; font-weight: 650; color: var(--ink);
}
.brands-note { margin: 1rem 0 0; font-size: .89rem; color: var(--body); max-width: 62ch; }

/* ---------- Metodología ---------- */
/* Cinco etapas: con 230px de mínimo solo entraban cuatro por fila y la quinta
   quedaba suelta; 195px permite la fila completa dentro del contenedor. */
.steps {
  display: grid; gap: 1.3rem; list-style: none; margin: 0; padding: 0;
  grid-template-columns: repeat(auto-fit, minmax(195px, 1fr));
  counter-reset: step;
}
.steps li {
  background: var(--bg); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.5rem;
}
.step-num {
  display: block; font-size: .85rem; font-weight: 800; letter-spacing: .1em;
  color: var(--accent); margin-bottom: .6rem;
}
.steps p { font-size: .95rem; margin: 0; }

/* ---------- Razones ---------- */
.reasons {
  display: grid; gap: 1.2rem; list-style: none; margin: 0; padding: 0;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.reasons li {
  border-left: 3px solid var(--accent-soft); padding-left: 1.1rem;
}
.reasons h3 { margin-bottom: .35rem; }
.reasons p { font-size: .95rem; margin: 0; }

/* ---------- Galería "En terreno" ---------- */
.gallery {
  display: grid; gap: 1.3rem; list-style: none; margin: 0; padding: 0;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.gallery figure {
  margin: 0; height: 100%;
  background: var(--bg); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
  display: flex; flex-direction: column;
}
/* height:auto es obligatorio: los atributos width/height del <img> entran como
   presentation hints y, sin él, la altura fija gana por sobre aspect-ratio. */
.gallery img {
  display: block; width: 100%; height: auto; aspect-ratio: 4 / 3;
  object-fit: cover; background: var(--bg-alt);
}
.gallery figcaption {
  padding: 1rem 1.1rem 1.2rem; font-size: .92rem; color: var(--muted);
}
.gallery figcaption strong {
  display: block; color: var(--ink); font-size: 1rem; margin-bottom: .2rem;
}

/* ---------- Sectores ---------- */
.chips { display: flex; flex-wrap: wrap; gap: .65rem; list-style: none; margin: 0; padding: 0; }
.chips li {
  background: var(--bg); border: 1px solid var(--line); border-radius: 999px;
  padding: .55rem 1.1rem; font-size: .94rem; font-weight: 550; color: var(--ink-soft);
}

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer; padding: 1.15rem 2.2rem 1.15rem 0;
  position: relative; font-weight: 650; color: var(--ink); font-size: 1.02rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: .4rem; top: 1.6rem;
  width: 10px; height: 10px; border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent); transform: rotate(45deg);
  transition: transform .2s;
}
.faq details[open] summary::after { transform: rotate(-135deg); top: 1.85rem; }
.faq summary:hover { color: var(--accent-700); }
.faq details p { margin: -.2rem 0 1.3rem; font-size: .98rem; max-width: 68ch; }

/* ---------- Contacto ---------- */
.contact-list { list-style: none; margin: 2rem 0 0; padding: 0; display: grid; gap: .9rem; }
.contact-list li { display: flex; align-items: center; gap: .8rem; font-size: .98rem; }
.contact-list svg { width: 20px; height: 20px; color: var(--sky); display: block; }
.contact-list a { color: #dbe6f2; text-decoration: none; }
.contact-list a:hover { color: #fff; text-decoration: underline; }

.form {
  background: #101a2c; border: 1px solid rgba(255, 255, 255, .09);
  border-radius: var(--radius); padding: clamp(1.4rem, 3vw, 2rem);
}
.field { margin-bottom: 1.05rem; }
.field-row { display: grid; gap: 0 1rem; grid-template-columns: 1fr 1fr; }
.field label {
  display: block; margin-bottom: .35rem; font-size: .88rem; font-weight: 600; color: #c8d4e3;
}
.field input, .field select, .field textarea {
  width: 100%; padding: .72rem .85rem;
  font: inherit; font-size: .97rem; color: #f1f5fa;
  background: #0b1220; border: 1px solid rgba(255, 255, 255, .14);
  border-radius: var(--radius-sm);
  transition: border-color .18s, box-shadow .18s;
}
.field textarea { resize: vertical; min-height: 120px; }
.field select { appearance: none; background-image: none; cursor: pointer; }
.field select option { color: #0b1220; background: #fff; }
.field input::placeholder, .field textarea::placeholder { color: #64748b; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--sky); box-shadow: 0 0 0 3px rgba(56, 189, 248, .2);
}
.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] { border-color: #f87171; }

.form .btn-primary { margin-top: .4rem; }
.form-note { margin: .9rem 0 0; font-size: .9rem; min-height: 1.3em; color: #94a3b8; }
.form-note.is-error { color: #fca5a5; }
.form-note.is-ok { color: #6ee7b7; }

/* ---------- Footer ---------- */
.site-footer { background: #060b14; color: #7d8ba0; padding: 3rem 0 1.5rem; font-size: .93rem; }
.footer-inner {
  display: flex; flex-wrap: wrap; gap: 2rem; justify-content: space-between; align-items: flex-start;
}
.site-footer .brand { color: #fff; }
.site-footer .brand-text span { color: var(--sky); }
.footer-tag { margin: .7rem 0 0; max-width: 34ch; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 1.2rem; }
.footer-nav a { color: #a9b6c8; text-decoration: none; }
.footer-nav a:hover { color: #fff; }
.footer-legal {
  margin-top: 2.5rem; padding-top: 1.3rem;
  border-top: 1px solid rgba(255, 255, 255, .08); font-size: .86rem;
}
.footer-legal p { margin: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .split { grid-template-columns: 1fr; }

  /* Bajo este ancho el texto ocupa todo el hero, incluida la zona donde el velo
     era liviano: se opaca parejo para no perder contraste sobre la foto. */
  .hero {
    background:
      linear-gradient(150deg,
        rgba(11, 18, 32, .97) 0%,
        rgba(12, 24, 40, .95) 55%,
        rgba(14, 32, 53, .93) 100%),
      url("img/hero.webp") center right / cover no-repeat,
      var(--ink);
  }
}

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .site-nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    padding: .6rem 1.25rem 1.2rem;
    background: #fff; border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 30px -22px rgba(11, 18, 32, .5);
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: .8rem 0; border-bottom: 1px solid var(--line); }
  .site-nav .btn { margin-top: .9rem; border-bottom: none; justify-content: center; }
}

@media (max-width: 480px) {
  body { font-size: 16px; }
  .field-row { grid-template-columns: 1fr; }
  .hero-actions .btn { flex: 1 1 100%; }
}

/* ---------- Landings de servicio ---------- */
/* Variante del hero sin fotografía: las cuatro landings comparten plantilla y
   repetir la misma imagen en todas la volvería decorado. Se mantiene la
   retícula y el fondo oscuro para que la continuidad de marca no se pierda. */
.hero--sub {
  background: radial-gradient(115% 130% at 75% 5%, #17344f 0%, var(--ink) 60%);
  padding: clamp(2.4rem, 6vw, 4rem) 0 clamp(2.4rem, 5vw, 3.4rem);
}
.hero--sub h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); }

.breadcrumb { font-size: .88rem; color: #93a3b8; margin-bottom: 1rem; }
.breadcrumb a { color: var(--sky); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { margin-inline: .35rem; }

/* Texto corrido de la sección técnica: el único bloque de lectura seguida
   de estas páginas, así que se le da medida de línea propia. */
.prose { display: flex; flex-direction: column; gap: 1rem; max-width: 68ch; }
.prose p { margin: 0; font-size: 1.02rem; }
.prose strong { color: var(--ink); font-weight: 650; }

.cta-band { display: flex; flex-direction: column; gap: .2rem; }
.cta-band .contact-list { margin-top: 1.6rem; }

/* Enlace al final de una tarjeta cuyo servicio tiene landing propia. */
.card-link {
  display: inline-flex; align-items: center; gap: .35rem;
  margin-top: 1rem; font-size: .93rem; font-weight: 650;
  color: var(--accent-700); text-decoration: none;
}
.card-link::after { content: "→"; transition: transform .18s; }
.card-link:hover { text-decoration: underline; }
.card-link:hover::after { transform: translateX(3px); }

.sector-note { margin: 1.6rem 0 0; font-size: .97rem; color: var(--muted); }

/* Acceso al portal de clientes: presente pero subordinado. Quien viene a pagar
   necesita encontrarlo; quien viene a cotizar no debe confundirlo con el CTA. */
.nav-clientes {
  font-size: .9rem !important; color: var(--muted) !important;
  border: 1px solid var(--line); border-radius: 999px; padding: .45rem .9rem;
}
.nav-clientes:hover { color: var(--ink) !important; border-color: var(--muted); }
@media (max-width: 760px) {
  .nav-clientes { border: none; border-bottom: 1px solid var(--line) !important;
                  border-radius: 0; padding: .8rem 0; }
}

/* Lista de enlaces de rescate en la página 404. */
.plain-links { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: .7rem; }
.plain-links a { font-size: 1.02rem; font-weight: 600; }