/* =========================================================================
   DaR NeTwOrKs — Hoja de estilos principal
   Sistema de diseño definido en la propuesta Etapa 1 (paleta dual-acento
   rojo/acero sobre fondo azul-negro). Un solo archivo para todo el sitio,
   sin preprocesadores ni paso de compilación.
   ========================================================================= */

:root {
  /* Color */
  --bg: #0B0E13;
  --bg-elev: #12161D;
  --bg-elev-2: #1A2029;
  --bg-elev-3: #212836;
  --border: #262E3A;
  --border-soft: #1D2430;

  --text-1: #F1F3F6;
  --text-2: #9AA4B2;
  --text-3: #626C7A;

  --red: #D6362B;
  --red-hi: #EA463A;
  --red-soft: rgba(214, 54, 43, .14);
  --red-line: rgba(214, 54, 43, .38);

  --steel: #6C9BB8;
  --steel-soft: rgba(108, 155, 184, .14);
  --steel-line: rgba(108, 155, 184, .4);

  --ok: #4CAF6D;
  --err: #E5484D;

  /* Radios / sombras */
  --radius-s: 6px;
  --radius-m: 10px;
  --radius-l: 16px;
  --shadow-card: 0 20px 40px -28px rgba(0, 0, 0, .6);

  /* Tipografía */
  --font-display: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "Cascadia Code", "SFMono-Regular", Menlo, Consolas, monospace;

  /* Layout */
  --header-h: 76px;
  --container: 1180px;
}

/* ---------------------------------------------------------------------- */
/* Reset básico                                                           */
/* ---------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text-1);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5 { margin: 0; font-family: var(--font-display); font-weight: 700; text-wrap: balance; color: var(--text-1); }
p { margin: 0; }
::selection { background: var(--red-soft); color: var(--text-1); }
:focus-visible { outline: 2px solid var(--steel); outline-offset: 3px; border-radius: 4px; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 780px; margin: 0 auto; padding: 0 24px; }

/* ---------------------------------------------------------------------- */
/* Utilidades de texto                                                    */
/* ---------------------------------------------------------------------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--steel);
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--steel-line); }
.eyebrow.center { justify-content: center; }
.eyebrow.center::before { display: none; }

.section-head { max-width: 660px; margin: 0 auto 44px; text-align: center; }
.section-head h2 { font-size: clamp(22px, 2.8vw, 30px); margin: 0 0 12px; }
.section-head p { color: var(--text-2); font-size: 15px; }

.text-muted { color: var(--text-2); }

/* ---------------------------------------------------------------------- */
/* Botones                                                                */
/* ---------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 14.5px;
  font-weight: 600;
  padding: 13px 24px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
}
.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { background: var(--red-hi); transform: translateY(-1px); box-shadow: 0 10px 24px -10px rgba(214, 54, 43, .55); }
.btn-ghost { border-color: var(--border); color: var(--text-1); background: transparent; }
.btn-ghost:hover { border-color: var(--steel-line); background: var(--steel-soft); }
.btn-block { width: 100%; }
.btn-sm { padding: 10px 16px; font-size: 13.5px; }

/* ---------------------------------------------------------------------- */
/* Header                                                                 */
/* ---------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(11, 14, 19, .88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-soft);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 20px; width: 100%; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 40px; width: 40px; object-fit: contain; }
.brand .name { font-family: var(--font-display); font-weight: 700; font-size: 16px; letter-spacing: .01em; }
.brand .name em { color: var(--red-hi); font-style: normal; }
.brand .tag { font-size: 10px; color: var(--text-3); font-family: var(--font-mono); letter-spacing: .05em; margin-top: 1px; }

.nav-desktop { display: flex; align-items: center; gap: 30px; }
.nav-desktop a { font-size: 13.8px; color: var(--text-2); transition: color .15s ease; }
.nav-desktop a:hover, .nav-desktop a[aria-current="page"] { color: var(--text-1); }

.nav-item-dd { position: relative; }
.nav-item-dd > button {
  background: none; border: none; cursor: pointer; font: inherit; color: var(--text-2);
  display: flex; align-items: center; gap: 6px; padding: 8px 0; font-size: 13.8px;
}
.nav-item-dd > button:hover { color: var(--text-1); }
.nav-item-dd svg { width: 9px; height: 9px; transition: transform .15s ease; }
.nav-item-dd[data-open="true"] svg { transform: rotate(180deg); }
.dropdown {
  position: absolute; top: calc(100% + 10px); left: 50%; transform: translateX(-50%);
  background: var(--bg-elev-2); border: 1px solid var(--border); border-radius: var(--radius-m);
  min-width: 280px; padding: 10px; box-shadow: var(--shadow-card);
  display: none; grid-template-columns: 1fr; gap: 2px;
}
.nav-item-dd[data-open="true"] .dropdown { display: grid; }
.dropdown a { display: block; padding: 9px 12px; border-radius: 7px; font-size: 13.5px; color: var(--text-2); }
.dropdown a:hover { background: var(--bg-elev-3); color: var(--text-1); }

.header-cta { display: flex; align-items: center; gap: 16px; }

.hamburger {
  display: none; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; padding: 8px;
}
.hamburger span { width: 20px; height: 2px; background: var(--text-1); border-radius: 2px; transition: transform .2s ease, opacity .2s ease; }
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.mobile-nav {
  display: none; position: fixed; inset: var(--header-h) 0 0 0; background: var(--bg);
  z-index: 99; overflow-y: auto; padding: 8px 24px 40px;
}
.mobile-nav.open { display: block; }
.mobile-nav a {
  display: flex; justify-content: space-between; align-items: center; padding: 16px 4px;
  border-bottom: 1px solid var(--border-soft); font-size: 15.5px; color: var(--text-1);
}
.mobile-nav .sub a { padding-left: 18px; font-size: 14px; color: var(--text-2); border-bottom: none; }
.mobile-nav .btn { margin-top: 22px; }

@media (max-width: 900px) {
  .nav-desktop, .header-cta .btn-primary { display: none; }
  .hamburger { display: flex; }
}

/* ---------------------------------------------------------------------- */
/* Hero (inicio)                                                          */
/* ---------------------------------------------------------------------- */
.hero {
  position: relative;
  padding: 96px 24px 84px;
  text-align: center;
  overflow: hidden;
  background: radial-gradient(680px 340px at 50% -10%, var(--red-soft), transparent 70%), var(--bg);
}
.hero-eyebrow { font-family: var(--font-mono); font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--steel); margin: 0 0 22px; }
.hero h1 { font-size: clamp(32px, 4.6vw, 54px); line-height: 1.08; letter-spacing: -.015em; margin: 0 auto 22px; max-width: 17ch; }
.hero h1 em { font-style: normal; color: var(--red-hi); }
.hero .sub { color: var(--text-2); font-size: 17px; max-width: 54ch; margin: 0 auto 36px; }
.hero-ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-meta { display: flex; gap: 34px; justify-content: center; margin-top: 54px; flex-wrap: wrap; }
.hero-meta .item { font-family: var(--font-mono); font-size: 11.5px; color: var(--text-3); }
.hero-meta .item b { color: var(--text-2); font-weight: 600; }

/* Hero reducido para páginas internas */
.page-hero {
  padding: 62px 24px 48px;
  text-align: left;
  background: radial-gradient(500px 220px at 12% -20%, var(--red-soft), transparent 70%), var(--bg);
  border-bottom: 1px solid var(--border-soft);
}
.breadcrumb { font-family: var(--font-mono); font-size: 11.5px; color: var(--text-3); margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--text-2); }
.page-hero h1 { font-size: clamp(26px, 3.6vw, 38px); max-width: 24ch; margin: 0 0 16px; }
.page-hero .sub { color: var(--text-2); font-size: 16px; max-width: 62ch; margin: 0; }

/* ---------------------------------------------------------------------- */
/* Secciones genéricas                                                    */
/* ---------------------------------------------------------------------- */
.section { padding: 72px 0; }
.section-border-t { border-top: 1px solid var(--border-soft); }
.section-elev { background: var(--bg-elev); border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); }

/* ---------------------------------------------------------------------- */
/* Tarjetas de servicio                                                   */
/* ---------------------------------------------------------------------- */
.svc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 980px) { .svc-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .svc-grid { grid-template-columns: 1fr; } }

.svc-card {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius-m);
  padding: 24px 22px; transition: border-color .18s ease, transform .18s ease, background .18s ease;
}
.svc-card:hover { border-color: var(--steel-line); background: var(--bg-elev-2); transform: translateY(-2px); }
.svc-ic { width: 40px; height: 40px; border-radius: 9px; background: var(--red-soft); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.svc-ic svg { width: 20px; height: 20px; stroke: var(--red-hi); fill: none; stroke-width: 1.6; }
.svc-card h3 { font-size: 15px; margin: 0 0 8px; }
.svc-card p { font-size: 13.2px; color: var(--text-2); line-height: 1.55; }
.svc-card .lnk { display: inline-flex; align-items: center; gap: 5px; margin-top: 16px; font-size: 12.5px; font-weight: 600; color: var(--steel); }
.svc-card .lnk:hover { color: var(--text-1); }

/* ---------------------------------------------------------------------- */
/* Bandas destacadas (cableado / vulnerabilidades)                        */
/* ---------------------------------------------------------------------- */
.band-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
@media (max-width: 900px) { .band-grid { grid-template-columns: 1fr; } }
.band-tag {
  display: inline-block; font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--steel); background: var(--steel-soft); border: 1px solid var(--steel-line); padding: 5px 10px; border-radius: 6px; margin-bottom: 16px;
}
.band-tag.red { color: #FFD3CE; background: var(--red-soft); border-color: var(--red-line); }
.band h3 { font-size: 24px; margin: 0 0 14px; }
.band p.lead { color: var(--text-2); font-size: 15px; margin: 0 0 22px; max-width: 50ch; }
.chk-list { display: grid; gap: 11px; margin: 0 0 26px; }
.chk-list li { display: flex; gap: 10px; font-size: 13.8px; color: var(--text-2); align-items: flex-start; }
.chk-list li svg { width: 15px; height: 15px; flex: none; margin-top: 3px; stroke: var(--red-hi); fill: none; stroke-width: 2; }

.flow-wrap { overflow-x: auto; padding: 6px 2px; }
figure.flow { margin: 0; }
figure.flow svg { min-width: 560px; }
figure.flow figcaption { margin-top: 12px; font-size: 11.8px; color: var(--text-3); font-family: var(--font-mono); text-align: center; }

/* ---------------------------------------------------------------------- */
/* Badges de tecnología                                                   */
/* ---------------------------------------------------------------------- */
.badge-row { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.badge { font-family: var(--font-mono); font-size: 12px; color: var(--text-2); border: 1px solid var(--border); background: var(--bg-elev); padding: 8px 14px; border-radius: 7px; }

/* ---------------------------------------------------------------------- */
/* Por qué elegirnos                                                      */
/* ---------------------------------------------------------------------- */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 760px) { .why-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .why-grid { grid-template-columns: 1fr; } }
.why-card { padding: 20px; border: 1px solid var(--border-soft); border-radius: var(--radius-m); background: var(--bg-elev); }
.why-card b { display: block; font-size: 14px; color: var(--text-1); margin-bottom: 6px; }
.why-card span { font-size: 13px; color: var(--text-3); }

/* ---------------------------------------------------------------------- */
/* Metodología de vulnerabilidades (lista numerada)                       */
/* ---------------------------------------------------------------------- */
.steps-num { display: grid; gap: 16px; }
.steps-num li { display: flex; gap: 14px; align-items: flex-start; }
.steps-num .n {
  font-family: var(--font-mono); font-size: 11px; color: var(--red-hi); background: var(--red-soft);
  border: 1px solid var(--red-line); width: 26px; height: 26px; border-radius: 50%; flex: none;
  display: flex; align-items: center; justify-content: center; margin-top: 1px;
}
.steps-num div p { margin: 0; font-size: 14.2px; color: var(--text-2); }
.steps-num div b { color: var(--text-1); }

/* ---------------------------------------------------------------------- */
/* CTA final                                                              */
/* ---------------------------------------------------------------------- */
.cta-final {
  text-align: center; padding: 70px 28px;
  background: radial-gradient(600px 260px at 50% 0%, var(--red-soft), transparent 70%), var(--bg-elev);
  border-radius: var(--radius-l); border: 1px solid var(--border);
}
.cta-final h2 { margin: 0 0 12px; font-size: clamp(21px, 2.6vw, 27px); }
.cta-final p { color: var(--text-2); max-width: 58ch; margin: 0 auto 28px; font-size: 15px; }

/* ---------------------------------------------------------------------- */
/* Formulario de contacto                                                 */
/* ---------------------------------------------------------------------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 13px; font-weight: 600; color: var(--text-1); }
.field .req { color: var(--red-hi); }
.field input, .field select, .field textarea {
  font: inherit; font-size: 14.5px; color: var(--text-1); background: var(--bg-elev);
  border: 1px solid var(--border); border-radius: var(--radius-s); padding: 12px 14px;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--steel); box-shadow: 0 0 0 3px var(--steel-soft);
}
.field textarea { resize: vertical; min-height: 120px; }
.field .error-msg { font-size: 12.3px; color: var(--err); min-height: 15px; }
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: var(--err); }
/* Honeypot: oculto para humanos, visible para bots que rellenan todo */
.hp-field { position: absolute; left: -9999px; top: -9999px; opacity: 0; height: 0; width: 0; overflow: hidden; }

.form-note { font-size: 12.5px; color: var(--text-3); margin-top: 16px; }
.form-status {
  display: none; margin-top: 18px; padding: 14px 16px; border-radius: var(--radius-s); font-size: 14px;
}
.form-status.show { display: block; }
.form-status.ok { background: rgba(76, 175, 109, .12); border: 1px solid rgba(76, 175, 109, .4); color: #8FE0A8; }
.form-status.fail { background: rgba(229, 72, 77, .12); border: 1px solid rgba(229, 72, 77, .4); color: #F5A3A6; }

.contact-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 48px; align-items: flex-start; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-info { display: grid; gap: 18px; }
.contact-info .row { display: flex; gap: 14px; align-items: flex-start; }
.contact-info .ic { width: 36px; height: 36px; border-radius: 9px; background: var(--steel-soft); display: flex; align-items: center; justify-content: center; flex: none; }
.contact-info .ic svg { width: 17px; height: 17px; stroke: var(--steel); fill: none; stroke-width: 1.6; }
.contact-info .row b { display: block; font-size: 13.6px; color: var(--text-1); margin-bottom: 2px; }
.contact-info .row span, .contact-info .row a { font-size: 13.4px; color: var(--text-2); }
.contact-info .row a:hover { color: var(--text-1); }

/* ---------------------------------------------------------------------- */
/* Footer                                                                 */
/* ---------------------------------------------------------------------- */
.site-footer { padding: 48px 0 28px; background: var(--bg-elev); border-top: 1px solid var(--border-soft); }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
.foot-grid h6 { font-size: 11.5px; letter-spacing: .06em; text-transform: uppercase; color: var(--text-3); margin: 0 0 14px; font-family: var(--font-mono); font-weight: 600; }
.foot-grid ul { display: grid; gap: 10px; }
.foot-grid a, .foot-grid span { font-size: 13.2px; color: var(--text-2); }
.foot-grid a:hover { color: var(--text-1); }
.foot-brand .brand { margin-bottom: 12px; }
.foot-brand .brand img { height: 34px; width: 34px; }
.foot-brand .brand .name { font-size: 14.5px; }
.foot-brand p { font-size: 12.8px; color: var(--text-3); max-width: 34ch; }
.foot-bottom { padding-top: 22px; border-top: 1px solid var(--border-soft); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 12px; color: var(--text-3); }
.foot-bottom a:hover { color: var(--text-2); }

/* ---------------------------------------------------------------------- */
/* Botón flotante de WhatsApp                                             */
/* ---------------------------------------------------------------------- */
.wa-fab {
  position: fixed; right: 22px; bottom: 22px; width: 56px; height: 56px; border-radius: 50%;
  background: #25D366; display: none; align-items: center; justify-content: center; z-index: 200;
  box-shadow: 0 12px 28px -8px rgba(37, 211, 102, .55);
  transition: transform .15s ease;
}
.wa-fab.visible { display: flex; }
.wa-fab:hover { transform: translateY(-2px) scale(1.04); }
.wa-fab svg { width: 27px; height: 27px; fill: #fff; }

/* ---------------------------------------------------------------------- */
/* Bloque de tecnologías en página de servicio                            */
/* ---------------------------------------------------------------------- */
.tech-inline { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 10px; }

/* ---------------------------------------------------------------------- */
/* Beneficios (grid de 2-3 columnas con check)                            */
/* ---------------------------------------------------------------------- */
.benefit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 760px) { .benefit-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .benefit-grid { grid-template-columns: 1fr; } }
.benefit-card { padding: 18px; background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius-m); font-size: 13.6px; color: var(--text-2); }
.benefit-card b { display: block; color: var(--text-1); font-size: 14px; margin-bottom: 4px; }

/* ---------------------------------------------------------------------- */
/* Servicios: índice                                                      */
/* ---------------------------------------------------------------------- */
.svc-index-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
@media (max-width: 720px) { .svc-index-grid { grid-template-columns: 1fr; } }
.svc-index-card {
  display: flex; gap: 16px; padding: 22px; background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--radius-m); transition: border-color .18s ease, background .18s ease, transform .18s ease;
}
.svc-index-card:hover { border-color: var(--steel-line); background: var(--bg-elev-2); transform: translateY(-2px); }
.svc-index-card .svc-ic { margin-bottom: 0; }
.svc-index-card h3 { font-size: 15.5px; margin: 0 0 6px; }
.svc-index-card p { font-size: 13.3px; color: var(--text-2); }

/* ---------------------------------------------------------------------- */
/* Aviso de privacidad / páginas de texto largo                           */
/* ---------------------------------------------------------------------- */
.prose h2 { font-size: 19px; margin: 34px 0 12px; }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { font-size: 14.5px; color: var(--text-2); line-height: 1.75; }
.prose li { margin-left: 20px; list-style: disc; margin-bottom: 6px; }
.prose a { color: var(--steel); text-decoration: underline; }