/* ═══════════════════════════════════════════════════════════════
   Nexus Digital Agency — Design System
   Tema claro / blanco hueso · azul marino oficial (#0D1B3E)
   ═══════════════════════════════════════════════════════════════ */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  /* Superficies */
  --bone:      #F7F4EE;   /* blanco hueso — fondo principal */
  --bone-soft: #FBF9F5;   /* fondo alterno, secciones */
  --white:     #FFFFFF;   /* tarjetas, nav */
  --card:      #FFFFFF;

  /* Marca — azul marino oficial Nexus */
  --navy:      #0D1B3E;   /* azul marino profundo — base, confianza */
  --navy-mid:  #162447;
  --blue:      #1E4D8C;   /* azul sistema */
  --electric:  #2E7BFF;   /* azul eléctrico — acción */
  --cyan:      #00D4F5;   /* cian digital — resaltado */

  /* Texto */
  --ink:       #0D1B3E;   /* headings */
  --text:      #16213D;   /* cuerpo fuerte */
  --muted:     #475569;   /* cuerpo, mínimo AA sobre --bone */
  --mutedl:    #64748B;   /* texto secundario */

  --border:    #E6E1D3;
  --border-soft: rgba(13,27,62,0.08);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background: var(--bone);
  color: var(--text);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Decorative blobs ── */
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
}

/* ── Gradient text ── */
.g-text {
  background: linear-gradient(135deg, var(--navy) 0%, var(--electric) 55%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Subtle grid overlay ──
   Applied via ::before so the mask fades only the background pattern,
   never the section's actual content (text, buttons, etc). */
.grid-bg { position: relative; }
.grid-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(13,27,62,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13,27,62,0.035) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
}
.grid-bg > *:not(.blob) { position: relative; z-index: 1; }

/* ── Cards ── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  transition: border-color .25s, transform .25s, box-shadow .25s;
}
.card:hover {
  border-color: rgba(46,123,255,.35);
  transform: translateY(-3px);
  box-shadow: 0 14px 36px rgba(13,27,62,.08);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
  transition: all .2s;
  border: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--navy), var(--electric));
  color: white;
  padding: 14px 28px;
}
.btn-primary:hover {
  opacity: .92;
  transform: translateY(-1px);
  box-shadow: 0 10px 28px rgba(46,123,255,.28);
}
.btn-ghost {
  background: transparent;
  color: var(--navy);
  padding: 14px 28px;
  border: 1.5px solid var(--border);
}
.btn-ghost:hover { border-color: var(--electric); background: rgba(46,123,255,.05); }

/* ── Nav ── */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  padding: 20px 0;
  transition: all .3s;
  background: rgba(247,244,238,0);
}
#nav.scrolled {
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  position: relative;
  transition: color .2s;
  cursor: pointer;
}
.nav-link:hover { color: var(--navy); }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 2px;
  background: var(--electric);
  transition: width .2s;
  border-radius: 2px;
}
.nav-link:hover::after { width: 100%; }

/* ── Nav dropdown ── */
.nav-dropdown { position: relative; }
.nav-dropdown-panel {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 300px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 20px 48px rgba(13,27,62,.14);
  padding: 10px;
  opacity: 0;
  visibility: hidden;
  transition: opacity .18s, transform .18s, visibility .18s;
  z-index: 60;
}
.nav-dropdown:hover .nav-dropdown-panel,
.nav-dropdown:focus-within .nav-dropdown-panel {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  text-decoration: none;
  transition: background .15s;
}
.nav-dropdown-item:hover { background: var(--bone); }
.nav-dropdown-item .icn {
  width: 34px; height: 34px; border-radius: 9px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(46,123,255,.1);
}
.nav-dropdown-item strong { display: block; font-size: 14px; color: var(--ink); font-weight: 700; margin-bottom: 2px; }
.nav-dropdown-item span { font-size: 12.5px; color: var(--mutedl); line-height: 1.4; }

/* ── Divider ── */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(13,27,62,.12), transparent);
  max-width: 1280px;
  margin: 0 auto;
}

/* ── Pill tags ── */
.pill {
  border-radius: 6px;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 600;
}

/* ── Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(46,123,255,.08);
  border: 1px solid rgba(46,123,255,.22);
  border-radius: 100px;
  padding: 6px 14px;
}

/* ── Scroll fade-in ── */
.fade {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .65s ease, transform .65s ease;
}
.fade.visible { opacity: 1; transform: none; }

/* ── Badge pulse ── */
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.35} }
.pulse { animation: pulse 2.2s infinite; }

/* ── Section label ── */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--electric);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.eyebrow::before { content: ''; width: 18px; height: 2px; background: var(--electric); border-radius: 2px; }

/* ── Floating WhatsApp ── */
.fab-whatsapp {
  position: fixed; bottom: 28px; right: 28px;
  width: 56px; height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 26px rgba(37,211,102,.35);
  z-index: 100; text-decoration: none;
  transition: transform .2s;
}
.fab-whatsapp:hover { transform: scale(1.08); }

/* ── Responsive ── */
@media (max-width: 768px) {
  .footer-cols { grid-template-columns: 1fr !important; gap: 36px !important; }
  .before-after { grid-template-columns: 1fr !important; }
  .before-after .arrow-col { display: none !important; }
  .stats-row { grid-template-columns: 1fr 1fr !important; }
  .nav-dropdown-panel { display: none !important; }
}

@media (prefers-reduced-motion: reduce) {
  .fade { transition: none; opacity: 1; transform: none; }
  .btn-primary:hover, .card:hover { transform: none; }
}