/* ==========================================================
   BD Systems — sistema de diseño
   Estilo: claro, amigable, tipo producto SaaS (ref. Alegra)
   ========================================================== */

:root {
  --azul: #4F63F0;
  --azul-hover: #3D50D8;
  --azul-oscuro: #2A3AAE;
  --azul-panel: #EDF2FD;
  --azul-100: #C9D4F8;
  --azul-50: #F5F8FE;
  --tinta: #1E2A3B;
  --texto: #42506A;
  --texto-suave: #8A94AC;
  --fondo: #FBFCFE;
  --blanco: #FFFFFF;
  --borde: #E2E8F4;
  --alerta: #C05621;
  --alerta-bg: #FEF5F0;
  --verde: #1D9E75;
  --verde-bg: #E1F5EE;
  --radio: 14px;
  --radio-sm: 10px;
  --sombra: 0 10px 30px rgba(30, 42, 59, 0.08);
  --sombra-suave: 0 4px 14px rgba(30, 42, 59, 0.06);
  --nav-alto: 72px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-alto) + 16px); }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--fondo);
  color: var(--texto);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--azul); text-decoration: none; }
a:hover { color: var(--azul-hover); }

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ---------- Tipografía ---------- */

h1, h2, h3, h4 { color: var(--tinta); line-height: 1.2; font-weight: 700; letter-spacing: -0.02em; }

h1 { font-size: clamp(2rem, 4.5vw, 3rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.2rem); }
h3 { font-size: 1.25rem; }

.acento { color: var(--azul); }

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--azul);
  margin-bottom: 14px;
}

.lead { font-size: 1.08rem; }

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: 600;
  border-radius: 999px;
  padding: 13px 28px;
  border: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, transform 0.15s, box-shadow 0.2s;
  white-space: nowrap;
}
.btn:active { transform: scale(0.98); }

.btn-primary { background: var(--azul); color: var(--blanco); box-shadow: 0 6px 18px rgba(79, 99, 240, 0.32); }
.btn-primary:hover { background: var(--azul-hover); color: var(--blanco); }

.btn-outline { background: transparent; color: var(--tinta); border: 1.5px solid var(--borde); }
.btn-outline:hover { border-color: var(--azul); color: var(--azul); }

.btn-blanco { background: var(--blanco); color: var(--azul); }
.btn-blanco:hover { background: var(--azul-50); color: var(--azul-oscuro); }

.btn-sm { padding: 9px 20px; font-size: 0.9rem; }

.link-flecha { font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.link-flecha::after { content: '→'; transition: transform 0.2s; }
.link-flecha:hover::after { transform: translateX(4px); }

/* ---------- Navegación ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(251, 252, 254, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.nav.con-sombra { border-bottom-color: var(--borde); box-shadow: 0 2px 12px rgba(30, 42, 59, 0.05); }

.nav-inner {
  height: var(--nav-alto);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo { display: flex; align-items: center; gap: 10px; font-size: 1.15rem; font-weight: 700; color: var(--tinta); }
.logo:hover { color: var(--tinta); }
.logo-cubo {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: var(--azul);
  color: var(--blanco);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.82rem; font-weight: 700; letter-spacing: 0;
}

.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; }
.nav-links > li { position: relative; }
.nav-links a { color: var(--texto); font-size: 0.95rem; font-weight: 500; }
.nav-links a:hover { color: var(--azul); }

.nav-cta { display: flex; align-items: center; gap: 12px; }

/* Dropdown Soluciones */
.dropdown-btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: none; border: none; cursor: pointer;
  font-family: inherit; font-size: 0.95rem; font-weight: 500; color: var(--texto);
  padding: 8px 0;
}
.dropdown-btn:hover, .dropdown-btn[aria-expanded="true"] { color: var(--azul); }
.dropdown-btn svg { transition: transform 0.2s; }
.dropdown-btn[aria-expanded="true"] svg { transform: rotate(180deg); }

.dropdown-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: -16px;
  min-width: 300px;
  background: var(--blanco);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
  padding: 10px;
  display: none;
  z-index: 110;
}
.dropdown-menu.abierto { display: block; }
.dropdown-menu a {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radio-sm);
  color: var(--tinta);
}
.dropdown-menu a:hover { background: var(--azul-50); }
.dropdown-menu .item-icono {
  width: 38px; height: 38px; flex-shrink: 0;
  border-radius: 10px;
  background: var(--azul-panel);
  color: var(--azul);
  display: flex; align-items: center; justify-content: center;
}
.dropdown-menu .item-titulo { font-weight: 600; font-size: 0.93rem; color: var(--tinta); }
.dropdown-menu .item-desc { font-size: 0.82rem; color: var(--texto-suave); line-height: 1.4; }

/* Hamburguesa */
.nav-burger {
  display: none;
  background: none; border: none; cursor: pointer;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  border-radius: 10px;
  color: var(--tinta);
}
.nav-burger:hover { background: var(--azul-50); }

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

.hero { padding: 64px 0 56px; overflow: hidden; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
}
.hero-grid > *, .servicio-bloque > *, .contacto-grid > * { min-width: 0; }

.hero-copy p.lead { margin: 18px 0 28px; max-width: 480px; }

.hero-acciones { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }

.hero-visual { position: relative; }

/* Panel celeste detrás del mockup */
.panel-flotante {
  background: var(--azul-panel);
  border-radius: 22px;
  padding: 26px 26px 0 26px;
}

/* ---------- Mockup dashboard ---------- */

.mock-ventana {
  background: var(--blanco);
  border: 1px solid var(--borde);
  border-bottom: none;
  border-radius: 14px 14px 0 0;
  overflow: hidden;
  box-shadow: var(--sombra);
}
.mock-topbar {
  display: flex; align-items: center; gap: 6px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--borde);
  background: var(--azul-50);
}
.mock-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--azul-100); }
.mock-url { font-size: 0.7rem; color: var(--texto-suave); margin-left: 8px; font-family: ui-monospace, monospace; }

.mock-cuerpo { display: flex; min-height: 240px; }

.mock-sidebar {
  width: 120px; flex-shrink: 0;
  background: var(--azul-50);
  border-right: 1px solid var(--borde);
  padding: 14px 10px;
}
.mock-sidebar .mock-marca { font-size: 0.72rem; font-weight: 700; color: var(--azul); margin-bottom: 14px; }
.mock-item {
  display: flex; align-items: center; gap: 7px;
  font-size: 0.72rem; color: var(--texto-suave);
  padding: 6px 8px; border-radius: 7px; margin-bottom: 2px;
}
.mock-item.activo { background: var(--azul-panel); color: var(--azul); font-weight: 600; }
.mock-item svg { width: 13px; height: 13px; }

.mock-main { flex: 1; padding: 14px 16px; min-width: 0; }

.mock-stats { display: flex; gap: 8px; margin-bottom: 14px; }
.mock-stat { flex: 1; min-width: 0; background: var(--azul-50); border-radius: 9px; padding: 9px 11px; }
.mock-stat .stat-label { font-size: 0.62rem; color: var(--texto-suave); }
.mock-stat .stat-valor { font-size: 0.95rem; font-weight: 700; color: var(--tinta); }
.mock-stat.alerta { background: var(--alerta-bg); }
.mock-stat.alerta .stat-label, .mock-stat.alerta .stat-valor { color: var(--alerta); }

.mock-grafico-label { font-size: 0.66rem; color: var(--texto-suave); margin-bottom: 8px; }
.mock-barras { display: flex; gap: 7px; align-items: flex-end; height: 90px; }
.mock-barra { flex: 1; background: var(--azul-100); border-radius: 4px 4px 0 0; min-height: 12px; transform-origin: bottom; }
.mock-barra.fuerte { background: var(--azul); }

/* Chip flotante de WhatsApp sobre el mockup */
.chip-flotante {
  position: absolute;
  right: -10px; top: -16px;
  background: var(--blanco);
  border: 1px solid var(--borde);
  border-radius: 999px;
  box-shadow: var(--sombra-suave);
  padding: 9px 16px;
  display: flex; align-items: center; gap: 8px;
  font-size: 0.8rem; font-weight: 600; color: var(--tinta);
  animation: flotar 4s ease-in-out infinite;
}
.chip-flotante .punto { width: 8px; height: 8px; border-radius: 50%; background: var(--verde); }

@keyframes flotar {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-7px); }
}

/* ---------- Secciones ---------- */

.seccion { padding: 72px 0; }
.seccion-suave { background: var(--azul-50); }

.seccion-header { max-width: 640px; margin: 0 auto 48px; text-align: center; }
.seccion-header p { margin-top: 14px; }

/* Beneficios (fila de 3) */
.beneficios {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 34px 0;
  border-top: 1px solid var(--borde);
}
.beneficio { text-align: center; padding: 0 12px; }
.beneficio .icono {
  width: 48px; height: 48px; margin: 0 auto 12px;
  border-radius: 13px;
  background: var(--azul-panel); color: var(--azul);
  display: flex; align-items: center; justify-content: center;
}
.beneficio h3 { font-size: 1.02rem; margin-bottom: 4px; }
.beneficio p { font-size: 0.9rem; color: var(--texto-suave); }

/* Bloques alternados de servicios */
.servicio-bloque {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 56px;
  align-items: center;
  padding: 44px 0;
}
.servicio-bloque .visual { order: 0; }
.servicio-bloque.invertido .visual { order: 2; }
.servicio-bloque h2 { margin-bottom: 14px; }
.servicio-bloque ul { list-style: none; margin: 18px 0 24px; }
.servicio-bloque ul li {
  display: flex; align-items: flex-start; gap: 10px;
  margin-bottom: 10px; font-size: 0.97rem;
}
.check {
  flex-shrink: 0;
  width: 21px; height: 21px; margin-top: 2px;
  border-radius: 50%;
  background: var(--azul-panel); color: var(--azul);
  display: inline-flex; align-items: center; justify-content: center;
}
.check svg { width: 12px; height: 12px; }

.visual-panel {
  background: var(--azul-panel);
  border-radius: 20px;
  padding: 28px;
  display: flex; align-items: center; justify-content: center;
  min-height: 300px;
}

/* Tarjeta genérica dentro de visual-panel */
.tarjeta-mock {
  background: var(--blanco);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
  width: 100%;
  max-width: 380px;
  overflow: hidden;
}

/* Proceso (4 pasos) */
.pasos { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: paso; }
.paso {
  background: var(--blanco);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 26px 22px;
  position: relative;
}
.paso .numero {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--azul); color: var(--blanco);
  font-weight: 700; font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.paso h3 { font-size: 1.02rem; margin-bottom: 6px; }
.paso p { font-size: 0.9rem; color: var(--texto-suave); }

/* Cards de proyectos */
.proyectos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.proyecto {
  background: var(--blanco);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 28px 24px;
  display: flex; flex-direction: column; gap: 12px;
  transition: box-shadow 0.25s, transform 0.25s;
}
.proyecto:hover { box-shadow: var(--sombra); transform: translateY(-3px); }
.proyecto .rubro {
  align-self: flex-start;
  font-size: 0.75rem; font-weight: 600;
  color: var(--azul);
  background: var(--azul-panel);
  border-radius: 999px;
  padding: 4px 12px;
}
.proyecto h3 { font-size: 1.05rem; }
.proyecto p { font-size: 0.92rem; }
.proyecto .resultado {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--borde);
  font-size: 0.9rem; font-weight: 600; color: var(--verde);
  display: flex; align-items: center; gap: 8px;
}

/* CTA final */
.cta-banda {
  background: var(--azul);
  border-radius: 24px;
  padding: 56px 48px;
  text-align: center;
  color: var(--blanco);
  position: relative;
  overflow: hidden;
}
.cta-banda::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(255,255,255,0.10) 0, transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(255,255,255,0.08) 0, transparent 40%);
}
.cta-banda > * { position: relative; }
.cta-banda h2 { color: var(--blanco); margin-bottom: 12px; }
.cta-banda p { color: rgba(255,255,255,0.85); max-width: 520px; margin: 0 auto 28px; }

/* FAQ acordeón */
.faq-lista { max-width: 760px; margin: 0 auto; }
.faq-item {
  background: var(--blanco);
  border: 1px solid var(--borde);
  border-radius: var(--radio-sm);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-pregunta {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  background: none; border: none; cursor: pointer;
  font-family: inherit; font-size: 1rem; font-weight: 600; color: var(--tinta);
  text-align: left;
  padding: 18px 22px;
}
.faq-pregunta:hover { color: var(--azul); }
.faq-pregunta svg { flex-shrink: 0; transition: transform 0.25s; color: var(--azul); }
.faq-item.abierto .faq-pregunta svg { transform: rotate(180deg); }
.faq-respuesta { display: none; padding: 0 22px 20px; font-size: 0.95rem; }
.faq-item.abierto .faq-respuesta { display: block; }

/* ---------- Footer ---------- */

.footer {
  background: var(--tinta);
  color: #B8C0D4;
  padding: 56px 0 32px;
  margin-top: 72px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer .logo { color: var(--blanco); margin-bottom: 14px; }
.footer p { font-size: 0.92rem; }
.footer h4 { color: var(--blanco); font-size: 0.95rem; margin-bottom: 16px; }
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 10px; }
.footer a { color: #B8C0D4; font-size: 0.92rem; }
.footer a:hover { color: var(--blanco); }
.footer-legal {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding-top: 26px;
  font-size: 0.85rem;
  flex-wrap: wrap;
}

/* ---------- Botón flotante WhatsApp ---------- */

.wsp-flotante {
  position: fixed;
  right: 22px; bottom: 22px;
  z-index: 90;
  width: 58px; height: 58px;
  border-radius: 50%;
  background: #25D366;
  color: var(--blanco);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
  transition: transform 0.2s;
}
.wsp-flotante:hover { transform: scale(1.08); color: var(--blanco); }
.wsp-flotante svg { width: 30px; height: 30px; }

/* ---------- Animaciones de entrada ---------- */

.js .revelar { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.js .revelar.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .revelar { opacity: 1; transform: none; transition: none; }
  .chip-flotante { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Página de servicio ---------- */

.hero-servicio { padding: 64px 0 48px; }
.hero-servicio .hero-grid { align-items: center; }

.grid-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-features.dos { grid-template-columns: repeat(2, 1fr); max-width: 880px; margin: 0 auto; }
.feature {
  background: var(--blanco);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 26px 24px;
}
.feature .icono {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--azul-panel); color: var(--azul);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.feature h3 { font-size: 1.02rem; margin-bottom: 6px; }
.feature p { font-size: 0.91rem; }

/* Migas de pan */
.migas { font-size: 0.85rem; color: var(--texto-suave); margin-bottom: 20px; }
.migas a { color: var(--texto-suave); }
.migas a:hover { color: var(--azul); }

/* ---------- Formulario de contacto ---------- */

.form-card {
  background: var(--blanco);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  box-shadow: var(--sombra-suave);
  padding: 36px;
}
.form-grupo { margin-bottom: 20px; }
.form-grupo label { display: block; font-size: 0.9rem; font-weight: 600; color: var(--tinta); margin-bottom: 7px; }
.form-grupo input, .form-grupo textarea, .form-grupo select {
  width: 100%;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--tinta);
  background: var(--fondo);
  border: 1.5px solid var(--borde);
  border-radius: var(--radio-sm);
  padding: 12px 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-grupo input:focus, .form-grupo textarea:focus, .form-grupo select:focus {
  outline: none;
  border-color: var(--azul);
  box-shadow: 0 0 0 3px rgba(79, 99, 240, 0.15);
}
.form-grupo textarea { resize: vertical; min-height: 120px; }

.contacto-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 48px; align-items: start; }

.contacto-canal {
  display: flex; align-items: center; gap: 14px;
  background: var(--blanco);
  border: 1px solid var(--borde);
  border-radius: var(--radio-sm);
  padding: 16px 18px;
  margin-bottom: 14px;
  color: var(--tinta);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.contacto-canal:hover { border-color: var(--azul); box-shadow: var(--sombra-suave); color: var(--tinta); }
.contacto-canal .icono {
  width: 42px; height: 42px; flex-shrink: 0;
  border-radius: 11px;
  background: var(--azul-panel); color: var(--azul);
  display: flex; align-items: center; justify-content: center;
}
.contacto-canal .titulo { font-weight: 600; font-size: 0.95rem; }
.contacto-canal .detalle { font-size: 0.85rem; color: var(--texto-suave); }

/* ---------- Responsive ---------- */

@media (max-width: 960px) {
  .hero-grid, .servicio-bloque, .contacto-grid { grid-template-columns: minmax(0, 1fr); }
  .servicio-bloque { gap: 32px; }
  .servicio-bloque .visual, .servicio-bloque.invertido .visual { order: 0; }
  .pasos { grid-template-columns: repeat(2, 1fr); }
  .proyectos, .grid-features { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero { padding: 44px 0; }
  .chip-flotante { right: 4px; }
}

@media (max-width: 700px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-alto);
    left: 0; right: 0;
    background: var(--blanco);
    border-bottom: 1px solid var(--borde);
    box-shadow: var(--sombra);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 24px 20px;
  }
  .nav-links.abierto { display: flex; }
  .nav-links > li { padding: 8px 0; }
  .dropdown-menu { position: static; min-width: 0; box-shadow: none; border: none; padding: 4px 0 0 8px; }
  .nav-burger { display: flex; }
  .nav-cta .btn-outline { display: none; }
  .beneficios { grid-template-columns: 1fr; gap: 28px; }
  .pasos, .proyectos, .grid-features, .grid-features.dos { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-banda { padding: 44px 24px; }
  .seccion { padding: 52px 0; }
  .form-card { padding: 26px 20px; }
}