/* ==========================================================================
   GREENSMART Technology — hoja de estilos base
   Variables, reset, tipografia, utilidades y componentes compartidos.
   ========================================================================== */

:root {
  --verde-tech: #4B9B2A;
  --verde-tech-hover: #3d7d22;
  --verde-tech-rgb: 75, 155, 42;
  --verde-oscuro: #123020;
  --negro-azulado: #0B1114;
  --blanco: #FFFFFF;
  --gris-claro: #F5F6F4;
  --gris-medio: #6B7280;
  --gris-borde: #E3E6E1;

  --radio-sm: 10px;
  --radio-md: 12px;
  --radio-lg: 16px;

  --sombra-suave: 0 4px 20px rgba(11, 17, 20, 0.08);
  --sombra-hover: 0 12px 32px rgba(18, 48, 32, 0.16);

  --gradiente-verde: linear-gradient(135deg, var(--verde-oscuro) 0%, var(--negro-azulado) 100%);

  --fuente-titulos: 'Sora', sans-serif;
  --fuente-cuerpo: 'Inter', sans-serif;

  --transicion: all 0.25s ease;
  --franja-topbar: 40px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
  overflow-x: hidden;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--fuente-cuerpo);
  color: var(--negro-azulado);
  background: var(--blanco);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

button {
  font-family: inherit;
}

h1, h2, h3, h4 {
  font-family: var(--fuente-titulos);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 16px;
  letter-spacing: -0.01em;
}

p {
  margin: 0 0 16px;
  color: var(--gris-medio);
}

.icono {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

/* ==========================================================================
   Utilidades de layout
   ========================================================================== */

.contenedor {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.seccion {
  padding: 88px 0;
}

.seccion-gris {
  background: var(--gris-claro);
}

.titulo-seccion {
  text-align: center;
  font-size: clamp(1.7rem, 3.2vw, 2.5rem);
  margin-bottom: 12px;
}

.subtitulo-seccion {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 56px;
  font-size: 1.05rem;
}

.resaltado,
.resaltado-verde {
  color: var(--verde-tech);
}

.titulo-con-hojas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
}

.icono-hoja-titulo {
  width: 26px;
  height: 26px;
  color: var(--verde-tech);
  opacity: 0.85;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--fuente-titulos);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--verde-tech);
  margin-bottom: 14px;
}

.eyebrow::before {
  content: '';
  width: 26px;
  height: 2px;
  background: var(--verde-tech);
  border-radius: 2px;
}

.eyebrow-centrado {
  display: flex;
  justify-content: center;
}

/* ==========================================================================
   Botones
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radio-sm);
  font-weight: 600;
  font-size: 0.95rem;
  font-family: var(--fuente-cuerpo);
  border: none;
  cursor: pointer;
  transition: var(--transicion);
  white-space: nowrap;
}

.btn-grande {
  padding: 16px 36px;
  font-size: 1rem;
}

.btn-primario {
  background: var(--verde-tech);
  color: var(--blanco);
}

.btn-primario:hover {
  background: var(--verde-tech-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(var(--verde-tech-rgb), 0.35);
}

.btn-primario .icono {
  transition: transform 0.25s ease;
}

.btn-primario:hover .icono {
  transform: translateX(3px);
}

.btn-secundario {
  background: transparent;
  color: var(--verde-tech);
  border: 2px solid var(--verde-tech);
  padding: 12px 26px;
}

.btn-secundario:hover {
  background: var(--verde-tech);
  color: var(--blanco);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

/* ==========================================================================
   Animaciones de aparicion (scroll)
   ========================================================================== */

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ==========================================================================
   Topbar
   ========================================================================== */

.topbar {
  background: var(--negro-azulado);
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
  height: var(--franja-topbar);
}

.topbar .contenedor {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar-redes {
  display: flex;
  align-items: center;
  gap: 16px;
}

.topbar-redes a {
  display: flex;
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s ease;
}

.topbar-redes a:hover {
  color: var(--verde-tech);
}

.topbar-redes .icono {
  width: 15px;
  height: 15px;
}

.topbar-contacto {
  display: flex;
  align-items: center;
  gap: 24px;
}

.topbar-contacto a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s ease;
}

.topbar-contacto a:hover {
  color: var(--verde-tech);
}

.topbar-contacto .icono {
  width: 15px;
  height: 15px;
}

@media (max-width: 640px) {
  .topbar {
    display: none;
  }
}

/* ==========================================================================
   Navbar
   ========================================================================== */

.navbar {
  background: var(--blanco);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: box-shadow 0.25s ease;
}

.navbar.con-sombra {
  box-shadow: var(--sombra-suave);
}

.navbar .contenedor {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-img {
  height: 46px;
  width: auto;
  display: block;
}

.navbar-derecha {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-menu a {
  position: relative;
  font-weight: 600;
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--negro-azulado);
  padding: 6px 0;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--verde-tech);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.nav-menu a:hover::after,
.nav-menu li.active a::after {
  transform: scaleX(1);
}

.nav-menu li.active a {
  color: var(--verde-tech);
}

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

.nav-carrito {
  position: relative;
  display: flex;
  color: var(--negro-azulado);
  transition: color 0.2s ease;
}

.nav-carrito:hover {
  color: var(--verde-tech);
}

.nav-carrito .icono {
  width: 23px;
  height: 23px;
}

.badge-carrito {
  position: absolute;
  top: -8px;
  right: -10px;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  border-radius: 999px;
  background: var(--verde-tech);
  color: var(--blanco);
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.badge-carrito[hidden] {
  display: none;
}

.nav-toggle {
  display: none;
  position: relative;
  z-index: 10;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--verde-oscuro);
  padding: 4px;
}

.nav-toggle .icono {
  width: 26px;
  height: 26px;
}

.nav-toggle .icono-cerrar {
  display: none;
}

.nav-toggle[aria-expanded="true"] .icono-menu {
  display: none;
}

.nav-toggle[aria-expanded="true"] .icono-cerrar {
  display: block;
}

@media (max-width: 900px) {
  .navbar-derecha {
    gap: 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    inset: 0 0 0 28%;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: 28px;
    background: var(--blanco);
    padding: 40px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    box-shadow: -12px 0 32px rgba(11, 17, 20, 0.12);
  }

  .nav-menu.abierto {
    transform: translateX(0);
  }

  .nav-menu a {
    font-size: 1.05rem;
  }
}

@media (max-width: 480px) {
  .nav-menu {
    inset: 0;
  }
}

/* ==========================================================================
   Tarjetas de servicio (home)
   ========================================================================== */

.grid-servicios-principales {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.tarjeta-servicio {
  background: var(--blanco);
  border-radius: var(--radio-lg);
  box-shadow: var(--sombra-suave);
  padding: 36px 28px;
  text-align: left;
  transition: var(--transicion);
  border: 1px solid transparent;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.tarjeta-servicio .btn {
  margin-top: auto;
  align-self: flex-start;
}

.tarjeta-servicio:hover {
  transform: translateY(-8px);
  box-shadow: var(--sombra-hover);
  border-color: rgba(var(--verde-tech-rgb), 0.25);
}

.tarjeta-servicio .icono-circulo {
  width: 84px;
  height: 84px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  margin-left: -6px;
  transition: var(--transicion);
}

.tarjeta-servicio:hover .icono-circulo {
  transform: translateY(-3px);
}

.tarjeta-servicio .icono-circulo .icono {
  width: 76px;
  height: 76px;
}

.imagen-servicio-principal {
  display: block;
  height: 96px;
  width: auto;
  max-width: 100%;
  align-self: center;
  margin: 0 auto 16px;
  transition: var(--transicion);
}

.tarjeta-servicio:hover .imagen-servicio-principal {
  transform: translateY(-3px);
}

.tarjeta-servicio h3 {
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  margin-bottom: 10px;
}

.tarjeta-servicio p {
  font-size: 0.92rem;
  margin-bottom: 22px;
  min-height: 66px;
}

/* ==========================================================================
   Tarjetas mini (servicios integrales)
   ========================================================================== */

.grid-servicios-integrales {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.tarjeta-mini {
  background: var(--blanco);
  border: 1px solid var(--gris-borde);
  border-radius: var(--radio-md);
  padding: 26px 22px;
  transition: var(--transicion);
}

.tarjeta-mini:hover {
  border-color: var(--verde-tech);
  transform: translateY(-4px);
  box-shadow: var(--sombra-suave);
}

.imagen-servicio {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radio-md);
  box-shadow: var(--sombra-suave);
  margin-bottom: 14px;
  transition: var(--transicion);
}

.tarjeta-mini:hover .imagen-servicio {
  transform: translateY(-2px) scale(1.03);
  box-shadow: var(--sombra-hover);
}

.tarjeta-mini h4 {
  font-size: 0.98rem;
  margin-bottom: 8px;
}

.tarjeta-mini p {
  font-size: 0.87rem;
  margin-bottom: 0;
}

/* ==========================================================================
   Proceso (linea de tiempo de pasos)
   ========================================================================== */

.proceso {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  position: relative;
}

.proceso::before {
  content: '';
  position: absolute;
  top: 24px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: var(--gris-borde);
  z-index: 0;
}

.paso-proceso {
  position: relative;
  z-index: 1;
  text-align: center;
}

.paso-numero {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--verde-tech);
  color: var(--blanco);
  font-family: var(--fuente-titulos);
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 8px 20px rgba(var(--verde-tech-rgb), 0.35);
}

.paso-proceso h4 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.paso-proceso p {
  font-size: 0.88rem;
}

@media (max-width: 900px) {
  .proceso {
    grid-template-columns: 1fr 1fr;
    row-gap: 40px;
  }

  .proceso::before {
    display: none;
  }
}

@media (max-width: 560px) {
  .proceso {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Banda CTA
   ========================================================================== */

.banda-cta {
  background: var(--gradiente-verde);
  color: var(--blanco);
  text-align: center;
  padding: 72px 24px;
}

.banda-cta h3 {
  color: var(--blanco);
  font-size: clamp(1.4rem, 3vw, 2rem);
  margin-bottom: 24px;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background: var(--verde-oscuro);
  color: rgba(255, 255, 255, 0.78);
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.logo-footer .logo-img {
  height: 52px;
}

.footer-descripcion {
  margin: 18px 0 20px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
  max-width: 280px;
}

.footer-redes {
  display: flex;
  gap: 14px;
}

.footer-redes a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transicion);
}

.footer-redes a:hover {
  background: var(--verde-tech);
  border-color: var(--verde-tech);
  transform: translateY(-3px);
}

.footer-redes .icono {
  width: 15px;
  height: 15px;
}

.footer h4 {
  color: var(--blanco);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 22px;
}

.footer-enlaces li {
  margin-bottom: 12px;
}

.footer-enlaces a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.68);
  transition: color 0.2s ease;
}

.footer-enlaces a:hover {
  color: var(--verde-tech);
}

.footer-contacto li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.68);
}

.footer-contacto .icono {
  width: 17px;
  height: 17px;
  color: var(--verde-tech);
  margin-top: 2px;
}

.footer-bottom {
  text-align: center;
  padding: 24px 0;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.55);
}

.grid-servicios-integrales.grid-3-cols {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 900px) {
  .grid-servicios-principales,
  .grid-servicios-integrales,
  .grid-servicios-integrales.grid-3-cols {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    row-gap: 40px;
  }
}

@media (max-width: 768px) {
  .seccion {
    padding: 64px 0;
  }
}

@media (max-width: 560px) {
  .grid-servicios-principales,
  .grid-servicios-integrales,
  .grid-servicios-integrales.grid-3-cols {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Contacto
   ========================================================================== */

.seccion-contacto {
  background: var(--gradiente-verde);
  color: var(--blanco);
  padding: 96px 0;
  position: relative;
  overflow: hidden;
}

.seccion-contacto::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(75, 155, 42, 0.28), transparent 55%),
    radial-gradient(circle at 85% 80%, rgba(75, 155, 42, 0.2), transparent 55%);
  pointer-events: none;
}

.seccion-contacto .contenedor {
  position: relative;
  z-index: 1;
}

.contacto-cabecera {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.contacto-cabecera h1 {
  color: var(--blanco);
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
}

.contacto-cabecera p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.05rem;
}

.contacto-layout {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 40px;
  align-items: start;
}

.alerta-exito {
  background: #EAF7E4;
  border: 1px solid var(--verde-tech);
  color: var(--verde-oscuro);
  padding: 18px 22px;
  border-radius: var(--radio-md);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
}

.alerta-exito .icono {
  color: var(--verde-tech);
  flex-shrink: 0;
}

.form-contacto {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  border-radius: var(--radio-lg);
  padding: 40px;
  box-shadow: var(--sombra-hover);
}

.fila-formulario {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.campo-formulario {
  margin-bottom: 20px;
}

.campo-formulario label {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--negro-azulado);
  margin-bottom: 7px;
}

.campo-formulario input[type="text"],
.campo-formulario input[type="email"],
.campo-formulario input[type="tel"],
.campo-formulario input[type="file"],
.campo-formulario select,
.campo-formulario textarea {
  width: 100%;
  max-width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--gris-borde);
  border-radius: var(--radio-sm);
  font-family: var(--fuente-cuerpo);
  font-size: 0.95rem;
  color: var(--negro-azulado);
  background: var(--blanco);
  transition: var(--transicion);
}

.campo-formulario textarea {
  resize: vertical;
  min-height: 120px;
}

.campo-formulario input:focus,
.campo-formulario select:focus,
.campo-formulario textarea:focus {
  outline: none;
  border-color: var(--verde-tech);
  box-shadow: 0 0 0 3px rgba(var(--verde-tech-rgb), 0.15);
}

.campo-formulario input.campo-error,
.campo-formulario select.campo-error,
.campo-formulario textarea.campo-error {
  border-color: #D64545;
}

.mensaje-error {
  display: block;
  color: #D64545;
  font-size: 0.82rem;
  margin-top: 6px;
}

.campo-ayuda {
  display: block;
  color: var(--gris-medio);
  font-size: 0.8rem;
  margin-top: 6px;
}

.contacto-info {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radio-lg);
  padding: 32px;
}

.contacto-info h3 {
  color: var(--blanco);
  font-size: 1.15rem;
  margin-bottom: 18px;
}

.contacto-info ul li {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.85);
}

.contacto-info .icono {
  color: var(--verde-tech);
  width: 19px;
  height: 19px;
  flex-shrink: 0;
}

.contacto-info .footer-redes {
  margin-top: 24px;
}

@media (max-width: 900px) {
  .contacto-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .fila-formulario {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .form-contacto {
    padding: 28px 22px;
  }
}