/* ============================================
   CARPLE ABERTURAS — styles.css
   Paleta: azul industrial + gris acero
   Stack: system-ui + Georgia, sin Google Fonts
   Mobile-first: 480 / 768 / 1024px
   ============================================ */

:root {
  --azul-profundo: #0a1f3c;
  --azul-medio: #1a3a5c;
  --azul-acento: #1e6fa8;
  --azul-claro: #3a8fc7;
  --gris-acero: #4a5568;
  --gris-claro: #e8ecf0;
  --gris-borde: #d1d9e0;
  --blanco: #ffffff;
  --texto-principal: #1a2332;
  --texto-secundario: #4a5568;
  --texto-claro: #718096;

  --fuente-titulo: Georgia, 'Times New Roman', serif;
  --fuente-cuerpo: system-ui, -apple-system, 'Segoe UI', sans-serif;

  --radio: 4px;
  --sombra: 0 2px 12px rgba(10, 31, 60, 0.1);
  --sombra-md: 0 4px 24px rgba(10, 31, 60, 0.15);
  --transicion: 0.2s ease;

  --max-ancho: 1200px;
  --espaciado: clamp(2rem, 5vw, 4rem);
}

/* RESET */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
}
body {
  font-family: var(--fuente-cuerpo);
  color: var(--texto-principal);
  background: var(--blanco);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
ul {
  list-style: none;
}

/* UTILIDADES */
.container {
  max-width: var(--max-ancho);
  margin: 0 auto;
  padding: 0 1.25rem;
}
.seccion {
  padding: var(--espaciado) 0;
}
.seccion-oscura {
  background: var(--azul-profundo);
  color: var(--blanco);
}
.seccion-gris {
  background: var(--gris-claro);
}
.texto-centro {
  text-align: center;
}

/* TIPOGRAFÍA */
h1,
h2,
h3 {
  font-family: var(--fuente-titulo);
  line-height: 1.2;
  color: var(--azul-profundo);
}
.seccion-oscura h1,
.seccion-oscura h2,
.seccion-oscura h3 {
  color: var(--blanco);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
}
h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.4rem);
  margin-bottom: 1rem;
}
h3 {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  margin-bottom: 0.5rem;
}
p {
  margin-bottom: 1rem;
  color: var(--texto-secundario);
}
.seccion-oscura p {
  color: rgba(255, 255, 255, 0.8);
}

.etiqueta {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--azul-claro);
  margin-bottom: 0.75rem;
}
.seccion-oscura .etiqueta {
  color: var(--azul-claro);
}

/* BOTONES */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radio);
  font-family: var(--fuente-cuerpo);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transicion);
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn-primario {
  background: var(--azul-acento);
  color: var(--blanco);
  border-color: var(--azul-acento);
}
.btn-primario:hover {
  background: var(--azul-medio);
  border-color: var(--azul-medio);
}
.btn-secundario {
  background: transparent;
  color: var(--blanco);
  border-color: rgba(255, 255, 255, 0.6);
}
.btn-secundario:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--blanco);
}
.btn-outline {
  background: transparent;
  color: var(--azul-acento);
  border-color: var(--azul-acento);
}
.btn-outline:hover {
  background: var(--azul-acento);
  color: var(--blanco);
}

/* ============ NAV ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: black;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  height: 80px;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-links {
  display: none;
  gap: 2rem;
  align-items: center;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transicion);
}
.nav-links a:hover {
  color: var(--azul-acento);
}
.nav-cta {
  margin-left: 1rem;
}
.nav-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--blanco);
  transition: var(--transicion);
}
.nav-mobile {
  display: none;
  flex-direction: column;
  background: var(--azul-medio);
  padding: 1rem 1.25rem;
  gap: 0;
}
.nav-mobile.activo {
  display: flex;
}
.nav-mobile a {
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
}
.nav-mobile a:last-child {
  border-bottom: none;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
  .nav-toggle {
    display: none;
  }
}

/* ============ HERO ============ */
.hero {
  position: relative;
  background: var(--azul-profundo);
  color: var(--blanco);
  padding: clamp(3rem, 8vw, 6rem) 0;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(10, 31, 60, 0.82) 0%,
    rgba(10, 31, 60, 0.55) 45%,
    rgba(10, 31, 60, 0.15) 100%
  );
  z-index: 1;
}
.hero-bg {
  position: absolute;
  inset: 0;
  object-fit: cover;
  object-position: center 25%;
  width: 100%;
  height: 100%;
  opacity: 0.85;
}
.hero-contenido {
  position: relative;
  z-index: 2;
  max-width: 700px;
}
.hero h1 {
  color: var(--blanco);
  margin-bottom: 1.25rem;
}
.hero p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 2rem;
  max-width: 560px;
}
.hero-acciones {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.hero-stats {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.5rem;
  margin-top: clamp(2rem, 5vw, 3.5rem);
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.stat-numero {
  font-family: var(--fuente-titulo);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--azul-claro);
  display: block;
}
.stat-label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.70);
}

/* ============ PROPUESTA DE VALOR ============ */
.valores-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.valor-card {
  background: var(--blanco);
  border: 1px solid var(--gris-borde);
  border-radius: var(--radio);
  padding: 1.75rem;
  border-top: 3px solid var(--azul-acento);
}
.valor-icono {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  display: block;
}
@media (min-width: 480px) {
  .valores-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 768px) {
  .valores-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============ PRODUCTOS ============ */
.productos-intro {
  max-width: 680px;
  margin: 0 auto 3rem;
}
.categorias-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
.categoria-card {
  background: var(--blanco);
  border: 1px solid var(--gris-borde);
  border-radius: var(--radio);
  overflow: hidden;
  box-shadow: var(--sombra);
  transition:
    box-shadow var(--transicion),
    transform var(--transicion);
}
.categoria-card:hover {
  box-shadow: var(--sombra-md);
  transform: translateY(-2px);
}
.categoria-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  background: var(--gris-claro);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--texto-claro);
  font-size: 0.85rem;
}
.categoria-body {
  padding: 1.5rem;
}
.categoria-body h3 {
  color: var(--azul-profundo);
}
.lineas-lista {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}
.linea-tag {
  background: var(--gris-claro);
  color: var(--azul-medio);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 2px;
  border: 1px solid var(--gris-borde);
}
@media (min-width: 768px) {
  .categorias-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .categorias-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============ CLIENTES / LOGOS ============ */
.clientes-seccion {
  border-top: 1px solid var(--gris-borde);
}
.clientes-intro {
  font-size: 0.9rem;
  color: var(--texto-claro);
  margin-bottom: 2rem;
}
.logos-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  justify-content: center;
}
.logo-cliente {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 140px;
  height: 64px;
  filter: grayscale(100%) opacity(0.6);
  transition: filter var(--transicion);
}
.logo-cliente:hover {
  filter: grayscale(0%) opacity(1);
}
.logo-cliente img {
  max-height: 48px;
  max-width: 120px;
  object-fit: contain;
}

/* Placeholder logo cuando no hay imagen */
.logo-placeholder {
  width: 140px;
  height: 64px;
  background: var(--gris-claro);
  border: 1px solid var(--gris-borde);
  border-radius: var(--radio);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--texto-claro);
  font-weight: 600;
  letter-spacing: 0.05em;
}

/* ============ PROYECTOS ============ */
.proyectos-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.proyecto-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radio);
  background: var(--gris-claro);
}
.proyecto-img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.proyecto-card:hover .proyecto-img {
  transform: scale(1.03);
}
.proyecto-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(10, 31, 60, 0.9));
  padding: 2rem 1.25rem 1.25rem;
  color: var(--blanco);
}
.proyecto-overlay h3 {
  color: var(--blanco);
  font-size: 1rem;
}
.proyecto-overlay p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.85rem;
  margin: 0;
}
@media (min-width: 480px) {
  .proyectos-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .proyectos-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============ DIFERENCIAL ============ */
.diferencial-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
  margin-top: 2rem;
}
.diferencial-texto p {
  font-size: 1.05rem;
}
.diferencial-lista {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.diferencial-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radio);
  border-left: 3px solid var(--azul-claro);
}
.diferencial-item-icono {
  font-size: 1.4rem;
  flex-shrink: 0;
}
@media (min-width: 768px) {
  .diferencial-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ============ FAQ ============ */
.faq-lista {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 2.5rem;
}
.faq-item {
  border: 1px solid var(--gris-borde);
  border-radius: var(--radio);
  overflow: hidden;
}
.faq-pregunta {
  width: 100%;
  background: none;
  border: none;
  padding: 1.1rem 1.25rem;
  text-align: left;
  font-family: var(--fuente-cuerpo);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--azul-profundo);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  transition: background var(--transicion);
}
.faq-pregunta:hover {
  background: var(--gris-claro);
}
.faq-pregunta[aria-expanded='true'] {
  background: var(--azul-profundo);
  color: var(--blanco);
}
.faq-icono {
  font-size: 1.2rem;
  flex-shrink: 0;
  transition: transform var(--transicion);
}
.faq-pregunta[aria-expanded='true'] .faq-icono {
  transform: rotate(45deg);
}
.faq-respuesta {
  display: none;
  padding: 1rem 1.25rem 1.25rem;
  background: var(--gris-claro);
}
.faq-respuesta.activa {
  display: block;
}
.faq-respuesta p {
  margin: 0;
  font-size: 0.95rem;
}

/* ============ CONTACTO / FORMULARIO ============ */
.contacto-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  margin-top: 2.5rem;
}
.contacto-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.contacto-dato {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.contacto-dato-icono {
  font-size: 1.4rem;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: var(--azul-acento);
  border-radius: var(--radio);
  display: flex;
  align-items: center;
  justify-content: center;
}
.contacto-dato-texto strong {
  display: block;
  font-size: 0.85rem;
  color: var(--texto-claro);
  margin-bottom: 0.2rem;
}
.contacto-dato-texto a:hover {
  color: var(--azul-acento);
}

.form-grupo {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}
.form-grupo label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--texto-principal);
}
.form-grupo input,
.form-grupo select,
.form-grupo textarea {
  padding: 0.75rem 1rem;
  border: 1px solid var(--gris-borde);
  border-radius: var(--radio);
  font-family: var(--fuente-cuerpo);
  font-size: 0.95rem;
  color: var(--texto-principal);
  background: var(--blanco);
  transition:
    border-color var(--transicion),
    box-shadow var(--transicion);
}
.form-grupo input:focus,
.form-grupo select:focus,
.form-grupo textarea:focus {
  outline: none;
  border-color: var(--azul-acento);
  box-shadow: 0 0 0 3px rgba(30, 111, 168, 0.12);
}
.form-grupo textarea {
  resize: vertical;
  min-height: 120px;
}
.form-fila {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
.form-mensaje {
  display: none;
  padding: 1rem;
  border-radius: var(--radio);
  margin-top: 1rem;
  font-size: 0.9rem;
}
.form-mensaje.exito {
  display: block;
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}
.form-mensaje.error {
  display: block;
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

@media (min-width: 480px) {
  .form-fila {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }
}
@media (min-width: 768px) {
  .contacto-grid {
    grid-template-columns: 1fr 1.4fr;
  }
}

/* ============ HORARIOS ============ */
.horarios-tabla {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}
.horarios-tabla td {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--gris-borde);
  font-size: 0.9rem;
}
.horarios-tabla td:first-child {
  color: var(--texto-secundario);
  width: 50%;
}
.horarios-tabla td:last-child {
  font-weight: 600;
  color: var(--texto-principal);
}
.horario-cerrado {
  color: var(--texto-claro) !important;
  font-weight: 400 !important;
}

/* ============ FOOTER ============ */
.footer {
  background: black;
  color: rgba(255, 255, 255, 0.75);
  padding: 3rem 0 1.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-marca p {
  font-size: 0.9rem;
  margin-top: 0.75rem;
}
.footer-logo {
  font-family: var(--fuente-titulo);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--blanco);
}
.footer-logo span {
  color: var(--azul-claro);
}
.footer-col h4 {
  color: var(--blanco);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.footer-col a {
  display: block;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
  padding: 0.25rem 0;
  transition: color var(--transicion);
}
.footer-col a:hover {
  color: var(--blanco);
}
.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-top: 1.5rem;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.45);
}
.footer-bottom a {
  color: rgba(255, 255, 255, 0.55);
}
.footer-bottom a:hover {
  color: var(--blanco);
}

@media (min-width: 480px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
  }
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* ============ WHATSAPP FLOTANTE ============ */
.whatsapp-flotante {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 200;
  width: 56px;
  height: 56px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
  transition:
    transform var(--transicion),
    box-shadow var(--transicion);
}
.whatsapp-flotante:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.55);
}
.whatsapp-flotante svg {
  width: 30px;
  height: 30px;
  fill: var(--blanco);
}

/* ============ BREADCRUMB ============ */
.breadcrumb {
  background: var(--gris-claro);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--gris-borde);
}
.breadcrumb ol {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.85rem;
  color: var(--texto-claro);
}
.breadcrumb li + li::before {
  content: '/';
  margin-right: 0.5rem;
}
.breadcrumb a {
  color: var(--azul-acento);
}
.breadcrumb [aria-current] {
  color: var(--texto-principal);
  font-weight: 600;
}

/* ============ ANIMACIONES ============ */
@media (prefers-reduced-motion: no-preference) {
  .animar {
    transform: translateY(20px);
    transition:
      opacity 0.5s ease,
      transform 0.5s ease;
  }
  .animar.visible {
    opacity: 1;
    transform: translateY(0);
  }
}

  .clientes-seccion {
    border-top: 1px solid var(--gris-borde);
    overflow: hidden;
  }
  .clientes-intro {
    font-size: .9rem;
    color: var(--texto-claro);
    margin-bottom: 2rem;
  }
  .carrusel-wrapper {
    width: 100%;
    overflow: hidden;
    /* fade en los bordes */
    -webkit-mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
    mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
    margin-top: 1rem;
  }
  .carrusel-track {
    display: flex;
    gap: 3rem;
    align-items: center;
    width: max-content;
    animation: carrusel-scroll 28s linear infinite;
  }
  .carrusel-wrapper:hover .carrusel-track {
    animation-play-state: paused;
  }
  @keyframes carrusel-scroll {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
  }
  .carrusel-item {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.25rem;
  }
  .carrusel-item img {
    max-height: 48px;
    max-width: 140px;
    width: auto;
    object-fit: contain;
    /* grises al mismo tono azul-gris */
    filter: grayscale(100%) opacity(0.45) sepia(20%) hue-rotate(180deg);
    transition: filter 0.3s ease;
  }
  .carrusel-item:hover img {
    filter: grayscale(0%) opacity(1);
  }
  @media (prefers-reduced-motion: reduce) {
    .carrusel-track { animation: none; }
  }