:root {
  --navy: #10213f;
  --blue: #1e3a8a;
  --blue-dark: #172554;
  --light-blue: #eff6ff;
  --text: #334155;
  --muted: #64748b;
  --border: #dbe4f0;
  --background: #f8fafc;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

.header-bar {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px -8px rgba(16, 33, 63, 0.25);
}

.header {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.5rem 2rem;
}

.nav-toggle-checkbox {
  display: none;
}

.nav-toggle-label {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 0.4rem;
  cursor: pointer;
}

.nav-toggle-label span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 0 auto;
  background: var(--navy);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle-checkbox:checked ~ .nav-toggle-label span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle-checkbox:checked ~ .nav-toggle-label span:nth-child(2) {
  opacity: 0;
}

.nav-toggle-checkbox:checked ~ .nav-toggle-label span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.logo {
  display: flex;
  align-items: center;
  width: 180px;
  height: 72px;
  overflow: hidden;
  text-decoration: none;
}

.logo img {
  display: block;
  width: 180px;
  height: auto;
  mix-blend-mode: multiply;
}
.navigation {
  display: flex;
  gap: 1.5rem;
}

.navigation a {
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
}

.navigation a:hover {
  color: var(--blue);
}

.nav-dropdown {
  position: relative;
  display: flex;
  align-items: center;
}

.nav-dropdown-label {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  cursor: pointer;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
  user-select: none;
}

.nav-dropdown-label::after {
  content: "▾";
  font-size: 0.65rem;
  color: var(--muted);
}

.nav-dropdown-label:hover,
.nav-dropdown:hover .nav-dropdown-label,
.nav-dropdown:focus-within .nav-dropdown-label {
  color: var(--blue);
}

.nav-dropdown:hover .nav-dropdown-label::after,
.nav-dropdown:focus-within .nav-dropdown-label::after {
  content: "▴";
}

/* El desplegable se abre/cierra con :hover (y :focus-within para
   navegación por teclado) — sin JavaScript. El padding-top actúa de
   puente invisible entre el enlace "Servicios" y la tarjeta, para que
   al bajar el ratón en diagonal no se pierda el :hover por el hueco. */
.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  padding-top: 0.75rem;
  min-width: 190px;
  z-index: 30;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-menu-inner {
  display: flex;
  flex-direction: column;
  min-width: 190px;
  padding: 0.5rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  box-shadow: 0 20px 40px -24px rgba(16, 33, 63, 0.35);
}

.nav-dropdown-menu a {
  padding: 0.6rem 0.75rem;
  border-radius: 0.375rem;
  font-size: 0.9rem;
}

.nav-dropdown-menu a:hover {
  background: var(--light-blue);
}

.hero-kicker {
  max-width: 1120px;
  margin: 2rem auto 0;
  padding: 0 2rem;
  color: var(--blue);
  font-family: "Poppins", Arial, sans-serif;
  font-style: italic;
  font-weight: 600;
  font-size: clamp(1.3rem, 2.1vw, 1.65rem);
  text-align: center;
}

.hero {
  position: relative;
  background-image: url("../images/hero-notas-obra.jpg");
  background-size: cover;
  background-position: center center;
  padding: 5.5rem 2rem;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(16, 33, 63, 0.9),
    rgba(16, 33, 63, 0.75)
  );
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.hero-inner h1 {
  color: var(--white);
}

.hero-slogan {
  margin: 0.75rem 0 1.5rem;
  color: #bfdbfe;
  font-weight: 700;
  font-size: 1.1rem;
}

.hero-inner .hero-text {
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  color: #cbd5e1;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

h1,
h2,
h3 {
  color: var(--navy);
  line-height: 1.15;
}

h1 {
  margin: 0;
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  letter-spacing: -0.04em;
}

.hero-text {
  max-width: 480px;
  margin: 1rem 0 2rem;
  color: var(--muted);
  font-size: 1.2rem;
}

.button {
  display: inline-block;
  padding: 0.85rem 1.25rem;
  border-radius: 0.5rem;
  background: var(--blue);
  color: var(--white);
  font-weight: 700;
  text-decoration: none;
  transition: background 0.2s ease, transform 0.2s ease;
}

.button:hover {
  background: var(--blue-dark);
  transform: translateY(-2px);
}

.section,
.contact {
  max-width: 1120px;
  margin: 0 auto;
  padding: 5rem 2rem;
}

.section h2,
.contact h2 {
  max-width: 720px;
  margin: 0 0 2.5rem;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.03em;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
  margin-top: 2rem;
}

.about-text {
  font-size: 1.1rem;
  color: var(--text);
}

.about-text + .about-text {
  margin-top: 1.25rem;
}

.about-media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0.75rem;
  box-shadow: 0 20px 40px -24px rgba(16, 33, 63, 0.35);
}

.proceso-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 3rem;
  align-items: center;
  margin-top: 2rem;
}

.proceso-copy h2 {
  margin-top: 0;
}

.proceso-media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0.75rem;
  box-shadow: 0 20px 40px -24px rgba(16, 33, 63, 0.35);
}

.services {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.showcase-intro {
  max-width: 680px;
  margin: -1.5rem 0 2.5rem;
  color: var(--muted);
  font-size: 1.1rem;
}

.showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.showcase-item {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.showcase-frame {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  height: 260px;
  padding: 0.6rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--white);
  box-shadow: 0 20px 40px -28px rgba(16, 33, 63, 0.35);
  overflow: hidden;
}

.showcase-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.showcase-item h3 {
  margin: 0;
  font-size: 1.1rem;
}

.showcase-item h3 span {
  color: var(--blue);
}

.showcase-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.card {
  position: relative;
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--white);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -28px rgba(16, 33, 63, 0.35);
  border-color: transparent;
}

.card:hover::before {
  transform: scaleX(1);
}

.card-icon {
  display: block;
  width: 40px;
  height: 40px;
  margin-bottom: 1rem;
  transition: transform 0.25s ease;
}

.card:hover .card-icon {
  transform: translateY(-3px) scale(1.08);
}

.card-icon-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.card-icon-group img {
  display: block;
  width: 32px;
  height: 32px;
  transition: transform 0.25s ease;
}

.card:hover .card-icon-group img:nth-child(1) { transform: translateY(-3px) scale(1.08); }
.card:hover .card-icon-group img:nth-child(2) { transform: translateY(-3px) scale(1.08); transition-delay: 0.04s; }
.card:hover .card-icon-group img:nth-child(3) { transform: translateY(-3px) scale(1.08); transition-delay: 0.08s; }

.card h3 {
  margin-top: 0;
  font-size: 1.25rem;
}

.card p {
  margin-bottom: 0;
  color: var(--muted);
}

.card-link {
  display: inline-block;
  margin-top: 1rem;
  color: var(--blue);
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  transition: transform 0.2s ease;
}

.card-link:hover {
  text-decoration: underline;
  transform: translateX(3px);
}

.steps {
  display: grid;
  gap: 1rem;
  max-width: 760px;
  padding-left: 1.5rem;
  color: var(--text);
  font-size: 1.1rem;
}

.steps li::marker {
  color: var(--blue);
  font-weight: 800;
}

.demo-intro {
  max-width: 640px;
  margin: -1.5rem 0 2.5rem;
  color: var(--muted);
  font-size: 1.1rem;
}

.video-frame {
  position: relative;
  max-width: 380px;
  margin: 0 auto;
  aspect-ratio: 9 / 16;
  border-radius: 0.75rem;
  overflow: hidden;
  background: var(--navy);
  box-shadow: 0 20px 40px -24px rgba(16, 33, 63, 0.35);
}

.video-frame iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-facade {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  cursor: pointer;
  background: var(--navy);
}

.video-facade img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.85;
}

.video-play-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 45px;
  filter: drop-shadow(0 10px 16px rgba(0, 0, 0, 0.45));
  transition: transform 0.2s ease;
}

.video-facade:hover .video-play-icon {
  transform: translate(-50%, -50%) scale(1.08);
}

.video-play-icon svg {
  display: block;
  width: 100%;
  height: 100%;
}

.contact {
  margin-bottom: 5rem;
  border-radius: 1rem;
  background: var(--navy);
}

.contact h2,
.contact p {
  color: var(--white);
}

.contact .eyebrow {
  color: #93c5fd;
}

.contact-intro {
  max-width: 600px;
  margin: -1.25rem 0 2rem;
  color: #cbd5e1;
}

.security-note {
  max-width: 600px;
  margin: -1.25rem 0 2rem;
  color: #93c5fd;
  font-size: 0.9rem;
  font-weight: 600;
}

.contact .button {
  background: var(--white);
  color: var(--navy);
}

.contact .button:hover {
  background: #dbeafe;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.button-secondary {
  background: transparent;
  border: 2px solid var(--blue);
  color: var(--blue);
  padding: calc(0.85rem - 2px) calc(1.25rem - 2px);
}

.button-secondary:hover {
  background: var(--light-blue);
}

.contact .button-secondary {
  background: transparent;
  border-color: var(--white);
  color: var(--white);
}

.contact .button-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.privacy-note {
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: #94a3b8;
}

.privacy-note a {
  color: #cbd5e1;
  text-decoration: underline;
}

.privacy-note a:hover {
  color: var(--white);
}

.footer {
  padding: 2rem;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

.footer a {
  color: var(--muted);
}

.footer a:hover {
  color: var(--blue);
}

.legal {
  max-width: 760px;
}

.service-page h1 {
  max-width: 820px;
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin: 0 0 1.25rem;
}

.service-page .showcase-intro {
  max-width: 780px;
  margin: 0 0 1.5rem;
}

.service-page .about-text {
  max-width: 780px;
}

.legal h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin: 0 0 0.5rem;
}

.legal-updated {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 2rem;
}

.legal-note {
  padding: 1rem 1.25rem;
  background: var(--light-blue);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  color: var(--text);
}

.legal h2 {
  font-size: 1.15rem;
  margin: 2rem 0 0.5rem;
}

.back-link {
  margin-top: 3rem;
}

.back-link a {
  color: var(--blue);
  font-weight: 600;
  text-decoration: none;
}

.back-link a:hover {
  text-decoration: underline;
}

/* Preguntas frecuentes */

.faq-list {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.faq-list details {
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--white);
}

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--navy);
}

.faq-list summary::marker {
  color: var(--blue);
}

.faq-list p {
  margin: 0.75rem 0 0;
  color: var(--text);
}

.faq-list a {
  color: var(--blue);
}

/* Blog */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.blog-card {
  display: block;
  padding: 1.75rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--white);
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.blog-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -28px rgba(16, 33, 63, 0.35);
}

.blog-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  line-height: 1.3;
}

.blog-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.blog-article h2 {
  font-size: 1.3rem;
  margin: 2rem 0 0.5rem;
}

.blog-article p {
  font-size: 1.02rem;
}

@media (max-width: 700px) {
  .header {
    padding: 1rem 1.5rem;
  }

  .nav-toggle-label {
    display: flex;
  }

  .navigation {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: 0.75rem 1.5rem 1.25rem;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 20px 30px -20px rgba(16, 33, 63, 0.35);
  }

  .nav-toggle-checkbox:checked ~ .navigation {
    display: flex;
  }

  .navigation a,
  .nav-dropdown-label {
    width: 100%;
    padding: 0.7rem 0;
    border-bottom: 1px solid var(--border);
  }

  .nav-dropdown {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
  }

  .nav-dropdown-label {
    justify-content: space-between;
  }

  /* En móvil no hay :hover fiable, así que el submenú de Servicios no
     se oculta: queda siempre expandido en el panel, en flujo normal
     en vez de flotar encima (son solo 3 enlaces, no hace falta
     plegarlo). */
  .nav-dropdown-label::after {
    display: none;
  }

  .nav-dropdown-menu {
    display: block;
    position: static;
    padding-top: 0.25rem;
    width: 100%;
  }

  .nav-dropdown-menu-inner {
    border: 0;
    box-shadow: none;
    padding: 0 0 0 1rem;
  }

  .hero {
    padding: 4rem 1.5rem;
    background-position: center 20%;
  }

  .hero-inner {
    text-align: left;
  }

  .hero-inner .hero-text {
    max-width: none;
    margin-left: 0;
  }

  .services,
  .showcase-grid {
    grid-template-columns: 1fr;
  }

  .about-grid,
  .proceso-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .about-media {
    order: -1;
  }

  .section,
  .contact {
    padding: 4rem 1.5rem;
  }

  .contact {
    margin: 0 1rem 4rem;
  }
}
/* Botón flotante de WhatsApp */

.whatsapp-float {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.1rem;
  border-radius: 999px;
  background: var(--blue);
  color: var(--white);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 10px 25px -10px rgba(16, 33, 63, 0.55);
  z-index: 150;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.whatsapp-float.is-hidden {
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
}

.whatsapp-float:hover {
  background: var(--blue-dark);
  color: var(--white);
}

.whatsapp-float svg {
  width: 1.2rem;
  height: 1.2rem;
}

/* Fondo con transición de imágenes, muy atenuado, detrás de una sección.
   Mismo patrón que en SVC Construction: las imágenes son ilustrativas
   (generadas con IA para dar ambiente), no capturas reales — por eso van
   casi tapadas por el velo de color, solo como textura de fondo. */

.section-bg-fade {
  position: relative;
  overflow: hidden;
}

.section-bg-fade > .bg-photos {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.section-bg-fade > .bg-photos img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  animation: bg-fade-cycle 18s infinite;
}

.section-bg-fade > .bg-photos img:nth-child(1) { animation-delay: 0s; }
.section-bg-fade > .bg-photos img:nth-child(2) { animation-delay: 6s; }
.section-bg-fade > .bg-photos img:nth-child(3) { animation-delay: 12s; }

.section-bg-fade > .bg-veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(248, 250, 252, 0.82);
}

.section-bg-fade > .section {
  position: relative;
  z-index: 2;
}

@keyframes bg-fade-cycle {
  0%, 5% { opacity: 0; }
  11%, 28% { opacity: 1; }
  34%, 100% { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .section-bg-fade > .bg-photos img {
    animation: none;
    opacity: 0;
  }
  .section-bg-fade > .bg-photos img:first-child {
    opacity: 1;
  }
}