/* ==================== VARIABLES Y RESET ==================== */
:root {
  --primary-color: #1a56db;
  --primary-hover: #1240a8;
  --secondary-color: #0d2342;
  --text-color: #4a5568;
  --bg-light: #f7fafc;
  --border-color: #e2e8f0;
  --accent-light: #90cdf4;
  --white: #ffffff;
  --font-main: "Inter", sans-serif;
}

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

body {
  font-family: var(--font-main);
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 1100;
  padding: 10px 16px;
  background-color: var(--secondary-color);
  color: var(--white);
  text-decoration: none;
  font-weight: 700;
  transition: top 0.2s ease;
}

.skip-link:focus-visible {
  top: 16px;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--primary-color);
  outline-offset: 3px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ==================== BOTONES ==================== */
.btn {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition:
    background-color 0.3s ease,
    border-color 0.3s ease,
    color 0.3s ease,
    transform 0.3s ease;
  cursor: pointer;
  border: none;
  text-align: center;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--white);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}

.btn-secondary:hover {
  background-color: var(--white);
  color: var(--secondary-color);
}

.btn-whatsapp {
  background-color: #25d366;
  color: white;
  border: 2px solid #25d366;
}

.btn-whatsapp:hover {
  background-color: #20ba5a;
  border-color: #20ba5a;
  color: white;
}

/* ==================== HEADER ==================== */
.main-header {
  padding: 15px 0;
  border-bottom: 1px solid transparent;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: transparent;
  transition:
    background-color 0.3s ease,
    border-color 0.3s ease,
    box-shadow 0.3s ease;
}

.main-header.is-scrolled,
.main-header.menu-open {
  background-color: rgba(255, 255, 255, 0.97);
  border-bottom-color: var(--border-color);
  box-shadow: 0 8px 24px rgba(13, 35, 66, 0.08);
  backdrop-filter: blur(10px);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  position: relative;
}

.logo-img {
  height: 56px;
  width: auto;
  display: block;
  transform: scale(1.35);
  transition: transform 0.3s ease;
}

.logo-img-light {
  display: none;
}

.main-header:not(.is-scrolled):not(.menu-open) .logo-img-default {
  display: none;
}

.main-header:not(.is-scrolled):not(.menu-open) .logo-img-light {
  display: block;
}

.logo-img:hover {
  transform: scale(1.6);
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
}

.main-nav a {
  text-decoration: none;
  color: var(--secondary-color);
  font-size: 14px;
  font-weight: 600;
  transition: color 0.3s ease;
}

.main-nav a:hover {
  color: var(--primary-color);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  width: 40px;
  height: 40px;
  position: relative;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--secondary-color);
  margin: 5px auto;
  transition:
    background-color 0.3s ease,
    opacity 0.3s ease,
    transform 0.3s ease;
  border-radius: 1px;
}

.menu-toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (min-width: 901px) {
  .main-header:not(.is-scrolled) .main-nav a {
    color: var(--white);
  }
}

.main-header:not(.is-scrolled):not(.menu-open) .menu-toggle span {
  background-color: var(--white);
}

section[id],
footer[id] {
  scroll-margin-top: 90px;
}

/* ==================== HERO ==================== */
.hero {
  background-image:
    linear-gradient(
      90deg,
      rgba(7, 21, 39, 0.94) 0%,
      rgba(13, 35, 66, 0.76) 52%,
      rgba(13, 35, 66, 0.42) 100%
    ),
    url("img/psb-3.webp");
  background-size: cover;
  background-position: center;
  min-height: 100svh;
  display: flex;
  align-items: center;
  color: var(--white);
  padding: 170px 0 120px;
  text-align: left;
}

.hero-content {
  max-width: 800px;
}

.hero-subtitle {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--accent-light);
  display: block;
  margin-bottom: 20px;
  padding-left: 14px;
  border-left: 3px solid var(--primary-color);
}

.hero-title {
  font-size: 48px;
  line-height: 1.1;
  margin-bottom: 24px;
  text-transform: uppercase;
  text-wrap: balance;
}

.hero-description {
  font-size: 18px;
  margin-bottom: 40px;
  color: #e2e8f0;
  max-width: 600px;
}

.hero-buttons {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.hero-buttons .btn-secondary,
.hero-buttons .btn-whatsapp {
  padding: 9px 18px;
  font-size: 13px;
}

.hero-buttons .btn-secondary {
  background-color: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.65);
}

.hero-buttons .btn-secondary:hover {
  background-color: var(--white);
}

.hero-buttons .btn-whatsapp {
  background-color: rgba(37, 211, 102, 0.12);
  border-color: rgba(121, 239, 158, 0.7);
  color: #b9ffd0;
}

.hero-buttons .btn-whatsapp:hover {
  background-color: #25d366;
  border-color: #25d366;
  color: var(--white);
}

/* ==================== SERVICIOS ==================== */
.seccion-servicios {
  background-color: var(--bg-light);
  padding: 100px 0;
}

.titulo-seccion {
  font-size: 36px;
  color: var(--secondary-color);
  margin-bottom: 38px;
  text-transform: uppercase;
}

.lista-servicios {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 48px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.servicio-item {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 78px;
  padding: 18px 20px 18px 0;
  border-bottom: 1px solid var(--border-color);
  position: relative;
  transition:
    background-color 0.3s ease,
    padding 0.3s ease,
    transform 0.3s ease;
}

.servicio-item::before {
  content: "";
  width: 8px;
  height: 8px;
  flex: 0 0 8px;
  border: 2px solid var(--primary-color);
  border-radius: 50%;
  transition:
    background-color 0.3s ease,
    transform 0.3s ease;
}

.servicio-item::after {
  content: "->";
  color: var(--primary-color);
  font-size: 18px;
  line-height: 1;
  opacity: 0;
  transform: translateX(-8px);
  transition:
    opacity 0.3s ease,
    transform 0.3s ease;
}

.servicio-item:hover {
  background-color: rgba(255, 255, 255, 0.72);
  padding-left: 14px;
  padding-right: 14px;
  transform: translateX(4px);
}

.servicio-item:hover::before {
  background-color: var(--primary-color);
  transform: scale(1.2);
}

.servicio-item:hover::after {
  opacity: 1;
  transform: translateX(0);
}

.servicio-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--secondary-color);
  margin: 0;
  flex: 1;
  transition: color 0.3s ease;
}

.servicio-item:hover h3 {
  color: var(--primary-color);
}

/* ==================== EMPRESAS (carrusel) ==================== */
.seccion-empresas {
  background-color: var(--white);
  padding: 30px 0;
  overflow: hidden;
}

.carrusel-empresas {
  width: 100%;
  overflow: hidden;
  mask-image: linear-gradient(
    to right,
    transparent,
    black 8%,
    black 92%,
    transparent
  );
  -webkit-mask-image: linear-gradient(
    to right,
    transparent,
    black 8%,
    black 92%,
    transparent
  );
}

.carrusel-track {
  display: flex;
  gap: 48px;
  width: max-content;
  animation: scroll 35s linear infinite;
}

.carrusel-track:hover {
  animation-play-state: paused;
}

.empresa-logo {
  flex-shrink: 0;
  width: 180px;
  height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-light);
  border-radius: 8px;
  padding: 10px 16px;
}

.empresa-logo img {
  max-width: 100%;
  max-height: 70px;
  width: auto;
  height: auto;
  object-fit: contain;
  transition: transform 0.3s ease;
}

.empresa-logo:hover img {
  transform: scale(1.05);
}

@keyframes scroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* ==================== PORTFOLIO ==================== */
.seccion-portfolio {
  background-color: var(--white);
  padding: 80px 0;
}

.cabecera-portfolio {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 36px;
}

.titulos-portfolio .titulo-seccion {
  margin-bottom: 0;
}

.enlace-proyecto {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: color 0.3s ease;
}

.enlace-proyecto:hover {
  color: var(--secondary-color);
}

.portfolio-gallery {
  max-width: 1080px;
  margin: 0 auto;
}

.portfolio-stage {
  display: block;
}

.portfolio-slides {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: 220px;
  gap: 18px;
}

.portfolio-featured,
.portfolio-masonry {
  display: contents;
}

.portfolio-slide {
  display: block;
  min-height: 220px;
  overflow: hidden;
  position: relative;
  background-color: var(--secondary-color);
}

.portfolio-slide-featured {
  grid-column: span 8;
  grid-row: span 2;
}

.portfolio-slide-tall {
  grid-column: span 4;
  grid-row: span 2;
}

.portfolio-slide-small {
  grid-column: span 4;
}

@media (min-width: 901px) {
  .portfolio-masonry .portfolio-slide:nth-child(1) {
    grid-column: span 5;
  }

  .portfolio-masonry .portfolio-slide:nth-child(2) {
    grid-column: span 3;
  }

  .portfolio-masonry .portfolio-slide:nth-child(3) {
    grid-column: span 4;
  }

  .portfolio-masonry .portfolio-slide:nth-child(4) {
    grid-column: span 4;
  }

  .portfolio-masonry .portfolio-slide:nth-child(5) {
    grid-column: span 5;
  }

  .portfolio-masonry .portfolio-slide:nth-child(6) {
    grid-column: span 3;
  }
}

.portfolio-image-frame {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--secondary-color);
}

.portfolio-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.portfolio-slide::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, transparent 42%, rgba(7, 21, 39, 0.86));
  pointer-events: none;
}

.portfolio-slide:hover .portfolio-image-frame img {
  transform: scale(1.06);
}

.portfolio-slide-meta {
  position: absolute;
  left: 22px;
  right: 18px;
  bottom: 18px;
  z-index: 2;
}

.portfolio-slide-meta h3 {
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  margin: 0;
  letter-spacing: 0.4px;
}

/* ==================== NOSOTROS ==================== */
.seccion-nosotros {
  background-color: var(--bg-light);
  padding: 100px 0;
}

.contenedor-nosotros {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.nosotros-texto .titulo-seccion {
  margin-bottom: 34px;
  line-height: 1.2;
}

.texto-nosotros p {
  font-size: 16px;
  line-height: 1.55;
  color: var(--text-color);
  margin-bottom: 14px;
}

.texto-nosotros p:first-child {
  color: var(--secondary-color);
  font-size: 19px;
  line-height: 1.45;
  border-left: 3px solid var(--primary-color);
  padding-left: 18px;
}

.texto-nosotros p:last-of-type {
  margin-bottom: 32px;
}

.texto-nosotros strong {
  color: var(--secondary-color);
}

.nosotros-imagen img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  display: block;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 1;
}

.nosotros-imagen {
  position: relative;
  padding: 0 0 18px 18px;
}

.nosotros-imagen::before {
  content: "";
  position: absolute;
  inset: 18px 0 0 0;
  background-color: var(--primary-color);
  opacity: 0.18;
}

/* ==================== FOOTER ==================== */
.pie-pagina {
  background-color: #0a1a30;
  color: #a0aec0;
  padding: 60px 0 0;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.3fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-titulo {
  color: var(--white);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-texto {
  line-height: 1.6;
  margin-bottom: 20px;
  max-width: 280px;
}

.footer-linkedin,
.footer-social-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  color: #a0aec0;
  transition:
    background-color 0.3s ease,
    color 0.3s ease,
    transform 0.3s ease;
}

.footer-linkedin:hover,
.footer-social-btn:hover {
  background-color: #0a66c2;
  color: white;
}

.footer-social-btn.whatsapp:hover {
  background-color: #25d366;
  color: white;
}

.footer-contacto {
  list-style: none;
}

.footer-contacto li {
  margin-bottom: 16px;
  line-height: 1.5;
}

.footer-contacto strong {
  color: #e2e8f0;
  font-size: 13px;
}

.footer-contacto a {
  color: #a0aec0;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-contacto a:hover {
  color: var(--accent-light);
}

.mapa-container {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #1a365d;
}

.mapa-container iframe {
  display: block;
  width: 100%;
}

.footer-bottom {
  border-top: 1px solid #1a365d;
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 900px) {
  .menu-toggle {
    display: block;
  }
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--white);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.06);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }
  .main-nav.is-open {
    max-height: 320px;
  }
  .main-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 10px 20px 20px;
  }
  .main-nav a {
    display: block;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-color);
  }
  .main-nav li:last-child a {
    border-bottom: none;
  }
  .header-cta {
    display: none;
  }
  .lista-servicios {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .portfolio-slides {
    display: block;
  }
  .portfolio-featured {
    display: block;
    margin-bottom: 18px;
  }
  .portfolio-featured .portfolio-slide {
    margin-bottom: 18px;
  }
  .portfolio-masonry {
    display: block;
    column-count: 2;
    column-gap: 18px;
  }
  .portfolio-slide {
    display: block;
    min-height: 0;
    overflow: visible;
    background-color: transparent;
    break-inside: avoid;
  }
  .portfolio-featured .portfolio-slide,
  .portfolio-masonry .portfolio-slide {
    grid-column: auto;
    grid-row: auto;
  }
  .portfolio-masonry .portfolio-slide {
    margin-bottom: 18px;
  }
  .portfolio-slide::before {
    display: none;
  }
  .portfolio-image-frame {
    height: auto;
    background-color: transparent;
    border: 0;
  }
  .portfolio-image-frame img {
    width: 100%;
    height: auto;
    object-fit: initial;
  }
  .portfolio-featured .portfolio-slide-tall .portfolio-image-frame {
    height: clamp(320px, 48vw, 460px);
  }
  .portfolio-featured .portfolio-slide-tall .portfolio-image-frame img {
    height: 100%;
    object-fit: cover;
    object-position: center;
  }
  .portfolio-slide-meta {
    position: static;
    display: flex;
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
    padding-top: 14px;
  }
  .portfolio-slide-meta h3 {
    color: var(--secondary-color);
    font-size: 14px;
    line-height: 1.3;
  }
  .cabecera-portfolio {
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
  }
  .contenedor-nosotros {
    grid-template-columns: 1fr;
    gap: 35px;
  }

  .nosotros-imagen {
    text-align: center;
  }

  .nosotros-imagen img {
    max-width: 85%;
    margin: 0 auto;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-mapa {
    grid-column: 1 / -1;
  }
}

@media (max-width: 600px) {
  .container {
    padding: 0 16px;
  }
  .hero {
    padding: 130px 0 80px;
  }
  .hero-title {
    font-size: 30px;
  }
  .hero-description {
    font-size: 16px;
  }
  .titulo-seccion {
    font-size: 26px;
    margin-bottom: 36px;
  }
  .portfolio-stage {
    display: block;
  }
  .portfolio-slides {
    display: block;
  }
  .portfolio-featured {
    display: block;
    margin-bottom: 12px;
  }
  .portfolio-featured .portfolio-slide {
    margin-bottom: 12px;
  }
  .portfolio-featured .portfolio-slide-tall {
    width: 100%;
  }
  .portfolio-masonry {
    display: block;
    column-count: 2;
    column-gap: 12px;
  }
  .portfolio-slide {
    display: block;
    min-height: 0;
    overflow: visible;
    background-color: transparent;
    break-inside: avoid;
  }
  .portfolio-featured .portfolio-slide,
  .portfolio-masonry .portfolio-slide {
    grid-column: auto;
    grid-row: auto;
  }
  .portfolio-masonry .portfolio-slide {
    margin-bottom: 12px;
  }
  .portfolio-slide::before {
    display: none;
  }
  .portfolio-image-frame {
    height: auto;
    background-color: transparent;
    border: 0;
  }
  .portfolio-image-frame img {
    width: 100%;
    height: auto;
    object-fit: initial;
  }
  .portfolio-featured .portfolio-slide-tall .portfolio-image-frame {
    height: auto;
  }
  .portfolio-featured .portfolio-slide-tall .portfolio-image-frame img {
    height: auto;
    object-fit: initial;
  }
  .portfolio-slide-meta {
    position: static;
    display: flex;
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
    padding-top: 14px;
  }
  .portfolio-slide-meta h3 {
    color: var(--secondary-color);
    font-size: 13px;
    line-height: 1.25;
  }
  .hero-buttons {
    flex-direction: column;
    align-items: flex-start;
  }
  .hero-buttons .btn {
    width: auto;
  }
  .seccion-servicios,
  .seccion-empresas,
  .seccion-portfolio {
    padding: 60px 0;
  }
  .seccion-nosotros {
    padding: 70px 0;
  }
  .empresa-logo {
    width: 140px;
    height: 70px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .pie-pagina {
    padding: 50px 0 0;
  }
  .contenedor-nosotros {
    gap: 25px;
  }

  .nosotros-imagen img {
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .carrusel-track {
    animation: none;
  }
}