:root {
  --color-primary: #0c86e2;
  --color-secondary: #0b3a68;
  --color-accent: #5f7084;
  --color-bg-light: #f6f8ff;
  --color-bg-soft: #eef3fb;
  --color-card: #ffffff;
  --color-text-dark: #1c1f2a;
  --color-text-muted: #5d6471;
  --shadow-soft: 0 10px 35px rgba(10, 78, 126, 0.12);
  --shadow-medium: 0 18px 38px rgba(9, 52, 92, 0.2);
  --transition: 0.28s ease;
}

body.dark-mode {
  --color-primary: #43b5ff;
  --color-secondary: #a8cbff;
  --color-accent: #9ea9bb;
  --color-bg-light: #0d1117;
  --color-bg-soft: #111723;
  --color-card: #161d2b;
  --color-text-dark: #e9eef7;
  --color-text-muted: #9fb0c8;
  --shadow-soft: 0 10px 35px rgba(0, 0, 0, 0.3);
  --shadow-medium: 0 18px 38px rgba(0, 0, 0, 0.45);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
}

body {
  font-family: "Open Sans", sans-serif;
  background-color: var(--color-bg-light);
  color: var(--color-text-dark);
  line-height: 1.7;
  transition: background-color var(--transition), color var(--transition);
  position: relative;
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: -10% auto auto -10%;
  width: 55vw;
  height: 55vw;
  background: radial-gradient(circle at 30% 30%, rgba(12, 134, 226, 0.26), transparent 60%);
  filter: blur(60px);
  z-index: 0;
  pointer-events: none;
}

body::after {
  inset: auto -15% -15% auto;
  background: radial-gradient(circle at 70% 70%, rgba(11, 58, 104, 0.24), transparent 60%);
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.75rem;
  position: relative;
  z-index: 1;
}

h1,
h2,
h3,
h4 {
  font-family: "Montserrat", sans-serif;
  color: var(--color-secondary);
  letter-spacing: -0.01em;
}

body.dark-mode h1,
body.dark-mode h2,
body.dark-mode h3,
body.dark-mode h4 {
  color: var(--color-primary);
}

h2 {
  font-size: clamp(2rem, 5vw, 2.8rem);
  text-align: center;
  margin-bottom: 1rem;
}

.section-subtitle {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3rem auto;
  font-size: 1.05rem;
  color: var(--color-text-muted);
}

.section {
  padding: 5rem 0;
  position: relative;
}

.section-light {
  background: var(--color-bg-soft);
  backdrop-filter: blur(4px);
}

.cta {
  display: inline-block;
  padding: 1rem 2.6rem;
  background: linear-gradient(120deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  font-weight: 700;
  border-radius: 50px;
  text-decoration: none;
  box-shadow: 0 14px 28px rgba(12, 134, 226, 0.38);
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

.cta:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 16px 34px rgba(12, 134, 226, 0.45);
  filter: brightness(1.02);
}

.ghost-link {
  display: inline-block;
  padding: 1rem 2.2rem;
  border-radius: 50px;
  border: none;
  background: linear-gradient(120deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  box-shadow: 0 12px 24px rgba(12, 134, 226, 0.32);
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

.ghost-link:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 16px 30px rgba(12, 134, 226, 0.4);
  filter: brightness(1.02);
}

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

header {
  position: sticky;
  top: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(12, 134, 226, 0.12);
  padding: 0.8rem 0;
  z-index: 2000;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.06);
}

body.dark-mode header {
  background-color: rgba(13, 17, 23, 0.82);
  border-bottom-color: rgba(67, 181, 255, 0.2);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo img {
  height: 50px;
  width: auto;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

nav a {
  text-decoration: none;
  color: var(--color-text-dark);
  font-weight: 600;
  padding: 0.5rem 0;
  position: relative;
  transition: color var(--transition);
}

nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  transition: width var(--transition);
}

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

nav a:hover::after,
nav a:focus::after {
  width: 100%;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.language-select-wrapper {
  position: relative;
  display: inline-block;
}

#language-selector {
  appearance: none;
  background-color: var(--color-card);
  border: 1px solid rgba(12, 134, 226, 0.2);
  border-radius: 18px;
  padding: 0.45rem 2rem 0.45rem 0.9rem;
  font-size: 0.92rem;
  color: var(--color-text-dark);
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition);
}

body.dark-mode #language-selector {
  background-color: var(--color-bg-soft);
}

#language-selector:hover {
  border-color: var(--color-primary);
  box-shadow: 0 10px 24px rgba(12, 134, 226, 0.2);
}

.language-select-wrapper::after {
  content: "▾";
  font-size: 0.75rem;
  color: var(--color-accent);
  position: absolute;
  right: 0.8rem;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}

.toggle-icon {
  background: var(--color-card);
  border: 1px solid rgba(12, 134, 226, 0.2);
  cursor: pointer;
  font-size: 1rem;
  height: 42px;
  width: 72px;
  border-radius: 22px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  align-items: center;
  justify-items: center;
  transition: background-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.toggle-icon:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(12, 134, 226, 0.18);
}

.icon-sun {
  color: #ffb703;
}

.icon-moon {
  color: var(--color-primary);
}

.frosted {
  border-radius: 0 0 18px 18px;
}

.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 82vh;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-background {
  position: relative;
  background:
    radial-gradient(120% 90% at 20% 20%, rgba(12, 134, 226, 0.2), transparent),
    radial-gradient(140% 110% at 80% 0%, rgba(11, 58, 104, 0.2), transparent),
    url("images/fondo1.jpg") center center/cover no-repeat;
  color: #fff;
}

.hero-background::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(8, 28, 56, 0.7), rgba(8, 38, 72, 0.62));
  z-index: 1;
}

.hero-background::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 18px;
  background: linear-gradient(
    90deg,
    rgba(4, 132, 70, 0.16),
    rgba(255, 255, 255, 0.25),
    rgba(200, 24, 24, 0.16)
  );
  filter: blur(0.4px);
  z-index: 1;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  color: #f6f9ff;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.42);
}

.hero p {
  color: #d9e6ff;
  font-size: 1.18rem;
  max-width: 740px;
  margin: 1.5rem auto 2.2rem auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  color: #f6f9ff;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.9rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}

.about-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3.5rem;
  align-items: center;
}

.about-content h2 {
  text-align: left;
}

.about-content p {
  font-size: 1.05rem;
  color: var(--color-text-muted);
}

.about-gif {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  filter: drop-shadow(0 18px 40px rgba(10, 78, 126, 0.18));
}

.about-gif img {
  max-width: 100%;
  height: auto;
  border-radius: 14px;
}

body.dark-mode .about-gif img {
  mix-blend-mode: screen;
}

.bullet-list {
  list-style: none;
  max-width: 820px;
  margin: 2rem auto;
}

.bullet-list li {
  margin-bottom: 1.1rem;
  padding: 1rem 1.1rem 1rem 1.6rem;
  position: relative;
  background: var(--color-card);
  border-radius: 10px;
  box-shadow: var(--shadow-soft);
  border-left: 4px solid var(--color-primary);
  color: var(--color-text-muted);
}

.bullet-list li::before {
  content: "•";
  color: var(--color-primary);
  position: absolute;
  left: 10px;
  top: 1rem;
  font-weight: 900;
}

.service-accordion {
  max-width: 960px;
  margin: 3rem auto 0;
}

.accordion-item {
  position: relative;
  background-color: var(--color-card);
  border: 1px solid rgba(12, 134, 226, 0.08);
  border-radius: 12px;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.service-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 10px;
}

.accordion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  cursor: pointer;
  gap: 1rem;
}

.accordion-header h3 {
  margin: 0;
  font-size: 1.2rem;
  color: var(--color-secondary);
}

.accordion-icon {
  font-size: 2rem;
  font-weight: 300;
  color: var(--color-primary);
  transition: transform var(--transition);
}

.accordion-item.active .accordion-icon {
  transform: rotate(45deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease-out;
}

.accordion-item.active {
  border-color: rgba(12, 134, 226, 0.2);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.accordion-content-inner {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 1.6rem;
  align-items: stretch;
  padding: 0 1.5rem 1.5rem;
}

.accordion-content-inner p {
  margin-bottom: 1rem;
  color: var(--color-text-muted);
}

.accordion-content-inner p:first-of-type {
  color: var(--color-text-dark);
}

.accordion-content-inner ul {
  list-style-position: inside;
  padding-left: 0.5rem;
  color: var(--color-text-muted);
}

.accordion-content-inner li {
  margin-bottom: 0.45rem;
}

.service-text-container {
  padding: 0.8rem 0;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.9rem;
  margin-top: 3rem;
}

.team-card {
  background-color: var(--color-card);
  text-align: center;
  padding: 2.3rem 1.5rem;
  border-radius: 16px;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  border: 1px solid rgba(12, 134, 226, 0.08);
}

.team-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-medium);
  border-color: rgba(12, 134, 226, 0.2);
}

.team-card img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 1.4rem;
  border: 4px solid var(--color-bg-soft);
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.1);
}

body.dark-mode .team-card img {
  border-color: var(--color-bg-light);
}

.team-card h3 {
  color: var(--color-secondary);
  margin-bottom: 0.25rem;
  font-size: 1.2rem;
}

#team .team-grid {
  grid-template-columns: repeat(3, minmax(240px, 1fr));
}

.team-card .team-title {
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: 0.75rem;
  display: block;
}

.team-card .team-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.recruitment-card {
  text-align: left;
  padding-top: 2rem;
}

.recruitment-card h3 {
  text-align: left;
}

.recruitment-card .team-desc {
  margin-top: 0.35rem;
}

.icon-blob {
  width: 72px;
  height: 72px;
  border-radius: 24px;
  display: grid;
  place-items: center;
  color: #0b3a68;
  background: radial-gradient(circle at 30% 30%, rgba(12, 134, 226, 0.32), rgba(12, 134, 226, 0.12));
  box-shadow: 0 10px 24px rgba(12, 134, 226, 0.2);
  margin-bottom: 1rem;
}

.icon-blob svg {
  width: 44px;
  height: 44px;
}

.icon-transport {
  background: radial-gradient(circle at 20% 20%, rgba(12, 134, 226, 0.36), rgba(12, 134, 226, 0.18));
}

.icon-construction {
  background: radial-gradient(circle at 80% 30%, rgba(13, 58, 104, 0.34), rgba(12, 134, 226, 0.16));
}

.icon-production {
  background: radial-gradient(circle at 20% 70%, rgba(14, 140, 210, 0.36), rgba(12, 134, 226, 0.16));
}

.location-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 3rem;
}

.location-card {
  background-color: var(--color-card);
  padding: 2rem;
  border-radius: 14px;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(12, 134, 226, 0.12);
}

.location-card h3 {
  text-align: left;
}

.location-card address {
  font-style: normal;
  margin: 1rem 0;
  line-height: 1.8;
  color: var(--color-text-muted);
}

.location-card a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 700;
}

.location-card iframe {
  border-radius: 12px;
  margin-top: 1rem;
  width: 100%;
  border: 0;
  box-shadow: var(--shadow-soft);
}

.plans-cta {
  margin-top: 2rem;
  text-align: center;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr;
  gap: 2.5rem;
  align-items: stretch;
  margin-top: 2.5rem;
}

.contact-form-wrapper {
  background: var(--color-card);
  padding: 2rem;
  border-radius: 14px;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(12, 134, 226, 0.12);
}

.contact-form-wrapper form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-form-wrapper label {
  font-weight: 700;
  color: var(--color-secondary);
  font-size: 0.92rem;
}

.contact-form-wrapper input,
.contact-form-wrapper textarea,
.contact-form-wrapper select {
  width: 100%;
  padding: 0.95rem 1rem;
  border: 1px solid rgba(12, 134, 226, 0.18);
  border-radius: 10px;
  font-size: 1rem;
  background-color: var(--color-bg-soft);
  color: var(--color-text-dark);
  transition: border-color var(--transition), box-shadow var(--transition), background-color var(--transition);
}

body.dark-mode .contact-form-wrapper input,
body.dark-mode .contact-form-wrapper textarea,
body.dark-mode .contact-form-wrapper select {
  background-color: var(--color-bg-soft);
}

.contact-form-wrapper input:focus,
.contact-form-wrapper textarea:focus,
.contact-form-wrapper select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(12, 134, 226, 0.15);
}

.contact-form-wrapper select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--color-primary) 50%), linear-gradient(135deg, var(--color-primary) 50%, transparent 50%);
  background-position: calc(100% - 24px) calc(50% - 2px), calc(100% - 18px) calc(50% - 2px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

.contact-form-wrapper button {
  padding: 1rem;
  border: none;
  border-radius: 10px;
  background: linear-gradient(120deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 12px 26px rgba(12, 134, 226, 0.26);
}

.contact-form-wrapper button:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 34px rgba(12, 134, 226, 0.32);
}

.contact-ai-wrapper {
  display: grid;
  align-items: stretch;
}

.ai-prompt-box {
  background: linear-gradient(145deg, rgba(12, 134, 226, 0.08), rgba(11, 58, 104, 0.12)), var(--color-card);
  padding: 2rem;
  border-radius: 14px;
  text-align: center;
  border: 1px dashed rgba(12, 134, 226, 0.3);
  box-shadow: var(--shadow-soft);
  color: var(--color-text-dark);
}

.ai-prompt-box h3 {
  margin-bottom: 0.75rem;
}

.ai-icon {
  font-size: 3rem;
  margin-top: 1rem;
}

footer {
  text-align: center;
  padding: 2rem 1rem;
  margin-top: 4rem;
  border-top: 1px solid rgba(12, 134, 226, 0.12);
}

body.dark-mode footer {
  border-top-color: rgba(67, 181, 255, 0.2);
}

.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  background-color: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: var(--shadow-medium);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 1999;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Hide back-to-top button */
.back-to-top,
.back-to-top.show {
  display: none !important;
  visibility: hidden !important;
  opacity: 0 !important;
  pointer-events: none;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

nav a.active-link {
  color: var(--color-primary);
}

nav a.active-link::after {
  width: 100%;
}

@media (max-width: 1100px) {
  .about-layout {
    grid-template-columns: 1fr;
    gap: 2.4rem;
  }

  .about-content h2 {
    text-align: center;
  }

  .hero {
    min-height: 72vh;
  }
}

@media (max-width: 992px) {
  header .container {
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }

  nav {
    order: 3;
    width: 100%;
  }

  nav ul {
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
  }

  .header-controls {
    order: 2;
  }

  .location-grid,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .accordion-content-inner {
    grid-template-columns: 1fr;
    gap: 0.8rem;
  }

  .team-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }

  .hero h1 {
    font-size: clamp(2.2rem, 8vw, 3rem);
  }

  .hero p {
    font-size: 1.05rem;
  }
}