@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800&display=swap');

:root {
  --electric-blue: #007ac1;
  --black: #000000;
  --white: #ffffff;
  --text-gray: #6c757d;
}

/* ====== GLOBAL TYPOGRAPHY ====== */

html {
  font-size: 16px;
  box-sizing: border-box;
  scroll-behavior: smooth;
}
*, *::before, *::after {
  box-sizing: inherit;
}
body, html {
  margin: 0;
  padding: 0;
  background-color: var(--white);
  color: var(--black);
  font-family: 'Inter', Arial, sans-serif;
  line-height: 1.6;
}

/* ====== HEADER & NAVBAR ====== */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 0.75rem 2rem;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(10px);
  /*border-bottom: 1px solid rgba(255, 255, 255, 0.05);*/
  /*box-shadow: 0 1px 8px rgba(0, 0, 0, 0.1);*/
  transition: all 0.4s ease;
}

header.scrolled {
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: none;
  padding: 0.75rem 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  /*border-bottom: 1px solid rgba(255, 255, 255, 0.15);*/
}

/* === LOGO DYNAMIC CHANGE & ANIMATION === */
.logo-container {
  position: relative;
  height: 50px;
  width: auto;
  display: flex;
  align-items: center;
}

.logo {
  height: 50px;
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.35s ease, transform 0.35s ease;
  pointer-events: none;
}

header:not(.scrolled) .logo-dark {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}

header.scrolled .logo-light {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}

.nav-link {
  color: var(--black);
  font-weight: 600;
  text-transform: uppercase;
  margin: 0 0.75rem;
  letter-spacing: 0.5px;
  font-size: 0.95rem;
  transition: color 0.3s ease, font-size 0.3s ease;
  text-decoration: none;
}

.nav-link-footer {
  color: var(--white);
  font-weight: 600;
  text-transform: uppercase;
  margin: 0 0.75rem;
  letter-spacing: 0.5px;
  font-size: 0.95rem;
  transition: color 0.3s ease, font-size 0.3s ease;
  text-decoration: none;
}

header.scrolled .nav-link {
  font-size: 0.9rem;
  color: var(--white);
}

.nav-link:hover,
.nav-link:focus {
  color: var(--electric-blue);
}

/* ====== CTA BUTTONS ====== */
.btn-start,
.btn-contact {
  transition: transform 0.35s ease-in-out, background 0.3s ease;
  transform: scale(1);
}

header.scrolled .btn-start,
header.scrolled .btn-contact {
  transform: scale(1.03);
}

.btn-start {
  border: 2px solid var(--white);
  color: var(--white);
  background: transparent;
  font-weight: 600;
  padding: 0.5rem 1.25rem;
  margin-right: 0.75rem;
}

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

.btn-contact {
  border: 2px solid var(--electric-blue);
  color: var(--electric-blue);
  background: transparent;
  font-weight: 600;
  padding: 0.5rem 1.25rem;
}

.btn-contact:hover {
  background: var(--electric-blue);
  color: var(--white);
}

/* ====== CAROUSEL ====== */
.carousel-item {
  position: relative;
  background-size: cover;
  background-position: center;
  height: 100vh;
  filter: brightness(1);
  background-repeat: no-repeat;
  transition: background-image 0.3s ease-in-out;
}

.overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 1;
}

.carousel-caption {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  background: rgba(0, 0, 0, 0.6);
  padding: 1.2rem 2rem;
  border-radius: 10px;
  max-width: 90%;
  width: fit-content;
  height: fit-content;
  backdrop-filter: blur(6px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
  text-align: center;
}

.carousel-caption h1 {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--electric-blue);
  margin-bottom: 0.6rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.6);
}

.carousel-caption p {
  font-size: 1.15rem;
  color: var(--white);
  margin-bottom: 1rem;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

.carousel-control-prev:focus,
.carousel-control-next:focus {
  outline: 3px solid var(--electric-blue);
  outline-offset: 2px;
}

@keyframes fadeInUp {
  from {
    transform: translate(-50%, -40%);
    opacity: 0;
  }
  to {
    transform: translate(-50%, -50%);
    opacity: 1;
  }
}

.btn-hero {
  background-color: var(--electric-blue);
  color: var(--white);
  font-weight: 600;
  padding: 0.75rem 2rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 1rem;
  border: none;
  transition: background 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.btn-hero:hover {
  background-color: #0064a0;
}

/* ====== UTILITY CLASSES ====== */
hr {
  border-color: var(--electric-blue);
  opacity: 0.4;
}

a {
  color: var(--electric-blue);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: #005b8c;
  text-decoration: underline;
}

/* ====== SECTIONS STRUCTURE ====== */
section h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--electric-blue);
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

section p.lead {
  max-width: 700px;
  margin: auto;
}

.card img {
  border-radius: 6px;
}
.grayscale {
  filter: grayscale(0.6);
}
.grayscale:hover {
  filter: grayscale(0);
  transition: filter 0.3s ease;
}

/* ====== FORMS ====== */
form .form-control {
  transition: background 0.3s ease, border-color 0.3s ease;
}
form .form-control:focus {
  background: var(--white);
  border-color: var(--electric-blue);
  box-shadow: none;
}

/* ====== BACKGROUND & SPACING ====== */
.bg-light {
  background-color: #f8f9fa !important;
}

.section-divider {
  height: 40px;
  background-color: #f1f1f1;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
}

/* ====== CARDS IMAGES ====== */
.card img {
  filter: grayscale(0.2);
  transition: transform 0.3s ease;
}
.card img:hover {
  transform: scale(1.1);
}

/* ====== FLIP-CARD ====== */
.flip-card {
  background: transparent;
  perspective: 1000px;
  height: 320px;
  position: relative;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.8s ease;
  transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 12px;
  overflow: hidden;
  backface-visibility: hidden;
}

.flip-card-front {
  background-color: #fff;
  color: black;
}

.flip-card-front img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.9);
}

.project-title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  padding: 0.5rem 1rem;
  font-weight: 600;
  font-size: 1.1rem;
  text-align: left;
}

.flip-card-back {
  background-color: #121212;
  transform: rotateY(180deg);
  padding: 1rem;
}

/* ====== CLIENT LOGOS ====== */
.client-logo {
  max-height: 60px;
  object-fit: contain;
  transition: transform 0.3s ease, opacity 0.3s ease;
  filter: grayscale(100%);
  opacity: 0.8;
}

.client-logo:hover {
  transform: scale(1.05);
  filter: grayscale(0%);
  opacity: 1;
}

/* ====== SOCIAL ICONS ====== */
.social-icon {
  color: #444;
  transition: transform 0.3s ease, color 0.3s ease;
}

.social-icon:hover {
  transform: scale(1.2);
}
.social-icon:hover .bi-facebook {
  color: #1877f2;
}
.social-icon:hover .bi-instagram {
  color: #e1306c;
}
.social-icon:hover .bi-linkedin {
  color: #0077b5;
}

.bg-dark-subtle {
  background-color: #1c1c1c !important;
}

/* ====== BACK-TO-TOP BUTTON ====== */
.btn-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 1050;
  background-color: var(--electric-blue);
  color: white;
  border: none;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  font-size: 1.5rem;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
  transition: background-color 0.3s ease, transform 0.3s ease;
}

.btn-top:hover {
  background-color: #005b8c;
  transform: scale(1.1);
}

/* ====== CERTIFICATION CARDS ====== */
.cert-card {
  background: #fff;
  border-radius: 1rem;
  padding: 1.5rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}
.cert-card:active {
  transform: scale(0.97);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}
.cert-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.07);
}
.cert-card i {
  display: block;
  margin-bottom: 0.75rem;
}
.cert-card h5 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #212529
}
.cert-card p {
  font-size: 0.9rem;
  color: var(--text-gray);
}

/* ====== ADVANCED TABS SECTION ====== */
#advanced-services {
  background-color: #f9f9f9;
  color: var(--black);
}

#advanced-services .nav-tabs .nav-link {
  font-weight: 600;
  font-size: 1rem;
  color: var(--black);
  border: none;
  border-bottom: 3px solid transparent;
  transition: all 0.3s ease;
  background: transparent;
}

#advanced-services .nav-tabs .nav-link:hover {
  color: var(--electric-blue);
  border-color: var(--electric-blue);
}

#advanced-services .nav-tabs .nav-link.active {
  color: var(--electric-blue);
  border-color: var(--electric-blue);
  background-color: transparent;
}

#advanced-services h4,
#advanced-services h5 {
  font-weight: 800;
  color: var(--electric-blue);
}

#advanced-services img {
  max-width: 100%;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

#advanced-services .tab-pane {
  padding: 2rem 1rem;
  background-color: #ffffff;
  border-radius: 10px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}

.service-card {
  height: 100%;
  transition: transform 0.3s ease;
  border-radius: 10px;
}
.service-card h6{
  color: #212529
}

.service-card:hover {
  transform: translateY(-5px);
}
.service-card i {
  display: block;
}

/* ====== TIMELINE STYLES ====== */
.timeline-wrapper {
  background-color: #fff;
  border-radius: 12px;
  padding: 2rem 1rem;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
  overflow-x: auto;
}

.timeline {
  border-top: 2px solid var(--electric-blue);
  padding-top: 2rem;
  min-width: 100%;
  position: relative;
}

.timeline-step-card {
  width: 140px;
  flex-shrink: 0;
}

.dot.small-dot {
  width: 36px;
  height: 36px;
  background-color: var(--electric-blue);
  border-radius: 50%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.5rem;
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.1);
  transform: translateY(-25px);
  transition: transform 0.3s ease;
}
.timeline-step-card:hover .dot.small-dot {
  transform: translateY(-28px) scale(1.05);
  background-color: #005b8c;
}

.animate-icon i {
  transition: transform 0.3s ease;
}
.animate-icon:hover i {
  transform: scale(1.2);
}

.methodology-img {
  width: 80%;
  height: auto;
  display: block;
  margin: 0 auto;
}

#contact input:focus,
#contact textarea:focus {
  border-color: var(--electric-blue);
  box-shadow: 0 0 0 0.2rem rgba(0, 160, 255, 0.25);
}

footer .container {
  flex-wrap: wrap;
  gap: 1rem;
  text-align: center;
}

footer {
  border-top: 1px solid #444;
}

.nav-link-footer:hover {
  color: var(--electric-blue); /* o tu color primario */
}

section[id] {
  scroll-margin-top: 120px;
}

@media (max-width: 767.98px) {
  #mainHeader {
    padding: 0.75rem 1rem;
  }

  #mainHeader > .container-fluid {
    padding: 0;
    margin: 0;
    width: 100%;
  }

  .logo {
    max-width: 120px;
    height: auto;
    object-fit: contain;
  }

  .navbar-toggler {
    background-color: #0d6efd;
    border: none;
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
  }

  .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3e%3cpath stroke='white' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    background-size: 100% 100%;
    background-repeat: no-repeat;
    width: 1.5rem;
    height: 1.5rem;
  }

  #mainMenuMobile nav {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 1rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    padding: 1rem;
    margin: 0.5rem 1rem;
    animation: fadeInMenu 0.25s ease-out;
    border: 1px solid rgba(0, 0, 0, 0.05);
  }

  /* Animación suave */
  @keyframes fadeInMenu {
    from {
      opacity: 0;
      transform: translateY(-10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  #mainMenuMobile a.nav-link {
    font-weight: 600;
    color: #111;
    padding: 0.75rem;
    text-align: center;
    border-radius: 0.5rem;
    transition: background 0.2s ease-in-out, color 0.2s;
  }

  #mainMenuMobile a.nav-link:hover {
    background-color: rgba(13, 110, 253, 0.08);
    color: #0d6efd;
  }

  #mainMenuMobile .dropdown {
    width: 100%;
    display: flex;
    justify-content: center;
    margin-top: 0.75rem;
  }

  #mainMenuMobile .dropdown .btn {
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
  }

  .d-flex {
    flex-wrap: wrap;
  }

  .lang-option {
    font-size: 1.5rem;
    padding: 0.4rem 0.8rem;
    border-radius: 0.5rem;
    transition: background 0.2s;
  }

  .lang-option:hover {
    background-color: rgba(13, 110, 253, 0.1);
  }
  #heroCarousel {
    min-height: 100vh;
  }

  .carousel-item {
    height: 100vh;
    background-size: cover;
    background-position: center;
    position: relative;
  }

  .carousel-caption {
    bottom: 15%;
    padding: 1rem;
  }

  .carousel-caption h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
  }

  .carousel-caption p {
    font-size: 1rem;
    color: #eee;
    margin-bottom: 1rem;
  }

  .btn-hero {
    font-size: 0.95rem;
    padding: 0.5rem 1.25rem;
    border-radius: 0.5rem;
    background-color: #0d6efd;
    color: white;
    border: none;
    transition: background 0.3s;
  }

  .btn-hero:hover {
    background-color: #0b5ed7;
  }

  .carousel-control-prev,
  .carousel-control-next {
    width: 15%;
  }

  .carousel-control-prev-icon,
  .carousel-control-next-icon {
    filter: invert(1);
  }

  .overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1;
  }

  .carousel-caption {
    position: relative;
    z-index: 2;
  }
  #about {
    padding: 3rem 1.25rem;
  }

  #about .text-center h2 {
    font-size: 1.6rem;
  }

  #about img {
    width: 100%;
    height: auto;
    object-fit: contain;
    display: block;
  }

  #about p {
    font-size: 1rem;
    line-height: 1.6;
  }

  #about .col-md-6 {
    text-align: center;
  }

  #about .col-md-6:last-child {
    margin-top: 1.5rem;
  }

  #about .col-md-6:first-child {
    height: 100%;
    max-height: 400px;
    overflow: hidden;
  }

  #certifications {
    padding: 2.5rem 1rem;
  }

  #certifications h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
  }

  #certifications p {
    font-size: 0.95rem;
    margin-bottom: 2rem;
  }

  .cert-card {
    background: #fff;
    border-radius: 1rem;
    padding: 1.5rem;
    transition: transform 0.3s ease;
  }

  .cert-card:hover {
    transform: translateY(-4px);
  }

  .cert-card i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
  }

  #specialized-services {
    padding: 2.5rem 1rem;
  }

  #specialized-services h2 {
    font-size: 1.6rem;
    margin-bottom: 0.75rem;
  }

  #specialized-services p {
    font-size: 1rem;
    margin-bottom: 1.5rem;
  }

  .service-card {
    background: #f8f9fa;
    border-radius: 0.75rem;
    padding: 1rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  }

  .service-card:hover,
  .service-card:focus {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
  }

  .service-card:active {
    transform: scale(0.97);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  }

  .service-card i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
  }

  .service-card h6 {
    font-size: 1rem;
  }

  .service-card p {
    font-size: 0.85rem;
    color: #6c757d;
  }

  .btn-outline-primary.btn-sm.animate-icon {
    padding: 0.4rem 0.75rem;
    font-size: 0.875rem;
  }

  #methodTabs {
    display: flex;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.5rem;
  }
  #methodTabs .nav-item {
    flex: 0 0 auto;
  }
  #methodTabs .nav-link {
    white-space: nowrap;
    padding: 0.5rem 1rem;
  }

  #methodology {
    padding: 2.5rem 1rem;
  }

  #methodology .tab-content .row {
    flex-direction: column;
    gap: 1.5rem;
  }

  .methodology-img {
    width: 100%;
    height: auto;
    border-radius: 0.75rem;
    margin-bottom: 1rem;
  }

  .timeline-wrapper {
    margin-top: 2rem;
  }

  .timeline {
    gap: 1rem;
  }

  .timeline-step-card {
    min-width: 120px;
    flex: 0 0 auto;
    background: #fff;
    border-radius: 0.75rem;
    padding: 1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.07);
    transition: transform 0.2s ease;
  }

  .timeline-step-card:active {
    transform: scale(0.97);
  }

  .timeline-step-card .dot {
    width: 2.5rem;
    height: 2.5rem;
  }

  .client-logo {
    max-height: 50px;
    filter: grayscale(0%);
  }

  #contact .form-control,
  #contact textarea {
    font-size: 0.95rem;
    padding: 0.5rem 0.75rem;
  }

  #contact .btn {
    padding: 0.5rem 1rem;
    font-size: 0.95rem;
  }

  #contact .map-wrapper {
    height: 200px;
  }

  footer nav {
    flex-direction: column;
    align-items: center;
  }

  footer .d-flex.fs-5 {
    justify-content: center;
  }

  .nav-link-footer {
    padding: 0.25rem 0;
  }
}