/* --- VARIABLES --- */
/* ROOT */
:root {
  /* Colores base */
  --bg-color: #050505;
  --card-bg: #121212;
  --text-main: #ffffff;
  --text-muted: #b3b3b3;

  /* Accent principal */
  --accent: #0099ff;
  --accent-glow: rgba(0, 153, 255, 0.4);

  /* Glass / UI */
  --glass: rgba(255, 255, 255, 0.05);
  --transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);

  /* Scrollbar mapping */
  --sb-track: var(--glass);
  --sb-thumb: var(--accent);
  --sb-thumb-hover: #4db8ff; /* versión más clara del accent */
  --sb-glow: var(--accent-glow);

  /* Tamaño y forma */
  --radius: 999px;
  --size: 12px;
}

/* -- ESTILOS BASE --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  z-index: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--sb-thumb) var(--sb-track);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Montserrat", sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  overflow-x: hidden;
  line-height: 1.6;
}

h1,
h2,
h3 {
  font-family: "Space Grotesk", sans-serif;
  text-transform: uppercase;
  letter-spacing: -1px;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}
ul {
  list-style: none;
}

/*-- SCROLL --*/

/* WebKit browsers */
*::-webkit-scrollbar {
  width: var(--size);
  height: var(--size);
}

*::-webkit-scrollbar-track {
  background: var(--sb-track);
  border-radius: var(--radius);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

*::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--sb-thumb), rgba(0, 220, 255, 0.55));
  border-radius: var(--radius);
  border: 2px solid rgba(0, 0, 0, 0.35);
  box-shadow: 0 0 18px var(--sb-glow);
}

*::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(
    180deg,
    var(--sb-thumb-hover),
    rgba(0, 220, 255, 0.75)
  );
  box-shadow: 0 0 26px var(--sb-glow);
}

/* Optional: corner for horizontal+vertical scroll */
*::-webkit-scrollbar-corner {
  background: transparent;
}

/* --- SPLASH SCREEN  --- */
#splash-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-color);
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  transition:
    opacity 0.8s cubic-bezier(0.23, 1, 0.32, 1),
    visibility 0.8s;
}

.splash-content {
  position: relative;
  text-align: center;
}

.splash-logo {
  width: 120px;
  height: auto;
  opacity: 0;
  filter: drop-shadow(0 0 0px rgba(0, 153, 255, 0));
  animation: logoEntrance 1.5s cubic-bezier(0.23, 1, 0.32, 1) forwards;
}

.splash-bar {
  width: 0%;
  height: 2px;
  background: var(--accent);
  margin-top: 20px;
  border-radius: 2px;
  box-shadow: 0 0 10px var(--accent-glow);
  animation: loadBar 2s cubic-bezier(0.23, 1, 0.32, 1) forwards;
}

@keyframes logoEntrance {
  0% {
    opacity: 0;
    transform: scale(0.8) translateY(20px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
    filter: drop-shadow(0 0 30px var(--accent-glow));
  }
}

@keyframes loadBar {
  0% {
    width: 0%;
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    width: 100px;
    opacity: 0;
  }
}

.splash-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* --- UI COMPONENTS --- */
.btn {
  display: inline-block;
  padding: 12px 30px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: 2px solid var(--accent);
  color: var(--accent);
  position: relative;
  overflow: hidden;
  z-index: 1;
  cursor: pointer;
  font-size: 0.9rem;
  background: transparent;
  border-radius: 15px;
  background-color: #00000063;
  backdrop-filter: blur(5px);
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 0%;
  height: 100%;
  background: var(--accent);
  z-index: -1;
  transition: var(--transition);
}

.btn:hover::before {
  width: 100%;
}
.btn:hover {
  color: #fff;
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-fill {
  background: var(--accent);
  color: #fff;
}
.btn-fill:hover {
  background: transparent;
  color: var(--accent);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.8rem;
  margin-top: 20px;
  width: 100%;
  text-align: center;
}

.section-title {
  font-size: 3rem;
  margin-bottom: 3rem;
  text-align: center;
  position: relative;
  display: inline-block;
  left: 50%;
  transform: translateX(-50%);
}

.section-title span {
  color: var(--accent);
}

/* --- ANIMATIONS --- */
.hidden {
  opacity: 0;
  transform: translateY(50px);
  transition: 1s ease;
}
.show {
  opacity: 1;
  transform: translateY(0);
}

/* --- NAVBAR --- */
nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 20px 50px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  background: rgba(5, 5, 5, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -1px;
}
.logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 30px;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
}
.nav-links a:hover {
  color: var(--accent);
}

/* --- HERO SECTION --- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  padding: 120px 20px 50px;
}

.hero::before {
  content: "";
  position: absolute;
  top: -20%;
  left: -20%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  filter: blur(100px);
  opacity: 0.5;
  z-index: -1;
  animation: pulse 10s infinite alternate;
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  100% {
    transform: scale(1.2);
  }
}

.hero h1 {
  font-size: 4rem;
  line-height: 1.1;
  margin-bottom: 20px;
  max-width: 900px;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  max-width: 600px;
}

.video-wrapper {
  width: 100%;
  max-width: 900px;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: 20px;
  overflow: hidden;
  box-shadow:
    0 20px 50px rgba(0, 0, 0, 0.8),
    0 0 30px var(--accent-glow);
  margin-bottom: 40px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
}

iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* --- ABOUT SECTION --- */
.about {
  padding: 100px 50px;
  display: flex;
  align-items: center;
  gap: 60px;
  max-width: 1200px;
  margin: 0 auto;
}

.about-img {
  flex: 1;
  position: relative;
}
.about-img img {
  width: 100%;
  border-radius: 10px;
  filter: grayscale(100%);
  transition: var(--transition);
  box-shadow: 20px 20px 0px var(--card-bg);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.about-img:hover img {
  filter: grayscale(0%);
  box-shadow: 20px 20px 0px var(--accent);
}
.about-text {
  flex: 1;
}
.about-text h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}
.about-text p {
  color: var(--text-muted);
  margin-bottom: 30px;
  font-size: 1.1rem;
}

/* --- CATEGORIES --- */
.services {
  padding: 100px 50px;
  background: rgba(51, 76, 105, 0.329);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.services-grid i {
  font-size: 1.8rem;
  margin-bottom: 15px;
}

.card {
  background: var(--card-bg);
  padding: 40px;
  border-radius: 15px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.card:hover {
  transform: translateY(-10px);
  border-color: var(--accent);
  box-shadow: 0 10px 40px -10px var(--accent-glow);
}

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
}
.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

/* --- MODAL GALLERY STYLES --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(5, 5, 5, 0.95); /* Slightly darker for contrast */
  backdrop-filter: blur(15px);
  z-index: 2000;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-content {
  width: 95%;
  max-width: 1200px;
  background: #0a0a0a; /* Deep dark bg */
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  padding: 40px;
  position: relative;
  transform: scale(0.95) translateY(20px);
  transition: all 0.5s var(--ease-out-expo);
  box-shadow: 0 0 80px rgba(0, 0, 0, 0.9);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-overlay.active .modal-content {
  transform: scale(1) translateY(0);
}

.close-modal {
  position: absolute;
  top: 25px;
  right: 25px;
  font-size: 1.8rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  z-index: 20;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.close-modal:hover {
  color: var(--accent);
  transform: rotate(90deg);
}

.gallery-header {
  text-align: center;
  margin-bottom: 50px;
}

.gallery-header h3 {
  font-size: 2.5rem;
  letter-spacing: -1px;
  background: linear-gradient(to right, #fff, #888);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* --- MODERN FLUID CAROUSEL --- */

.gallery-container-vertical {
  display: flex;
  flex-direction: column;
  gap: 60px;
  width: 100%;
  padding-bottom: 40px;
}

.subcategory-section h4 {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  padding-left: 20px;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.subcategory-section h4::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent);
}

/* Wrapper serves as the "stage" */
.carousel-wrapper {
  position: relative;
  /* Mask for fading edges */
  mask-image: linear-gradient(
    to right,
    transparent 0%,
    black 5%,
    black 95%,
    transparent 100%
  );
  -webkit-mask-image: linear-gradient(
    to right,
    transparent 0%,
    black 5%,
    black 95%,
    transparent 100%
  );
}

.carousel-track {
  display: flex;
  gap: 20px; /* More breathing room */
  overflow-x: auto;
  scroll-behavior: smooth;
  scroll-snap-type: x mandatory;

  /* Padding top/bottom allows scale hover effects without clipping */
  padding: 30px 5% 30px 5%;
  width: 100%;

  scrollbar-width: none;
  -ms-overflow-style: none;
}

.carousel-track::-webkit-scrollbar {
  display: none;
}

/* CARD STYLES */
.carousel-card {
  min-width: 300px;
  height: 400px; /* Taller aspect ratio (modern portrait style) */
  flex-shrink: 0;
  scroll-snap-align: center; /* Center alignment feels more premium */
  border-radius: 16px;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.05);
  background: #1a1a1a;
  transition: all 0.5s var(--ease-out-expo);
  cursor: pointer;
}

/* HOVER "SPOTLIGHT" EFFECT Logic */
/* When hovering the track, dim everyone */
.carousel-track:hover .carousel-card {
  opacity: 0.4;
  filter: grayscale(0.8) blur(1px);
  transform: scale(0.98);
}

/* But restore the specific card being hovered */
.carousel-track .carousel-card:hover {
  opacity: 1;
  filter: grayscale(0) blur(0px);
  transform: scale(1.01) translateY(-10px);
  z-index: 10;
  border-color: var(--accent);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8);
}

.carousel-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s cubic-bezier(0.1, 0, 0.2, 1);
}

/* Subtle zoom on image internal */
.carousel-card:hover img {
  transform: scale(1.15);
}

/* Gradient Overlay for text readability (optional if you add titles later) */
.carousel-card::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  opacity: 0.6;
  transition: var(--transition);
}

.carousel-card:hover::after {
  opacity: 0.3;
}

/* NAVIGATION BUTTONS */
.nav-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #fff;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 20;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  opacity: 0; /* Hidden by default */
  visibility: hidden;
}

/* Show buttons only when hovering the wrapper */
.carousel-wrapper:hover .nav-btn {
  opacity: 1;
  visibility: visible;
}

.nav-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 0 20px var(--accent-glow);
}

.nav-prev {
  left: 20px;
}
.nav-next {
  right: 20px;
}

/* Link Badge Styles - Modernized */
.link-badge {
  position: absolute;
  top: 15px;
  right: 15px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  opacity: 0;
  transform: translateY(10px) rotate(-45deg);
  transition: all 0.4s var(--ease-out-expo);
  z-index: 5;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
}

.carousel-card:hover .link-badge {
  opacity: 1;
  transform: translateY(0) rotate(0deg);
}

/* --- CONTACT --- */
.contact {
  padding: 100px 50px;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 50px;
}

.contact-info {
  flex: 1;
  min-width: 300px;
}
.contact-info h2 {
  font-size: 3rem;
  margin-bottom: 20px;
}
.contact-info p {
  color: var(--text-muted);
  margin-bottom: 40px;
}

.social-links {
  display: flex;
  gap: 20px;
  margin-top: 30px;
}
.social-btn {
  width: 50px;
  height: 50px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}
.social-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
}

.contact-form {
  flex: 1;
  min-width: 300px;
  background: var(--card-bg);
  padding: 40px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 15px;
  background: #000;
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #fff;
  border-radius: 8px;
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
}

/* Área grande para scrubbing */
.scroll-seq {
  height: 400vh;
  position: absolute;
  overflow: hidden;
}

/* Capa fija (los íconos quedan “clavados” al viewport) */
.seq-layer {
  position: fixed;
  inset: 0;
  pointer-events: none; /* para que no estorbe clicks/scroll */
  z-index: 10;
}

.seq-canvas {
  position: absolute;
  width: 220px; /* tamaño visual */
  height: 220px; /* tamaño visual */
  image-rendering: auto;
  filter: brightness(0.8);
  transition: transform 0.1s linear; /* Suaviza micro-saltos de cálculo */
  will-change: transform; /* Optimiza para la tarjeta de video */
}

#iconA {
  top: 18vh;
  left: 10vw;
}
#iconB {
  top: 18vh;
  right: 10vw;
}
#iconC {
  bottom: 12vh;
  right: 0%;
  transform: translateX(-10%);
}

/* --- FOOTER --- */
footer {
  padding: 40px;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  .about {
    flex-direction: column;
  }
  .nav-links {
    display: none;
  }
  nav {
    padding: 20px;
  }
  nav .btn {
    padding: 12px 10px;
  }
  .logo {
    display: none;
  }

  .btn-list {
    flex-direction: column;
  }

  .seq-canvas {
    width: 130px;
    height: 130px;
  }

  #iconA {
    top: 24vh;
    left: -14vw;
  }
  #iconB {
    top: 9vh;
    right: -7vw;
  }
  #iconC {
    bottom: 1vh;
    right: -3%;
    transform: translateX(-10%);
  }

  .scroll-seq {
    height: 700vh;
  }

  /* Carousel mobile overrides */
  .nav-btn {
    display: none;
  } /* Hide arrows, use touch */
  .carousel-card {
    min-width: 260px;
    height: 260px;
  }
  .modal-content {
    padding: 20px;
    padding-top: 80px;
    width: 100%;
    height: 100%;
    max-height: 100vh;
    border-radius: 0;
  }
  .carousel-track:hover .carousel-card {
    opacity: 1;
    filter: none;
    transform: none;
  }

  .subcategory-section h4 {
    padding-bottom: 0;
    margin-bottom: 0;
  }

  .gallery-container-vertical {
    gap: 15px;
  }
}