:root {
  --color-slate-dark: #6c788e;
  --color-slate-mid: #a6aec1;
  --color-slate-light: #cfd5e1;
  --color-bg-light: #ededf2;
  --color-white: #fcfdff;
  --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Oswald', sans-serif;
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  background-color: var(--color-bg-light);
  color: var(--color-slate-dark);
  font-family: var(--font-primary);
  line-height: 1.8;
  font-size: 1.05rem;
  overflow-x: hidden;
}

/* Preloader Exclusivo Index */
#preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-slate-dark);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 99999;
  animation: fadeOutPreloader 0.5s ease 0.5s forwards;
  pointer-events: none;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--color-slate-light);
  border-top: 4px solid var(--color-white);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes fadeOutPreloader {
  to { opacity: 0; visibility: hidden; }
}

/* Disclaimer Banner */
.disclaimer-banner {
  background: var(--color-slate-dark);
  color: var(--color-white);
  border-bottom: 2px solid var(--color-slate-mid);
  padding: 0.8rem 1rem;
  font-size: 0.85rem;
  text-align: center;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* Header & Staggered Nav Animation */
header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-slate-light);
  padding: 1.2rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(108, 120, 142, 0.06);
}

.brand-title {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--color-slate-dark);
  letter-spacing: 1px;
  text-decoration: none;
}

.brand-title span {
  color: var(--color-slate-mid);
}

nav ul {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

nav li {
  opacity: 0;
  transform: translateY(-10px);
  animation: navStagger 0.5s ease forwards;
}

nav li:nth-child(1) { animation-delay: 0.1s; }
nav li:nth-child(2) { animation-delay: 0.2s; }
nav li:nth-child(3) { animation-delay: 0.3s; }
nav li:nth-child(4) { animation-delay: 0.4s; }

@keyframes navStagger {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

nav a {
  color: var(--color-slate-dark);
  text-decoration: none;
  font-weight: 600;
  position: relative;
  transition: var(--transition-smooth);
  display: inline-block;
}

nav a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--color-slate-dark);
  transition: width 0.3s ease;
}

nav a:hover {
  color: var(--color-slate-mid);
  transform: scale(1.08);
}

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

/* Text Glitch & Movement Animation */
.text-dynamic-effect {
  font-family: var(--font-display);
  font-size: 3.8rem;
  line-height: 1.1;
  text-transform: uppercase;
  color: var(--color-slate-dark);
  animation: titleFloat 4s ease-in-out infinite alternate;
  position: relative;
}

@keyframes titleFloat {
  0% { transform: translateY(0) skewX(0deg); }
  50% { transform: translateY(-4px) skewX(-1deg); text-shadow: 2px 4px 15px rgba(108,120,142,0.15); }
  100% { transform: translateY(0) skewX(0deg); }
}

.text-dynamic-effect span {
  color: var(--color-slate-mid);
  display: inline-block;
  animation: colorPulse 3s infinite alternate;
}

@keyframes colorPulse {
  0% { color: var(--color-slate-mid); }
  100% { color: var(--color-slate-dark); }
}

/* Botones con Retroalimentación de clic y Alternancia */
.btn-industrial {
  display: inline-block;
  background-color: var(--color-slate-dark);
  color: var(--color-white);
  padding: 1rem 2.8rem;
  font-weight: 700;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 4px;
  border: 2px solid var(--color-slate-dark);
  cursor: pointer;
  transition: var(--transition-smooth);
  box-shadow: 0 6px 20px rgba(108,120,142,0.2);
}

.btn-industrial:hover {
  background-color: var(--color-white);
  color: var(--color-slate-dark);
  transform: translateY(-3px);
}

.btn-industrial:active, .btn-industrial.alternate-active {
  transform: scale(0.95) translateY(1px);
  background-color: var(--color-slate-mid);
  border-color: var(--color-slate-mid);
  color: var(--color-white);
}

/* Hero Section Orgánica y Asimétrica */
.hero {
  padding: 7rem 3rem;
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 5rem;
  align-items: center;
}

.hero-content p {
  color: var(--color-slate-dark);
  font-size: 1.2rem;
  margin: 2rem 0;
  opacity: 0.9;
}

.hero-image-wrapper {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 25px 50px rgba(108, 120, 142, 0.15);
  transform: rotate(1deg);
  transition: var(--transition-smooth);
}

.hero-image-wrapper:hover {
  transform: rotate(0deg) scale(1.02);
}

.hero-image-wrapper img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  display: block;
}

/* Secciones Dinámicas de Alta Densidad con Glassmorphism */
.section-asymmetric {
  padding: 6rem 3rem;
  max-width: 1300px;
  margin: 0 auto;
}

.section-asymmetric:nth-child(even) {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-slate-light);
  border-bottom: 1px solid var(--color-slate-light);
}

.content-grid-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.content-grid-duo.reverse {
  grid-template-columns: 1fr 1fr;
  direction: rtl;
}

.content-grid-duo.reverse > * {
  direction: ltr;
}

.text-block h3 {
  font-family: var(--font-display);
  font-size: 2.4rem;
  color: var(--color-slate-dark);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

.text-block p {
  color: var(--color-slate-dark);
  margin-bottom: 1.2rem;
  opacity: 0.85;
}

/* Tarjetas Glassmorphic con Brillo al Cursor */
.glass-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  margin-top: 4rem;
}

.glass-tile {
  background: rgba(252, 253, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-slate-light);
  padding: 3rem 2rem;
  border-radius: 8px;
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
  box-shadow: 0 10px 30px rgba(108, 120, 142, 0.05);
}

.glass-tile::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.8) 0%, transparent 70%);
  opacity: 0;
  transform: scale(0.5);
  transition: opacity 0.5s, transform 0.5s;
  pointer-events: none;
}

.glass-tile:hover {
  transform: translateY(-8px);
  border-color: var(--color-slate-mid);
  box-shadow: 0 20px 40px rgba(108, 120, 142, 0.12);
}

.glass-tile:hover::before {
  opacity: 1;
  transform: scale(1);
}

.glass-tile h4 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--color-slate-dark);
  margin-bottom: 1rem;
}

.glass-tile p {
  color: var(--color-slate-dark);
  opacity: 0.8;
  font-size: 0.95rem;
}

.image-frame-styled {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 15px 35px rgba(108, 120, 142, 0.1);
  border: 2px solid var(--color-slate-light);
}

.image-frame-styled img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.image-frame-styled:hover img {
  transform: scale(1.04);
}

/* Footer Editorial */
footer {
  background: var(--color-slate-dark);
  color: var(--color-white);
  padding: 5rem 3rem 2rem;
  margin-top: 6rem;
}

.footer-content {
  max-width: 1300px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-col h4 {
  color: var(--color-slate-light);
  margin-bottom: 1.5rem;
  font-family: var(--font-display);
  font-size: 1.3rem;
  letter-spacing: 0.5px;
}

.footer-col p, .footer-col ul {
  color: var(--color-slate-light);
  font-size: 0.95://rem;
  opacity: 0.85;
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.8rem;
}

.footer-col a {
  color: var(--color-slate-light);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.footer-col a:hover {
  color: var(--color-white);
  padding-left: 5px;
}

.footer-bottom {
  max-width: 1300px;
  margin: 0 auto;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 2rem;
  text-align: center;
  color: var(--color-slate-light);
  opacity: 0.7;
  font-size: 0.9rem;
}

@media (max-width: 968px) {
  .hero, .content-grid-duo, .content-grid-duo.reverse {
    grid-template-columns: 1fr;
    direction: ltr;
    padding: 3rem 1.5rem;
  }
  .glass-card-grid {
    grid-template-columns: 1fr;
  }
  .footer-content {
    grid-template-columns: 1fr;
  }
}