/* Variables CSS para temas */
:root {
  /* Colores base WDF Services */
  --primary-color: #15a59f;
  --primary-dark: #0d7d79;
  --primary-light: #4db8b3;
  --accent-color: #193032;

  /* Tema oscuro (default) */
  --bg-primary: #0a0a0a;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2a2a2a;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --text-tertiary: #808080;
  --border-color: #333333;
  --card-bg: rgba(26, 26, 26, 0.8);
  --glass-bg: rgba(255, 255, 255, 0.05);
  --shadow-color: rgba(0, 0, 0, 0.3);
}

[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --text-primary: #212529;
  --text-secondary: #495057;
  --text-tertiary: #6c757d;
  --border-color: #dee2e6;
  --card-bg: rgba(248, 249, 250, 0.8);
  --glass-bg: rgba(0, 0, 0, 0.02);
  --shadow-color: rgba(0, 0, 0, 0.1);
}

/* Reset y base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Pantalla de carga */
.loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
}

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

.logo-container {
  margin-bottom: 2rem;
  animation: logoFloat 2s ease-in-out infinite;
}

.loader-logo {
  width: 120px;
  height: auto;
  filter: brightness(0) invert(1);
}

[data-theme="light"] .loader-logo {
  filter: none;
}

.loading-bar {
  width: 200px;
  height: 4px;
  background: var(--border-color);
  border-radius: 2px;
  overflow: hidden;
  margin: 0 auto 1rem;
}

.loading-progress {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
  border-radius: 2px;
  animation: loadingProgress 2s ease-out forwards;
}

.loading-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
  animation: textPulse 1.5s ease-in-out infinite;
}

/* Fondo de partículas */
#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  /* Se elimina height: 100vh para que el JS controle la altura total */
  z-index: -1;
  pointer-events: none;
  opacity: 1;
  background: transparent;
}

/* Asegurar que el contenido esté por encima de las partículas */
.header, .main {
  position: relative;
  z-index: 10;
  background: transparent;
}

/* Hacer las secciones transparentes para ver las partículas */
.ai-solutions, .benefits, .sector-implementation {
  background: transparent;
}

[data-theme="light"] .ai-solutions,
[data-theme="light"] .benefits,
[data-theme="light"] .sector-implementation {
  background: transparent;
}

/* Barra de scroll personalizada */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border-radius: 4px;
  transition: all 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
  box-shadow: 0 0 10px rgba(21, 165, 159, 0.5);
}

html {
  scrollbar-width: thin;
  scrollbar-color: var(--primary-color) var(--bg-tertiary);
}

/* Header dinámico */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.header.hidden {
  transform: translateY(-100%);
  opacity: 0;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo {
  height: 40px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: transform 0.3s ease;
}

[data-theme="light"] .nav-logo {
  filter: none;
}

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

.nav-controls {
  display: flex;
  gap: 1rem;
  align-items: center;
  /* ==== FIX: Asegurar que los controles estén por encima de otros elementos ==== */
  position: relative;
  z-index: 1;
}

.theme-toggle,
.fullscreen-toggle {
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.theme-toggle:hover,
.fullscreen-toggle:hover {
  background: var(--primary-color);
  transform: scale(1.1);
}

.theme-icon {
  font-size: 1.2rem;
  transition: transform 0.3s ease;
}

/* Contenido principal */
.main {
  padding-top: 80px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Sección héroe */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 2rem 0;
}

.hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.title-line {
  display: block;
  opacity: 0;
  transform: translateY(30px);
  animation: slideInUp 0.8s ease forwards;
}

.title-line:nth-child(2) {
  animation-delay: 0.2s;
}

.title-line:nth-child(3) {
  animation-delay: 0.4s;
}

.highlight {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 2.5rem;
  opacity: 0;
  animation: slideInUp 0.8s ease 0.6s forwards;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: slideInUp 0.8s ease 0.8s forwards;
}

/* Botones */
.btn {
  padding: 1rem 2rem;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transition: all 0.5s ease;
  transform: translate(-50%, -50%);
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: white;
  box-shadow: 0 4px 15px rgba(21, 165, 159, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(21, 165, 159, 0.4);
}

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

.btn-secondary:hover {
  background: var(--glass-bg);
  transform: translateY(-2px);
}

/* Secciones */
section {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

/* Sección AI Solutions */
.ai-solutions {
}

.ai-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.ai-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2.5rem;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.ai-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.ai-card:hover::before {
  transform: scaleX(1);
}

.ai-card:hover {
  transform: translateY(-15px) scale(1.02);
  box-shadow: 0 25px 50px var(--shadow-color), 0 0 30px rgba(21, 165, 159, 0.2);
}

.ai-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--accent-color), var(--primary-dark));
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: white;
  font-size: 2rem;
}

.card-icon svg {
  width: 30px;
  height: 30px;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.card-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.card-features {
  list-style: none;
}

.card-features li {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  position: relative;
  padding-left: 1.5rem;
}

.card-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

/* Sección beneficios */
.benefits {
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.benefit-item {
  text-align: center;
  padding: 2rem;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.benefit-item:hover {
  transform: translateY(-8px) scale(1.03);
  box-shadow: 0 20px 40px var(--shadow-color), 0 0 20px rgba(21, 165, 159, 0.15);
}

.benefit-number {
  font-size: 3rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.benefit-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.benefit-description {
  color: var(--text-secondary);
}

/* Sección Implementación por Sector */
.sector-implementation {
  position: relative;
}

.sector-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.sector-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2.5rem;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.sector-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
}

.sector-card.aerospace::before {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(147, 51, 234, 0.1));
}

.sector-card.medical::before {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), rgba(21, 165, 159, 0.1));
}

.sector-card.automotive::before {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(245, 101, 101, 0.1));
}

.sector-card.energy::before {
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.1), rgba(245, 158, 11, 0.1));
}

.sector-card:hover::before {
  opacity: 1;
}

.sector-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 25px 50px var(--shadow-color);
}

.sector-card > * {
  position: relative;
  z-index: 1;
}

.sector-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: block;
}

.sector-card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.sector-content h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.sector-content ul {
  list-style: none;
  padding: 0;
  margin-bottom: 1.5rem;
}

.sector-content li {
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  position: relative;
  padding-left: 1.5rem;
  line-height: 1.5;
}

.sector-content li::before {
  content: '▶';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-size: 0.7rem;
  top: 0.2rem;
}

.sector-content strong {
  color: var(--primary-color);
  font-weight: 600;
}

.integration-badge {
  background: linear-gradient(135deg, var(--accent-color), var(--primary-dark));
  padding: 0.75rem 1rem;
  border-radius: 10px;
  margin-top: 1rem;
}

.integration-badge span {
  color: white;
  font-size: 0.9rem;
  font-weight: 500;
}

/* Animaciones y Media Queries */
@keyframes logoFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes loadingProgress{0%{width:0%}100%{width:100%}}@keyframes textPulse{0%,100%{opacity:.6}50%{opacity:1}}@keyframes slideInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}[data-aos]{opacity:0;transition:all 1.2s cubic-bezier(.25,.46,.45,.94);will-change:transform,opacity}[data-aos].aos-animate{opacity:1}[data-aos=fade-up]{transform:translateY(50px) scale(.95)}[data-aos=fade-up].aos-animate{transform:translateY(0) scale(1)}[data-aos=fade-right]{transform:translateX(-50px) scale(.95)}[data-aos=fade-right].aos-animate{transform:translateX(0) scale(1)}[data-aos=fade-left]{transform:translateX(50px) scale(.95)}[data-aos=fade-left].aos-animate{transform:translateX(0) scale(1)}*{transition:background-color .4s cubic-bezier(.25,.46,.45,.94),border-color .4s cubic-bezier(.25,.46,.45,.94),color .4s cubic-bezier(.25,.46,.45,.94),box-shadow .4s cubic-bezier(.25,.46,.45,.94)}@media (max-width:768px){.nav{padding:1rem}.nav-controls{gap:.5rem}.fullscreen-toggle,.theme-toggle{width:40px;height:40px}.container{padding:0 1rem}.hero-cta{flex-direction:column;align-items:center}.btn{width:100%;max-width:280px}.ai-grid{grid-template-columns:1fr;gap:1.5rem}.ai-card{padding:2rem}.benefits-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}.sector-grid{grid-template-columns:1fr;gap:1.5rem}.sector-card{padding:2rem}.sector-icon{font-size:2.5rem}section{padding:4rem 0}}@media (max-width:480px){.hero-title{font-size:2rem}.section-title{font-size:1.8rem}.ai-card{padding:1.5rem}.benefit-number{font-size:2.5rem}.sector-card{padding:1.5rem}.sector-card h3{font-size:1.3rem}.sector-icon{font-size:2rem}.ai-badge{font-size:.7rem;padding:.4rem .8rem}}body.fullscreen-mode .header{background:rgba(0,0,0,.8);backdrop-filter:blur(20px)}body.fullscreen-mode #particles-canvas{filter:brightness(1.2) contrast(1.1)}