/* ===== CSS VARIABLES & FOUNDATION ===== */
:root {
  /* Colors - Dark Tech Palette */
  --bg-primary: #0a0e27;
  --bg-secondary: #141829;
  --bg-tertiary: #1a1f3a;

  --text-primary: #f0f4ff;
  --text-secondary: #a8b2d1;
  --text-muted: #6b7280;

  --accent-primary: #00d9ff;
  --accent-secondary: #7c3aed;
  --accent-tertiary: #06b6d4;

  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Spacing */
  --spacing-1: 0.5rem;
  --spacing-2: 1rem;
  --spacing-3: 1.5rem;
  --spacing-4: 2rem;
  --spacing-6: 3rem;
  --spacing-8: 4rem;
  --spacing-12: 6rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 20px rgba(0, 217, 255, 0.2);
}

/* ===== GLOBAL STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.6;
  font-size: var(--font-size-base);
  overflow-x: hidden;
}

#app {
  width: 100%;
  min-height: 100vh;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p {
  color: var(--text-secondary);
  line-height: 1.7;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-tertiary);
}

/* ===== LAYOUT UTILITIES ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: linear-gradient(180deg, rgba(10, 14, 39, 0.95) 0%, rgba(10, 14, 39, 0.8) 100%);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 217, 255, 0.1);
  transition: all var(--transition-base);
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-3) var(--spacing-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 0;
  font-weight: 700;
}

.logo-main {
  font-size: var(--font-size-xl);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.logo-sub {
  font-size: var(--font-size-xs);
  letter-spacing: 0.15em;
  color: var(--text-secondary);
  font-weight: 500;
  line-height: 1;
}

.nav {
  display: flex;
  gap: var(--spacing-4);
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover {
  color: var(--accent-primary);
}

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

.hamburger {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  gap: 6px;
  cursor: pointer;
  padding: var(--spacing-2);
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--accent-primary);
  transition: all var(--transition-base);
  border-radius: var(--radius-sm);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(10px, 10px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* ===== HERO SECTION ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: var(--spacing-12);
  background: var(--bg-primary);
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  overflow: hidden;
}

.gradient-orb {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 217, 255, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  top: -200px;
  right: -150px;
  animation: float 6s ease-in-out infinite;
  filter: blur(40px);
}

@keyframes float {
  0%, 100% { transform: translateY(0px) translateX(0px); }
  50% { transform: translateY(-30px) translateX(-20px); }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
  animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-title {
  font-size: clamp(2.25rem, 6vw, 5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-3);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary), var(--accent-primary));
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-6);
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-3);
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== BUTTONS ===== */
.btn {
  padding: 0.875rem 2rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
  border: 2px solid transparent;
  cursor: pointer;
  display: inline-block;
  text-align: center;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary));
  color: var(--bg-primary);
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0, 217, 255, 0.5);
}

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

.btn-secondary:hover {
  background: rgba(0, 217, 255, 0.1);
  transform: translateY(-2px);
}

.btn-large {
  padding: 1.25rem 3rem;
  font-size: var(--font-size-lg);
}

/* ===== SECTIONS ===== */
section {
  padding: var(--spacing-12) 0;
}

.section-title {
  font-size: clamp(2.25rem, 4vw, 3.75rem);
  margin-bottom: var(--spacing-2);
  text-align: center;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  text-align: center;
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-8);
}

/* ===== SERVICIOS SECTION ===== */
.servicios {
  background: var(--bg-secondary);
}

.servicios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-6);
  margin-top: var(--spacing-8);
}

.service-card {
  background: linear-gradient(135deg, var(--bg-tertiary), rgba(20, 24, 41, 0.5));
  border: 1px solid rgba(0, 217, 255, 0.2);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-card:hover {
  border-color: var(--accent-primary);
  transform: translateY(-8px);
  box-shadow: 0 0 30px rgba(0, 217, 255, 0.2);
}

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

.service-icon {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-3);
  display: block;
}

.service-card h3 {
  margin-bottom: var(--spacing-2);
  color: var(--text-primary);
}

.service-card p {
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== CASOS SECTION ===== */
.casos {
  background: var(--bg-primary);
}

.casos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-4);
  margin-top: var(--spacing-8);
}

.caso-card {
  background: rgba(20, 24, 41, 0.6);
  border: 1px solid rgba(0, 217, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: var(--spacing-4);
  transition: all var(--transition-base);
  text-align: center;
}

.caso-card:hover {
  border-color: var(--accent-tertiary);
  background: rgba(20, 24, 41, 0.9);
  transform: scale(1.05);
}

.caso-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-2);
  display: block;
}

.caso-card h3 {
  margin-bottom: var(--spacing-2);
  color: var(--text-primary);
  font-size: var(--font-size-lg);
}

.caso-card p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* ===== CLIENTES SECTION ===== */
.clientes {
  background: var(--bg-secondary);
}

.clientes-carrusel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-4);
  margin-top: var(--spacing-8);
  align-items: center;
}

.cliente-logo {
  background: rgba(20, 24, 41, 0.6);
  border: 1px solid rgba(0, 217, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--spacing-4);
  text-align: center;
  transition: all var(--transition-base);
  min-height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cliente-logo:hover {
  border-color: var(--accent-primary);
  background: rgba(20, 24, 41, 0.9);
  transform: translateY(-4px);
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.15);
}

.logo-placeholder {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-secondary);
}

/* ===== CTA SECTION ===== */
.cta {
  background: linear-gradient(135deg, var(--bg-tertiary), rgba(124, 58, 237, 0.1));
  text-align: center;
  border-top: 1px solid rgba(0, 217, 255, 0.2);
  border-bottom: 1px solid rgba(0, 217, 255, 0.2);
}

.cta h2 {
  margin-bottom: var(--spacing-2);
}

.cta p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-4);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(0, 217, 255, 0.1);
  padding: var(--spacing-8) 0 var(--spacing-4);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-6);
}

.footer-section h4 {
  margin-bottom: var(--spacing-2);
  color: var(--accent-primary);
}

.footer-section p,
.footer-section a {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.social-link {
  display: inline-block;
  color: var(--accent-primary);
  transition: all var(--transition-fast);
}

.social-link:hover {
  color: var(--accent-tertiary);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-4);
  border-top: 1px solid rgba(0, 217, 255, 0.1);
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

/* ===== FLOATING WHATSAPP BUTTON ===== */
.whatsapp-float {
  position: fixed;
  bottom: var(--spacing-6);
  right: var(--spacing-6);
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #25d366, #20ba58);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
  z-index: 999;
  box-shadow: 0 0 20px rgba(37, 211, 102, 0.4);
}

.whatsapp-float svg {
  width: 32px;
  height: 32px;
  color: white;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 0 30px rgba(37, 211, 102, 0.6);
}

/* ===== SCROLL ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease-out forwards;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    flex-direction: column;
    gap: var(--spacing-2);
    padding: var(--spacing-4);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    border-bottom: 1px solid rgba(0, 217, 255, 0.1);
  }

  .nav.active {
    max-height: 300px;
  }

  .nav-link {
    padding: var(--spacing-2) 0;
  }

  .hero-buttons {
    gap: var(--spacing-2);
  }

  .btn {
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-sm);
  }

  .servicios-grid,
  .casos-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-4);
  }

  .clientes-carrusel {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }

  .whatsapp-float {
    bottom: var(--spacing-4);
    right: var(--spacing-4);
    width: 50px;
    height: 50px;
  }

  .whatsapp-float svg {
    width: 28px;
    height: 28px;
  }

  section {
    padding: var(--spacing-8) 0;
  }

  .section-title {
    font-size: clamp(1.875rem, 3vw, 2.25rem);
  }

  .section-subtitle {
    margin-bottom: var(--spacing-4);
  }

  .container {
    padding: 0 var(--spacing-3);
  }
}

@media (max-width: 640px) {
  :root {
    --spacing-1: 0.375rem;
    --spacing-2: 0.75rem;
    --spacing-3: 1rem;
    --spacing-4: 1.5rem;
    --spacing-6: 2rem;
    --spacing-8: 3rem;
    --spacing-12: 4rem;
  }

  .hero {
    min-height: auto;
    padding: var(--spacing-12) 0 var(--spacing-6);
  }

  .hero-title {
    font-size: 1.875rem;
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
  }

  .service-card,
  .caso-card {
    padding: var(--spacing-3);
  }

  .footer-content {
    grid-template-columns: 1fr;
  }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}