/* Nexus AI Main Stylesheet */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Poppins:wght@300;400;500;600;700;800&display=swap');
@import url('./theme.css');

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary);
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-extrabold);
}

h2 {
  font-size: var(--font-size-4xl);
}

h3 {
  font-size: var(--font-size-3xl);
}

h4 {
  font-size: var(--font-size-2xl);
}

h5 {
  font-size: var(--font-size-xl);
}

h6 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

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

a:hover {
  color: var(--primary-blue);
}

/* Layout Components */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-lg);
}

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

.section-lg {
  padding: 6rem 0;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: var(--z-fixed);
  background: rgba(10, 11, 20, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: var(--border-secondary);
  transition: var(--transition-normal);
}

.header.scrolled {
  background: rgba(10, 11, 20, 0.98);
  box-shadow: var(--shadow-lg);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-height: 100px;
}

.logo {
  display: flex;
  align-items: center;
}

.logo-img {
  width: 150px;   /* ajusta el tamaño según necesites */
  height: auto;   /* mantiene la proporción */
  object-fit: contain;
}


.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
}

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

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

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

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

.nav-cta {
  display: flex;
  gap: var(--spacing-md);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.mobile-menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  margin: 3px 0;
  transition: var(--transition-fast);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--border-radius-lg);
  font-family: var(--font-primary);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  font-size: var(--font-size-base);
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-purple);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: var(--border-primary);
}

.btn-outline:hover {
  background: var(--gradient-primary);
  color: white;
  transform: translateY(-2px);
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--font-size-lg);
}

.btn-sm {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: var(--bg-primary);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 20%, rgba(79, 70, 229, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(124, 58, 237, 0.1) 0%, transparent 50%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  animation: fadeInUp 1s ease-out;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: var(--spacing-lg);
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
  font-weight: var(--font-weight-normal);
}

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

/* Cards */
.card {
  background: var(--bg-card);
  border: var(--border-secondary);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-2xl);
  backdrop-filter: blur(10px);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition-normal);
}

.card:hover {
  transform: translateY(-8px);
  border-color: rgba(79, 70, 229, 0.5);
  box-shadow: var(--shadow-glow);
}

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

.card-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-2xl);
  color: white;
}

.card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.card-description {
  color: var(--text-muted);
  line-height: 1.7;
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid-cols-1 {
  grid-template-columns: 1fr;
}

.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.fade-in-up {
  animation: fadeInUp 0.8s ease-out;
}

.fade-in {
  animation: fadeIn 0.8s ease-out;
}

/* Scroll animations */
.scroll-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition-slow);
}

.scroll-animate.animated {
  opacity: 1;
  transform: translateY(0);
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: var(--border-secondary);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

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

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: var(--spacing-sm);
}

.footer-section ul li a {
  color: var(--text-muted);
  transition: var(--transition-normal);
}

.footer-section ul li a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  border-top: var(--border-secondary);
  padding-top: var(--spacing-xl);
  text-align: center;
  color: var(--text-muted);
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .section {
    padding: var(--spacing-2xl) 0;
  }
  
  .navbar {
    max-height: 60px
  }
  
  .card {
    padding: var(--spacing-lg);
  }
}
@media (max-width: 375px) {
  .section {
    padding: var(--spacing-xl) 0; /* menos padding que en 480px */
  }

  .navbar {
    max-height: 55px; /* un poco más compacto */
  }

  .card {
    padding: var(--spacing-md); /* menos padding interno */
  }

  .logo-img {
    height: 32px; /* logo más pequeño para móviles muy pequeños */
    width: auto;
  }
}