@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Outfit:wght@400;500;700;800&display=swap');

:root {
  /* Color Palette */
  --bg-dark: #0f172a;
  --bg-darker: #020617;
  --bg-card: rgba(30, 41, 59, 0.4);
  
  --accent-primary: #3b82f6; /* Electric Blue */
  --accent-secondary: #60a5fa;
  --accent-glow: rgba(59, 130, 246, 0.5);
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  
  --border-light: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(59, 130, 246, 0.3);
  
  /* Typography */
  --font-body: 'Inter', sans-serif;
  --font-heading: 'Outfit', sans-serif;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-darker);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: radial-gradient(circle at 15% 50%, rgba(59, 130, 246, 0.08), transparent 25%),
                    radial-gradient(circle at 85% 30%, rgba(59, 130, 246, 0.05), transparent 25%);
  background-attachment: fixed;
}

/* Glassmorphism Utilities */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.glass-panel:hover {
  transform: translateY(-5px);
  border-color: var(--border-accent);
  box-shadow: 0 10px 40px var(--accent-glow);
}

/* Typography Classes */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.text-gradient {
  background: linear-gradient(135deg, var(--text-main) 0%, var(--accent-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--text-muted);
  font-size: 1.125rem;
  font-weight: 300;
}

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

nav {
  padding: 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-light);
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text-main);
}

.logo span {
  color: var(--accent-primary);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

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

/* Hero Section */
.hero {
  padding: 8rem 0 6rem 0;
  text-align: center;
  position: relative;
}

.hero h1 {
  font-size: 4.5rem;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero p {
  max-width: 600px;
  margin: 0 auto 3rem auto;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  font-family: var(--font-heading);
}

.btn-primary {
  background: var(--accent-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
  background: var(--accent-secondary);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-light);
}

.btn-secondary:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 4rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 4rem;
}

/* Article Styles for Laboratorio */
.article-header {
  margin-bottom: 4rem;
  text-align: center;
}

.article-section {
  margin-bottom: 3rem;
  position: relative;
  padding-left: 2rem;
  border-left: 2px solid var(--border-light);
}

.article-section:hover {
  border-left-color: var(--accent-primary);
}

.article-section h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--accent-secondary);
}

.article-section ul {
  list-style-type: none;
}

.article-section li {
  margin-bottom: 0.5rem;
  position: relative;
  padding-left: 1.5rem;
}

.article-section li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent-primary);
}

/* Footer */
footer {
  margin-top: 6rem;
  padding: 3rem 0;
  border-top: 1px solid var(--border-light);
  text-align: center;
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 3rem; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}