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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  min-height: 100vh;
  color: #e8e8e8;
  line-height: 1.6;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* Header */
.header {
  text-align: center;
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo-section {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.logo-emoji {
  font-size: 2.5rem;
}

.header h1 {
  font-size: 2rem;
  font-weight: 700;
  color: #ffffff;
}

.tagline {
  color: #94a3b8;
  font-size: 1.1rem;
  margin-top: 0.5rem;
}

/* Sections */
section {
  margin-bottom: 2.5rem;
}

section h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #3b82f6;
  display: inline-block;
}

/* Intro */
.intro p {
  margin-bottom: 1rem;
  color: #cbd5e1;
  font-size: 1.05rem;
}

.intro strong {
  color: #ffffff;
}

/* Resource Grid */
.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.resource-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 1.25rem;
  transition: transform 0.2s, background 0.2s;
}

.resource-card:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.08);
}

.resource-icon {
  font-size: 1.75rem;
  display: block;
  margin-bottom: 0.5rem;
}

.resource-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 0.5rem;
}

.resource-card p {
  font-size: 0.9rem;
  color: #94a3b8;
}

/* Featured */
.featured-item {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(147, 51, 234, 0.15) 100%);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 12px;
  padding: 1.5rem;
  position: relative;
}

.featured-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: #3b82f6;
  color: white;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.featured-item h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.5rem;
}

.featured-item p {
  color: #cbd5e1;
  font-size: 0.95rem;
}

/* Research List */
.research-list {
  list-style: none;
}

.research-list li {
  padding: 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-left: 3px solid #3b82f6;
  margin-bottom: 0.75rem;
  border-radius: 0 8px 8px 0;
}

.research-list li strong {
  display: block;
  color: #ffffff;
  margin-bottom: 0.25rem;
}

.research-list li span {
  color: #94a3b8;
  font-size: 0.9rem;
}

/* Link Buttons */
.link-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  color: #ffffff;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s;
}

.link-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

/* Footer */
.footer {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 1rem;
}

.footer p {
  color: #64748b;
  font-size: 0.9rem;
  font-style: italic;
}

/* Responsive */
@media (max-width: 600px) {
  .header h1 {
    font-size: 1.5rem;
  }
  
  .logo-emoji {
    font-size: 2rem;
  }
  
  .resource-grid {
    grid-template-columns: 1fr;
  }
  
  .link-buttons {
    flex-direction: column;
  }
  
  .link-btn {
    justify-content: center;
  }
}