:root {
  --rs-primary: #2563eb;
  --rs-dark: #0f172a;
  --rs-card-bg: #ffffff;
  --rs-border: #e2e8f0;
}

body {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  color: #334155;
  background-color: #f8fafc;
  overflow-x: hidden;
  letter-spacing: -0.01em;
}

.font-mono {
  font-family: 'JetBrains Mono', monospace;
}

/* Hero Section */
.blog-hero {
  background: radial-gradient(circle at top center, rgba(37, 99, 235, 0.18) 0%, rgba(15, 23, 42, 0) 70%), #0f172a;
}

/* Glassmorphic Featured Spotlight Card */
.featured-card {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.9) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* Thumbnail Containers & Hover Effect */
.card-img-wrapper {
  position: relative;
  overflow: hidden;
  border-radius: 0.75rem 0.75rem 0 0;
}

.card-img-wrapper img {
  transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1);
  object-fit: cover;
  width: 100%;
  height: 100%;
}

.article-card:hover .card-img-wrapper img {
  transform: scale(1.06);
}

.article-card {
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--rs-border);
  background: var(--rs-card-bg);
  will-change: transform, opacity;
}

.article-card:hover {
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  border-color: rgba(37, 99, 235, 0.3);
}

.article-card .card-title {
  transition: color 0.2s ease;
}

.article-card:hover .card-title {
  color: var(--rs-primary) !important;
}

/* Floating Image Overlay Badges */
.badge-overlay {
  position: absolute;
  top: 1rem;
  left: 1rem;
  z-index: 2;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* Topic Pill Filters */
.topic-btn {
  font-weight: 500;
  transition: all 0.2s ease;
}

.topic-btn.active {
  background-color: var(--rs-primary) !important;
  color: #ffffff !important;
  border-color: var(--rs-primary) !important;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.author-img {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.newsletter-box {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* GSAP Reveal Helper */
.gsap-reveal {
  opacity: 0;
}