:root {
  --bg-color: #0b0f19;
  --surface-color: #121826;
  --surface-border: #1f293d;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-purple: #8b5cf6;
  --accent-amber: #f59e0b;
  --play-green: #00875a;
  --play-green-hover: #00a36c;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.site-header {
  border-bottom: 1px solid var(--surface-border);
  background: rgba(11, 15, 25, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: #fff;
  text-decoration: none;
}

.brand-accent {
  color: var(--accent-cyan);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #fff;
}

.nav-cta {
  background: var(--surface-border);
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  color: #fff !important;
}

.hero-section {
  padding: 4.5rem 1.5rem 2.5rem;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.hero-pill {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  background: rgba(6, 182, 212, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.hero-section h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero-subtext {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 2.5rem;
}

.filter-wrapper {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-btn {
  background: var(--surface-color);
  color: var(--text-secondary);
  border: 1px solid var(--surface-border);
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  border-color: #384561;
  color: #fff;
}

.filter-btn.active {
  background: var(--accent-cyan);
  color: #0b0f19;
  border-color: var(--accent-cyan);
}

.catalog-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem 6rem;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.app-card {
  background: var(--surface-color);
  border: 1px solid var(--surface-border);
  border-radius: 16px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.app-card:hover {
  transform: translateY(-4px);
  border-color: #334155;
}

.card-badge {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.badge-ai { background: rgba(6, 182, 212, 0.15); color: var(--accent-cyan); }
.badge-arcade { background: rgba(139, 92, 246, 0.15); color: var(--accent-purple); }
.badge-focus { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); }
.badge-heritage { background: rgba(245, 158, 11, 0.15); color: var(--accent-amber); }

.card-header {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1rem;
}

.app-icon {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  object-fit: cover;
  background-color: #1e293b;
}

.app-category-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  font-weight: 600;
  display: block;
}

.app-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
}

.app-summary {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.app-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}

.tag {
  background: #1e293b;
  color: #cbd5e1;
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.play-btn {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  background: var(--play-green);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  text-align: center;
  transition: background 0.2s ease;
}

.play-btn:hover {
  background: var(--play-green-hover);
}

.site-footer {
  border-top: 1px solid var(--surface-border);
  padding: 2.5rem 1.5rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.footer-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  margin-left: 1.25rem;
}

.footer-nav a:hover {
  color: #fff;
}

@media (max-width: 640px) {
  .hero-section { padding-top: 3rem; }
  .nav-container { flex-direction: column; gap: 1rem; }
  .catalog-grid { grid-template-columns: 1fr; }
}