/* Futuristic Black Theme */
.theme-black {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;
  --accent-primary: #00ffff;
  --accent-secondary: #ff00ff;
  --accent-tertiary: #ffff00;
  --card-bg: rgba(17, 17, 17, 0.9);
  --card-border: rgba(255, 255, 255, 0.1);
  --shadow-color: rgba(0, 0, 0, 0.5);
  --glow-color: rgba(0, 255, 255, 0.4);
}

.theme-black {
  background: linear-gradient(180deg, #0a0a0a 0%, #111111 50%, #0d0d0d 100%);
  color: var(--text-primary);
}

.theme-black::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(0, 255, 255, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 0, 255, 0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.theme-black .hero {
  background: linear-gradient(180deg, rgba(0, 255, 255, 0.03) 0%, transparent 100%);
}

.theme-black .logo-text {
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 50%, var(--accent-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 20px rgba(0, 255, 255, 0.5));
}

.theme-black .article-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 30px var(--shadow-color);
  position: relative;
}

.theme-black .article-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(0, 255, 255, 0.3), transparent, rgba(255, 0, 255, 0.3));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.theme-black .article-type {
  background: linear-gradient(135deg, rgba(0, 255, 255, 0.15) 0%, rgba(255, 0, 255, 0.15) 100%);
  color: var(--accent-primary);
  text-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
}

.theme-black .article-card:hover {
  box-shadow: 0 20px 60px var(--shadow-color),
              0 0 60px var(--glow-color),
              inset 0 0 30px rgba(0, 255, 255, 0.05);
}

.theme-black .article-card:hover::after {
  background: linear-gradient(135deg, rgba(0, 255, 255, 0.6), transparent, rgba(255, 0, 255, 0.6));
}

.theme-black .loading-spinner {
  border-color: var(--bg-tertiary);
  border-top-color: var(--accent-primary);
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.5);
}

.theme-black .theme-indicator {
  background: rgba(0, 255, 255, 0.1);
  color: var(--accent-primary);
  border: 1px solid rgba(0, 255, 255, 0.2);
}

.theme-black .theme-dot {
  background: var(--accent-primary);
  box-shadow: 0 0 15px var(--glow-color),
              0 0 30px var(--glow-color);
}

.theme-black .article-title {
  text-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

.theme-black ::selection {
  background: var(--accent-primary);
  color: #000;
}

.theme-black .footer-links a:hover {
  text-shadow: 0 0 10px var(--accent-primary);
}

/* Neon glow animation for black theme */
@keyframes neon-pulse {
  0%, 100% {
    box-shadow: 0 0 20px var(--glow-color);
  }
  50% {
    box-shadow: 0 0 40px var(--glow-color),
                0 0 60px var(--glow-color);
  }
}

.theme-black .logo-icon {
  filter: drop-shadow(0 0 10px rgba(0, 255, 255, 0.5));
}

.theme-black .status-badge {
  background: linear-gradient(135deg, rgba(0, 255, 255, 0.15) 0%, rgba(255, 0, 255, 0.15) 100%);
  color: var(--accent-primary);
  border: 1px solid rgba(0, 255, 255, 0.3);
}

.theme-black .status-pulse {
  background: var(--accent-primary);
  box-shadow: 0 0 12px var(--accent-primary);
}

.theme-black .articles-count {
  background: rgba(0, 255, 255, 0.15);
  color: var(--accent-primary);
}