/* Deep Space Theme — Tech-forward */
body.theme-deep_space {
  --color-bg-primary: #0a0f1e;
  --color-bg-section: #0f1629;
  --color-bg-card: #141d35;
  --color-text-primary: #e8edf5;
  --color-text-secondary: #8892a8;
  --color-text-muted: #4a5568;
  --color-accent: #3b82f6;
  --color-accent-hover: #60a5fa;
  --color-accent-glow: rgba(59, 130, 246, 0.15);
  --color-border: rgba(255, 255, 255, 0.05);
  --color-border-hover: rgba(59, 130, 246, 0.2);
  --color-overlay: rgba(10, 15, 30, 0.8);
  --radius-section: 0px;
  --radius-card: 8px;
  --font-weight-heading: 400;
  --transition-smooth: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Scroll reveal — precise slide up */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.shown { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* Card hover — blue glow lift */
.card-hover { transition: var(--transition-smooth); }
.card-hover:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-hover);
  box-shadow: 0 16px 40px rgba(59, 130, 246, 0.12);
}

/* Gradient text — electric blue */
.gradient-text {
  background: linear-gradient(135deg, var(--color-accent) 0%, #93c5fd 50%, var(--color-accent) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

/* Glass nav — deep blue */
.glass-nav {
  background: rgba(10, 15, 30, 0.88);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(59, 130, 246, 0.06);
}

/* Glow button — blue pulse */
.glow-btn { position: relative; overflow: hidden; }
.glow-btn::after {
  content: ''; position: absolute; inset: -2px;
  background: linear-gradient(135deg, transparent 25%, var(--color-accent-glow) 50%, transparent 75%);
  opacity: 0; transition: opacity 0.35s;
}
.glow-btn:hover::after { opacity: 1; }

/* Marquee */
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.marquee-track { animation: marquee 28s linear infinite; }
.marquee-track:hover { animation-play-state: paused; }

/* Scrollbar — blue accent */
body.theme-deep_space::-webkit-scrollbar { width: 6px; }
body.theme-deep_space::-webkit-scrollbar-track { background: var(--color-bg-primary); }
body.theme-deep_space::-webkit-scrollbar-thumb { background: #2a3a5c; border-radius: 3px; }
body.theme-deep_space::-webkit-scrollbar-thumb:hover { background: var(--color-accent); }