[data-theme="dark"] .card{box-shadow:0 4px 20px rgba(0,0,0,0.3);border:1px solid var(--border)}[data-theme="dark"] .navbar{background:rgba(9,9,11,0.95);backdrop-filter:blur(10px)}[data-theme="dark"] .hero{background:linear-gradient(135deg,var(--background) 0%,#0a0d12 100%)}