Glassmorphism
Card viền sáng nhẹ và mờ nền.
.glass-card {
background: rgba(18, 24, 43, 0.6);
border: 1px solid rgba(99, 102, 241, 0.15);
border-radius: 12px;
backdrop-filter: blur(10px);
}
.btn-primary {
background: linear-gradient(135deg, #6366f1, #4f46e5);
box-shadow: 0 0 10px rgba(99, 102, 241, 0.3);
border-radius: 6px;
color: #fff;
transition: all 0.2s;
}