body { background: #0b1220; color: #e8eefb; }
.card { background:#0f172a; border:1px solid #1e293b; }
.form-control, .form-select { background:#0b1220; border-color:#263043; color:#e8eefb; }
.table { color:#e8eefb; }
.badge { font-weight: 600; }
a { color:#7aa2ff; text-decoration:none; }
a:hover { text-decoration: underline; }
.qr-box { min-height: 280px; display:flex; align-items:center; justify-content:center; background:#0b1220; border:1px dashed #334155; border-radius:16px; }
.spinner { width:40px; height:40px; border:4px solid #334155; border-top-color:#7aa2ff; border-radius:50%; animation:spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }