.topviet-form .tf-row{margin-bottom:12px}
.topviet-form .grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}
.topviet-form .tf-multi{display:flex;gap:6px;margin-top:6px}
.topviet-form .btn-add,.topviet-form .btn-del{padding:0 8px}
.tv-counter{margin-top:6px;font-size:13px}
/* Modal */
.tv-modal{position:fixed;inset:0;background:rgba(0,0,0,.35);display:none;align-items:center;justify-content:center;z-index:9999}
.tv-modal-box{background:#fff;padding:20px;border-radius:12px;width:min(90vw,560px);min-width:300px;box-shadow:0 20px 60px rgba(0,0,0,.2)}
.tv-modal-body{display:flex;flex-direction:column;gap:8px;align-items:center;justify-content:center;text-align:center}
.spinner{width:16px;height:16px;border:2px solid #ccc;border-top-color:#0D47A1;border-radius:50%;display:inline-block;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}