/* SCROLL & HEADER */
#cart-interface { width: 420px; max-width: 100%; overflow-y: auto; max-height: 80vh; scrollbar-width: thin; overscroll-behavior: contain; }
@media (max-width: 998px) { #cart-interface { width: min(calc(100vw - 20px), 420px); max-height: 75vh; } }
#cart-interface::-webkit-scrollbar { width: 0.375rem; }
#cart-interface::-webkit-scrollbar-thumb { background-color: var(--scrollbar-thumb); border-radius: 0.625rem; }

.popup-header { padding: var(--general-py, 1.125rem) var(--general-px, 1.5625rem); border-bottom: 0.0625rem solid var(--popup-border); position: sticky; top: 0; z-index: 50; background-color: var(--popup-bg); backdrop-filter: blur(0.625rem); -webkit-backdrop-filter: blur(0.625rem); margin-top: -0.0625rem; }
.btn-close-popup { width: 2rem; height: 2rem; display: flex; align-items: center; justify-content: center; border-radius: 50%; transition: all 0.2s; color: var(--text-muted); }
.btn-close-popup:hover { background-color: rgba(127,127,127,0.1); color: var(--text-color); }