.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.span-2 { grid-column: 1 / -1; }
.surface { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); }