body { margin: 0; min-height: 100vh; box-sizing: border-box; padding: var(--wb-space-5) var(--wb-space-4) var(--wb-space-7); }
[hidden] { display: none !important; }

.top { display: flex; align-items: center; gap: var(--wb-space-3); max-width: 560px; margin: 0 auto var(--wb-space-5); }
.brand { font: 600 var(--wb-text-lg)/1 var(--wb-font-mono); }

main.wb-card { max-width: 560px; margin: 0 auto; box-sizing: border-box; }
.stack { display: flex; flex-direction: column; gap: var(--wb-space-4); }
.stack > p { margin: 0; }
.field { display: flex; flex-direction: column; gap: var(--wb-space-2); }
.row { display: flex; gap: var(--wb-space-3); flex-wrap: wrap; }
.row > .wb-input { flex: 1; min-width: 0; }
.join { margin-top: var(--wb-space-5); padding-top: var(--wb-space-5); border-top: 1px solid var(--wb-border); }
.mono { font-family: var(--wb-font-mono); font-size: var(--wb-text-sm); }
.keys { margin-top: var(--wb-space-3); }
summary { cursor: pointer; font-size: var(--wb-text-sm); }

.drop {
  display: flex; flex-direction: column; gap: var(--wb-space-1); align-items: center; text-align: center;
  padding: var(--wb-space-6) var(--wb-space-4); border: 2px dashed var(--wb-border); border-radius: var(--wb-radius-card);
  cursor: pointer; transition: border-color 0.15s, background-color 0.15s;
}
.drop:hover, .drop.is-over { border-color: var(--wb-accent); background: color-mix(in srgb, var(--wb-accent) 8%, transparent); }
.drop:focus-within { outline: 2px solid var(--wb-fg); outline-offset: 2px; }
.drop.is-disabled { cursor: not-allowed; opacity: 0.55; }
.drop-title { font: 600 var(--wb-text-md)/1.3 var(--wb-font-mono); }
.xfer { display: flex; flex-direction: column; gap: var(--wb-space-2); }
.xfer-head { display: flex; gap: var(--wb-space-2); align-items: baseline; min-width: 0; }
.xfer-name { font-weight: 600; }
.xfer-foot { display: flex; justify-content: space-between; align-items: center; gap: var(--wb-space-3); font-size: var(--wb-text-sm); }
.xfer progress { width: 100%; height: 8px; appearance: none; border: 0; border-radius: var(--wb-radius-pill); overflow: hidden; background: var(--wb-input-bg); box-shadow: inset 0 0 0 1px var(--wb-border); }
.xfer progress::-webkit-progress-bar { background: transparent; }
.xfer progress::-webkit-progress-value { background: var(--wb-accent); border-radius: var(--wb-radius-pill); }
.xfer progress::-moz-progress-bar { background: var(--wb-accent); border-radius: var(--wb-radius-pill); }

.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

.offer { max-width: min(440px, calc(100vw - 2 * var(--wb-space-4))); box-sizing: border-box; color: var(--wb-fg); }
.offer::backdrop { background: color-mix(in srgb, var(--wb-bg) 60%, transparent); }
.offer-name { font-weight: 600; overflow-wrap: anywhere; }

@media (prefers-reduced-motion: reduce) { .drop { transition: none; } }