.button{border-radius:var(--radius-control);min-height:46px;color:var(--color-primary-text);background:var(--color-primary);cursor:pointer;text-align:center;border:1px solid #0000;justify-content:center;align-items:center;padding:.7rem 1.1rem;font-weight:700;line-height:1.1;text-decoration:none;display:inline-flex}.button:hover:not(:disabled){filter:brightness(1.05)}.button:disabled{cursor:default;opacity:.45}.button--secondary{border-color:var(--color-line);color:var(--color-text);background:var(--color-surface)}.button--wide{width:100%}.button-row{flex-wrap:wrap;gap:.75rem;display:flex}.button-row>*{flex:12rem}.button-row--sticky{bottom:max(1rem, var(--tg-viewport-content-safe-area-inset-bottom,0px));z-index:3;border:1px solid var(--color-line);border-radius:var(--radius-card);background:color-mix(in srgb, var(--color-page) 88%, transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);padding:.7rem;position:sticky}.button--danger{color:#fff;background:var(--color-danger)}.button--danger-text{color:var(--color-danger)}@media (width<=540px){.button-row{flex-direction:column}.button-row>*{flex-basis:auto;width:100%}}