/* Keep the existing YTMP4 form, typography, theme and conversion controls. */
.platform-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;padding:6px;margin:0 0 14px;background:var(--surface);border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow)}
.platform-tab{display:flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:11px 10px;border-radius:10px;border:1px solid transparent;background:transparent;color:var(--muted);font-size:13px;font-weight:650;white-space:nowrap}
.platform-tab svg{width:20px;height:20px}
.platform-tab:hover{background:var(--subtle);color:var(--ink)}
.platform-tab[aria-selected="true"]{background:var(--blue-soft);border-color:var(--line);color:var(--blue)}
.platform-tab:focus-visible{outline:3px solid var(--blue);outline-offset:1px}
.platform-tab:disabled{cursor:wait}
#platform-name{color:var(--ink)}
#platform-hint{display:block;margin-bottom:4px}
.mode-service-hint{font-size:12px;line-height:1.65;color:var(--red);margin:14px 0 0}
.job-platform{display:block;font-size:11px;color:var(--muted);line-height:1.5;margin:4px 0 0}
@media(max-width:540px){.platform-tabs{grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;padding:5px;border-radius:13px}.platform-tab{flex-direction:column;gap:3px;font-size:11px;min-height:52px;padding:7px 3px;white-space:normal}.platform-tab svg{width:17px;height:17px}}