.shadertoy-channel-dialog {
  color: #ddd; background: #242424; border: 1px solid #606060;
  border-radius: 8px; padding: 20px; width: min(440px, calc(100vw - 64px));
  max-height: calc(100vh - 64px); overflow: auto;
}
.shadertoy-channel-dialog::backdrop { background: #000a; }
.shadertoy-channel-dialog h3 { margin: 0 0 12px; }
.shadertoy-channel-dialog p { font-size: 13px; line-height: 1.45; }
.shadertoy-channel-dialog label { display: grid; grid-template-columns: 80px 1fr; align-items: center; gap: 12px; margin: 12px 0; }
.shadertoy-channel-dialog select { min-width: 0; width: 100%; color: #eee; background: #333; padding: 6px; }
.shadertoy-channel-note { color: #aaa; }
.shadertoy-channel-sampling { margin: 12px 0; font-size: 13px; }
.shadertoy-channel-sampling summary { cursor: pointer; }
.shadertoy-sampling-row { display: grid; grid-template-columns: 80px 1fr 1fr; gap: 12px; align-items: end; margin: 10px 0; }
.shadertoy-sampling-row > span { align-self: start; grid-row: span 2; padding-top: 22px; }
.shadertoy-channel-dialog .shadertoy-sampling-row label { display: grid; grid-template-columns: 1fr; gap: 4px; margin: 0; }
.shadertoy-sampling-row select:disabled { opacity: .65; }
.shadertoy-package-channels { width: min(600px, calc(100vw - 64px)); }
.shadertoy-package-channels .shadertoy-sampling-row { grid-template-columns: minmax(160px, 1.6fr) 1fr 1fr; }
.shadertoy-package-channels .shadertoy-sampling-row > span { min-width: 0; padding-top: 0; }
.shadertoy-package-channels .shadertoy-sampling-row > span > select { margin-top: 6px; }
.shadertoy-package-channels .shadertoy-sampling-row small { display: block; font-weight: normal; opacity: .75; overflow-wrap: anywhere; margin-top: 6px; }
.shadertoy-texture-tools { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
.shadertoy-texture-tools button { font-size: 11px; padding: 3px 6px; }
.shadertoy-texture-tools[hidden], .shadertoy-package-channels .shadertoy-sampling-row small[hidden] { display: none; }
@media (max-width: 560px) {
  .shadertoy-package-channels .shadertoy-sampling-row { grid-template-columns: 1fr 1fr; border-top: 1px solid #555; padding-top: 12px; }
  .shadertoy-package-channels .shadertoy-sampling-row > span { grid-column: 1 / -1; grid-row: auto; }
}
.shadertoy-channel-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }
.shadertoy-channel-actions button { padding: 7px 16px; }