.flasher-project { margin: 1.6rem 0; }
.flash-btn {
  font: inherit;
  background: #0d0d0d;
  color: var(--accent, #00ff9c);
  border: 1px solid var(--accent, #00ff9c);
  padding: 0.45rem 1.15rem;
  border-radius: 3px;
  cursor: pointer;
}
.flash-btn:hover { background: var(--accent, #00ff9c); color: #0a0a0a; }
.flash-note { color: #ff6b6b; }
/* hide the fallback slots until the custom element upgrades */
esp-web-install-button:not(:defined) [slot="unsupported"],
esp-web-install-button:not(:defined) [slot="not-allowed"] { display: none; }