.echo {
  --ink: #14161f;
  --paper: #fdfcf7;
  --rule: #bfdfff;
  --tile: #f2efe4;
  --lit: #ffd75e;
  --accent: #2f6f5e;
  --wrong: #a33a2c;
  --muted: #6d6a5e;
 
  max-width: 32rem;
  margin: 0 auto;
  padding: 1.5rem 2.5rem 2rem;
  color: var(--ink);
  /*background: var(--paper);
  border: 1px solid var(--rule);*/
  border-radius: 10px;
  font: 400 1rem/1.5 ui-sans-serif, system-ui, "Segoe UI", Roboto, sans-serif;
  text-align: center;
}
.echo * { box-sizing: border-box; }
 
.echo .sub { margin: 0 0 1.25rem; color: var(--muted); }
 
.echo-meta {
  display: flex; justify-content: center; gap: 2.5rem;
  padding: .75rem 0; margin-bottom: 1.25rem;
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  font-variant-numeric: tabular-nums;
}
.echo-meta div { font-size: .75rem; color: var(--muted); }
.echo-meta strong { display: block; font-size: 1.65rem; font-weight: 700; line-height: 1.1; color: var(--ink); }
 
.echo-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: .6rem;
  margin-bottom: 1rem;
}
.echo-tile {
  aspect-ratio: 1; display: grid; place-items: center;
  font-size: clamp(2.9rem, 14vw, 4rem);
  line-height: 1;
  background: var(--tile); border: 1px solid var(--rule); border-radius: 12px;
  cursor: pointer; user-select: none; -webkit-tap-highlight-color: transparent;
  transition: transform .09s ease, background-color .09s ease, box-shadow .09s ease;
}
.emoji-echo {font-size: 2.2rem};
.echo-tile:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.echo-tile.lit { background: var(--lit); transform: scale(1.06); box-shadow: 0 0 0 3px rgba(255,215,94,.35); }
.echo-tile.bad { background: #f0c8c1; border-color: var(--wrong); }
.echo-grid[data-locked="true"] .echo-tile { cursor: default; }
 
.echo-status { min-height: 1.6rem; margin: 0 0 1rem; font-size: .95rem; font-weight: 600; }
.echo-status.watch { color: var(--muted); }
.echo-status.go { color: var(--accent); }
.echo-status.over { color: var(--wrong); }
 
.echo button {
  font: inherit; font-size: .95rem; padding: .6rem 1.4rem; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--ink); background: var(--ink); color: var(--paper);
}
.echo button.ghost { background: transparent; color: var(--muted); border-color: var(--rule); font-size: .8rem; padding: .4rem .8rem; }
.echo button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.echo-foot { margin-top: 1rem; }
 
@media (prefers-reduced-motion: reduce) {
  .echo-tile { transition: background-color .09s ease; }
  .echo-tile.lit { transform: none; }
}