/* ============================================================
   Fourier Draw - layout

   The stage is the hero. Controls sit under it in a tidy grid:
   one column on a phone, centred and capped on wide screens.
   ============================================================ */

.fd-stage { cursor: crosshair; }
.fd-stage:focus-visible { outline-offset: -3px; }
.fd-hint { color: var(--text-dim); }

.fd-controls {
  display: grid;
  gap: .85rem;
  width: 100%;
  max-width: 760px;
  margin-inline: auto;
  padding: 1rem clamp(1rem, 4vw, 1.25rem) 0;
}

.fd-row { display: grid; gap: .5rem; min-width: 0; }
.fd-run     { grid-template-columns: 1.2fr 1fr 1fr; }
.fd-presets { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.fd-controls .btn,
.fd-controls .chip {
  min-height: var(--tap);
  padding-inline: .4rem;
  min-width: 0;
}
.fd-controls .chip { font-size: .74rem; letter-spacing: .04em; }

.fd-sliders { display: grid; gap: .35rem 1.5rem; }
.fd-slider {
  display: grid;
  gap: .1rem;
  font-size: .9rem;
  color: var(--text-dim);
  min-width: 0;
}
.fd-slider span { display: flex; justify-content: space-between; gap: .5rem; }
.fd-slider output { font-family: var(--font-mono); color: var(--text); }
.fd-slider input {
  width: 100%;
  height: var(--tap);
  margin: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

.fd-try {
  border-left: 3px solid var(--hot);
  background: var(--surface);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: .7rem .9rem;
  color: #C9CEE2;
}

@media (min-width: 700px) {
  .fd-sliders { grid-template-columns: 1fr 1fr; }
}