/* Tweaks panel */
.tweaks {
  position: fixed;
  bottom: 24px; right: 24px;
  background: var(--bg-elev-2);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  z-index: 200;
  min-width: 220px;
  font-size: 13px;
  box-shadow: 0 12px 36px rgba(0,0,0,0.4);
  backdrop-filter: blur(8px);
}
.tweaks[hidden] { display: none; }
.tweaks__head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.tweaks__head strong { font-size: 11px; font-family: var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-secondary); }
.tweaks__close { background: none; border: none; color: var(--text-secondary); font-size: 18px; line-height: 1; padding: 0; width: 20px; height: 20px; }
.tweaks__close:hover { color: var(--text-heading); }

.tweaks__row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-top: 1px solid var(--line-1);
  color: var(--text-body);
  font-size: 12.5px;
}
.tweaks__swatches { display: flex; gap: 6px; }
.tweaks__swatches button {
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  background: var(--sw);
  cursor: pointer;
  padding: 0;
  transition: transform 140ms var(--ease-std), box-shadow 140ms var(--ease-std);
}
.tweaks__swatches button:hover { transform: scale(1.1); }
.tweaks__swatches button.is-active { box-shadow: 0 0 0 2px var(--bg-elev-2), 0 0 0 3px var(--sw); }

.tweaks__segmented { display: flex; gap: 2px; }
.tweaks__segmented button {
  background: var(--bg-elev-1);
  border: 1px solid var(--line-2);
  border-radius: 4px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  padding: 3px 7px;
  cursor: pointer;
  transition: background 120ms, color 120ms, border-color 120ms;
}
.tweaks__segmented button:hover { color: var(--text-heading); }
.tweaks__segmented button.is-active {
  background: rgba(125,124,217,0.15);
  border-color: rgba(125,124,217,0.4);
  color: var(--accent-purple-2);
}