/* Tweaks panel UI */
.tweaks-panel {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 320px;
  background: var(--bg-elev);
  border: 1px solid var(--line-strong);
  z-index: 100;
  font-family: var(--font-sans);
  box-shadow: 0 24px 48px rgba(0,0,0,0.4);
}
.tweaks-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-muted);
}
.tweaks-head button {
  background: transparent;
  border: 0;
  color: var(--fg-muted);
  font-size: 18px;
  line-height: 1;
}
.tweaks-body {
  padding: 18px;
  display: grid;
  gap: 18px;
}
.tweak-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--fg-dim);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.swatches { display: flex; gap: 8px; }
.swatch {
  width: 32px;
  height: 32px;
  border: 2px solid var(--line);
  cursor: pointer;
  padding: 0;
}
.swatch.active { border-color: var(--fg); }
.seg {
  display: flex;
  border: 1px solid var(--line);
}
.seg button {
  flex: 1;
  background: transparent;
  border: 0;
  border-right: 1px solid var(--line);
  padding: 10px;
  color: var(--fg-muted);
  font-size: 12px;
  font-family: var(--font-sans);
}
.seg button:last-child { border-right: 0; }
.seg button.active { background: var(--accent); color: var(--accent-fg); }