body {
  margin: 0; background: #0f1115; color: #e8e8e8;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  display: flex; flex-direction: column; align-items: center;
  padding: 16px 12px 40px;
}
.portfolio-back {
  --portfolio-back-color: #6b7280;
  --portfolio-back-color-hover: #9aa0a8;
  align-self: flex-start;
  margin: 0 0 6px 2px;
}
h1 { font-size: 1.05rem; font-weight: 600; margin: 4px 0 2px; text-align: center; }
.subtitle { font-size: 0.76rem; color: #9aa0a8; margin-bottom: 10px; text-align: center; }

.modeToggle {
  display: flex; gap: 6px; margin-bottom: 12px;
  background: #1a1e26; border-radius: 10px; padding: 4px;
}
.modeToggle button {
  background: transparent; color: #9aa0a8; border: none;
  padding: 8px 14px; border-radius: 8px; font-size: 0.82rem;
  font-weight: 600; cursor: pointer; transition: background-color 0.15s ease, color 0.15s ease;
}
.modeToggle button:hover:not(.active) { background: #20242e; color: #c7cbd1; }
.modeToggle button.active { background: #2a2f3a; color: #fff; }

.stage { display: flex; flex-direction: column; align-items: center; width: 100%; }

.stageCanvas { width: 100%; max-width: 400px; }
#canvasWrap {
  width: 100%; aspect-ratio: 1/1;
  border-radius: 10px; overflow: hidden; background: #15181e;
  touch-action: none;
}
#canvasWrap canvas { display: block; width: 100%; height: 100%; cursor: grab; }
.hint { font-size: 0.7rem; color: #6b7280; margin-top: 6px; text-align: center; }

.panel { width: 100%; max-width: 400px; margin-top: 12px; }

@media (min-width: 900px) {
  .stage { flex-direction: row; align-items: flex-start; justify-content: center; gap: 28px; }
  .stageCanvas { max-width: 520px; }
  .panel { max-width: 440px; margin-top: 0; }
}
.row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; gap: 10px; }
.row label { font-size: 0.85rem; color: #c7cbd1; min-width: 84px; }
input[type=range] { flex: 1; }
.val { font-variant-numeric: tabular-nums; font-size: 0.85rem; min-width: 34px; text-align: right; color: #fff; }

.info {
  background: #1a1e26; border-radius: 8px; padding: 10px 14px;
  font-size: 0.8rem; color: #c7cbd1; line-height: 1.5; margin-top: 8px;
}
.info b { color: #fff; }

.buttons { display: flex; gap: 8px; margin-top: 4px; }
button.ctl {
  flex: 1; background: #2a2f3a; color: #fff; border: none; border-radius: 8px;
  padding: 10px; font-size: 0.85rem; font-weight: 600; cursor: pointer;
  transition: background-color 0.15s ease;
}
button.ctl:hover { background: #333a48; }
button.ctl:active { background: #3a4150; }
button.ctl:disabled {
  background: #20242e; color: #5a6170; cursor: default; pointer-events: none;
}

#spectrum {
  display: block; width: 100%; margin-top: 8px;
  background: #15181e; border-radius: 8px; touch-action: manipulation;
}
.capBadge {
  font-size: 0.7rem; color: #6b7280; text-align: right; margin-top: 4px;
}