/* Loader title placement: top-center above the ring */
#loaderHeader{
  position: absolute;
  left: 50%;
  top: 18%;
  transform: translateX(-50%);
  text-align: center;
  pointer-events: none;
  width: min(900px, 92vw);
  z-index: 2; /* ✅ ensure above SVG */
}

#loaderHeader .t1{
  font-family: "Open Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  font-size: clamp(16px, 2.2vw, 18px);
  letter-spacing: 0.5px;
  color: rgba(255,255,255,0.92);
  line-height: 1.25;
}

#loaderHeader .t2{
  margin-top: 10px;
  font-family: "Open Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  font-size: clamp(12px, 1.6vw, 16px);
  letter-spacing: 0.4px;
  color: rgba(255,255,255,0.70);
  line-height: 1.2;
}

#loaderHeader .t2,
#loaderHeader .t1,
#loaderText {
  font-family: "Open Sans", system-ui, -apple-system, "Segoe UI", Roboto, Arial,
               "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
}




html, body{
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: #000;
  overflow: hidden;
}

/* 讓 p5 canvas 等比縮放且置中 */
:root{
  --p5scale: 1;
}

#p5c{
  position: absolute;
  left: 50%;
  top: 50%;

  /* 固定作品設計尺寸（不要改） */
  width: 1920px;
  height: 1080px;

  /* 等比縮放 + 置中 */
  transform: translate(-50%, -50%) scale(var(--p5scale));
  transform-origin: center center;

  /* 避免 canvas 被當成 inline 造成奇怪行高 */
  display: block;
}