/* 讓整個相機區域全螢幕 & 疊圖層 */
html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

/* 外層包 video / canvas / tagLayer */
#cameraWrapper {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

/* 讓 video / canvas 填滿畫面 */
#videoElement,
#landmarksCanvas {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 多人名牌所在的圖層 */
#tagLayer {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  pointer-events: none; /* 不擋住點擊 */
}

/* 每一個人的名牌 */
.user-tag {
  position: absolute;
  transform: translate(-50%, -100%);
  background: transparent !important;
  border-radius: 0 !important;
  padding: 0 !important;
  color: #fff;
  font-size: 12px;
  border: none !important;
  white-space: nowrap;
  box-shadow: none !important;
}
.user-tag .name {
  font-weight: bold;
}
.user-tag .nickname {
  font-size: 11px;
  opacity: 0.8;
}

/* 你原本的 userCard 想固定在右下角之類可以像這樣 */
#userCard {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 220px;
  background: rgba(0, 0, 0, 0.75);
  color: #fff;
  border-radius: 12px;
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(6px);
  display: none; /* 先隱藏，需要時再用 JS 顯示 */
}
#userCard img#avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  margin: 0 auto 8px;
}
#userCard h2 {
  font-size: 16px;
  margin: 0 0 4px;
  text-align: center;
}
#userCard p {
  margin: 0;
  font-size: 12px;
  line-height: 1.4;
}