/* Web camera layer: live video is product content; controls use the SN camera viewport rules. */
.camera-viewport {
  isolation: isolate;
  background: var(--sn-background-secondary);
}

.camera-feed,
.camera-vignette {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.camera-feed {
  z-index: 0;
  display: block;
  object-fit: cover;
  background: var(--sn-background-secondary);
}

.camera-vignette {
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(180deg, rgb(var(--sn-ink-rgb) / .22), transparent 26%, transparent 70%, rgb(var(--sn-ink-rgb) / .34));
}

.camera-viewport > :not(.camera-feed):not(.camera-vignette) {
  z-index: 2;
}

/* 靜態取景框（四角，不移動、不閃動） */
.viewfinder {
  position: absolute;
  inset: 17% 9% 24%;
  pointer-events: none;
  border: 2px solid rgb(var(--sn-background-rgb) / .88);
  border-radius: 24px;
  box-shadow: 0 0 0 1px rgb(var(--sn-ink-rgb) / .24);
}

.viewfinder::before,
.viewfinder::after {
  position: absolute;
  width: 28px;
  height: 28px;
  content: '';
  border-color: var(--sn-success);
  border-style: solid;
}

.viewfinder::before {
  top: -2px;
  left: -2px;
  border-width: 3px 0 0 3px;
  border-radius: 18px 0 0;
}

.viewfinder::after {
  right: -2px;
  bottom: -2px;
  border-width: 0 3px 3px 0;
  border-radius: 0 0 18px;
}

/* 舊式掃描線：停用動畫，只保留靜態框 */
.scan-guide {
  position: absolute;
  inset: 17% 9% 24%;
  pointer-events: none;
  border: 2px solid rgb(var(--sn-background-rgb) / .88);
  border-radius: 24px;
  box-shadow: 0 0 0 1px rgb(var(--sn-ink-rgb) / .24);
}

.scan-guide span {
  display: none;
}

.scan-guide--processing span {
  animation: none;
}

.camera-action-tray {
  position: absolute;
  right: 18px;
  bottom: 18px;
  left: 18px;
  display: grid;
  gap: 10px;
  padding: 14px;
  color: var(--sn-ink);
  background: rgb(var(--sn-background-rgb) / .9);
  border-radius: var(--sn-matte-radius);
  box-shadow: var(--sn-matte-shadow), var(--sn-matte-highlight);
  backdrop-filter: blur(14px);
}

.camera-action-tray p,
.camera-wait {
  margin: 0;
  font-size: 14px;
  font-weight: 650;
  line-height: 1.4;
}

.camera-wait { color: var(--sn-blue); }

.scan-result .scan-again {
  display: block;
  width: 100%;
  padding: 10px 0 0;
  color: var(--sn-blue);
  text-align: center;
}

.scan-result__test-note {
  margin-bottom: 5px;
  color: var(--sn-blue);
}

.scan-result__evidence {
  margin: 0 0 12px;
  color: var(--sn-blue);
  font-size: 13px;
  font-weight: 650;
  line-height: 1.35;
}

.camera-page__bottom span {
  display: block;
  margin-top: 2px;
  color: rgb(var(--sn-background-rgb) / .75);
  font-size: 12px;
}

.button--loading { opacity: .58; }

/* 快門按鈕與拍攝指引 */
.camera-shutter-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
}

.button--shutter {
  width: 68px;
  height: 68px;
  padding: 0;
  border-radius: 50%;
  border: 3px solid var(--sn-ink);
  background: #fff;
  color: var(--sn-ink);
  box-shadow: var(--sn-matte-shadow), var(--sn-matte-highlight);
}
.button--shutter .icon { width: 30px; height: 30px; }
.button--shutter:hover { background: var(--sn-background-secondary); }

.camera-shutter-row .button--secondary {
  min-height: 44px;
  border-radius: 999px;
  font-size: 13px;
}

.camera-reading {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  gap: 10px;
  padding: 28px;
  color: var(--sn-ink);
}
.camera-reading .icon { width: 30px; height: 30px; margin: auto; color: var(--sn-blue); }
.camera-reading p { margin: 0; font-weight: 650; }

/* 餐牌／物品模式切換 */
.mode-switch {
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  padding: 3px;
  border-radius: 999px;
  background: rgb(var(--sn-ink-rgb) / .68);
  backdrop-filter: blur(10px);
}
.mode-switch button {
  border: 0;
  background: transparent;
  color: var(--sn-background);
  font-weight: 700;
  font-size: 13px;
  padding: 7px 16px;
  border-radius: 999px;
}
.mode-switch button.is-active { background: var(--sn-blue); color: #fff; }

/* 物品視覺查詢候選 */
.item-candidates {
  position: absolute;
  right: 6%;
  bottom: 12%;
  left: 6%;
  display: grid;
  gap: 10px;
  padding: 12px;
  background: rgb(var(--sn-background-rgb) / .92);
  border-radius: var(--sn-matte-radius);
  box-shadow: var(--sn-matte-shadow), var(--sn-matte-highlight);
}
.item-candidates__title {
  margin: 0;
  color: var(--sn-ink);
  font-size: 14px;
  font-weight: 750;
}
.item-candidates__list { display: grid; gap: 8px; }
.item-candidate {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  border: 0;
  border-radius: 18px;
  padding: 8px;
  background: rgba(215, 220, 221, .7);
  color: var(--sn-ink);
  text-align: left;
}
.item-candidate img {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  object-fit: cover;
  background: var(--sn-background-secondary);
}
.item-candidate__body { display: flex; flex-direction: column; gap: 2px; }
.item-candidate__body strong { font-size: 15px; }
.item-candidate__body span { color: var(--sn-blue); font-size: 13px; }
.item-candidate__match { margin-left: auto; color: var(--sn-success); font-size: 12px; font-weight: 700; }

@media (max-width: 700px) {
  .scan-guide { inset: 14% 7% 27%; }
  .viewfinder { inset: 14% 7% 27%; }
  .camera-action-tray { right: 12px; bottom: 12px; left: 12px; }
  .camera-page .scan-result { top: 39%; }
}

@media (prefers-reduced-motion: reduce) {
  .scan-guide--processing span { animation: none; }
}