html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ff4d1f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.bc {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
}

.bc__card {
  width: min(100%, 264px);
  background: #fff7e6;
  border-radius: 16px;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  padding: 12px 16px;
  border: 2px solid transparent;
}

.bc__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.bc__title {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  font-weight: 800;
  font-size: clamp(11px, 3.2vw, 13px);
  color: #17141a;
}

.bc__ico {
  width: 16px;
  height: 16px;
  color: #17141a;
}

.bc__state {
  background: rgba(23, 20, 26, 0.08);
  color: #17141a;
  border-radius: 999px;
  font-weight: 700;
  font-size: clamp(9px, 2.6vw, 10px);
  padding: 0 8px;
  line-height: 1.6;
}

.bc__bars {
  position: relative;
  margin-top: 8px;
  height: 64px;
  border-radius: 8px;
  overflow: hidden;
  background: repeating-linear-gradient(90deg, #17141a 0 2px, transparent 2px 4px), repeating-linear-gradient(90deg, #17141a 0 3px, transparent 3px 9px);
  background-position: 0 0, 3px 0;
}

.bc__beam {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 4px;
  visibility: hidden;
  background: linear-gradient(180deg, transparent, rgba(76, 212, 166, 0.95) 40%, rgba(23, 20, 26, 0.9) 55%, transparent);
  box-shadow: 0 0 8px rgba(76, 212, 166, 0.8);
}

.bc.is-scanning .bc__beam {
  visibility: visible;
  animation: bcBeamOnce 800ms ease-in-out;
}

@keyframes bcBeamOnce {
  0% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(60px);
  }
}
.bc__digits {
  margin: 8px 0 0;
  font-weight: 800;
  font-size: clamp(14px, 4.2vw, 18px);
  letter-spacing: 0.3em;
  color: #17141a;
  text-align: center;
}

.bc__foot {
  position: relative;
  display: flex;
  justify-content: center;
  margin-top: 8px;
  min-height: 30px;
}

.bc__btn {
  border: 0;
  cursor: pointer;
  background: #17141a;
  color: #fff7e6;
  border-radius: 999px;
  font-family: inherit;
  font-weight: 800;
  font-size: clamp(11px, 3vw, 12px);
  padding: 4px 20px;
  line-height: 1.4;
  transition: transform 140ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.bc__btn:active {
  transform: scale(0.94);
}

.bc__btn:focus-visible {
  outline: 3px solid #2f6df6;
  outline-offset: 2px;
}

.bc__done {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin: 0;
  visibility: hidden;
}

.bc.is-done .bc__done {
  visibility: visible;
}

.bc.is-done .bc__btn {
  visibility: hidden;
}

.bc.is-done .bc__bars {
  opacity: 0.3;
}

.bc.is-done .bc__digits {
  text-decoration: line-through;
  color: rgba(23, 20, 26, 0.4);
}

.bc__tick {
  width: 14px;
  height: 14px;
  color: #479074;
}

.bc__done span {
  font-weight: 800;
  font-size: clamp(11px, 3vw, 12px);
  color: #479074;
}

.bc__live {
  margin: 0;
  min-height: 1.2em;
  font-weight: 700;
  font-size: clamp(10px, 2.8vw, 11px);
  color: #fff7e6;
}

.bc.is-demo .bc__beam {
  visibility: visible;
  animation: bcBeamLoop 2s ease-in-out infinite;
}

@keyframes bcBeamLoop {
  0%, 10% {
    transform: translateY(0);
  }
  68% {
    transform: translateY(60px);
  }
  68.5%, 93% {
    transform: translateY(60px);
    opacity: 0;
  }
  93.5%, 100% {
    transform: translateY(0);
    opacity: 1;
  }
}
.bc.is-demo .bc__btn {
  animation: bcBtnCut 2s steps(1, end) infinite;
}

@keyframes bcBtnCut {
  0%, 73% {
    visibility: visible;
  }
  73.5%, 93% {
    visibility: hidden;
  }
  93.5%, 100% {
    visibility: visible;
  }
}
.bc.is-demo .bc__done {
  visibility: visible;
}

.bc.is-demo .bc__done {
  animation: bcDonePop 2s ease-out infinite;
}

@keyframes bcDonePop {
  0%, 73% {
    transform: scale(0);
  }
  77%, 92% {
    transform: scale(1);
  }
  94%, 100% {
    transform: scale(0);
  }
}
.bc.is-demo .bc__bars {
  animation: bcBarsCut 2s steps(1, end) infinite;
}

@keyframes bcBarsCut {
  0%, 73% {
    opacity: 1;
  }
  73.5%, 93% {
    opacity: 0.3;
  }
  93.5%, 100% {
    opacity: 1;
  }
}
.bc.is-demo .bc__digits {
  animation: bcDigitsCut 2s steps(1, end) infinite;
}

@keyframes bcDigitsCut {
  0%, 73% {
    opacity: 1;
  }
  73.5%, 93% {
    opacity: 0.4;
  }
  93.5%, 100% {
    opacity: 1;
  }
}
@media (max-width: 340px) {
  .bc__card {
    padding: 8px 12px;
  }
  .bc__bars {
    height: 40px;
    margin-top: 4px;
  }
  .bc__digits {
    margin-top: 4px;
  }
  .bc__foot {
    margin-top: 4px;
    min-height: 26px;
  }
  .bc {
    gap: 4px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .bc.is-demo .bc__beam,
  .bc.is-demo .bc__btn,
  .bc.is-demo .bc__done,
  .bc.is-demo .bc__bars,
  .bc.is-demo .bc__digits {
    animation: none !important;
  }
  .bc__btn {
    transition: none !important;
  }
  .bc.is-demo .bc__beam {
    transform: translateY(28px);
  }
  .bc.is-demo .bc__done {
    transform: scale(1);
  }
  .bc.is-demo .bc__btn {
    visibility: hidden;
  }
  .bc.is-demo .bc__bars {
    opacity: 0.3;
  }
  .bc.is-demo .bc__digits {
    opacity: 0.4;
  }
}