:root {
  --lb-padding: 1rem;
  --lb-optical-y: 0rem;
}

/* 라이트박스 기본 */
.lb-dialog {
  border: 0;
  padding: 0;
  background: transparent;
  inset: 0;
  width: 100%;
  height: 100%;
}
.lb-dialog::backdrop {
  background: rgba(255, 255, 255, 0.875);
}

.lb-container {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: var(--lb-padding);
}
.lb-figure {
  max-width: min(96vw, 1400px);
  max-height: 100svh;
  display: grid;
  /* gap: 1rem; */
  margin-bottom: 0;
}

.lb-media {
  position: relative;
  display: grid;
  place-items: center;
}

.lb-media img {
  max-width: 100%;
  max-height: calc(100svh - var(--lb-padding) * 2);
  object-fit: contain;
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.25);
}

/* 버튼 */
.lb-btn {
  appearance: none;
  border: 0;
  background: white;
  cursor: pointer;
  padding: 0;
}
/* 이전, 다음 */
.lb-prev,
.lb-next {
  position: absolute;
  top: 50%;
  transform: translateY(calc(-50% + var(--lb-optical-y)));
  width: 50%;
  height: 100%;
  opacity: 0;
}
.lb-prev {
  left: 0;
  cursor: w-resize;
}
.lb-next {
  right: 0;
  cursor: e-resize;
}

/* 로딩중... */
.lb-media.loading img {
  opacity: 0.001;
}
.lb-media.loading:before,
.lb-media.loading:after {
  content: "";
  position: absolute;
  inset: 0;
  top: 50%;
  left: 50%;
  width: 1.414rem;
  height: 1px;
  transform: translate(-50%, -50%);
  animation: spin 1s steps(8) infinite;
  background-color: black;
}
@keyframes spin {
  to {
    transform: translate(-50%, -50%) rotate(1turn);
  }
}

/* 닫기 */
.lb-close {
  position: absolute; /* 기준 컨테이너 */
  top: var(--lb-padding);
  right: var(--lb-padding);
  width: 2rem;
  height: 2rem;
  outline: none;
}
.lb-close::before,
.lb-close::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 141.42%;
  height: 1px;
  background: black;
  transform-origin: center;
}
.lb-close::before {
  transform: translate(-50%, -50%) rotate(45deg);
}
.lb-close::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.lb-info {
  position: absolute;
  width: 100%;
  bottom: 0;
  left: 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
}

/* 캡션 */
.lb-caption {
  display: inline-block;
  width: 75%;
  opacity: 1;
  /* text-align: center; */
}
.lb-caption p {
  /* position: absolute;
  bottom: 0;
  left: 0; */
  margin: var(--lb-padding);
  display: inline-block;
  line-height: 1.3;
  background-color: white;
  z-index: 999;
}

/* 인디케이터 */
.lb-counter {
  margin: var(--lb-padding);
  line-height: 1.3;
  /* letter-spacing: -0.1rem; */
  text-align: right;
  background: white;
  user-select: none;
}
.lb-counter p {
  display: inline-block;
  background: white;
}

/* 스크린리더 전용 */
.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media screen and (max-width: 480px) {
  :root {
    --lb-padding: 0.5rem;
  }
}