/* 초기 로딩 화면 — 뷰포트 정중앙 (가로·세로) */
#loading-bg {
  position: fixed;
  inset: 0;
  z-index: 99999;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
}

/* 로고·스피너 동일 중심 오버랩 (그리드 한 칸 + place-items) */
.loading-logo {
  display: grid;
  place-items: center;
  width: min(350px, 85vw);
  max-width: 100%;
  padding: 24px;
  box-sizing: border-box;
  text-align: center;
}

.loading-logo > * {
  grid-area: 1 / 1;
}

.loading-logo img {
  width: 100%;
  max-width: min(350px, 85vw);
  height: auto;
  display: block;
  margin: 0;
  object-fit: contain;
  z-index: 0;
}

.loading {
  position: relative;
  width: 50px;
  height: 50px;
  margin: 0;
}

.loading-logo .loading {
  z-index: 1;
}

.loading .effect-1,
.loading .effect-2 {
  width: 50px;
  height: 50px;
  position: absolute;
  top: 0;
  left: 0;
  border: 3px solid transparent;
  border-left: 3px solid #2b3439;
  border-radius: 50%;
  box-sizing: border-box;
}

.loading .effect-1 {
  animation: rotate 1s ease infinite;
}

.loading .effect-2 {
  animation: rotateOpacity 1s ease infinite 0.1s;
}

.loading .effect-3 {
  width: 50px;
  height: 50px;
  position: absolute;
  top: 0;
  left: 0;
  border: 3px solid transparent;
  border-left: 3px solid #2b3439;
  animation: rotateOpacity 1s ease infinite 0.2s;
  border-radius: 50%;
  box-sizing: border-box;
}

.loading .effects {
  transition: all 0.3s ease;
}

@keyframes rotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(1turn);
  }
}

@keyframes rotateOpacity {
  0% {
    transform: rotate(0deg);
    opacity: 0.1;
  }
  100% {
    transform: rotate(1turn);
    opacity: 1;
  }
}