.pdf-viewer {
  border: 1px solid #ccc;
  /* margin-bottom: 20px; */
  background: #292929;
  height: -webkit-fill-available;
}

.pdf-topbar {
  display: grid;
  grid-template-columns: auto auto auto;
  padding: 5px;
  font-size: 14px;
  background: #333;
  color: white;
  height: 40px;
  text-align: center;
  align-items: center;
  /* position: fixed; */
  z-index: 999;
  width: -webkit-fill-available;
  gap: 5px;
}

.pdf-topbar > *:nth-child(1) {
  text-align: left;
  font-size: 12px;
}
.pdf-topbar > *:nth-child(3) {
  text-align: right;
}

.pdf-topbar .page_box {
  display: inline-block;
}

.pdf-topbar .zoom-in,
.pdf-topbar .zoom-out,
.pdf-topbar .moveFirst,
.pdf-topbar .moveLast {
  background: #555;
  color: white;
  border: none;
  width: 60px;
  padding: 0;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  padding: 0;
  width: 40px;
}

.pdf-topbar .moveLast {
  width: 50px;
}

.pdf-topbar .zoom-in:hover,
.pdf-topbar .zoom-out:hover,
.pdf-topbar .moveFirst,
.pdf-topbar .moveLast,
.pdf-topbar .current-page {
  background: #777;
}

.pdf-topbar .download-btn,
.pdf-topbar .print-btn {
  font-size: 18px;
  cursor: pointer;
  margin: 0 5px;
}

.pdf-container {
  width: 100%;
  height: 90vh;
  overflow: auto;
  margin-top: 30px;
  padding-top: 10px;
  box-sizing: border-box;
  justify-items: center;
}

.page {
  margin: 10px auto;
  min-height: 100px;
  position: relative;
  text-align: center;
}

.page-img {
  transition: opacity 0.5s ease; /* 서서히 전환 */
}

.page-img.loading {
  /*opacity: 0.5; /* 로딩 중 살짝 투명하게 */
}

/* 햄버거 버튼 */
#menuBtn {
  font-size: 1.5rem;
  cursor: pointer;
  user-select: none;
}

/* 레이어 메뉴 */
#tocLayer {
  display: none; /* 기본 숨김 */
  position: absolute;
  top: 40px;
  left: 10px;
  width: 90%;
  max-width: 300px;
  background: linear-gradient(345deg, black, #414141);
  border: 1px solid #2d2d2d;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  z-index: 1000;
  padding: 10px;
}

#tocLayer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

#tocLayer li {
  padding: 8px;
  text-align: left;
  border-bottom: 1px solid #2d2d2dd6;
  cursor: pointer;
}

#tocLayer li:hover {
  background: linear-gradient(45deg, #4d4c4c, transparent);
}

@media (max-width: 600px) {
  .pdf-topbar {
  }

  .zoom-level {
    order: -1; /* 화면 상단에 위치 */
  }
}