/* 复刻 nomadbook 电子书样式 */

.readingProgress {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: linear-gradient(90deg, #4facfe 0%, #00f2fe 100%);
  z-index: 201;
  transition: width 0.15s linear;
  border-radius: 0 4px 4px 0;
}

.headerSpacer {
  width: 100%;
  height: 88px;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 88px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
}

.headerLeft {
  width: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #1a1a2e;
  cursor: pointer;
}

.headerMiddle {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  color: #1a1a2e;
  letter-spacing: 2px;
}

.headerRight {
  width: 72px;
  height: 72px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #4facfe;
  cursor: pointer;
  margin-right: 10px;
  background: #f0f7ff;
  border-radius: 50%;
  transition: all 0.2s ease;
}

.headerRight:hover {
  background: #dceeff;
}

.headerRightActive {
  background: #4facfe !important;
  color: #fff !important;
}

.chunkEnter {
  animation: chunkAppear 0.5s ease-out both;
}

@keyframes chunkAppear {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.chunkPlaceholder {
  background: linear-gradient(90deg, #f6f7f8 25%, #edeef1 37%, #f6f7f8 63%);
  background-size: 400% 100%;
  animation: shimmer 1.8s ease infinite;
  border-radius: 12px;
  margin: 24px 0;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.loadingSpinner {
  width: 56px;
  height: 56px;
  border: 5px solid #f0f0f0;
  border-top-color: #4facfe;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.backToTop {
  position: fixed;
  bottom: 120px;
  right: 30px;
  width: 80px;
  height: 80px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  z-index: 50;
  animation: fadeInUp 0.3s ease;
  color: #4facfe;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.backToTop:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.12);
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.book {
  padding: 30px;
  max-width: 100%;
}

.markdownBody {
  font-size: 16px !important;
  line-height: 1.85 !important;
  color: #2c3e50 !important;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.markdownBody h1 {
  font-size: 24px !important;
  font-weight: 800;
  color: #1a1a2e;
  margin: 28px 0 10px;
  padding-bottom: 0;
  border-bottom: none;
  line-height: 1.3;
}

.markdownBody h1::after {
  content: "";
  display: block;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, #4facfe, #00f2fe);
  border-radius: 3px;
  margin-top: 8px;
}

.markdownBody h2 {
  font-size: 21px !important;
  font-weight: 700;
  color: #2c3e50;
  margin: 22px 0 9px;
  padding-bottom: 12px;
  border-bottom: 1px solid #f0f0f0;
  line-height: 1.3;
}

.markdownBody h3 {
  font-size: 18px !important;
  font-weight: 600;
  color: #34495e;
  margin: 18px 0 7px;
}

.markdownBody h4,
.markdownBody h5,
.markdownBody h6 {
  font-size: 16px !important;
  font-weight: 600;
  color: #4a5568;
  margin: 14px 0 6px;
}

.markdownBody p {
  font-size: 16px !important;
  margin-bottom: 10px;
  line-height: 1.9;
}

.markdownBody blockquote {
  position: relative;
  margin: 28px 0;
  padding: 20px 24px 20px 30px;
  border-left: none;
  background: linear-gradient(135deg, #f8fbff 0%, #f0f7ff 100%);
  border-radius: 0 12px 12px 0;
  color: #4a5568;
}

.markdownBody blockquote::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  background: linear-gradient(180deg, #4facfe, #00f2fe);
  border-radius: 3px;
}

.markdownBody pre {
  position: relative;
  margin: 28px 0;
  padding: 28px 24px 24px;
  background: #1e1e2e;
  border-radius: 12px;
  overflow-x: auto;
}

.markdownBody pre::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #4facfe, #00f2fe);
  border-radius: 12px 12px 0 0;
}

.markdownBody pre code {
  font-family: "SF Mono", "Fira Code", Menlo, Monaco, Consolas, monospace;
  font-size: 13px !important;
  line-height: 1.6;
  color: #e2e8f0;
  background: none !important;
  padding: 0;
}

.markdownBody code {
  font-family: "SF Mono", "Fira Code", Menlo, Monaco, Consolas, monospace;
  font-size: 14px !important;
  padding: 2px 6px;
  background: #f1f5f9;
  color: #e53e3e;
  border-radius: 6px;
}

.markdownBody a {
  color: #4facfe;
  text-decoration: none;
}

.markdownBody a:hover {
  color: #2b8de3;
  border-bottom: 1px solid #4facfe;
}

.markdownBody img {
  display: block;
  margin: 28px auto;
  max-width: 100%;
  height: auto;
  border-radius: 8px;
}

.markdownBody ul,
.markdownBody ol {
  margin: 16px 0;
  padding-left: 40px;
}

.markdownBody table {
  width: 100%;
  margin: 28px 0;
  border-collapse: collapse;
  border-radius: 8px;
}

.markdownBody th {
  background: linear-gradient(135deg, #f8fafc, #edf2f7);
  font-weight: 600;
  padding: 16px 20px;
  text-align: left;
  border: 1px solid #e2e8f0;
}

.markdownBody td {
  padding: 14px 20px;
  border: 1px solid #e2e8f0;
}

.markdownBody tr:nth-child(even) {
  background: #f8fafc;
}

/* 抽屉目录 */
.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 280px;
  max-width: 85vw;
  background: #fff;
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.1);
  z-index: 150;
  padding-top: 88px;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.drawerOpen {
  transform: translateX(0);
}

.drawerMask {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  z-index: 140;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.drawerMaskOpen {
  opacity: 1;
  pointer-events: auto;
}

.drawerItem {
  padding: 16px 20px;
  border-bottom: 1px solid #f5f5f5;
  color: #2c3e50;
  cursor: pointer;
  font-size: 15px;
  transition: background 0.15s;
}

.drawerItem:hover {
  background: #f0f7ff;
}

/* PC 适配 */
@media (min-width: 768px) {
  .headerSpacer {
    height: 56px;
  }

  .header {
    height: 56px;
  }

  .headerMiddle {
    font-size: 18px;
  }

  .headerRight {
    width: auto;
    height: 34px;
    padding: 0 14px;
    margin-right: 16px;
    gap: 5px;
    border-radius: 17px;
    font-size: 13px;
  }

  .book {
    padding: 30px 60px;
  }

  .markdownBody {
    font-size: 16px !important;
    line-height: 1.8 !important;
    max-width: 800px;
    margin: 0 auto;
  }

  .markdownBody h1 {
    font-size: 28px !important;
    margin: 36px 0 14px;
  }

  .markdownBody h1::after {
    width: 50px;
    height: 3px;
    margin-top: 10px;
  }

  .markdownBody h2 {
    font-size: 23px !important;
    margin: 28px 0 12px;
    padding-bottom: 8px;
  }

  .markdownBody h3 {
    font-size: 19px !important;
    margin: 22px 0 10px;
  }

  .markdownBody p {
    font-size: 16px !important;
    margin-bottom: 14px;
  }

  .markdownBody pre code {
    font-size: 14px !important;
  }

  .markdownBody code {
    font-size: 14px !important;
    padding: 2px 6px;
  }

  .backToTop {
    width: 44px;
    height: 44px;
    bottom: 40px;
    right: 40px;
  }

  .drawer {
    padding-top: 56px;
    width: 300px;
  }

  .drawerItem {
    font-size: 14px;
    padding: 14px 18px;
  }
}

@media (min-width: 1024px) {
  .book {
    padding: 30px 80px;
  }

  .markdownBody {
    width: 720px;
    font-size: 17px !important;
    line-height: 1.85 !important;
  }

  .markdownBody h1 {
    font-size: 30px !important;
  }

  .markdownBody h2 {
    font-size: 25px !important;
  }

  .markdownBody h3 {
    font-size: 20px !important;
  }

  .markdownBody p {
    font-size: 17px !important;
  }

  .markdownBody img.loaded:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
  }
}