:root {
  --bg0: #0b1220;
  --bg1: #0b1a28;
  --ink: #e9efe7;
  --muted: rgba(233, 239, 231, 0.72);
  --faint: rgba(233, 239, 231, 0.42);
  --card: rgba(12, 20, 33, 0.7);
  --card2: rgba(16, 28, 44, 0.86);
  --stroke: rgba(255, 255, 255, 0.1);
  --shadow: 0 18px 70px rgba(0, 0, 0, 0.55);
  --accent: #9ce2c3;
  --accent2: #f8d29b;
  --danger: #ff7a7a;

  --radius: 18px;
  --radius2: 14px;
  --top: 74px;
  --page-font: 18px;
  --page-weight: 500;
  --page-lh: 1.85;
  --reader-font-family: "Microsoft YaHei Variable", "Microsoft YaHei",
    "PingFang SC", "Noto Sans SC", "Source Han Sans SC", "WenQuanYi Micro Hei",
    "Noto Serif SC", "Source Han Serif SC", "STSong", "Songti SC", "Noto Serif",
    serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  color: var(--ink);
  background: radial-gradient(1200px 900px at 18% 10%, #15365a 0%, transparent 55%),
    radial-gradient(900px 700px at 80% 22%, #2a5b40 0%, transparent 48%),
    radial-gradient(800px 640px at 50% 86%, #4a2c56 0%, transparent 52%),
    linear-gradient(160deg, var(--bg0), var(--bg1));
  font-family: "Source Han Serif SC", "Noto Serif SC", "STSong", "Songti SC",
    "Noto Serif", serif;
  overflow: hidden;
}

.bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(
      2px 2px at 20px 30px,
      rgba(255, 255, 255, 0.14),
      transparent 60%
    ),
    radial-gradient(2px 2px at 140px 90px, rgba(255, 255, 255, 0.08), transparent 60%),
    radial-gradient(2px 2px at 60px 180px, rgba(255, 255, 255, 0.1), transparent 60%);
  background-size: 220px 220px;
  opacity: 0.35;
  filter: blur(0.2px);
}

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--top);
  display: grid;
  grid-template-columns: 1fr minmax(240px, 720px);
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  backdrop-filter: blur(14px);
  background: linear-gradient(
    180deg,
    rgba(9, 14, 22, 0.78) 0%,
    rgba(9, 14, 22, 0.54) 100%
  );
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 20;
  transform: translateY(0);
  opacity: 1;
  transition: transform 220ms ease, opacity 220ms ease;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 240px;
}

.brandMark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  font-weight: 800;
  letter-spacing: 0.02em;
  background: conic-gradient(from 210deg, var(--accent), var(--accent2), #87c1ff, var(--accent));
  color: rgba(10, 12, 16, 0.92);
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.35);
}

.brandText {
  display: grid;
  gap: 2px;
}

.brandTitle {
  font-weight: 800;
  letter-spacing: 0.01em;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
}

.brandSub {
  color: var(--muted);
  font-size: 12px;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
}

.urlForm {
  display: grid;
  grid-template-columns: 1fr auto auto auto auto;
  gap: 10px;
  align-items: center;
}

.urlInput {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(7, 10, 16, 0.4);
  color: var(--ink);
  outline: none;
  font-size: 14px;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
}

.urlInput:focus {
  border-color: rgba(156, 226, 195, 0.55);
  box-shadow: 0 0 0 3px rgba(156, 226, 195, 0.12);
}

.btn {
  height: 44px;
  padding: 0 14px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  color: var(--ink);
  cursor: pointer;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.btn:hover {
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.09);
}

.btnPrimary {
  border-color: rgba(156, 226, 195, 0.42);
  background: linear-gradient(
    180deg,
    rgba(156, 226, 195, 0.22),
    rgba(156, 226, 195, 0.08)
  );
}

.btnPrimary:hover {
  border-color: rgba(156, 226, 195, 0.6);
}

.btnGhost {
  background: rgba(0, 0, 0, 0.06);
}

#hideTopbar {
  white-space: nowrap;
}

.main {
  position: fixed;
  inset: var(--top) 0 0 0;
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 16px;
  padding: 16px;
  z-index: 10;
  transition: inset 220ms ease;
}

.drawer {
  position: relative;
  z-index: 40;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(16, 28, 44, 0.75), rgba(8, 12, 18, 0.55));
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: grid;
  grid-template-rows: auto auto 1fr;
  transform: translateX(-12px);
  opacity: 0;
  pointer-events: none;
  transition: transform 220ms ease, opacity 220ms ease;
}

.drawer.open {
  transform: translateX(0);
  opacity: 1;
  pointer-events: auto;
}

.drawerHeader {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 12px 10px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.drawerTitle {
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  font-weight: 900;
  letter-spacing: 0.01em;
}

.drawerTools {
  padding: 10px 12px 12px 12px;
  display: grid;
  gap: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.chapterSearch {
  height: 40px;
  padding: 0 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.22);
  color: var(--ink);
  outline: none;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
}

.typeTools {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.chip {
  height: 34px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  color: var(--ink);
  cursor: pointer;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  font-weight: 700;
  font-size: 12px;
}

.chip:hover {
  background: rgba(255, 255, 255, 0.09);
}

.chapterList {
  overflow: auto;
  padding: 10px 12px 14px 12px;
}

.chapterItem {
  display: flex;
  gap: 10px;
  padding: 10px 10px;
  border-radius: 14px;
  border: 1px solid transparent;
  cursor: pointer;
  user-select: none;
}

.chapterItem:hover {
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
}

.chapterItem.active {
  border-color: rgba(156, 226, 195, 0.32);
  background: rgba(156, 226, 195, 0.09);
}

.chapterIdx {
  min-width: 44px;
  color: var(--faint);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  font-weight: 800;
}

.chapterName {
  flex: 1;
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  line-height: 1.25;
}

.reader {
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 16px;
}

.card {
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(16, 28, 44, 0.72), rgba(8, 12, 18, 0.56));
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow);
}

.introCard {
  padding: 18px 18px 14px 18px;
}

.introTop {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.introLeft {
  min-width: 0;
  display: grid;
  gap: 6px;
}

.introTitle {
  font-weight: 900;
  font-size: 22px;
  letter-spacing: 0.01em;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  min-width: 0;
}

.introMeta {
  color: var(--muted);
  font-size: 13px;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
}

.introBody {
  color: rgba(233, 239, 231, 0.86);
  line-height: 1.7;
  max-height: 220px;
  overflow: auto;
  padding-right: 6px;
}

.introBody p {
  margin: 0 0 10px 0;
}

.introActions {
  display: flex;
  gap: 10px;
  padding-top: 12px;
}

.introCard.compact {
  padding: 12px 14px;
}

.introCard.compact .introBody,
.introCard.compact .introActions {
  display: none;
}

.introCard.compact .introTitle {
  font-size: 16px;
}

.introCard.compact .introMeta {
  font-size: 12px;
}

.pageCard {
  position: relative;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  min-height: 0;
  overflow: hidden;
}

.pageHeader {
  padding: 14px 18px 10px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.chapterTitle {
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  font-weight: 900;
  letter-spacing: 0.01em;
  font-size: 15px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pageMeta {
  color: var(--muted);
  font-size: 12px;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  white-space: nowrap;
}

.pageBody {
  position: relative;
  padding: 14px 18px 0 18px;
  min-height: 0;
}

.pageText {
  height: 100%;
  min-height: 0;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
  font-family: var(--reader-font-family);
  font-size: var(--page-font);
  font-weight: var(--page-weight);
  line-height: var(--page-lh);
  color: rgba(233, 239, 231, 0.9);
  letter-spacing: 0.01em;
  padding-right: 6px;
}

.pageText p {
  margin: 0 0 0.75em 0;
}

.tapZone {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 36%;
  z-index: 5;
  pointer-events: none;
}

.tapZone.left {
  left: 0;
}

.tapZone.right {
  right: 0;
}

.pageFooter {
  padding: 10px 18px 14px 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
  min-width: 0;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

.pageFooter:focus-visible {
  outline: 2px solid rgba(156, 226, 195, 0.72);
  outline-offset: -2px;
}

.hint {
  color: var(--faint);
  font-size: 12px;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.progress {
  color: rgba(156, 226, 195, 0.95);
  font-size: 12px;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  font-weight: 800;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.loadingOverlay {
  position: absolute;
  inset: 0;
  z-index: 8;
  pointer-events: none;
  display: grid;
  place-content: center;
  gap: 10px;
  justify-items: center;
  background: linear-gradient(180deg, rgba(5, 8, 12, 0.28), rgba(5, 8, 12, 0.38));
  backdrop-filter: blur(1px);
}

.loadingOverlay[hidden] {
  display: none !important;
}

.loadingSpinner {
  width: 30px;
  height: 30px;
  border-radius: 999px;
  border: 3px solid rgba(255, 255, 255, 0.2);
  border-top-color: rgba(156, 226, 195, 0.95);
  animation: spin 760ms linear infinite;
}

.loadingLabel {
  color: var(--muted);
  font-size: 12px;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  letter-spacing: 0.02em;
}

.scrim {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.52);
  z-index: 20;
}

.sheetScrim {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.46);
  z-index: 45;
}

.sheet {
  position: fixed;
  left: 50%;
  bottom: 12px;
  width: min(520px, calc(100vw - 24px));
  transform: translate(-50%, 18px);
  opacity: 0;
  pointer-events: none;
  z-index: 50;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: linear-gradient(180deg, rgba(16, 28, 44, 0.95), rgba(9, 15, 24, 0.94));
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.45);
  padding: 12px;
  display: grid;
  gap: 10px;
  transition: transform 220ms ease, opacity 220ms ease;
}

.sheet.open {
  transform: translate(-50%, 0);
  opacity: 1;
  pointer-events: auto;
}

.sheetTitle {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.03em;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
}

.sheetActions {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
}

.sheet .chip {
  width: 100%;
}

.sheetClose {
  width: 100%;
}

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

.measure {
  position: fixed;
  left: -9999px;
  top: 0;
  width: 720px;
  padding: 14px 18px 0 18px;
  font-family: var(--reader-font-family);
  font-size: var(--page-font);
  font-weight: var(--page-weight);
  line-height: var(--page-lh);
  visibility: hidden;
}

.topbarHidden .topbar {
  transform: translateY(calc(-100% - 8px));
  opacity: 0;
  pointer-events: none;
}

.topbarHidden .main {
  inset: 8px 0 0 0;
}

.topbarHidden .introCard {
  display: none;
}

.topbarHidden .reader {
  grid-template-rows: minmax(0, 1fr);
  gap: 0;
}

@media (max-width: 980px) {
  .topbar {
    grid-template-columns: 1fr;
    height: auto;
    padding-bottom: 12px;
  }
  .urlForm {
    grid-template-columns: 1fr auto auto auto;
  }
  #hideTopbar {
    grid-column: 2 / span 3;
  }
  .main {
    inset: calc(var(--top) + 8px) 0 0 0;
    grid-template-columns: 1fr;
    padding: 12px;
  }
  .drawer {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: 12px;
    top: calc(var(--top) + 12px);
    z-index: 30;
    transform: translateY(18px);
  }
  .drawer.open {
    transform: translateY(0);
  }

  .topbarHidden .drawer {
    top: 12px;
  }

  .sheet {
    left: 12px;
    right: 12px;
    width: auto;
    transform: translate(0, 18px);
  }

  .sheet.open {
    transform: translate(0, 0);
  }
}