:root {
  --bg: #f4f5f7;
  --panel: #ffffff;
  --panel-2: #f0f1f4;
  --text: #1c1e21;
  --text-dim: #6b7280;
  --border: #e2e4e8;
  --primary: #3b6ef5;
  --primary-dim: #e6edff;
  --danger: #e5484d;
  --radius: 12px;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
  --reader-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --reader-size: 19px;
  --reader-line: 1.9;
  --reader-width: 760px;
  --reader-bg: #ffffff;
  --reader-text: #222222;
}

body[data-theme="sepia"] {
  --bg: #f2ecdf;
  --panel: #faf6ec;
  --panel-2: #efe7d6;
  --text: #3a3226;
  --text-dim: #8a7e68;
  --border: #e0d6c2;
  --primary: #9a6b3f;
  --primary-dim: #f0e4d2;
  --reader-bg: #f7f1e3;
  --reader-text: #3a3226;
}

body[data-theme="night"] {
  --bg: #121316;
  --panel: #1b1d21;
  --panel-2: #24272c;
  --text: #d7dae0;
  --text-dim: #8b919c;
  --border: #2d3138;
  --primary: #5b8cff;
  --primary-dim: #1e2a45;
  --reader-bg: #17181b;
  --reader-text: #c8ccd4;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--reader-font);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a {
  color: var(--primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* ---------------- 顶栏 ---------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 18px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-weight: 700;
}
.logo {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 15px;
}
.nav {
  display: flex;
  gap: 4px;
  margin-left: auto;
}
.nav-btn {
  border: 0;
  background: transparent;
  color: var(--text);
  padding: 7px 13px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
}
.nav-btn:hover {
  background: var(--panel-2);
}
.nav-btn.active {
  background: var(--primary-dim);
  color: var(--primary);
  font-weight: 600;
}

/* ---------------- 布局 ---------------- */
.view {
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 16px 80px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}
h1,
h2,
h3 {
  margin: 0 0 12px;
}
h2 {
  font-size: 20px;
}
.muted {
  color: var(--text-dim);
  font-size: 13px;
}
.row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.spacer {
  flex: 1;
}

/* ---------------- 控件 ---------------- */
input[type="text"],
input[type="url"],
input[type="number"],
select,
textarea {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
}
input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
}
input.grow {
  flex: 1;
  min-width: 180px;
}
button.btn {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding: 9px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
}
button.btn:hover {
  background: var(--panel-2);
}
button.btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
button.btn.primary:hover {
  filter: brightness(1.08);
}
button.btn.danger {
  color: var(--danger);
  border-color: var(--danger);
}
button.btn.small {
  padding: 5px 10px;
  font-size: 13px;
}
label.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--text-dim);
}

/* ---------------- 书源列表 ---------------- */
.source-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 4px;
  border-bottom: 1px solid var(--border);
}
.source-item:last-child {
  border-bottom: 0;
}
.source-name {
  font-weight: 600;
}
.source-url {
  color: var(--text-dim);
  font-size: 12px;
  word-break: break-all;
}
.badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--panel-2);
  color: var(--text-dim);
  font-size: 11px;
}
.switch {
  position: relative;
  width: 40px;
  height: 22px;
  flex: none;
  cursor: pointer;
}
.switch input {
  display: none;
}
.switch span {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: var(--border);
  transition: 0.2s;
}
.switch span::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  transition: 0.2s;
}
.switch input:checked + span {
  background: var(--primary);
}
.switch input:checked + span::after {
  transform: translateX(18px);
}

/* ---------------- 搜索结果 ---------------- */
.result-group {
  margin-bottom: 18px;
}
.result-group h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  color: var(--primary);
}
.book-row {
  display: flex;
  gap: 12px;
  padding: 12px 4px;
  border-bottom: 1px solid var(--border);
}
.book-row:last-child {
  border-bottom: 0;
}
.book-cover {
  width: 56px;
  height: 78px;
  object-fit: cover;
  border-radius: 6px;
  background: var(--panel-2);
  flex: none;
}
.book-cover.placeholder {
  display: grid;
  place-items: center;
  color: var(--text-dim);
  font-size: 11px;
}
.book-main {
  min-width: 0;
  flex: 1;
}
.book-title {
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 2px;
}
.book-meta {
  color: var(--text-dim);
  font-size: 12.5px;
  line-height: 1.7;
  overflow: hidden;
}
.book-intro {
  margin-top: 4px;
  color: var(--text-dim);
  font-size: 12.5px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------------- 详情 ---------------- */
.detail-head {
  display: flex;
  gap: 18px;
}
.detail-head .book-cover {
  width: 110px;
  height: 150px;
}
.detail-intro {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.9;
  white-space: pre-wrap;
}
.toc-list {
  max-height: 62vh;
  overflow: auto;
  margin-top: 10px;
}
.toc-item {
  display: block;
  padding: 9px 6px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
}
.toc-item:hover {
  background: var(--panel-2);
}
.toc-item.current {
  color: var(--primary);
  font-weight: 600;
}

/* ---------------- 阅读器 ---------------- */
.reader-bar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.reader-chapter {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.reader-wrap {
  background: var(--reader-bg);
  min-height: calc(100vh - 100px);
}
.reader-content {
  max-width: var(--reader-width);
  margin: 0 auto;
  padding: 28px 18px 120px;
  font-size: var(--reader-size);
  line-height: var(--reader-line);
  color: var(--reader-text);
  word-break: break-word;
}
.reader-content p {
  margin: 0 0 1em;
  text-indent: 2em;
}
.reader-content img {
  max-width: 100%;
  height: auto;
}
.reader-title {
  font-size: 1.25em;
  font-weight: 700;
  margin-bottom: 1.2em;
  text-indent: 0;
}
.reader-nav {
  display: flex;
  gap: 12px;
  justify-content: space-between;
  max-width: var(--reader-width);
  margin: 0 auto;
  padding: 0 18px 60px;
}
.settings-drawer {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  padding: 14px;
  border-bottom: 1px solid var(--border);
  background: var(--panel-2);
}
.settings-drawer label {
  font-size: 12.5px;
  color: var(--text-dim);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.theme-dots {
  display: flex;
  gap: 8px;
}
.theme-dot {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 2px solid var(--border);
  cursor: pointer;
}
.theme-dot.active {
  border-color: var(--primary);
}

/* ---------------- 杂项 ---------------- */
.empty {
  text-align: center;
  color: var(--text-dim);
  padding: 48px 16px;
}
.error-text {
  color: var(--danger);
  font-size: 13px;
}
.toast {
  position: fixed;
  left: 50%;
  bottom: 30px;
  transform: translateX(-50%);
  background: rgba(20, 20, 24, 0.92);
  color: #fff;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 13.5px;
  z-index: 100;
  max-width: 86vw;
}
.overlay {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: rgba(0, 0, 0, 0.35);
  color: #fff;
}

/* 关键：作者样式里的 display 会覆盖 UA 的 [hidden]，必须显式隐藏 */
.overlay[hidden],
.toast[hidden] {
  display: none;
}
.spinner {
  width: 34px;
  height: 34px;
  border: 3px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
.overlay-text {
  font-size: 14px;
}

@media (max-width: 560px) {
  .brand-name {
    display: none;
  }
  .nav-btn {
    padding: 7px 10px;
  }
  .detail-head .book-cover {
    width: 88px;
    height: 120px;
  }
}