/* ========== Reset ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }

:root {
  --bg: #f5f3ef;
  --surface: #fff;
  --text: #1a1a1a;
  --text2: #555;
  --text3: #999;
  --border: #e0ddd7;
  --accent: #1a73e8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #18181a;
    --surface: #222226;
    --text: #ddd;
    --text2: #999;
    --text3: #666;
    --border: #333;
    --accent: #5b9cf5;
  }
}

body {
  font-family: -apple-system, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========== 书架 ========== */
.site-title {
  font-size: 1.35rem;
  font-weight: 700;
  padding: 36px 0 4px;
}

.site-desc {
  color: var(--text3);
  font-size: 0.85rem;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}

.book-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 22px 24px;
  cursor: pointer;
  transition: border-color 0.15s;
}

.book-card:hover { border-color: var(--accent); }

.book-card h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.book-card .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 8px 0;
}

.book-card .tag {
  font-size: 0.75rem;
  padding: 2px 10px;
  border-radius: 3px;
  background: #eeebe7;
  color: var(--text2);
}

.book-card .blurb {
  font-size: 0.88rem;
  color: var(--text2);
  line-height: 1.7;
  margin-top: 8px;
}

.btn-read {
  margin-top: 12px;
  padding: 7px 24px;
  font-size: 0.88rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-family: inherit;
}
.btn-read:hover { opacity: 0.9; }

/* ========== 阅读 ========== */
.reader-top {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 0 10px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.back-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.88rem;
  white-space: nowrap;
}
.back-link:hover { text-decoration: underline; }

.reader-book-title {
  font-size: 0.85rem;
  color: var(--text3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reader-header {
  margin-bottom: 24px;
}

.ch-label {
  font-size: 0.8rem;
  color: var(--text3);
  letter-spacing: 2px;
  margin-bottom: 6px;
}

.ch-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.5;
}

/* ========== 正文 ========== */
#content {
  background: var(--surface);
  padding: 32px 28px 40px;
  margin-bottom: 24px;
}

#content p {
  margin: 0 0 0.8em 0;
  text-indent: 2em;
  line-height: 2;
  font-size: 1rem;
}

#content p:first-child { text-indent: 0; }

#content h1, #content h2, #content h3, #content h4 {
  margin: 1em 0 0.4em;
  font-weight: 700;
  line-height: 1.5;
  text-indent: 0;
}
#content h1 { font-size: 1.15rem; }

#content blockquote {
  margin: 0.6em 0;
  padding: 6px 14px 6px 18px;
  border-left: 3px solid #ccc;
  background: #f0eee9;
  color: var(--text2);
}
#content blockquote p { text-indent: 0; margin: 0; }

#content code {
  font-family: "SF Mono", "Consolas", monospace;
  font-size: 0.85em;
  background: #f0eee9;
  padding: 1px 5px;
  border-radius: 3px;
}

#content pre {
  background: #f0eee9;
  padding: 14px;
  border-radius: 3px;
  overflow-x: auto;
  margin: 0.6em 0;
}
#content pre code { background: none; padding: 0; }

#content ul, #content ol { margin: 0.4em 0; padding-left: 2em; }
#content li { margin: 0.15em 0; line-height: 2; }
#content a { color: var(--accent); }
#content hr { border: none; border-top: 1px solid var(--border); margin: 1em 0; }
#content img { max-width: 100%; height: auto; margin: 0.6em 0; }

/* ========== 加载 / 错误 ========== */
#content.loading { text-align: center; padding: 80px 20px; color: var(--text3); }
#content.loading::after { content: "加载中…"; }
.error { text-align: center; padding: 40px 20px; color: var(--accent); }

/* ========== 章节导航 ========== */
.ch-nav {
  text-align: center;
  margin-bottom: 24px;
}

.ch-select {
  padding: 8px 14px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.9rem;
  font-family: inherit;
  cursor: pointer;
  max-width: 100%;
  margin-bottom: 12px;
}

.ch-btns {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.ch-btn {
  padding: 8px 24px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.88rem;
  cursor: pointer;
  font-family: inherit;
  transition: border-color 0.15s;
}
.ch-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ========== 底部 ========== */
.footer { text-align: center; padding: 16px 0 40px; color: var(--text3); font-size: 0.78rem; border-top: 1px solid var(--border); margin-top: 8px; }

/* ========== 响应式 ========== */
@media (max-width: 480px) {
  #content { padding: 24px 16px 32px; }
  #content p { font-size: 0.95rem; }
}