:root {
    --bg: #f5f6fa;
    --card: #ffffff;
    --primary: #4f46e5;
    --primary-2: #6366f1;
    --text: #1e293b;
    --muted: #94a3b8;
    --border: #e2e8f0;
    --radius: 14px;
    --shadow: 0 10px 30px rgba(15, 23, 42, .08);
}
* { box-sizing: border-box; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.boot-loading { display: flex; height: 100vh; align-items: center; justify-content: center; color: var(--muted); }

/* layout */
.topbar {
    position: sticky; top: 0; z-index: 30;
    background: rgba(255,255,255,.9); backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}
.topbar-inner {
    max-width: 1100px; margin: 0 auto; padding: 10px 16px;
    display: flex; align-items: center; gap: 16px;
}
.logo { font-size: 18px; font-weight: 800; color: var(--primary); white-space: nowrap; }
.logo small { color: var(--muted); font-weight: 500; margin-left: 6px; font-size: 12px; }
.nav { display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a {
    padding: 7px 12px; border-radius: 999px; white-space: nowrap;
    color: #475569; font-size: 14px;
}
.nav a.router-link-active, .nav a:hover { background: #eef2ff; color: var(--primary); }
.search-box { margin-left: auto; display: flex; align-items: center; gap: 8px; min-width: 0; }
.search-box input {
    width: 200px; max-width: 46vw; padding: 8px 12px;
    border: 1px solid var(--border); border-radius: 999px; outline: none; font-size: 14px;
}
.search-box input:focus { border-color: var(--primary); }
.btn {
    border: 0; cursor: pointer; border-radius: 999px; padding: 8px 16px;
    background: var(--primary); color: #fff; font-size: 14px; white-space: nowrap;
}
.btn:hover { background: var(--primary-2); }
.page { max-width: 1100px; margin: 0 auto; padding: 20px 16px 60px; }
.card {
    background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
    padding: 20px; margin-bottom: 18px;
}
.section-title { font-size: 20px; font-weight: 800; margin: 0 0 14px; display: flex; align-items: center; gap: 8px; }
.section-title::before { content: ''; width: 4px; height: 18px; border-radius: 4px; background: var(--primary); }
.section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.section-head h2 { font-size: 17px; font-weight: 700; margin: 0; }
.section-head a { color: var(--muted); font-size: 13px; }
.section-head a:hover { color: var(--primary); }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.grid { display: grid; gap: 14px; }
.grid-covers { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }
.grid-books { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
.cover-card { display: block; }
.cover-card .cover-wrap {
    aspect-ratio: 3/4; border-radius: 10px; overflow: hidden; background: #eef2ff;
    box-shadow: 0 4px 14px rgba(79,70,229,.12);
}
.cover-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .25s; }
.cover-card:hover img { transform: scale(1.05); }
.cover-card h3 { margin: 8px 0 2px; font-size: 14px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cover-card p { margin: 0; color: var(--muted); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.list-row {
    display: flex; align-items: center; gap: 10px; padding: 10px 0;
    border-bottom: 1px dashed var(--border); font-size: 14px;
}
.list-row:last-child { border-bottom: 0; }
.list-row .idx {
    width: 22px; height: 22px; flex: none; border-radius: 6px; background: #f1f5f9;
    display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: 12px;
}
.list-row .idx.hot { background: #fee2e2; color: #ef4444; }
.list-row .title { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: #334155; }
.list-row .title:hover { color: var(--primary); }
.list-row .meta { color: var(--muted); font-size: 12px; white-space: nowrap; }
.tag {
    display: inline-block; padding: 2px 8px; border-radius: 999px;
    background: #eef2ff; color: var(--primary); font-size: 12px; margin-right: 6px;
}
.book-hero { display: grid; grid-template-columns: 180px 1fr; gap: 24px; }
.book-hero .cover-wrap { border-radius: 12px; overflow: hidden; box-shadow: var(--shadow); aspect-ratio: 3/4; }
.book-hero h1 { margin: 0 0 8px; font-size: 26px; }
.book-hero .meta { color: var(--muted); font-size: 14px; margin-bottom: 8px; }
.book-hero .intro { color: #475569; font-size: 14px; max-height: 120px; overflow: auto; }
.book-actions { display: flex; gap: 10px; margin-top: 14px; }
.chapter-title { font-size: 24px; font-weight: 800; margin-bottom: 12px; }
.chapter-content { font-size: 18px; line-height: 2; color: #1f2937; word-break: break-all; }
.chapter-nav { display: flex; justify-content: space-between; margin-top: 24px; }
.chapter-nav a { padding: 9px 14px; border-radius: 10px; background: #eef2ff; color: var(--primary); font-size: 14px; }
.chapter-nav a.disabled { opacity: .4; pointer-events: none; }
.pager { display: flex; justify-content: center; gap: 8px; margin: 20px 0; flex-wrap: wrap; }
.pager a, .pager span {
    min-width: 34px; padding: 7px 10px; border-radius: 8px; text-align: center;
    background: #fff; border: 1px solid var(--border); color: #475569; font-size: 14px;
}
.pager .current { background: var(--primary); border-color: var(--primary); color: #fff; }
.empty { text-align: center; color: var(--muted); padding: 40px 0; }
.loading { text-align: center; padding: 40px 0; color: var(--muted); }
.footer { max-width: 1100px; margin: 0 auto; padding: 20px 16px 40px; color: var(--muted); font-size: 13px; text-align: center; }
.footer a { color: var(--muted); margin: 0 6px; }
.footer a:hover { color: var(--primary); }
@media (max-width: 640px) {
    .book-hero { grid-template-columns: 110px 1fr; gap: 16px; }
    .book-hero h1 { font-size: 20px; }
    .chapter-content { font-size: 16px; }
    .search-box input { width: 120px; }
}
/* admin form fields */
.fld { width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; margin-top: 4px; }