:root {
  --paper: #f3efe6;
  --paper-deep: #eae4d7;
  --card: #fffdf8;
  --ink: #22272d;
  --ink-soft: #5b636b;
  --muted: #8a9099;
  --line: #e4ddcd;
  --line-soft: #efe9dd;
  --accent: #a8442a;
  --accent-dark: #8b3520;
  --accent-soft: #f6e7e1;
  --ok: #2f7a52;
  --err: #b32d2d;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(34, 39, 45, .04), 0 8px 24px -16px rgba(34, 39, 45, .28);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

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

body {
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 88% -10%, #fbf7ee 0%, transparent 60%),
    var(--paper);
  -webkit-font-smoothing: antialiased;
  font-size: 14px;
  line-height: 1.6;
}

h2, h3 { margin: 0; font-weight: 600; letter-spacing: .01em; }

button { font-family: inherit; }

/* ------------------------------------------------------------ 顶栏 */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 24px;
  padding: 12px 28px;
  background: rgba(255, 253, 248, .88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 10px; }
.logo { display: flex; }
.brand-text { display: flex; align-items: baseline; gap: 8px; }
.brand-text strong { font-size: 16px; letter-spacing: .02em; }
.version { font-size: 11px; color: var(--muted); letter-spacing: .06em; }

.top-stats { display: flex; gap: 22px; margin-left: auto; }
.stat { display: flex; align-items: baseline; gap: 6px; font-size: 12px; color: var(--muted); }
.stat b { font-size: 15px; color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------------ 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 8px 14px; border-radius: 9px; border: 1px solid transparent;
  font-size: 13px; font-weight: 500; cursor: pointer;
  transition: background .16s ease, border-color .16s ease, transform .12s ease, color .16s ease;
  background: transparent; color: var(--ink);
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 1px 2px rgba(139, 53, 32, .24); }
.btn-primary:hover:not(:disabled) { background: var(--accent-dark); }
.btn-ghost { border-color: var(--line); background: var(--card); color: var(--ink-soft); }
.btn-ghost:hover { border-color: #d3c9b4; color: var(--ink); }
.btn-sm { padding: 5px 10px; font-size: 12px; border-radius: 7px; }
.btn-block { width: 100%; padding: 11px; font-size: 14px; margin-top: 14px; }
.btn-danger:hover { color: var(--err); border-color: #e3bcbc; }

/* ------------------------------------------------------------ 布局 */
.layout {
  display: grid; grid-template-columns: 400px minmax(0, 1fr);
  gap: 20px; align-items: start;
  max-width: 1480px; margin: 0 auto; padding: 24px 28px 64px;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}
.panel-upload { position: sticky; top: 78px; }
.panel-title { font-size: 15px; }
.panel-desc { margin: 6px 0 16px; font-size: 12.5px; color: var(--ink-soft); }
.hint { color: var(--muted); font-size: 12px; margin: 8px 0 0; }

/* ------------------------------------------------------------ 上传区 */
.dropzone {
  border: 1.5px dashed #d8cfba; border-radius: 12px;
  padding: 26px 16px; text-align: center; cursor: pointer;
  color: var(--ink-soft); background: #fdfaf3;
  transition: border-color .16s, background .16s, color .16s;
}
.dropzone:hover, .dropzone:focus-visible, .dropzone.dragover {
  border-color: var(--accent); background: var(--accent-soft); color: var(--accent-dark); outline: none;
}
.dz-main { margin-top: 8px; font-size: 13.5px; font-weight: 500; }
.dz-sub { font-size: 11.5px; color: var(--muted); margin-top: 2px; }

.filelist { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
.file-row {
  border: 1px solid var(--line-soft); border-radius: 10px;
  padding: 10px; background: #fffefb; position: relative;
}
.file-row .name {
  font-size: 11.5px; color: var(--muted); white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis; padding-right: 22px;
}
.file-fields { display: flex; flex-direction: column; gap: 6px; margin-top: 6px; }
.file-fields input, .shelf-tools input, textarea {
  width: 100%; padding: 7px 9px; font-size: 13px; font-family: inherit;
  border: 1px solid var(--line); border-radius: 8px; background: #fff;
  color: var(--ink); transition: border-color .16s, box-shadow .16s;
}
.file-fields input:focus, .shelf-tools input:focus, textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(168, 68, 42, .1);
}
.file-remove {
  position: absolute; top: 6px; right: 6px;
  width: 22px; height: 22px; border-radius: 50%; border: 0;
  background: transparent; color: var(--muted); cursor: pointer; font-size: 16px; line-height: 1;
}
.file-remove:hover { background: #f2ece0; color: var(--err); }
.row-tip { font-size: 11px; color: var(--accent); margin-top: 4px; }

.advanced { margin-top: 14px; border-top: 1px solid var(--line-soft); padding-top: 12px; }
.advanced summary { cursor: pointer; font-size: 12.5px; color: var(--ink-soft); }
.advanced textarea {
  margin-top: 10px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px; line-height: 1.5; resize: vertical;
}

.advanced input[type="url"] {
  width: 100%; margin-top: 8px; padding: 7px 9px; font-size: 13px; font-family: inherit;
  border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink);
}
.advanced input[type="url"]:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(168, 68, 42, .1);
}
.cover-file-row { display: flex; align-items: center; gap: 8px; }

/* ------------------------------------------------------------ 字体选择 */
.field-row {
  display: flex; align-items: center; gap: 10px; margin-top: 16px;
  padding-top: 14px; border-top: 1px solid var(--line-soft);
}
.field-row label { font-size: 12.5px; color: var(--ink-soft); white-space: nowrap; }
.field-row select {
  flex: 1; padding: 7px 9px; font-size: 13px; font-family: inherit;
  border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink);
}
.field-row select:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(168, 68, 42, .1);
}

/* ------------------------------------------------------------ 书架 */
.shelf-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.shelf-tools { margin-left: auto; display: flex; gap: 8px; }
.shelf-tools input { width: 200px; }

.grid {
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fill, minmax(184px, 1fr));
}

.card {
  max-width: 250px;
  border: 1px solid var(--line); border-radius: 12px; overflow: hidden;
  background: #fffefb; display: flex; flex-direction: column;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover { transform: translateY(-2px); border-color: #d7cdb8; box-shadow: 0 12px 26px -18px rgba(34, 39, 45, .5); }

.card-cover {
  position: relative; aspect-ratio: 3 / 4.15; background: var(--paper-deep);
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.card-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card-cover .no-cover {
  font-size: 30px; color: #cfc4ab; font-weight: 600; letter-spacing: .1em;
}
.card-actions {
  position: absolute; inset: auto 0 0 0; display: flex; gap: 6px;
  padding: 8px; background: linear-gradient(to top, rgba(20, 22, 26, .78), rgba(20, 22, 26, 0));
  opacity: 0; transform: translateY(4px); transition: opacity .18s, transform .18s;
}
.card:hover .card-actions, .card:focus-within .card-actions { opacity: 1; transform: translateY(0); }
.card-actions .btn {
  flex: 1; background: rgba(255, 255, 255, .94); color: var(--ink);
  font-size: 12px; padding: 6px 8px; border: 0;
}
.card-actions .btn:hover { background: #fff; }
.card-actions .btn.icon { flex: 0 0 34px; color: var(--err); }

.card-body { padding: 10px 12px 12px; display: flex; flex-direction: column; gap: 3px; }
.card-title {
  font-size: 13.5px; font-weight: 600; line-height: 1.35;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.card-author { font-size: 12px; color: var(--ink-soft); }
.card-meta { font-size: 11.5px; color: var(--muted); font-variant-numeric: tabular-nums; }

.empty { text-align: center; padding: 60px 20px; color: var(--ink-soft); }
.empty p { margin: 0 0 6px; }

/* ------------------------------------------------------------ 进度 */
.toasts {
  position: fixed; right: 20px; bottom: 20px; z-index: 40;
  display: flex; flex-direction: column; gap: 10px; width: 320px;
}
.job {
  background: var(--card); border: 1px solid var(--line); border-radius: 11px;
  padding: 12px 14px; box-shadow: 0 10px 30px -18px rgba(34, 39, 45, .55);
  animation: rise .2s ease;
}
@keyframes rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.job-top { display: flex; align-items: baseline; gap: 8px; }
.job-name {
  font-size: 13px; font-weight: 600; flex: 1;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.job-status { font-size: 11.5px; color: var(--muted); font-variant-numeric: tabular-nums; }
.job-msg { font-size: 11.5px; color: var(--ink-soft); margin-top: 4px; }
.job-err { color: var(--err); font-size: 11.5px; margin-top: 4px; white-space: pre-wrap; }
.bar { height: 4px; border-radius: 2px; background: #ece6d8; margin-top: 8px; overflow: hidden; }
.bar span { display: block; height: 100%; width: 0; background: var(--accent); transition: width .3s ease; }
.job.done .bar span { background: var(--ok); }
.job.fail .bar span { background: var(--err); }
.job .btn { margin-top: 8px; }

/* ------------------------------------------------------------ 弹窗 */
.modal {
  position: fixed; inset: 0; z-index: 50; display: flex;
  align-items: center; justify-content: center; padding: 20px;
  background: rgba(28, 31, 36, .42); backdrop-filter: blur(2px);
}
.modal[hidden] { display: none; }
.modal-card {
  position: relative; background: var(--card); border-radius: 16px;
  padding: 24px; width: 100%; max-width: 420px;
  box-shadow: 0 30px 60px -30px rgba(20, 22, 26, .6);
}
.modal-card h3 { font-size: 16px; margin-bottom: 6px; }
.modal-close {
  position: absolute; top: 10px; right: 12px; border: 0; background: none;
  font-size: 22px; line-height: 1; color: var(--muted); cursor: pointer;
}
.modal-close:hover { color: var(--ink); }
.url-box {
  display: flex; align-items: center; gap: 8px; margin-top: 14px;
  background: #f7f3e9; border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px;
}
.url-box code {
  flex: 1; font-size: 13px; word-break: break-all; color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.qr-wrap { display: flex; justify-content: center; margin-top: 16px; }
.qr-wrap img { width: 180px; height: 180px; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 6px; }

/* ------------------------------------------------------------ 响应式 */
@media (max-width: 1020px) {
  .layout { grid-template-columns: 1fr; padding: 16px; }
  .panel-upload { position: static; }
  .top-stats { display: none; }
  .topbar { padding: 10px 16px; gap: 12px; }
  .toasts { left: 12px; right: 12px; width: auto; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .shelf-tools input { width: 140px; }
  .card-actions { opacity: 1; transform: none; background: linear-gradient(to top, rgba(20, 22, 26, .72), rgba(20, 22, 26, 0)); }
}

/* ------------------------------------------------------------ 封面选择 */
.checkline {
  display: flex; align-items: flex-start; gap: 8px;
  margin-top: 10px; font-size: 12.5px; color: var(--ink-soft); cursor: pointer;
}
.checkline input { margin-top: 2px; accent-color: var(--accent); }

.cover-search-row { display: flex; align-items: center; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.cover-search-row .hint { margin: 0; }

.cover-cands {
  display: flex; gap: 10px; margin-top: 10px; padding: 10px;
  overflow-x: auto; background: #faf7ef; border: 1px solid var(--line-soft); border-radius: 10px;
}
.cover-cands[hidden] { display: none; }
.cand {
  flex: 0 0 auto; width: 66px; border: 2px solid transparent; border-radius: 8px;
  padding: 0; background: none; cursor: pointer; text-align: center;
}
.cand img {
  width: 62px; height: 84px; object-fit: cover; border-radius: 5px;
  border: 1px solid var(--line); display: block; background: #fff;
}
.cand span { display: block; font-size: 10px; color: var(--muted); margin-top: 3px; }
.cand:hover img { border-color: #cdbfa4; }
.cand.on { border-color: var(--accent); }
.cand.on span { color: var(--accent); }
.cand-empty { font-size: 12px; color: var(--muted); padding: 8px 2px; }

.cover-file-row input[type="file"] { width: 100%; font-size: 12px; color: var(--ink-soft); margin-top: 8px; }
#btn-cover-clear { margin-top: 8px; }