:root{
  --main:#1565a8; --bg:#f2f4f7; --card:#fff; --line:#d9dee3;
  --text:#24303a; --muted:#6b7783;
}

*{box-sizing:border-box;font-family:"Microsoft YaHei","PingFang SC","Segoe UI",sans-serif}

body{
  margin:0;
  padding:0 0 40px;
  background:var(--bg);
  color:var(--text);
  font-size:14px;
  line-height:1.6;
}

/* ---------- 顶部蓝色标题栏（与入口文件一致） ---------- */
header{
  background:var(--main);
  color:#fff;
  padding:18px 24px;
  box-shadow:0 2px 6px rgba(0,0,0,.12);
}
header h1{margin:0;font-size:19px;font-weight:600}

main{max-width:1040px;margin:18px auto;padding:0 16px}

.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:8px;
  padding:14px 18px;
  margin-bottom:14px;
}
.card>h2{
  margin:0 0 10px;
  font-size:14px;
  font-weight:600;
  color:var(--main);
  border-left:3px solid var(--main);
  padding-left:8px;
}

.tip{color:var(--muted);font-size:13px;margin:4px 0}
.empty{padding:18px;text-align:center;background:#fafbfc;border-radius:6px;margin:0;color:var(--muted)}

/* ---------- 上传区 ---------- */
.area{
  border:2px dashed var(--main);
  border-radius:10px;
  padding:36px;
  text-align:center;
  margin:10px 0;
  cursor:pointer;
  background:#fff;
  transition:background .15s,border-color .15s;
}
.area:hover{background:#f4f9fd}
.area:focus-visible{outline:3px solid rgba(21,101,168,.35);outline-offset:2px}
.area.over{background:#e8f1ff;border-color:#0d4f8f}
.area.disabled{pointer-events:none;opacity:.55}
.area p{margin:6px 0}

input{display:none}

/* ---------- 文件列表 ---------- */
#fileList{margin:10px 0;padding:0;list-style:none}
#fileList li{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  padding:10px 14px;
  background:#f7f9fc;
  border:1px solid var(--line);
  border-radius:6px;
  margin:8px 0;
}
#fileList li:hover{background:#eef4ff}
#fileList li .main{flex:1;display:flex;align-items:center;gap:8px;min-width:0;cursor:move}
#fileList li .idx{
  flex:none;width:22px;height:22px;line-height:22px;text-align:center;
  border-radius:50%;background:var(--main);color:#fff;font-size:12px;
}
#fileList li .name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#fileList li .meta{flex:none;color:var(--muted);font-size:12px}

.sortable-ghost{opacity:.4;background:#dce9ff !important}

/* ---------- 缩略图（每文件前几页） ---------- */
#fileList li .thumbs{flex:1 1 100%;display:flex;gap:10px;flex-wrap:wrap;margin-top:4px}
#fileList li .thumbs:empty{display:none}
#fileList li .thumbs figure{margin:0}
#fileList li .thumbs canvas{
  height:96px;width:auto;display:block;
  border:1px solid #d6dbe3;border-radius:4px;background:#fff;
  box-shadow:0 1px 3px rgba(0,0,0,.1);
}
#fileList li .thumbs figcaption{font-size:10px;color:#888;text-align:center;margin-top:2px}

/* ---------- 按钮 ---------- */
.btn{
  background:var(--main);color:#fff;border:none;
  padding:10px 20px;border-radius:6px;cursor:pointer;
  margin:5px;font-size:14px;
}
.btn:hover:not(:disabled){background:#12558f}
.btn:disabled{background:#c3cbd8;cursor:not-allowed}
.btn-ghost{background:#fff;color:#555;border:1px solid var(--line)}
.btn-ghost:hover:not(:disabled){background:#f2f4f7}
.btn-ghost:disabled{color:#aaa;border-color:#e5e8ec;background:#fafbfc}
.btn-del{flex:none;background:#ef4444;padding:4px 8px;font-size:12px;margin:0}
.btn-del:hover:not(:disabled){background:#e33c3e}

.actions{display:flex;align-items:center;flex-wrap:wrap}

/* ---------- 状态 ---------- */
.status{
  margin-top:12px;min-height:20px;font-size:14px;
  color:var(--text);white-space:pre-wrap;word-break:break-all;
}
.status.err{color:#d93025}

@media (max-width:480px){
  #fileList li{flex-wrap:wrap}
  #fileList li .meta{width:100%;padding-left:30px}
}