:root{
  --bg:#f5f6fa; --panel:#fff; --text:#1a1d29; --muted:#8b90a3; --line:#e8eaf1;
  --brand:#5b5bd6; --brand2:#8b5cf6; --danger:#e5484d; --ok:#0f8a63;
  --radius:14px; --shadow:0 1px 2px rgba(16,24,40,.04),0 10px 30px -14px rgba(16,24,40,.16);
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  -webkit-font-smoothing:antialiased}
button,input,textarea{font-family:inherit}
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-thumb{background:#d3d6e6;border-radius:9px}
.hidden{display:none !important}

/* ================= 登录页 ================= */
#authView{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;
  background:radial-gradient(1200px 600px at 20% 10%,rgba(91,91,214,.12),transparent 60%),
    radial-gradient(1000px 500px at 90% 90%,rgba(139,92,246,.12),transparent 60%),var(--bg)}
.auth-card{width:min(380px,100%);background:#fff;border-radius:20px;
  box-shadow:0 30px 80px -30px rgba(16,24,40,.3),0 1px 2px rgba(16,24,40,.04);
  padding:34px 30px 30px;border:1px solid var(--line)}
.auth-brand{display:flex;align-items:center;gap:12px;margin-bottom:22px}
.auth-brand .logo{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  color:#fff;font-size:20px;background:linear-gradient(135deg,var(--brand),var(--brand2));
  box-shadow:0 8px 20px -6px rgba(91,91,214,.7)}
.auth-brand h1{margin:0;font-size:17px}
.auth-brand p{margin:2px 0 0;font-size:12px;color:var(--muted)}
.auth-tabs{display:flex;gap:4px;background:#eef0f7;padding:4px;border-radius:11px;margin-bottom:18px}
.auth-tabs button{flex:1;border:none;background:transparent;padding:8px;border-radius:8px;
  font-size:13.5px;color:#5a5f78;cursor:pointer;transition:.18s;font-weight:500}
.auth-tabs button.active{background:#fff;color:var(--brand);box-shadow:0 1px 4px rgba(16,24,40,.1)}
.auth-field{margin-bottom:12px}
.auth-field label{display:block;font-size:11.5px;color:var(--muted);margin-bottom:5px;font-weight:600}
.auth-field input{width:100%;border:1px solid var(--line);border-radius:10px;padding:11px 13px;
  font-size:14px;outline:none;background:#fbfbfe;transition:.2s}
.auth-field input:focus{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(91,91,214,.12)}
.auth-btn{width:100%;border:none;border-radius:10px;padding:12px;font-size:14px;font-weight:600;
  cursor:pointer;transition:.18s;background:linear-gradient(135deg,var(--brand),var(--brand2));
  color:#fff;box-shadow:0 8px 20px -8px rgba(91,91,214,.9);margin-top:6px}
.auth-btn:hover{transform:translateY(-1px)}
.auth-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}
.auth-msg{font-size:12.5px;margin-top:10px;min-height:18px;color:var(--danger);text-align:center}

/* ================= 顶栏 ================= */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:10px;
  padding:11px 22px;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:11px}
.logo{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;color:#fff;font-size:17px;
  background:linear-gradient(135deg,var(--brand),var(--brand2));
  box-shadow:0 6px 16px -6px rgba(91,91,214,.85)}
.brand h1{margin:0;font-size:15px}
.brand p{margin:1px 0 0;font-size:11px;color:var(--muted)}
.spacer{flex:1}

/* ================= 按钮 ================= */
.btn{border:none;border-radius:9px;padding:8px 15px;font-size:13.5px;font-weight:500;
  cursor:pointer;transition:.18s;white-space:nowrap}
.btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;
  box-shadow:0 6px 16px -7px rgba(91,91,214,.9)}
.btn.primary:hover{transform:translateY(-1px)}
.btn.primary:disabled{opacity:.55;cursor:not-allowed;transform:none}
.btn.ghost{background:#fff;border:1px solid var(--line);color:#4c5169}
.btn.ghost:hover{border-color:#c9cbe0;background:#fafaff}
.btn.sm{padding:6px 12px;font-size:12.5px;border-radius:8px}
.btn.xs{padding:4px 10px;font-size:12px;border-radius:7px}
.btn.danger-ghost{background:#fff;border:1px solid #ffd6d6;color:var(--danger)}
.btn.danger-ghost:hover{background:#fff5f5}

.user-state{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:#4c5169;
  padding:5px 12px;border-radius:99px;background:#f3f4fa;border:1px solid var(--line)}
.user-state b{font-weight:600;color:#3d4258}
.ai-state{display:inline-flex;align-items:center;gap:6px;font-size:11.5px;padding:5px 11px;
  border-radius:99px;border:1px solid var(--line);background:#fff;color:var(--muted)}
.ai-state i{width:7px;height:7px;border-radius:50%;background:#c3c6d6}
.ai-state.on i{background:#10b981;box-shadow:0 0 0 3px rgba(16,185,129,.18)}
.ai-state.on{color:var(--ok);border-color:#c4ead9}

/* ================= 主布局 ================= */
.app{display:grid;grid-template-columns:minmax(300px,360px) 1fr;gap:18px;padding:18px 22px 60px;
  max-width:1400px;margin:0 auto;align-items:start}
@media(max-width:900px){.app{grid-template-columns:1fr}}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}

.input-panel{padding:16px;position:sticky;top:74px}
@media(max-width:900px){.input-panel{position:static}}
.input-panel h2{margin:0 0 12px;font-size:14.5px;display:flex;align-items:center;justify-content:space-between;gap:8px}
.input-panel h2 .hint{font-size:11px;color:var(--muted);font-weight:400}

.dropzone{border:2px dashed var(--line);border-radius:12px;padding:20px 14px;text-align:center;
  cursor:pointer;transition:.2s;background:#fbfbfe;margin-bottom:12px}
.dropzone:hover,.dropzone.drag{border-color:var(--brand);background:rgba(91,91,214,.05)}
.dz-icon{font-size:19px;color:var(--brand);margin-bottom:4px}
.dz-text{font-size:13px;color:#4c5169}
.dz-text b{color:var(--brand);font-weight:600}
.dz-sub{font-size:11px;color:var(--muted);margin-top:4px}

#textInput{width:100%;min-height:150px;resize:vertical;border:1px solid var(--line);border-radius:12px;
  padding:11px 13px;font-size:13.5px;line-height:1.75;outline:none;background:#fbfbfe;transition:.2s}
#textInput:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(91,91,214,.12);background:#fff}

.row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:11px}
.counter{font-size:11.5px;color:var(--muted)}
.status{font-size:12px;color:var(--brand);margin-top:9px;min-height:16px;line-height:1.6}
.status.err{color:var(--danger)}

/* ================= 列表头 ================= */
.list-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:4px 4px 12px;flex-wrap:wrap}
.list-head h2{margin:0;font-size:14.5px;display:flex;align-items:center;gap:8px}
.list-head .badge{font-size:11px;font-weight:600;color:var(--brand);background:rgba(91,91,214,.1);
  padding:2px 8px;border-radius:99px}
.view-toggle{display:flex;gap:3px;background:#eef0f7;padding:3px;border-radius:9px}
.view-toggle button{border:none;background:transparent;padding:5px 12px;border-radius:6px;
  font-size:12px;color:#5a5f78;cursor:pointer;transition:.15s;font-weight:500}
.view-toggle button.active{background:#fff;color:var(--brand);box-shadow:0 1px 3px rgba(16,24,40,.1)}

.list{display:flex;flex-direction:column;gap:14px}

/* ================= 目录分组 ================= */
.folder-group{background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow);overflow:hidden;margin-bottom:14px}
.folder-group > summary{list-style:none;display:flex;align-items:center;justify-content:space-between;
  gap:10px;padding:12px 16px;cursor:pointer;font-size:13.5px;font-weight:600;color:#3d4258;
  user-select:none;background:#fafbff;border-bottom:1px solid transparent;transition:.15s}
.folder-group[open] > summary{border-bottom-color:var(--line)}
.folder-group > summary:hover{background:#f4f5ff}
.folder-group > summary::-webkit-details-marker{display:none}
.folder-group > summary::before{content:"▸";font-size:11px;color:var(--muted);
  transition:.15s;display:inline-block;width:14px;text-align:center}
.folder-group[open] > summary::before{transform:rotate(90deg)}
.folder-path{flex:1;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;color:var(--brand)}
.folder-path.root{color:#8b90a3}
.folder-count{font-size:11.5px;color:var(--muted);background:#f2f3fa;padding:2px 8px;border-radius:99px;font-weight:500}
.folder-body{padding:14px;display:flex;flex-direction:column;gap:13px}

/* ================= 卡片 ================= */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:16px;transition:.18s}
.card:hover{border-color:#d8dbee}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.kind{font-size:11px;font-weight:600;padding:3px 9px;border-radius:99px;
  background:rgba(16,185,129,.1);color:var(--ok)}
.kind.img{background:rgba(244,63,94,.1);color:#f43f5e}
.kind.text{background:rgba(99,102,241,.12);color:#6366f1}
.kind.media{background:rgba(245,158,11,.12);color:#b47400}
.time{font-size:11px;color:var(--muted)}
.card-title-row{display:flex;align-items:flex-start;gap:10px;margin-bottom:8px}
.card-file-icon{font-size:22px;line-height:1.2;flex:0 0 auto;width:32px;text-align:center;
  padding:4px;background:#f7f8fd;border-radius:8px}
.card-title{margin:0;font-size:15px;font-weight:600;line-height:1.5;word-break:break-all;flex:1;padding-top:2px}
.card-folder{display:inline-flex;align-items:center;gap:4px;font-size:11px;color:var(--muted);
  padding:2px 8px;border-radius:6px;background:#f5f6fa;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.card-folder::before{content:"📁"}
.card-meta-line{font-size:11.5px;color:var(--muted);margin-bottom:9px;display:flex;gap:10px;
  flex-wrap:wrap;align-items:center}

.card-thumb-wrap{margin:8px 0;border-radius:9px;overflow:hidden;background:#f3f4f9;
  display:flex;align-items:center;justify-content:center;height:170px;cursor:zoom-in;transition:.15s}
.card-thumb-wrap:hover{background:#e9ebf4}
.card-thumb{max-width:100%;max-height:170px;display:block;object-fit:contain}
.thumb-placeholder{display:flex;flex-direction:column;align-items:center;gap:6px;font-size:28px;color:#c5c8d9}
.thumb-placeholder span{font-size:11px;color:#9ca2b8}
.card-media-badge{display:inline-block;margin:8px 0;padding:6px 12px;border-radius:8px;
  background:#f3f4f9;font-size:12px;color:#5a5f78;font-weight:500}

.actions{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}

/* ================= AI 结果区域 ================= */
.ai-section{margin-top:13px;border-top:1px dashed var(--line);padding-top:12px}
.ai-section[hidden]{display:none}
.ai-section-head{display:flex;align-items:center;justify-content:space-between;gap:8px;
  font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.4px;margin-bottom:8px}
.ai-section-head::before{content:"";width:6px;height:6px;border-radius:50%;
  background:var(--brand2);margin-right:4px}
.ai-versions{display:flex;flex-direction:column;gap:7px}
.ai-version{border:1px solid #eef0f8;border-radius:9px;background:#fafbff;overflow:hidden}
.ai-version > summary{list-style:none;display:flex;align-items:center;justify-content:space-between;
  gap:8px;padding:8px 12px;cursor:pointer;font-size:12.5px;color:#5a5f78;user-select:none}
.ai-version > summary::-webkit-details-marker{display:none}
.ai-version > summary::before{content:"▸";font-size:10px;color:var(--muted);
  transition:.15s;display:inline-block;width:12px;text-align:center}
.ai-version[open] > summary::before{transform:rotate(90deg)}
.ai-version > summary:hover{background:#f4f5ff}
.ai-version-time{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ai-version-actions{display:flex;gap:5px;flex:0 0 auto}
.ai-content{padding:12px 16px;border-top:1px solid #eef0f8;font-size:13.5px;line-height:1.85;
  color:#333a52;word-break:break-word;max-height:520px;overflow:auto}
.ai-content > *:first-child{margin-top:0}
.ai-content h1,.ai-content h2,.ai-content h3,.ai-content h4,.ai-content h5,.ai-content h6{
  margin:18px 0 8px;font-weight:650;line-height:1.4;color:#1a1d29}
.ai-content h1{font-size:19px;padding-bottom:6px;border-bottom:1px solid #e9ebf5}
.ai-content h2{font-size:16.5px;padding-bottom:5px;border-bottom:1px solid #eef0f8}
.ai-content h3{font-size:15px}
.ai-content p{margin:9px 0}
.ai-content ul,.ai-content ol{margin:8px 0;padding-left:24px}
.ai-content li{margin:4px 0}
.ai-content blockquote{margin:10px 0;padding:8px 14px;border-left:3px solid var(--brand);
  background:#f4f5ff;color:#565c78;border-radius:0 8px 8px 0}
.ai-content blockquote p{margin:3px 0}
.ai-content code{background:#eef0f7;padding:1.5px 6px;border-radius:5px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12.2px;color:#c0392b}
.ai-content pre{position:relative;background:#1e2130;color:#e6e8f0;padding:14px 16px;
  border-radius:10px;overflow-x:auto;margin:11px 0;font-size:12.3px;line-height:1.7}
.ai-content pre code{background:none;padding:0;color:inherit;font-size:inherit}
.ai-content pre .copy-code{position:absolute;top:7px;right:7px;font-size:10.5px;
  padding:3px 8px;border-radius:5px;border:none;background:rgba(255,255,255,.14);
  color:#cfd3e6;cursor:pointer;opacity:0;transition:.15s}
.ai-content pre:hover .copy-code{opacity:1}
.ai-content table{border-collapse:collapse;margin:12px 0;font-size:12.5px;
  display:block;overflow-x:auto;max-width:100%}
.ai-content th,.ai-content td{border:1px solid #e2e4f0;padding:6px 11px;text-align:left;vertical-align:top}
.ai-content th{background:#f4f6fc;font-weight:600;color:#3d4258}
.ai-content a{color:var(--brand);text-decoration:none;border-bottom:1px solid rgba(91,91,214,.32)}
.ai-content hr{border:none;border-top:1px solid #e8eaf1;margin:16px 0}
.ai-content strong{font-weight:650;color:#1a1d29}
.ai-content em{font-style:italic}

.cursor{display:inline-block;width:7px;height:15px;background:var(--brand);
  vertical-align:-2px;margin-left:2px;border-radius:1px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* ================= 空状态 ================= */
.empty{padding:70px 24px;text-align:center;color:var(--muted);background:#fff;
  border:1px dashed var(--line);border-radius:var(--radius)}
.empty .big{font-size:34px;margin-bottom:12px;opacity:.4}
.empty p{margin:6px 0;font-size:13.5px}
.empty span{font-size:12px;color:#a5a9bd}

/* ================= 通用弹窗 ================= */
.modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:18px}
.modal[hidden]{display:none}
.modal-backdrop{position:absolute;inset:0;background:rgba(16,20,40,.45);backdrop-filter:blur(3px)}
.modal-body{position:relative;background:#fff;border-radius:16px;width:min(680px,100%);
  max-height:90vh;overflow:auto;box-shadow:0 30px 70px -20px rgba(16,24,40,.55);animation:pop .18s ease-out}
@keyframes pop{from{opacity:0;transform:translateY(10px) scale(.985)}to{opacity:1;transform:none}}
.modal-inner{padding:22px}
.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.modal-head h3{margin:0;font-size:15.5px}
.icon-btn{border:none;background:#f2f3fa;width:29px;height:29px;border-radius:8px;cursor:pointer;
  color:#5a5f78;font-size:13px;line-height:1;transition:.16s}
.icon-btn:hover{background:#e8eaf3}

.field{margin-bottom:14px}
.field label{display:block;font-size:11.5px;color:var(--muted);margin-bottom:5px;font-weight:600}
.field input,.field textarea{width:100%;border:1px solid var(--line);border-radius:9px;
  padding:9px 11px;font-size:13px;outline:none;background:#fbfbfe;transition:.2s;line-height:1.7}
.field textarea{resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;min-height:220px}
.field input:focus,.field textarea:focus{border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 3px rgba(91,91,214,.12)}
.field .hint{font-size:11px;color:var(--muted);margin-top:4px}

/* 文件名 = 可编辑主体 + 不可编辑后缀 */
.name-input-group{
  display:flex;align-items:stretch;
  border:1px solid var(--line);border-radius:9px;background:#fbfbfe;
  overflow:hidden;transition:.2s;
}
.name-input-group:focus-within{
  border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 3px rgba(91,91,214,.12);
}
.name-input-group input{
  flex:1;border:none;outline:none;background:transparent;
  padding:9px 11px;font-size:13px;line-height:1.7;color:var(--text);min-width:0;
}
.name-input-group input:focus{box-shadow:none}
.name-input-group .ext-tag{
  display:flex;align-items:center;padding:0 11px;
  font-size:13px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  color:var(--muted);background:#eef0f7;border-left:1px solid var(--line);
  user-select:none;cursor:not-allowed;white-space:nowrap;
}
.name-input-group .ext-tag.no-ext{display:none;}

.tip{font-size:11.5px;color:var(--muted);line-height:1.85;background:#fafbff;
  border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin-top:4px}
.tip code{background:#eef0f7;padding:1px 5px;border-radius:4px;font-size:11px}
.tip b{color:#3d4258}
.modal-foot{display:flex;justify-content:flex-end;gap:9px;margin-top:18px;padding-top:15px;
  border-top:1px solid var(--line);flex-wrap:wrap}

/* ================= 预览弹窗 ================= */
.preview-modal-body{position:relative;background:#fff;border-radius:16px;width:min(1000px,95vw);
  max-height:92vh;display:flex;flex-direction:column;overflow:hidden;
  box-shadow:0 30px 70px -20px rgba(16,24,40,.55);animation:pop .18s ease-out}
.preview-head{display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:13px 18px;border-bottom:1px solid var(--line);flex:0 0 auto;background:#fafbff}
.preview-title{flex:1;font-size:14px;font-weight:600;color:#3d4258;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.preview-body{flex:1;overflow:auto;padding:16px 20px;min-height:200px;background:#f5f6fa}
.preview-image-wrap{text-align:center;padding:8px}
.preview-image-wrap img{max-width:100%;max-height:78vh;border-radius:8px;
  box-shadow:0 4px 20px -6px rgba(16,24,40,.2)}
.preview-media{display:flex;flex-direction:column;align-items:center;gap:14px;padding:30px 20px;
  background:#fff;border-radius:12px}
.preview-media audio{width:100%;max-width:520px}
.preview-media video{max-width:100%;max-height:78vh;border-radius:8px;background:#000}
.preview-media-icon{font-size:40px;opacity:.7}
.preview-pre{background:#fff;border-radius:10px;padding:16px 18px;margin:0;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.8px;line-height:1.75;
  color:#333a52;white-space:pre-wrap;word-break:break-word}
.preview-md{background:#fff;border-radius:10px;padding:18px 22px;font-size:14px;line-height:1.85;color:#333a52}
.preview-md > *:first-child{margin-top:0}
.preview-md h1,.preview-md h2,.preview-md h3{margin:18px 0 8px;font-weight:650;color:#1a1d29}
.preview-md h1{font-size:22px;padding-bottom:8px;border-bottom:1px solid #e9ebf5}
.preview-md h2{font-size:18px;padding-bottom:6px;border-bottom:1px solid #eef0f8}
.preview-md h3{font-size:16px}
.preview-md p{margin:10px 0}
.preview-md ul,.preview-md ol{margin:8px 0;padding-left:26px}
.preview-md li{margin:4px 0}
.preview-md blockquote{margin:12px 0;padding:10px 16px;border-left:3px solid var(--brand);
  background:#f4f5ff;color:#565c78;border-radius:0 8px 8px 0}
.preview-md code{background:#eef0f7;padding:1.5px 6px;border-radius:5px;
  font-family:ui-monospace,Menlo,monospace;font-size:12.5px;color:#c0392b}
.preview-md pre{position:relative;background:#1e2130;color:#e6e8f0;padding:14px 16px;
  border-radius:10px;overflow-x:auto;margin:12px 0;font-size:12.5px;line-height:1.7}
.preview-md pre code{background:none;padding:0;color:inherit}
.preview-md pre .copy-code{position:absolute;top:7px;right:7px;font-size:10.5px;
  padding:3px 8px;border-radius:5px;border:none;background:rgba(255,255,255,.14);
  color:#cfd3e6;cursor:pointer;opacity:0;transition:.15s}
.preview-md pre:hover .copy-code{opacity:1}
.preview-md table{border-collapse:collapse;margin:12px 0;font-size:13px;
  display:block;overflow-x:auto;max-width:100%}
.preview-md th,.preview-md td{border:1px solid #e2e4f0;padding:6px 11px;text-align:left}
.preview-md th{background:#f4f6fc;font-weight:600}
.preview-md a{color:var(--brand);text-decoration:none;border-bottom:1px solid rgba(91,91,214,.32)}
.preview-docx{background:#fff;border-radius:10px;padding:20px 26px;font-size:14px;line-height:1.85;color:#333a52}
.preview-docx > *:first-child{margin-top:0}
.preview-docx h1,.preview-docx h2,.preview-docx h3{margin:16px 0 8px;color:#1a1d29}
.preview-docx h1{font-size:22px}
.preview-docx h2{font-size:18px}
.preview-docx h3{font-size:16px}
.preview-docx p{margin:10px 0}
.preview-docx ul,.preview-docx ol{padding-left:26px}
.preview-docx li{margin:4px 0}
.preview-docx table{border-collapse:collapse;margin:10px 0;max-width:100%}
.preview-docx th,.preview-docx td{border:1px solid #e2e4f0;padding:6px 10px}
.preview-docx th{background:#f4f6fc;font-weight:600}
.preview-docx img{max-width:100%;height:auto}
.preview-docx a{color:var(--brand)}
.pdf-pages{display:flex;flex-direction:column;align-items:center;gap:14px;padding:6px}
.pdf-page{background:#fff;box-shadow:0 4px 20px -8px rgba(16,24,40,.25);border-radius:4px;display:block}
.pdf-info{text-align:center;font-size:11.5px;color:#8b90a3;margin-bottom:10px}
.preview-loading{display:flex;align-items:center;justify-content:center;gap:10px;
  padding:60px 20px;color:#5a5f78;font-size:13.5px;background:#fff;border-radius:10px}
.preview-tip{background:#fff;border-radius:10px;padding:40px 20px;text-align:center;
  color:#5a5f78;font-size:13.5px;line-height:1.9}

/* ================= 整理弹窗 ================= */
.organize-loading{padding:36px 20px;text-align:center;color:#5a5f78;font-size:13.5px;
  display:flex;flex-direction:column;align-items:center;gap:12px}
.organize-suggest-box{background:#f4f5ff;border:1px solid #e6e7f5;border-radius:10px;
  padding:12px 14px;margin-bottom:14px;font-size:12.5px;line-height:1.75;color:#4c5169}
.organize-suggest-box b{color:var(--brand);font-weight:600}

/* ================= Toast / Spin ================= */
.toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,14px);opacity:0;
  background:#1f2333;color:#fff;padding:10px 19px;border-radius:11px;font-size:13px;
  box-shadow:0 14px 34px -10px rgba(0,0,0,.55);transition:.28s;z-index:200;max-width:88vw}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.ok{background:#0f5132}
.toast.warn{background:#8a3b12}
.spin{display:inline-block;animation:sp 1s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

@media(max-width:640px){
  .topbar{padding:9px 12px;gap:8px}
  .app{padding:12px 12px 50px}
  .preview-modal-body{width:100%;max-height:95vh}
  .preview-body{padding:10px 12px}
}
/* ===== 标签 ===== */
.card-tags {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
  margin: 6px 0 4px;
}
.tag {
  display: inline-block;
  font-size: 11px;
  padding: 2px 9px;
  border-radius: 99px;
  background: #eef0ff;
  color: #5b5bd6;
  font-weight: 500;
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== 目录组头部按钮 ===== */
.folder-group > summary .folder-rename-btn,
.folder-group > summary .folder-merge-btn {
  flex: 0 0 auto;
  padding: 3px 9px;
  font-size: 11px;
  border-radius: 6px;
}
.folder-group > summary .folder-rename-btn:hover,
.folder-group > summary .folder-merge-btn:hover {
  background: #fff;
  border-color: #c9cbe0;
}

/* ===== 组织建议框里的多行信息 ===== */
.organize-suggest-box > div + div { margin-top: 6px; }

/* ===== 文件卡片标题允许换行（超长文件名场景） ===== */
.card-title {
  word-break: break-word;
  overflow-wrap: anywhere;
}

/* ===== 弹窗中的 datalist 输入框（与普通 input 保持一致） ===== */
input[list] {
  background-image: linear-gradient(45deg, transparent 50%, #8b90a3 50%),
                    linear-gradient(135deg, #8b90a3 50%, transparent 50%);
  background-position: calc(100% - 14px) 50%, calc(100% - 9px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 26px;
}
input[list]::-webkit-calendar-picker-indicator {
  opacity: 0;
  pointer-events: none;
}