.sub-tool-wrapper { --p-bg: #ffffff; --p-border: #e2e8f0; --p-primary: #6366f1; --p-primary-hover: #4f46e5; --p-text: #0f172a; width: 100%; max-width: 1200px; margin: 0 auto; background: var(--p-bg); border-radius: 20px; padding: 32px; border: 1px solid var(--p-border); box-shadow: 0 10px 25px -5px rgba(0,0,0,0.05); }
.sub-header-main { font-size: 1.6rem; font-weight: 800; color: var(--p-text); margin-bottom: 12px; text-align: center; }
.sub-subtitle { color: #64748b; font-size: 0.95rem; padding-bottom: 20px; border-bottom: 1px solid var(--p-border); margin-bottom: 24px; text-align: center; max-width: 800px; margin-left: auto; margin-right: auto; line-height: 1.6; }

.sub-layout { display: grid; grid-template-columns: 380px 1fr; gap: 24px; align-items: start; }
@media(max-width: 900px) { .sub-layout { grid-template-columns: 1fr; } }

.sub-control-panel, .sub-list-panel { background: #f8fafc; border: 1px solid var(--p-border); border-radius: 16px; padding: 24px; display: flex; flex-direction: column; }
.sub-panel-title { font-weight: 700; color: var(--p-text); font-size: 1.1rem; display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--p-border); }

/* 表单与选择器 */
.sub-form-group { margin-bottom: 20px; }
.sub-label { display: block; font-size: 0.95rem; font-weight: 600; color: #475569; margin-bottom: 8px; }
.sub-select { width: 100%; padding: 12px; border: 2px solid #cbd5e1; border-radius: 10px; background: #ffffff; font-size: 0.95rem; color: var(--p-text); outline: none; transition: 0.2s; }
.sub-select:focus { border-color: var(--p-primary); }

.sub-radio-group { display: flex; gap: 16px; }
.sub-radio { font-size: 0.9rem; color: #475569; cursor: pointer; display: flex; align-items: center; gap: 6px; }

/* 拖拽上传区 */
.sub-dropzone { border: 2px dashed #cbd5e1; background: #ffffff; border-radius: 12px; padding: 40px 20px; text-align: center; cursor: pointer; transition: 0.3s; display: flex; flex-direction: column; align-items: center; justify-content: center; margin-top: 10px; }
.sub-dropzone:hover { border-color: var(--p-primary); background: #eef2ff; }
.sub-dropzone.dragover { border-color: var(--p-primary); background: #eef2ff; transform: scale(1.02); }
.sub-dropzone-icon { font-size: 2.5rem; margin-bottom: 10px; }
.sub-dropzone-text { font-weight: 700; color: var(--p-text); margin-bottom: 6px; }
.sub-dropzone-hint { font-size: 0.85rem; color: #94a3b8; }

/* 文件列表 */
.sub-file-list { display: flex; flex-direction: column; gap: 12px; min-height: 250px; max-height: 500px; overflow-y: auto; padding-right: 8px; }
.sub-empty-state { color: #94a3b8; text-align: center; margin-top: 80px; font-size: 0.95rem; }

.sub-file-item { background: #ffffff; border: 1px solid var(--p-border); border-radius: 12px; padding: 16px; display: flex; justify-content: space-between; align-items: center; transition: 0.2s; }
.sub-file-item:hover { border-color: #cbd5e1; box-shadow: 0 4px 12px rgba(0,0,0,0.03); }
.sub-file-info { display: flex; flex-direction: column; gap: 4px; overflow: hidden; }
.sub-file-name { font-weight: 600; color: var(--p-text); font-size: 0.95rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 250px; }
.sub-file-meta { font-size: 0.8rem; color: #64748b; }
.sub-file-status { font-size: 0.8rem; font-weight: 700; color: #10b981; }
.sub-file-status.error { color: #ef4444; }

/* 按钮 */
.sub-actions { margin-top: 24px; border-top: 1px solid var(--p-border); padding-top: 20px; }
.sub-btn { width: 100%; border: none; padding: 14px; border-radius: 10px; font-weight: bold; font-size: 1.05rem; cursor: pointer; transition: 0.2s; display: flex; justify-content: center; align-items: center; gap: 8px; }
.sub-btn-primary { background: var(--p-primary); color: white; box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3); }
.sub-btn-primary:hover { background: var(--p-primary-hover); transform: translateY(-2px); }

.sub-btn-sm { border: none; padding: 6px 12px; border-radius: 6px; font-weight: 600; font-size: 0.85rem; cursor: pointer; transition: 0.2s; }
.sub-btn-success { background: #10b981; color: white; }
.sub-btn-success:hover { background: #059669; }
.sub-btn-danger { background: #fee2e2; color: #dc2626; }
.sub-btn-danger:hover { background: #fca5a5; }

/* 黑夜模式 */
[data-theme="dark"] .sub-tool-wrapper { background: #1e293b; border-color: #334155; }
[data-theme="dark"] .sub-header-main, [data-theme="dark"] .sub-panel-title, [data-theme="dark"] .sub-dropzone-text { color: #f8fafc; }
[data-theme="dark"] .sub-control-panel, [data-theme="dark"] .sub-list-panel { background: #0f172a; border-color: #475569; }
[data-theme="dark"] .sub-panel-title, [data-theme="dark"] .sub-actions { border-color: #475569; }
[data-theme="dark"] .sub-label { color: #cbd5e1; }
[data-theme="dark"] .sub-select { background: #1e293b; border-color: #475569; color: #f8fafc; }
[data-theme="dark"] .sub-select:focus { border-color: var(--p-primary); }
[data-theme="dark"] .sub-radio { color: #cbd5e1; }
[data-theme="dark"] .sub-dropzone { background: #1e293b; border-color: #475569; }
[data-theme="dark"] .sub-dropzone:hover, [data-theme="dark"] .sub-dropzone.dragover { background: rgba(99, 102, 241, 0.1); border-color: var(--p-primary); }
[data-theme="dark"] .sub-file-item { background: #1e293b; border-color: #475569; }
[data-theme="dark"] .sub-file-name { color: #f8fafc; }
[data-theme="dark"] .sub-btn-danger { background: rgba(220, 38, 38, 0.2); color: #fca5a5; }