:root{
  --primary:#2563eb; --primary-dark:#1d4ed8; --bg:#f3f5f9; --card:#fff;
  --text:#1f2937; --muted:#6b7280; --border:#e5e7eb; --danger:#dc2626;
  --radius:10px;
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{font-family:"Microsoft YaHei","PingFang SC",sans-serif;background:var(--bg);color:var(--text);font-size:14px;overflow-x:hidden}
button{cursor:pointer;font-family:inherit}
input{font-family:inherit}

/* ===== 登录 ===== */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px;
  background:linear-gradient(135deg,#dbeafe 0%,#f3f5f9 50%,#e0e7ff 100%)}
.auth-card{background:var(--card);border-radius:16px;padding:32px 28px;width:100%;max-width:400px;
  box-shadow:0 10px 40px rgba(30,64,175,.12)}
.auth-logo{font-size:22px;font-weight:700;text-align:center}
.auth-sub{text-align:center;color:var(--muted);font-size:12px;margin:6px 0 18px}
.tabs{display:flex;border-bottom:1px solid var(--border);margin-bottom:18px}
.tab{flex:1;background:none;border:none;padding:10px 0;font-size:14px;color:var(--muted);border-bottom:2px solid transparent}
.tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}
.auth-card input{width:100%;padding:11px 12px;border:1px solid var(--border);border-radius:8px;margin-bottom:12px;font-size:14px;outline:none}
.auth-card input:focus{border-color:var(--primary)}
.seg{display:flex;background:var(--bg);border-radius:8px;padding:3px;margin-bottom:14px}
.seg-btn{flex:1;border:none;background:none;padding:7px;border-radius:6px;font-size:13px;color:var(--muted)}
.seg-btn.active{background:#fff;color:var(--primary);font-weight:600;box-shadow:0 1px 4px rgba(0,0,0,.08)}
.sms-row{display:flex;gap:8px}
.sms-row input{flex:1}
.btn-sms{white-space:nowrap;border:1px solid var(--primary);color:var(--primary);background:#fff;border-radius:8px;padding:0 12px;font-size:13px}
.btn-sms:disabled{opacity:.5}
.btn-main{width:100%;padding:12px;border:none;border-radius:8px;background:var(--primary);color:#fff;font-size:15px;font-weight:600;margin-top:4px}
.btn-main:hover{background:var(--primary-dark)}
.link{display:block;text-align:center;color:var(--muted);font-size:12px;margin-top:12px;text-decoration:none}
.auth-msg{color:var(--danger);font-size:13px;text-align:center;margin-top:10px;min-height:18px}

/* ===== 主框架 ===== */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:12px;height:52px;padding:0 16px;
  background:#fff;border-bottom:1px solid var(--border)}
.logo{font-weight:700;white-space:nowrap}
.search{flex:1;min-width:0;max-width:420px;padding:8px 14px;border:1px solid var(--border);border-radius:20px;outline:none;background:var(--bg)}
.search:focus{border-color:var(--primary);background:#fff}
.user-chip{margin-left:auto;white-space:nowrap;font-size:13px;color:var(--muted);cursor:pointer}
.icon-btn{background:none;border:none;font-size:18px}
.menu-btn{display:none}
.layout{display:flex;min-height:calc(100vh - 52px)}
.sidebar{width:200px;background:#fff;border-right:1px solid var(--border);padding:14px 10px;display:flex;flex-direction:column;flex-shrink:0}
.nav-item{display:block;padding:10px 12px;border-radius:8px;color:var(--text);text-decoration:none;font-size:14px;cursor:pointer}
.nav-item:hover{background:var(--bg)}
.nav-item.active{background:#eff6ff;color:var(--primary);font-weight:600}
.sidebar-foot{margin-top:auto;border-top:1px solid var(--border);padding-top:10px}
.sidebar-foot a{display:block;padding:8px 12px;color:var(--muted);font-size:13px;cursor:pointer;text-decoration:none}
.sidebar-foot a:hover{color:var(--text)}
.main{flex:1;padding:16px 20px;min-width:0}
.toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.crumbs{flex:1;min-width:120px;font-size:14px;color:var(--muted)}
.crumbs b{color:var(--text)}
.crumbs a{color:var(--primary);text-decoration:none;cursor:pointer}
.toolbar-btns{display:flex;gap:8px}
.btn{padding:8px 14px;border:1px solid var(--border);background:#fff;border-radius:8px;font-size:13px}
.btn:hover{border-color:var(--primary);color:var(--primary)}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff}
.btn-danger{color:var(--danger);border-color:#fecaca}
.btn-danger-solid{background:var(--danger);border-color:var(--danger);color:#fff}
.btn-danger-solid:hover{background:#b91c1c;color:#fff}
.btn-sm{padding:4px 10px;font-size:12px;border-radius:6px}
.filterbar{display:flex;gap:6px;align-items:center;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-bottom:12px}
.chip{border:1px solid var(--border);background:#fff;border-radius:14px;padding:3px 12px;font-size:12px;color:var(--muted)}
.chip.active{background:var(--primary);border-color:var(--primary);color:#fff}
.upload-tip{font-size:12px;color:var(--muted);margin-bottom:8px;min-height:16px}

/* ===== 文件夹/文件列表 ===== */
.section-title{font-weight:600;margin:14px 0 8px;font-size:14px;color:var(--text)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.folder-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:14px;cursor:pointer;position:relative}
.folder-card:hover{border-color:var(--primary);box-shadow:0 2px 10px rgba(37,99,235,.08)}
.folder-ico{font-size:26px}
.folder-name{font-weight:600;margin-top:6px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.folder-meta{font-size:12px;color:var(--muted);margin-top:4px}
.badge{display:inline-block;font-size:11px;padding:1px 7px;border-radius:10px;margin-left:4px;vertical-align:middle}
.badge-shared{background:#fef3c7;color:#b45309}
.badge-perm{background:#e0e7ff;color:#3730a3}
.badge-pin{background:#fce7f3;color:#be185d}
.badge-star{background:#fef9c3;color:#a16207}

/* 编辑菜单（编辑文件夹 / 文件更多操作） */
.edit-list{display:flex;flex-direction:column;gap:8px}
.edit-item{text-align:left;padding:12px 14px;border:1px solid var(--border);border-radius:8px;background:#fff;font-size:14px}
.edit-item:hover{border-color:var(--primary);color:var(--primary)}
.edit-danger{color:var(--danger);border-color:#fecaca}
.edit-danger:hover{color:var(--danger);border-color:var(--danger)}
.mini-btn{border:1px solid var(--border);background:#fff;border-radius:6px;font-size:11px;padding:2px 7px}
.mini-btn:hover{border-color:var(--primary);color:var(--primary)}
.mini-btn.on{color:var(--primary);border-color:var(--primary)}

.file-table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.file-table th{font-size:12px;color:var(--muted);text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);font-weight:500}
.file-table td{padding:10px 12px;border-bottom:1px solid #f3f4f6;font-size:13px}
.file-table tr:hover td{background:#f8fafc}
.file-name{display:flex;align-items:center;gap:8px;cursor:pointer;max-width:340px}
.file-name .fname{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-name:hover .fname{color:var(--primary)}
.fico{font-size:18px;flex-shrink:0}
.fsize{color:var(--muted);font-size:12px}
.ftime{color:var(--muted);font-size:12px;white-space:nowrap}
.row-acts{white-space:nowrap}
.row-acts button{margin-right:2px}
.star-on{color:#f59e0b}
.empty{padding:60px 0;text-align:center;color:var(--muted)}
.empty .big{font-size:44px;margin-bottom:10px}

/* ===== 弹窗 ===== */
.modal-mask{position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:50;display:none;align-items:center;justify-content:center;padding:16px}
.modal-mask.show{display:flex}
.modal{background:#fff;border-radius:14px;padding:22px;width:100%;max-width:520px;max-height:88vh;overflow:auto;position:relative}
.modal h3{margin-bottom:14px;font-size:16px}
.modal .close{position:absolute;top:12px;right:14px;border:none;background:none;font-size:20px;color:var(--muted)}
.modal input[type=text],.modal input[type=password],.modal select{width:100%;padding:9px 11px;border:1px solid var(--border);border-radius:8px;margin-bottom:10px;font-size:14px;outline:none}
.member-row{display:flex;align-items:center;gap:8px;padding:8px 4px;border-bottom:1px solid #f3f4f6}
.member-row label{flex:1}
.member-row select{width:auto;margin:0}
.modal-acts{display:flex;gap:10px;justify-content:flex-end;margin-top:16px}
.field-hint{font-size:12px;color:var(--muted);margin:-4px 0 12px}
/* 新建文件夹：个人/共享类型选择 */
.type-pick{display:flex;gap:10px;margin-bottom:12px}
.type-opt{flex:1;border:2px solid var(--border);border-radius:10px;padding:10px 12px;cursor:pointer;transition:border-color .15s,background .15s;user-select:none}
.type-opt:hover{border-color:#c7d2fe}
.type-opt.active{border-color:var(--primary);background:#eff6ff}
.type-opt .t{font-size:14px;font-weight:600;color:var(--text)}
.type-opt .d{font-size:12px;color:var(--muted);margin-top:3px}
/* 新建共享文件夹时的成员选择列表 */
.nf-member-list{max-height:34vh;overflow:auto;border:1px solid var(--border);border-radius:8px;padding:6px;margin-bottom:12px}
.inherit-tip{margin:0 0 10px}
/* 版本号（确认钉钉/微信内嵌浏览器是否加载新版本） */
.ver-tag{display:block;font-size:11px;color:var(--muted);text-align:center;margin-top:12px;letter-spacing:.3px}

/* ICP 备案号页脚（工信部要求常驻展示） */
.icp-footer{position:fixed;left:0;right:0;bottom:0;z-index:5;text-align:center;padding:5px 0 6px;font-size:11px;background:transparent;pointer-events:none}
.icp-footer a{color:var(--muted);text-decoration:none;pointer-events:auto}
.icp-footer a:hover{color:var(--primary,#2f6bff)}
.sidebar-foot .ver-tag{text-align:left;margin-top:8px;padding-left:2px}
/* 共享文件夹成员条 */
.member-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;background:#eff6ff;border:1px solid #dbeafe;border-radius:8px;padding:8px 12px;margin:0 0 12px;font-size:13px;color:#1e40af}
.member-bar .mb-txt{flex:1;min-width:0}
.member-bar .mini-btn{flex-shrink:0}
.prompt-row{display:flex;gap:8px;align-items:flex-start}
.prompt-row input{flex:1;width:auto;margin-bottom:10px}
.prompt-clear{margin-bottom:10px;white-space:nowrap}
.recycle-acts{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:6px 0 4px}
.chk-all{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);cursor:pointer}
.rec-cell{display:flex;align-items:center;gap:8px}
.preview-box{background:#f8fafc;border-radius:8px;display:flex;align-items:center;justify-content:center;overflow:auto;max-height:60vh}
.preview-box img,.preview-box video{max-width:100%;max-height:60vh}
.preview-box iframe{width:100%;height:60vh;border:none}
.preview-fallback{text-align:center;padding:30px}
.log-row{display:flex;gap:10px;padding:7px 0;border-bottom:1px solid #f3f4f6;font-size:13px}
.log-row .t{color:var(--muted);white-space:nowrap;font-size:12px}

/* ===== toast ===== */
.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(20px);background:#1f2937;color:#fff;
  padding:10px 20px;border-radius:24px;font-size:13px;opacity:0;pointer-events:none;transition:.25s;z-index:99;max-width:80vw}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== 移动端 H5 适配 ===== */
.more-btn{display:none}
@media (max-width:768px){
  .menu-btn{display:block}
  .sidebar{position:fixed;left:0;top:52px;bottom:0;z-index:30;transform:translateX(-100%);transition:.25s;box-shadow:4px 0 20px rgba(0,0,0,.1)}
  .sidebar.open{transform:none}
  .main{padding:12px}
  /* 顶栏紧凑化：小屏不溢出、可正常缩放 */
  .topbar{gap:8px;padding:0 10px}
  .search{padding:7px 12px;font-size:13px}
  .user-chip{margin-left:0;max-width:86px;overflow:hidden;text-overflow:ellipsis;font-size:12px}
  .logo{font-size:14px}
  .grid{grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:8px}
  .folder-card{padding:10px}
  .folder-ico{font-size:22px}
  .folder-name{font-size:13px}
  .section-title{margin:12px 0 6px}
  .btn{padding:7px 11px;font-size:12px}
  .file-table th:nth-child(3),.file-table td:nth-child(3),
  .file-table th:nth-child(4),.file-table td:nth-child(4){display:none}
  .file-table td{padding:9px 8px}
  .file-name{max-width:150px;display:inline-flex}
  /* 手机端：行内操作按钮隐藏，用「⋯ 更多」打开操作菜单（预览/下载/改名/删除…） */
  .more-btn{display:inline-block;margin-top:6px;padding:5px 12px;font-size:12px}
  .toolbar{gap:8px}
  .toolbar-btns{gap:6px;flex-wrap:wrap}
  .toolbar-btns .btn{padding:7px 10px;font-size:12px}
  .filterbar{gap:5px}
  .chip{padding:4px 11px}
  .modal{padding:18px 14px;max-height:92vh}
  .empty{padding:40px 0;font-size:13px}
  .empty .big{font-size:36px}
}
/* 超窄屏（<360px）再收紧 */
@media (max-width:360px){
  .logo{display:none}
  .grid{grid-template-columns:repeat(2,1fr)}
  .user-chip{max-width:70px}
}