/* 老李云 - 样式表 */
:root{
  --bg:#eef2f7;
  --card:#ffffff;
  --text:#1f2933;
  --muted:#6b7785;
  --border:#e4e9f0;
  --primary:#1f7ae0;
  --primary-dark:#1565c0;
  --primary-soft:#e8f1fc;
  --accent:#f59f00;
  --danger:#e03131;
  --ok:#2f9e44;
  --radius:12px;
  --shadow:0 4px 18px rgba(20,45,80,.08);
  --shadow-lg:0 12px 40px rgba(20,45,80,.16);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);font-size:14px;line-height:1.5;
}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}

/* ---------- 品牌 ---------- */
.brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:18px;color:var(--text)}
.brand:hover{text-decoration:none}
.logo{
  width:32px;height:32px;display:grid;place-items:center;border-radius:9px;
  background:linear-gradient(135deg,var(--primary),#4dabf7);color:#fff;font-size:18px;
}
.brand-name{letter-spacing:.5px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:6px;justify-content:center;
  padding:8px 16px;border:1px solid var(--border);border-radius:9px;background:#fff;
  color:var(--text);font-size:14px;cursor:pointer;transition:.15s;white-space:nowrap;
}
.btn:hover{border-color:#c7d2e0;background:#f7f9fc}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));border-color:transparent;color:#fff}
.btn-primary:hover{filter:brightness(1.05);background:linear-gradient(135deg,var(--primary),var(--primary-dark))}
.btn-block{width:100%}
.btn-lg{padding:13px 20px;font-size:15px}
.btn-sm{padding:5px 12px;font-size:13px}
.btn-ghost{background:transparent;border-color:transparent;color:var(--muted)}
.btn-ghost:hover{background:#eef2f7}
.btn-danger-ghost{color:var(--danger)}
.icon-btn{background:transparent;border:none;cursor:pointer;font-size:16px;color:var(--muted);padding:4px 8px;border-radius:7px}
.icon-btn:hover{background:#eef2f7}

/* ---------- 表单 ---------- */
.field{display:block;margin-bottom:14px}
.field>span{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.field input,.field select,.search input{
  width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:9px;
  font-size:14px;background:#fff;outline:none;transition:.15s;
}
.field input:focus,.field select:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}

.msg{padding:0;font-size:13px;margin-bottom:10px;min-height:0}
.msg-err{color:var(--danger)}
.msg-ok{color:var(--ok)}

/* ---------- 登录注册 ---------- */
.auth-page{min-height:100vh;display:grid;place-items:center;
  background:linear-gradient(135deg,#e7f0fb,#eef2f7 60%);padding:20px}
.auth-card{width:100%;max-width:380px;background:var(--card);border-radius:16px;
  box-shadow:var(--shadow-lg);padding:36px 32px}
.auth-card .brand{font-size:22px;justify-content:center;margin-bottom:6px}
.auth-sub{text-align:center;color:var(--muted);margin:0 0 24px}
.auth-foot{text-align:center;margin-top:18px;color:var(--muted);font-size:13px}

/* ---------- 顶栏 ---------- */
.topbar{
  height:60px;background:#fff;border-bottom:1px solid var(--border);
  display:flex;align-items:center;gap:20px;padding:0 24px;position:sticky;top:0;z-index:20;
}
.topbar.simple{justify-content:flex-start}
.search{flex:1;max-width:420px;display:flex;gap:6px}
.search input{flex:1}
.user-menu{margin-left:auto;display:flex;align-items:center;gap:18px}
.storage-mini{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
.storage-bar{width:90px;height:6px;background:#e7edf5;border-radius:4px;overflow:hidden}
.storage-bar>i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--primary),#4dabf7);transition:width .3s}

.dropdown{position:relative}
.user-btn{background:transparent;border:none;cursor:pointer;font-size:14px;color:var(--text);padding:6px 10px;border-radius:8px}
.user-btn:hover{background:#eef2f7}
.dropdown-menu{
  position:absolute;right:0;top:110%;background:#fff;border:1px solid var(--border);
  border-radius:10px;box-shadow:var(--shadow);min-width:140px;padding:6px;display:none;flex-direction:column;
}
.dropdown:hover .dropdown-menu{display:flex}
.dropdown-menu a{padding:9px 12px;border-radius:7px;color:var(--text);font-size:13px}
.dropdown-menu a:hover{background:#eef2f7;text-decoration:none}

/* ---------- 主容器 ---------- */
.container{max-width:1080px;margin:24px auto;padding:0 24px}
.toolbar{display:flex;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.toolbar-sep{flex:1}
.page-title{margin:0 0 18px;font-size:20px}

/* 面包屑 */
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:4px;margin-bottom:12px;font-size:14px}
.crumb{color:var(--primary);cursor:pointer}
.crumb.current{color:var(--muted);cursor:default}
.crumb-sep{color:#c2cbd6;margin:0 2px}

/* 拖拽区 / 文件列表 */
.dropzone{background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);min-height:300px;position:relative;overflow:hidden}
.dropzone.dragover{outline:2px dashed var(--primary);outline-offset:-8px;background:var(--primary-soft)}
.file-list{display:flex;flex-direction:column}
.row{display:grid;grid-template-columns:1fr 110px 110px 230px;align-items:center;
  padding:0 16px;height:52px;border-bottom:1px solid #f0f3f7;transition:background .12s}
.row:hover{background:#f7f9fc}
.row.selected{background:var(--primary-soft)}
.cell{overflow:hidden}
.cell.name{display:flex;align-items:center;gap:10px;min-width:0}
.cell.size,.cell.date{color:var(--muted);font-size:13px}
.cell.ops{display:flex;gap:4px;justify-content:flex-end;flex-wrap:wrap}
.ic{font-size:20px;flex:none}
.fname{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.folder-row .cell.name{cursor:pointer}
.folder-row .fname{font-weight:500}
.chk{width:15px;height:15px;flex:none;cursor:pointer}
.badge{font-size:11px;color:var(--primary);background:var(--primary-soft);padding:1px 7px;border-radius:10px;flex:none}
.op{font-size:13px;color:var(--muted);background:transparent;border:none;cursor:pointer;padding:4px 7px;border-radius:6px}
.op:hover{background:#e9eef5;color:var(--text);text-decoration:none}
.op-danger:hover{background:#fdeced;color:var(--danger)}
.empty-hint{padding:60px 20px;text-align:center;color:var(--muted)}

/* ---------- 上传面板 ---------- */
.upload-panel{position:fixed;right:24px;bottom:24px;width:340px;background:#fff;border:1px solid var(--border);
  border-radius:12px;box-shadow:var(--shadow-lg);z-index:40;overflow:hidden}
.upload-head{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;
  border-bottom:1px solid var(--border);font-weight:600;font-size:14px}
#uploadItems{max-height:260px;overflow:auto}
.up-item{padding:10px 14px;border-bottom:1px solid #f2f4f8}
.up-name{font-size:13px;margin-bottom:6px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.up-bar{height:5px;background:#eef2f7;border-radius:4px;overflow:hidden;margin-bottom:4px}
.up-bar>i{display:block;height:100%;width:0;background:var(--primary);transition:width .2s}
.up-status{font-size:12px;color:var(--muted)}
.up-item.done .up-bar>i{background:var(--ok)}
.up-item.done .up-status{color:var(--ok)}
.up-item.fail .up-bar>i{background:var(--danger)}
.up-item.fail .up-status{color:var(--danger)}

/* ---------- 弹窗 ---------- */
.modal{position:fixed;inset:0;background:rgba(20,30,50,.45);display:grid;place-items:center;z-index:60;padding:20px}
.modal-card{width:100%;max-width:420px;background:#fff;border-radius:14px;box-shadow:var(--shadow-lg);overflow:hidden}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--border)}
.modal-head h3{margin:0;font-size:16px}
.modal-body{padding:20px}
.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:8px}
.share-result{margin-top:16px;padding-top:16px;border-top:1px dashed var(--border)}
.share-link{display:flex;gap:8px;margin-bottom:8px}
.share-link input{flex:1;padding:9px 12px;border:1px solid var(--border);border-radius:8px;background:#f7f9fc}

/* ---------- 分享页 ---------- */
.share-page{background:linear-gradient(135deg,#e7f0fb,#eef2f7 60%);min-height:100vh}
.share-wrap{max-width:640px;margin:60px auto;padding:0 20px}
.share-card{background:#fff;border-radius:16px;box-shadow:var(--shadow-lg);padding:32px}
.share-card.center{text-align:center}
.big-emoji{font-size:52px;margin-bottom:10px}
.big-icon{font-size:46px}
.pwd-form{display:flex;gap:8px;justify-content:center;margin-top:18px}
.pwd-form input{padding:10px 14px;border:1px solid var(--border);border-radius:9px;font-size:15px;text-align:center;width:160px}
.share-file-head,.share-folder-head{display:flex;align-items:center;gap:18px;margin-bottom:24px}
.share-fname{margin:0 0 6px;word-break:break-all}
.share-meta{color:var(--muted);font-size:13px}
.share-file-list{display:flex;flex-direction:column;gap:2px}
.share-row{display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:9px}
.share-row:hover{background:#f7f9fc}
.share-row .fname{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.share-row .size{color:var(--muted);font-size:13px;flex:none}

/* ---------- 数据表（分享/用户） ---------- */
.data-table{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.dt-head,.dt-row{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr 1.4fr;align-items:center;padding:0 18px;min-height:50px;gap:10px}
.dt-head{background:#f7f9fc;font-size:13px;color:var(--muted);font-weight:600}
.dt-row{border-top:1px solid #f0f3f7}
.dt-row:hover{background:#fafbfd}
.dt-row>div{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dt-ops{display:flex;gap:4px}
.dt-empty{padding:50px;text-align:center;color:var(--muted)}

/* ---------- 管理后台 ---------- */
.stat-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}
.stat-card{background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);
  padding:18px 20px;display:flex;flex-direction:column;gap:4px}
.stat-card .num{font-size:26px;font-weight:700;color:var(--primary)}
.stat-card .lbl{color:var(--muted);font-size:13px}
.admin-tabs{display:flex;gap:6px;margin-bottom:16px}
.tab{padding:8px 18px;border:none;background:transparent;cursor:pointer;border-radius:9px;color:var(--muted);font-size:14px}
.tab.active{background:#fff;color:var(--primary);font-weight:600;box-shadow:var(--shadow)}
.settings-form{background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);padding:24px;max-width:520px}
.admin-users-head{grid-template-columns:60px 1.4fr 1.6fr 1fr .8fr 1.4fr!important}

/* ---------- 提示 ---------- */
.toast{position:fixed;left:50%;bottom:32px;transform:translateX(-50%);background:#222b3a;color:#fff;
  padding:11px 22px;border-radius:24px;font-size:14px;z-index:100;box-shadow:var(--shadow-lg)}
.toast-err{background:var(--danger)}
.toast-ok{background:#2b3243}

/* ---------- 响应式 ---------- */
@media(max-width:720px){
  .topbar{gap:12px;padding:0 14px}
  .search{display:none}
  .container{padding:0 14px}
  .row{grid-template-columns:1fr auto;grid-auto-rows:min-content}
  .cell.size,.cell.date{display:none}
  .cell.ops{grid-column:2}
  .stat-cards{grid-template-columns:repeat(2,1fr)}
  .dt-head{display:none}
  .dt-row{grid-template-columns:1fr 1fr;padding:12px 14px;gap:6px}
  .admin-users-head{grid-template-columns:1fr 1fr!important}
}