/* =========================================================
   OSS 云存储 · 后台管理面板样式（蓝色系，对齐宣传页）
   ========================================================= */
:root{
  --primary:#2f7bff; --primary-d:#1b5fd6; --primary-l:#eaf2ff;
  --cyan:#19b6d8; --green:#1fb378; --purple:#7b5cff; --orange:#ff9a3c;
  --ink:#1f2a44; --sub:#5a6b8c; --muted:#9aa7bf;
  --line:#e1e8f5; --bg:#eef4ff; --card:#fff;
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font:14px/1.6 "Microsoft YaHei",system-ui,sans-serif;background:var(--bg);color:var(--ink)}
a{color:var(--primary);text-decoration:none}
.mono{font-family:Consolas,monospace}
.muted{color:var(--muted)}

/* ---- 登录 ---- */
.login-bg{min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(1200px 600px at 20% 10%,#d6e7ff,transparent),radial-gradient(900px 500px at 90% 90%,#e3f2ff,transparent),var(--bg)}
.login-card{width:380px;background:var(--card);border-radius:var(--radius);box-shadow:0 18px 50px rgba(47,123,255,.22);padding:34px 32px}
.login-head{text-align:center;margin-bottom:22px}
.logo{width:64px;height:64px;line-height:64px;text-align:center;font-size:34px;margin:0 auto 12px;border-radius:16px;background:linear-gradient(135deg,var(--primary),var(--cyan));color:#fff}
.login-head h1{font-size:22px}.login-head p{color:var(--muted);font-size:13px;margin-top:6px}
.login-foot{text-align:center;margin-top:18px;font-size:13px}

/* ---- 布局 ---- */
.shell{display:flex;min-height:100vh}
.side{width:230px;background:var(--card);border-right:1px solid var(--line);position:sticky;top:0;height:100vh;display:flex;flex-direction:column}
.brand{display:flex;align-items:center;gap:10px;padding:20px 22px;font-size:18px;font-weight:800;color:var(--primary-d)}
.brand span{color:var(--ink)}
.side nav{flex:1;padding:6px 14px}
.menu-item{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:9px;color:var(--sub);font-weight:600;margin-bottom:4px;transition:.15s}
.menu-item:hover{background:var(--primary-l);color:var(--primary-d)}
.menu-item.on{background:var(--primary);color:#fff}
.menu-item i{width:18px;height:18px;display:inline-block}
.menu-item i svg{width:100%;height:100%;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.side-foot{padding:16px 22px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
.node-tip{margin-bottom:8px}.node-tip b{color:var(--primary-d)}
.side-foot a{font-size:13px}
.main{flex:1;padding:0}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:20px 28px;background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.topbar h1{font-size:19px;font-weight:700}
.topbar-right{display:flex;align-items:center;gap:10px}
.avatar{width:36px;height:36px;line-height:36px;text-align:center;border-radius:50%;background:var(--primary);color:#fff;font-weight:700}
.who{font-size:14px;font-weight:600}
.content{padding:24px 28px}

/* ---- 卡片 / 统计 ---- */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:20px}
.stat-card{background:var(--card);border-radius:var(--radius);padding:18px;display:flex;align-items:center;gap:14px;box-shadow:0 4px 14px rgba(47,123,255,.08)}
.stat-ic{width:48px;height:48px;line-height:48px;text-align:center;border-radius:12px;font-size:22px;color:#fff}
.ic-blue{background:var(--primary)}.ic-cyan{background:var(--cyan)}.ic-green{background:var(--green)}.ic-purple{background:var(--purple)}
.stat-num{font-size:26px;font-weight:800;color:var(--ink)}
.stat-label{font-size:12px;color:var(--muted)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}

/* ---- 面板 ---- */
.panel{background:var(--card);border-radius:var(--radius);box-shadow:0 4px 14px rgba(47,123,255,.08);margin-bottom:16px;overflow:hidden}
.panel-hd{padding:16px 20px;border-bottom:1px solid var(--line)}.panel-hd h3{font-size:15px;font-weight:700}
.panel-bd{padding:20px}
.tip-box .panel-bd p{font-size:13px;line-height:1.9}

/* ---- 表格 ---- */
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:13px}
.table th{color:var(--sub);font-weight:700;background:#f7faff}
.table tr:hover td{background:#f9fbff}
.acts{white-space:nowrap}
.inl{display:inline}

/* ---- 标签 ---- */
.tag{display:inline-block;padding:3px 9px;border-radius:20px;font-size:12px;font-weight:600;background:#eef2f8;color:var(--sub)}
.b-blue{background:var(--primary-l);color:var(--primary-d)}.b-cyan{background:#e3f8fc;color:#0e8ba3}
.b-purple{background:#efebff;color:#5b3fd6}.b-green{background:#e6f7ef;color:#0c6b46}.b-gray{background:#eef2f8;color:#7a8aa5}

/* ---- 工具条 ---- */
.toolbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.filters{display:flex;gap:8px;flex-wrap:wrap}
.chip{padding:7px 15px;border-radius:20px;background:var(--card);border:1px solid var(--line);color:var(--sub);font-size:13px;font-weight:600}
.chip.on{background:var(--primary);color:#fff;border-color:var(--primary)}
.pager{display:flex;gap:6px;margin-top:14px;justify-content:center}
.pg{width:34px;height:34px;line-height:32px;text-align:center;border:1px solid var(--line);border-radius:8px;background:var(--card);font-size:13px}
.pg.on{background:var(--primary);color:#fff;border-color:var(--primary)}
.thumb{width:44px;height:44px;object-fit:cover;border-radius:8px;background:#f0f3f8}
.preview-v,.preview-a{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;background:#f0f3f8;color:var(--sub);font-size:18px}

/* ---- 表单 ---- */
.field{margin-bottom:14px}
.field label{display:block;font-size:12px;color:var(--sub);margin-bottom:6px;font-weight:600}
.field input,.field select{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:9px;font-size:14px;color:var(--ink);background:#fff;outline:none}
.field input:focus,.field select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,123,255,.14)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px 20px}
.form-actions{display:flex;align-items:center;gap:16px}
.chk-label{font-size:13px;color:var(--sub);margin:0}
.form-row{display:flex;align-items:flex-end;gap:20px}
.form-row .field{margin:0}
.hint-box{font-size:12px;color:var(--sub);line-height:1.8;background:#f7faff;border:1px dashed var(--line);padding:12px;border-radius:9px}

/* ---- 按钮 ---- */
.btn{background:var(--primary);color:#fff;border:none;padding:11px 22px;border-radius:9px;font-size:14px;font-weight:700;cursor:pointer;transition:.15s}
.btn:hover{background:var(--primary-d)}
.btn-block{width:100%;margin-top:10px}
.btn-s{background:#fff;border:1px solid var(--line);color:var(--sub);padding:6px 13px;border-radius:7px;font-size:12px;font-weight:600;cursor:pointer}
.btn-s:hover{border-color:var(--primary);color:var(--primary)}
.btn-s.b-danger{color:#e5484d;border-color:#f5c2c4}.btn-s.b-danger:hover{background:#fdecec}
.copy{cursor:pointer;font-size:12px;color:var(--primary)}

/* ---- 提示 ---- */
.alert{padding:13px 15px;border-radius:9px;margin-bottom:16px;font-size:13px}
.alert.ok{background:#e6f7ef;color:#0c6b46;border:1px solid #b6e4cc}
.alert.err{background:#fdecec;color:#9a2a2d;border:1px solid #f5c2c4}
.code{background:#0f1b3a;color:#cfe0ff;padding:14px;border-radius:9px;font-family:Consolas,monospace;font-size:12.5px;line-height:1.8;overflow:auto;white-space:pre}
.doc-list{margin:0 0 0 18px;font-size:13px;line-height:1.9}

@media(max-width:860px){
  .cards,.grid2{grid-template-columns:1fr 1fr}
  .side{width:72px}.brand span,.menu-item span,.node-tip,.side-foot a{display:none}
  .form-grid{grid-template-columns:1fr}
}