:root{
  --bg:#f4f6fa; --panel:#ffffff; --border:#e4e8f0; --text:#1f2937; --muted:#6b7280;
  --brand:#1565d8; --brand-soft:#e8f1ff; --ok:#1a9c5b; --ok-soft:#e6f7ef;
  --warn:#d98200; --warn-soft:#fff4e0; --danger:#d64545; --danger-soft:#fdecec;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);
  font-family:"Microsoft YaHei","PingFang SC",-apple-system,Segoe UI,sans-serif;font-size:14px}
a{color:inherit;text-decoration:none}

/* 登录 */
#login{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1565d8,#0d3f8a)}
.login-card{width:340px;background:#fff;border-radius:12px;padding:28px;box-shadow:0 18px 40px rgba(0,0,0,.25)}
.login-card h2{margin:0 0 4px;font-size:20px}
.login-card p{margin:0 0 18px;color:var(--muted);font-size:13px}

/* 布局 */
#app{display:none;min-height:100vh}
.sidebar{position:fixed;left:0;top:0;bottom:0;width:190px;background:#12233f;color:#cdd7e6;padding:14px 0}
.sidebar .logo{padding:6px 18px 16px;font-size:16px;font-weight:700;color:#fff}
.sidebar .logo small{display:block;font-size:11px;font-weight:400;color:#7f92ad;margin-top:3px}
.sidebar nav a{display:block;padding:10px 18px;color:#cdd7e6;font-size:14px;border-left:3px solid transparent}
.sidebar nav a:hover{background:#1b3157;color:#fff}
.sidebar nav a.active{background:#1b3157;color:#fff;border-left-color:#4d94ff}
.main{margin-left:190px;padding:18px 22px 40px}
.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.topbar h1{margin:0;font-size:19px}
.user-chip{color:var(--muted);font-size:13px}
.user-chip b{color:var(--text)}

.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:16px;margin-bottom:16px}
.card h3{margin:0 0 12px;font-size:15px}

.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-bottom:16px}
.stat{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:14px 16px}
.stat .label{color:var(--muted);font-size:12px}
.stat .value{font-size:24px;font-weight:700;margin-top:6px}
.stat.in .value{color:var(--ok)} .stat.out .value{color:var(--brand)}
.stat.warn .value{color:var(--warn)} .stat.danger .value{color:var(--danger)}

.toolbar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:12px}
input,select,button,textarea{font-family:inherit;font-size:14px}
input[type=text],input[type=password],input[type=date],input[type=number],select{
  padding:7px 10px;border:1px solid var(--border);border-radius:6px;background:#fff;color:var(--text)}
input:focus,select:focus{outline:2px solid var(--brand-soft);border-color:var(--brand)}
button{padding:7px 14px;border:0;border-radius:6px;background:var(--brand);color:#fff;cursor:pointer}
button:hover{filter:brightness(1.07)}
button.secondary{background:#eef1f6;color:var(--text)}
button.danger{background:var(--danger)}
button.sm{padding:4px 9px;font-size:13px}
button:disabled{opacity:.55;cursor:not-allowed}

table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:9px 10px;text-align:left;border-bottom:1px solid var(--border);white-space:nowrap}
th{background:#f7f9fc;color:var(--muted);font-weight:600}
tbody tr:hover{background:#fafbfe}
td.num,th.num{text-align:right}
.empty{padding:26px;text-align:center;color:var(--muted)}

.tag{display:inline-block;padding:2px 8px;border-radius:20px;font-size:12px}
.tag.ok{background:var(--ok-soft);color:var(--ok)}
.tag.warn{background:var(--warn-soft);color:var(--warn)}
.tag.danger{background:var(--danger-soft);color:var(--danger)}
.tag.info{background:var(--brand-soft);color:var(--brand)}

.pager{display:flex;gap:8px;align-items:center;justify-content:flex-end;margin-top:12px;color:var(--muted)}
.hidden{display:none !important}

/* 趋势图 */
.bars{display:flex;align-items:flex-end;gap:3px;height:150px;padding:6px 0;border-bottom:1px solid var(--border)}
.bars .col{flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:3px}
.bars .bar{width:100%;background:var(--ok);border-radius:2px 2px 0 0;min-height:2px}
.bars .bar.out{background:var(--brand)}
.bars .lbl{font-size:10px;color:var(--muted);transform:rotate(-60deg);margin-top:6px}

.modal{position:fixed;inset:0;background:rgba(15,23,42,.45);display:flex;align-items:center;justify-content:center;z-index:50}
.modal .box{background:#fff;border-radius:10px;padding:20px;width:420px;max-height:86vh;overflow:auto}
.modal .box h3{margin:0 0 14px}
.field{margin-bottom:11px}
.field label{display:block;font-size:12px;color:var(--muted);margin-bottom:4px}
.field input,.field select{width:100%}
.modal-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:16px}

#toast{position:fixed;right:20px;bottom:20px;z-index:99;display:flex;flex-direction:column;gap:8px}
.toast{background:#12233f;color:#fff;padding:10px 16px;border-radius:8px;font-size:13px;box-shadow:0 8px 20px rgba(0,0,0,.2)}
.toast.err{background:var(--danger)}