:root{
  --bg:#f4f5f7; --panel:#ffffff; --ink:#16222e; --muted:#5d6b78; --line:#dde3e8;
  --brand:#16222e; --brand-d:#0b1520; --acc:#e8641b; --ok:#16a34a; --warn:#d97706; --bad:#dc2626;
  --soft:#fdf0e7; --shadow:0 1px 3px rgba(22,34,46,.07),0 1px 2px rgba(22,34,46,.04);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink);font-size:14px}
a{color:var(--acc);text-decoration:none}
/* sidebar */
.sidebar{position:fixed;top:0;left:0;bottom:0;width:224px;background:#16222e;color:#aeb9c3;display:flex;flex-direction:column;padding:14px 10px;z-index:40}
.brand{font-size:16px;font-weight:800;color:#fff;padding:10px 8px 4px;letter-spacing:.02em}
.brand small{display:block;font-size:9.5px;color:#5f7180;letter-spacing:.14em;font-weight:600;margin-top:2px}
.sidebar nav{display:flex;flex-direction:column;gap:2px;flex:1;overflow:auto;margin-top:10px}
.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:8px;color:#aeb9c3;cursor:pointer;font-size:13.5px;border-left:3px solid transparent}
.nav-item:hover{background:#1f3040;color:#fff}
.nav-item.active{background:#1f3040;color:#fff;border-left-color:var(--acc)}
.side-foot{margin-top:auto;padding-top:10px;border-top:1px solid #253749}
#user-box{color:#8fa5ba;font-size:12px;margin-bottom:6px;padding:0 8px}
.logout{display:block;padding:8px;color:#e08585;font-size:13px}
.main{margin-left:224px;min-height:100vh}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;background:var(--panel);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.topbar h1{font-size:17px;margin:0;letter-spacing:-.01em}
.content{padding:20px 24px;max-width:1280px}
/* hamburger (mobile) */
.mtoggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:7px 10px;font-size:16px;cursor:pointer}
.mmask{display:none}
/* cards */
.grid{display:grid;gap:14px}
.cards{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}
.card{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:16px;box-shadow:var(--shadow)}
.card .num{font-size:28px;font-weight:800;color:var(--ink)}
.card .lbl{color:var(--muted);margin-top:4px;font-size:12.5px}
.card.alert .num{color:var(--bad)}
.card.warn .num{color:var(--warn)}
.card h3{margin:0 0 12px;font-size:15px}
/* tables */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow);overflow:auto;margin-top:14px}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
th{background:#f8f9fa;color:var(--muted);font-weight:600;font-size:11.5px;text-transform:uppercase;letter-spacing:.05em;position:sticky;top:0}
tr:hover td{background:#fafbfc}
.cell-wrap{white-space:normal;max-width:320px}
/* buttons */
.btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:#fff;color:var(--ink);padding:8px 14px;border-radius:7px;cursor:pointer;font-size:13px;font-weight:600}
.btn:hover{background:#f6f7f8}
.btn.primary{background:var(--acc);border-color:var(--acc);color:#fff}
.btn.primary:hover{background:#cf5514}
.btn.dark{background:var(--brand);border-color:var(--brand);color:#fff}
.btn.sm{padding:5px 10px;font-size:12px}
.btn.danger{color:var(--bad);border-color:#fecaca}
.btn.ghost{background:transparent;border-color:transparent;color:var(--acc)}
.wa{display:inline-flex;align-items:center;gap:4px;background:#e7f8ee;color:#1d8a48;border:1px solid #bfe6cd;padding:4px 10px;border-radius:6px;font-size:12px;font-weight:600;cursor:pointer}
.wa:hover{background:#d5f2e0}
.em{display:inline-flex;align-items:center;gap:4px;background:#eef3fb;color:#1d5ea8;border:1px solid #c8d9f0;padding:4px 10px;border-radius:6px;font-size:12px;font-weight:600;cursor:pointer}
.em:hover{background:#dfeaf8}
/* forms */
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:10px}
.input,.select,.textarea{border:1px solid var(--line);border-radius:7px;padding:8px 10px;font-size:13px;background:#fff;color:var(--ink)}
.input:focus,.select:focus,.textarea:focus{outline:2px solid var(--soft);border-color:var(--acc)}
.textarea{min-height:110px;width:100%;font-family:inherit}
.field{display:flex;flex-direction:column;gap:4px;margin-bottom:12px}
.field label{font-size:12px;color:var(--muted);font-weight:600}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
/* badges */
.badge{display:inline-block;padding:2px 9px;border-radius:5px;font-size:11.5px;font-weight:700}
.b-bad{background:#fee2e2;color:#b91c1c}
.b-warn{background:#fef3c7;color:#92400e}
.b-ok{background:#dcfce7;color:#166534}
.b-brand{background:#fdeadd;color:#b35310}
.b-muted{background:#eef1f4;color:#475569}
/* priority pills T1/T2/T3 */
.t1{background:var(--acc);color:#fff}
.t2{background:#fdeadd;color:#b35310}
.t3{background:#eef1f4;color:#475569}
/* modal */
.modal-mask{position:fixed;inset:0;background:rgba(11,21,32,.55);display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}
.modal{background:#fff;border-radius:12px;width:min(660px,96vw);max-height:90vh;overflow:auto;padding:20px 22px;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.modal h3{margin:0 0 14px}
.modal-foot{display:flex;justify-content:flex-end;gap:10px;margin-top:16px}
/* toast */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);background:#16222e;color:#fff;padding:10px 18px;border-radius:9px;opacity:0;transition:.25s;z-index:99;pointer-events:none;font-size:13px}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.login-wrap{max-width:380px;margin:8vh auto;background:#fff;border:1px solid var(--line);border-radius:12px;padding:30px;box-shadow:var(--shadow)}
.login-wrap h2{margin:0 0 4px;letter-spacing:-.01em}
.login-wrap p{color:var(--muted);margin:0 0 18px;font-size:13px}
.muted{color:var(--muted)}
.empty{padding:40px;text-align:center;color:var(--muted)}
.tag{display:inline-block;background:#f1f4f6;border-radius:5px;padding:1px 7px;font-size:12px;margin:1px}
.pill{background:var(--soft);color:#b35310;border-radius:999px;padding:2px 10px;font-size:12px;font-weight:600}
/* dashboard KPI */
.kpi-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px}
.kpi{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:16px;box-shadow:var(--shadow);border-top:3px solid var(--brand)}
.kpi.a{border-top-color:var(--acc)}
.kpi.g{border-top-color:var(--ok)}
.kpi.r{border-top-color:var(--bad)}
.kpi .num{font-size:26px;font-weight:800}
.kpi .lbl{color:var(--muted);font-size:12.5px;margin-top:2px}
@media(max-width:880px){
  .mtoggle{display:inline-block}
  .sidebar{transform:translateX(-100%);transition:.25s}
  .sidebar.open{transform:translateX(0)}
  .mmask.show{display:block;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:35}
  .main{margin-left:0}
  .row{grid-template-columns:1fr}
  .content{padding:14px}
  th,td{white-space:normal}
}