:root{
  --bg:#f1f5f9; --card:#fff; --ink:#1e293b; --muted:#64748b; --line:#e2e8f0;
  --brand:#4f46e5; --brand2:#6366f1; --brand-d:#4338ca;
  --ok:#16a34a; --okbg:#dcfce7; --err:#dc2626; --errbg:#fee2e2;
  --warn:#d97706; --warnbg:#fef3c7; --info:#0369a1; --infobg:#e0f2fe;
  --radius:12px; --shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.04);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);font-size:14px;line-height:1.55}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{margin:0 0 .4em}

/* ---------- layout ---------- */
.layout{display:flex;min-height:100vh}
.sidebar{width:248px;background:#0f172a;color:#cbd5e1;display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;z-index:40}
.main{flex:1;margin-left:248px;display:flex;flex-direction:column;min-width:0}
.content{padding:22px;flex:1}
.page-foot{padding:14px 22px;color:var(--muted);font-size:12px;border-top:1px solid var(--line)}

/* ---------- sidebar ---------- */
.brand{display:flex;align-items:center;gap:10px;padding:18px 18px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{color:#fff;font-size:15px}
.brand-text small{color:#94a3b8;font-size:11px}
.logo-badge{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--brand2),var(--brand-d));color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:15px;flex:none}
.nav{padding:10px 10px;flex:1;overflow-y:auto}
.nav-item{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:9px;color:#cbd5e1;font-weight:500;margin-bottom:2px}
.nav-item:hover{background:rgba(255,255,255,.07);color:#fff;text-decoration:none}
.nav-item.active{background:var(--brand);color:#fff;box-shadow:var(--shadow)}
.nav-item .ic{width:20px;text-align:center;font-size:15px}
.nav-sep{font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:#64748b;padding:14px 12px 6px}
.sidebar-foot{padding:14px 16px;border-top:1px solid rgba(255,255,255,.08)}
.sidebar-foot a{color:#94a3b8;font-size:13px}
.sidebar-backdrop{display:none}

/* ---------- topbar ---------- */
.topbar{height:60px;background:var(--card);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:14px;padding:0 18px;position:sticky;top:0;z-index:30}
.topbar-title{font-size:17px;margin:0;flex:1}
.topbar-user{display:flex;align-items:center;gap:10px}
.u-name{font-weight:600}
.hamburger{display:none;background:none;border:0;font-size:22px;cursor:pointer;color:var(--ink)}

/* ---------- badges ---------- */
.badge{font-size:11px;font-weight:700;padding:3px 9px;border-radius:999px;text-transform:uppercase;letter-spacing:.03em}
.badge-admin{background:#ede9fe;color:#6d28d9}
.badge-op{background:#e0f2fe;color:#0369a1}
.pill{display:inline-block;font-size:11px;font-weight:600;padding:2px 8px;border-radius:999px;background:#f1f5f9;color:#475569}
.pill.ok{background:var(--okbg);color:var(--ok)} .pill.err{background:var(--errbg);color:var(--err)}
.pill.warn{background:var(--warnbg);color:var(--warn)} .pill.info{background:var(--infobg);color:var(--info)}

/* ---------- cards / grid ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:20px}
.card-head{padding:14px 18px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.card-head h3{margin:0;font-size:15px;flex:1}
.card-body{padding:18px}
.grid{display:grid;gap:16px}
.grid.cols-4{grid-template-columns:repeat(4,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px 18px}
.stat .s-label{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.04em}
.stat .s-value{font-size:26px;font-weight:800;margin-top:4px}
.stat .s-sub{color:var(--muted);font-size:12px;margin-top:2px}
.stat.brand{background:linear-gradient(135deg,var(--brand2),var(--brand-d));color:#fff;border:0}
.stat.brand .s-label,.stat.brand .s-sub{color:rgba(255,255,255,.85)}

/* ---------- tables ---------- */
.table-wrap{overflow-x:auto}
table.tbl{width:100%;border-collapse:collapse;font-size:13.5px}
table.tbl th,table.tbl td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
table.tbl th{background:#f8fafc;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.03em;font-weight:700}
table.tbl tbody tr:hover{background:#f8fafc}
table.tbl td.wrap{white-space:normal}

/* ---------- forms ---------- */
label{display:block;font-weight:600;margin:10px 0 5px;font-size:13px}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=date],input[type=time],input[type=url],select,textarea{
  width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:9px;font-size:14px;font-family:inherit;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(79,70,229,.12)}
textarea{min-height:110px;resize:vertical}
.row{display:flex;gap:14px;flex-wrap:wrap}
.row>.col{flex:1;min-width:180px}
.help{color:var(--muted);font-size:12px;margin-top:4px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:7px;justify-content:center;padding:9px 15px;border-radius:9px;border:1px solid transparent;font-weight:600;font-size:14px;cursor:pointer;background:#e2e8f0;color:var(--ink);transition:.12s}
.btn:hover{text-decoration:none;filter:brightness(.97)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-d)}
.btn-danger{background:var(--err);color:#fff}
.btn-success{background:var(--ok);color:#fff}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-sm{padding:6px 11px;font-size:12.5px}
.btn-block{width:100%}
.btn-xs{padding:4px 9px;font-size:12px;border-radius:7px}

/* ---------- alerts ---------- */
.alert{padding:12px 15px;border-radius:10px;margin-bottom:16px;font-weight:500;border:1px solid transparent}
.alert.success{background:var(--okbg);color:#166534;border-color:#bbf7d0}
.alert.error{background:var(--errbg);color:#991b1b;border-color:#fecaca}
.alert.warn{background:var(--warnbg);color:#92400e;border-color:#fde68a}
.alert.info{background:var(--infobg);color:#075985;border-color:#bae6fd}

/* ---------- pager ---------- */
.pager{display:flex;gap:5px;flex-wrap:wrap;margin-top:16px;align-items:center}
.pager a,.pager .cur,.pager .dis,.pager .gap{padding:6px 11px;border-radius:8px;border:1px solid var(--line);background:#fff;font-size:13px}
.pager .cur{background:var(--brand);color:#fff;border-color:var(--brand);font-weight:700}
.pager .dis{color:#cbd5e1}
.pager .gap{border:0;background:none}
.pager a:hover{background:#f1f5f9;text-decoration:none}

/* ---------- toolbar ---------- */
.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:16px}
.toolbar .spacer{flex:1}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px}
.tabs a{padding:8px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:600;font-size:13px;color:var(--ink)}
.tabs a.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.tabs a:hover{text-decoration:none}

/* ---------- column-copy grid (stored numbers) ---------- */
.col-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px}
.col-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px;text-align:center;box-shadow:var(--shadow)}
.col-card .cn{font-weight:800;font-size:16px}
.col-card .cc{font-size:11px;color:var(--muted);margin:3px 0 8px}
.col-card.used{border-color:#c7d2fe;background:#eef2ff}

/* ---------- login ---------- */
.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#312e81,#4f46e5)}
.login-card{background:#fff;width:360px;max-width:92vw;padding:30px;border-radius:16px;box-shadow:0 20px 50px rgba(0,0,0,.3)}
.login-brand{text-align:center;margin-bottom:18px}
.login-brand .logo-badge{margin:0 auto 10px;width:54px;height:54px;font-size:20px}
.login-brand h1{font-size:20px;margin:0}
.login-brand p{color:var(--muted);margin:2px 0 0;font-size:13px}

.empty{padding:40px;text-align:center;color:var(--muted)}
.muted{color:var(--muted)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.nowrap{white-space:nowrap}
.text-right{text-align:right}
.mb0{margin-bottom:0}

/* ---------- responsive ---------- */
@media(max-width:880px){
  .grid.cols-4{grid-template-columns:repeat(2,1fr)}
  .grid.cols-3{grid-template-columns:1fr}
  .grid.cols-2{grid-template-columns:1fr}
}
@media(max-width:760px){
  .sidebar{transform:translateX(-100%);transition:transform .2s;box-shadow:0 0 40px rgba(0,0,0,.4)}
  .sidebar.open{transform:translateX(0)}
  .main{margin-left:0}
  .hamburger{display:block}
  .sidebar-backdrop.show{display:block;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:35}
  .u-name{display:none}
}