:root{
  --bg:#0f172a; --panel:#1e293b; --panel-2:#243146; --border:#334155;
  --text:#e2e8f0; --muted:#94a3b8; --accent:#38bdf8; --accent-2:#0ea5e9;
  --green:#4ade80; --red:#f87171; --yellow:#fbbf24;
  --radius:10px;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

.app{display:flex;min-height:100vh}
.sidebar{width:220px;flex-shrink:0;background:var(--panel);border-right:1px solid var(--border);padding:20px 0;display:flex;flex-direction:column}
.sidebar .brand{padding:0 20px 20px;font-weight:800;font-size:16px;border-bottom:1px solid var(--border);margin-bottom:12px}
.sidebar .brand small{display:block;color:var(--muted);font-weight:400;font-size:11px;margin-top:2px}
.sidebar nav a{display:block;padding:10px 20px;color:var(--muted);font-weight:600;border-left:3px solid transparent}
.sidebar nav a:hover{color:var(--text);text-decoration:none;background:rgba(255,255,255,.03)}
.sidebar nav a.active{color:var(--text);border-left-color:var(--accent);background:rgba(56,189,248,.08)}
.sidebar .spacer{flex:1}
.sidebar .logout{padding:10px 20px;color:var(--red);font-weight:600}

.main{flex:1;padding:28px 32px;max-width:1200px}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;flex-wrap:wrap;gap:12px}
.topbar h1{font-size:20px;margin:0}
.topbar .actions{display:flex;gap:8px}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:24px}
.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px}
.card .label{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.04em;margin-bottom:6px}
.card .value{font-size:26px;font-weight:800}
.card .sub{color:var(--muted);font-size:12px;margin-top:4px}

.panel{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;margin-bottom:20px}
.panel h2{font-size:15px;margin:0 0 14px}

table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--border);font-size:13px}
th{color:var(--muted);font-weight:600;font-size:11px;text-transform:uppercase;letter-spacing:.03em}
tr:last-child td{border-bottom:none}
td.num{text-align:right}
.table-wrap{overflow-x:auto}

.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:700}
.badge.on{background:rgba(74,222,128,.15);color:var(--green)}
.badge.off{background:rgba(248,113,113,.15);color:var(--red)}
.badge.exp{background:rgba(251,191,36,.15);color:var(--yellow)}

.btn{display:inline-block;padding:8px 14px;border-radius:8px;border:1px solid var(--border);background:var(--panel-2);color:var(--text);font-weight:600;font-size:13px;cursor:pointer}
.btn:hover{border-color:var(--accent);text-decoration:none}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#0f172a}
.btn.primary:hover{background:var(--accent-2)}
.btn.danger{color:var(--red);border-color:rgba(248,113,113,.4)}
.btn.small{padding:5px 10px;font-size:12px}

form.inline{display:inline}

label{display:block;font-size:13px;font-weight:600;color:#cbd5e1;margin:14px 0 5px}
input[type=text],input[type=password],input[type=url],input[type=date],select,textarea{
  width:100%;padding:9px 12px;border-radius:8px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:14px
}
textarea{resize:vertical}
.checkline{display:flex;align-items:center;gap:8px;margin-top:14px}
.checkline input{width:auto}
.checkline label{margin:0;font-weight:400}
.help{color:var(--muted);font-size:12px;margin-top:4px}

.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:720px){.grid2{grid-template-columns:1fr}}

.flash{padding:12px 14px;border-radius:8px;margin-bottom:16px;font-size:13px}
.flash.ok{background:rgba(74,222,128,.1);border:1px solid rgba(74,222,128,.3);color:var(--green)}
.flash.err{background:rgba(248,113,113,.1);border:1px solid rgba(248,113,113,.3);color:var(--red)}

.short-url{font-family:ui-monospace,Consolas,monospace;background:var(--panel-2);padding:2px 8px;border-radius:6px}

.login-wrap{display:flex;align-items:center;justify-content:center;min-height:100vh}
.login-card{width:100%;max-width:380px;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:32px}
.login-card h1{font-size:18px;margin:0 0 4px}
.login-card p{color:var(--muted);margin:0 0 20px;font-size:13px}

.pagination{display:flex;gap:6px;margin-top:14px}
.pagination a,.pagination span{padding:6px 11px;border-radius:6px;border:1px solid var(--border);font-size:12px}
.pagination .current{background:var(--accent);color:#0f172a;border-color:var(--accent)}

.chart-wrap{height:260px}

.modal-bg{display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);align-items:center;justify-content:center;z-index:50}
.modal-bg.show{display:flex}
.modal{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:24px;max-width:320px;text-align:center}
.modal img{background:#fff;padding:10px;border-radius:8px;max-width:220px}

@media (max-width: 860px){
  .app{flex-direction:column}
  .sidebar{width:100%;flex-direction:row;flex-wrap:wrap;padding:12px}
  .sidebar .brand{border:none;padding:0 12px;margin:0}
  .sidebar nav{display:flex}
  .sidebar .spacer{display:none}
  .main{padding:18px}
}