:root{
  --brand:#00AEEF; --brand-d:#0098d0; --ink:#0f1b2d; --muted:#6b7c93;
  --bg:#f4f7fb; --card:#fff; --line:#e6edf5; --side:#0f1b2d; --sideink:#aebfd4;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--ink);font-size:14px}
a{color:var(--brand);text-decoration:none}

/* ---- Login ---- */
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#0f1b2d,#13324a)}
.login-card{background:#fff;padding:34px 30px;border-radius:14px;width:330px;box-shadow:0 20px 50px rgba(0,0,0,.35)}
.login-logo{font-size:26px;font-weight:800;color:var(--brand);letter-spacing:.5px}
.login-sub{color:var(--muted);margin-bottom:18px;font-size:13px}
.login-card label{display:block;margin:12px 0 5px;font-weight:600;font-size:12px;color:var(--muted)}
.login-card input{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:8px;font-size:14px}
.login-card button{margin-top:18px;width:100%;padding:12px;border:0;border-radius:8px;background:var(--brand);color:#fff;font-weight:700;font-size:15px;cursor:pointer}
.login-card button:hover{background:var(--brand-d)}
.alert{background:#fdecea;color:#b3261e;padding:10px 12px;border-radius:8px;margin:10px 0;font-size:13px}
.alert.ok{background:#e7f7ee;color:#15803d}

/* ---- Shell ---- */
body:has(.side){display:flex;min-height:100vh}
.side{width:220px;background:var(--side);color:var(--sideink);display:flex;flex-direction:column;flex-shrink:0}
.brand{padding:22px 20px;font-size:22px;font-weight:800;color:#fff}
.brand span{display:block;font-size:11px;font-weight:500;color:var(--brand);letter-spacing:3px;text-transform:uppercase}
.side nav{display:flex;flex-direction:column;padding:8px}
.side nav a{padding:11px 14px;border-radius:8px;color:var(--sideink);font-weight:600;margin:2px 0}
.side nav a:hover{background:rgba(255,255,255,.06);color:#fff}
.side nav a.active{background:var(--brand);color:#fff}
.side-foot{margin-top:auto;padding:18px 20px;font-size:12px;color:var(--sideink);border-top:1px solid rgba(255,255,255,.08)}
.side-foot a{color:var(--brand)}
main{flex:1;min-width:0}
.topbar{padding:18px 26px;border-bottom:1px solid var(--line);background:#fff}
.topbar h1{margin:0;font-size:18px}
.content{padding:22px 26px}

/* ---- KPIs ---- */
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:18px}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px}
.kpi-n{font-size:28px;font-weight:800;color:var(--ink)}
.kpi-l{color:var(--muted);font-size:12px;margin-top:4px}

/* ---- Cards / grid ---- */
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:18px}
.card h3{margin:0 0 14px;font-size:15px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media(max-width:900px){.kpis{grid-template-columns:repeat(2,1fr)}.grid2{grid-template-columns:1fr}}

/* ---- Tables ---- */
.tbl{width:100%;border-collapse:collapse;font-size:13px}
.tbl th{text-align:left;padding:9px 10px;color:var(--muted);font-size:11px;text-transform:uppercase;border-bottom:2px solid var(--line)}
.tbl td{padding:9px 10px;border-bottom:1px solid var(--line)}
.tbl tr:hover td{background:#fafcff}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.muted{color:var(--muted);text-align:center;padding:18px}

/* ---- Badges / forms ---- */
.badge{padding:3px 9px;border-radius:20px;font-size:11px;font-weight:700}
.badge.on{background:#e7f7ee;color:#15803d}
.badge.off{background:#eef2f7;color:#64748b}
.formrow{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.formrow input,.formrow select{padding:9px 11px;border:1px solid var(--line);border-radius:8px;font-size:13px}
.chk{display:flex;align-items:center;gap:5px;font-size:13px;color:var(--muted)}
button{padding:9px 14px;border:0;border-radius:8px;background:var(--brand);color:#fff;font-weight:600;cursor:pointer;font-size:13px}
button:hover{background:var(--brand-d)}
button.danger{background:#ef4444}button.danger:hover{background:#dc2626}
.actions{display:flex;gap:6px;flex-wrap:wrap}
.actions form{display:flex;gap:4px;align-items:center}
.actions input{padding:6px 8px;border:1px solid var(--line);border-radius:6px;font-size:12px}
.actions button{padding:6px 10px;font-size:12px}
.switch{display:flex;align-items:center;gap:10px;font-weight:600;font-size:15px;cursor:pointer;margin:6px 0}
.switch input{width:20px;height:20px;accent-color:var(--brand)}
.hint{margin-top:10px;color:var(--muted);font-size:13px}
.card p.muted{text-align:left;padding:0;margin:0 0 12px;line-height:1.5}