:root {
  --bg:#111315; --card:#1b1e22; --text:#f3f3f3; --muted:#9a9a9a; --accent:#ff8c1a; --danger:#ff4d4f;
}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,sans-serif;background:var(--bg);color:var(--text)}
.container{max-width:1200px;margin:0 auto;padding:16px}
.nav{display:flex;flex-wrap:wrap;gap:8px;padding:10px 16px;background:#0d0f11;position:sticky;top:0}
.nav a{color:var(--text);text-decoration:none;padding:8px 12px;border-radius:8px;background:#20242a}
.nav a.active,.btn{background:var(--accent);color:#111;font-weight:700}
.card{background:var(--card);border-radius:12px;padding:16px;margin-bottom:16px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.kpi{font-size:1.6rem;font-weight:700}
small,.muted{color:var(--muted)}
input,select,textarea{width:100%;background:#111;border:1px solid #333;color:#fff;border-radius:8px;padding:10px;margin-top:6px;margin-bottom:10px}
button{border:none;border-radius:8px;padding:10px 12px;cursor:pointer}
.btn-secondary{background:#2b3038;color:#fff}.btn-danger{background:var(--danger);color:#fff}
.table-wrap{overflow-x:auto} table{width:100%;border-collapse:collapse;min-width:900px}
th,td{border-bottom:1px solid #333;padding:10px;text-align:left}
.badge{padding:4px 8px;border-radius:999px;font-size:12px}.badge-ok{background:#1f4f2d}.badge-off{background:#5a2626}
.flash{padding:10px;border-radius:8px;margin-bottom:12px}.flash.success{background:#1f4f2d}.flash.error{background:#5a2626}
.login-box{max-width:400px;margin:80px auto}.row{display:flex;gap:8px;flex-wrap:wrap}.row>*{flex:1;min-width:140px}
#loading-overlay{position:fixed;inset:0;background:rgba(0,0,0,.75);display:none;align-items:center;justify-content:center;z-index:9999}
#loading-overlay.show{display:flex}#loading-text{background:#1b1e22;border:1px solid #333;color:#fff;padding:16px 22px;border-radius:10px;font-weight:700}
@media(max-width:700px){.container{padding:12px}}