:root{--bg:#0b1020;--card:#151a2b;--fg:#e5e7eb;--muted:#9ca3af;--brand:#10b981}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,'Noto Naskh Arabic UI',Tahoma,Arial}
.container{max-width:900px;margin:32px auto;padding:0 16px}
.app-header,.app-footer{padding:16px;border-bottom:1px solid #1f263a}
.app-footer{border-top:1px solid #1f263a;border-bottom:none;text-align:center;color:var(--muted)}
h1,h2{margin:0 0 12px}
.card{background:var(--card);padding:16px;border:1px solid #1f263a;border-radius:12px;margin-bottom:16px}
.btn{background:var(--brand);color:#03120d;border:none;padding:10px 16px;border-radius:10px;cursor:pointer;font-weight:600}
.btn:hover{opacity:.9}
.pre{background:#0e1324;padding:12px;border-radius:8px;overflow:auto;max-height:280px;border:1px solid #1f263a}
.hint{color:var(--muted)}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;background:#374151;color:#fff;font-weight:700}
.badge.online{background:#16a34a}
.badge.offline{background:#ef4444}
code{background:#0e1324;padding:2px 6px;border-radius:6px;border:1px solid #1f263a}