:root{--bg:#0f0f0f;--card:#1a1a1a;--primary:#00ff88;--text:#fff;--muted:#999}
*{box-sizing:border-box}
body{margin:0;font-family:Segoe UI,Arial;background:var(--bg);color:var(--text)}
.container{max-width:900px;margin:auto}
.card{background:var(--card);border-radius:16px;padding:25px;margin-bottom:20px;box-shadow:0 10px 30px rgba(0,0,0,.5)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:15px}
button{padding:16px;border-radius:14px;border:none;background:var(--primary);color:#000;font-weight:600;cursor:pointer}
button:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,255,136,.35)}
input{width:100%;padding:14px;border-radius:10px;border:1px solid #333;background:#111;color:#fff;margin-bottom:15px}
footer{text-align:center;margin-top:40px;color:var(--muted);font-size:13px}
.admin-item{padding:12px;border-bottom:1px solid #333}
.total{font-size:22px;color:var(--primary);margin-top:20px}