:root{
  --bg:#0f0f12; --card:#17171b; --muted:#9aa0a6; --accent:#ffb86b; --danger:#e74c3c;
  --btn-bg:#222; --btn-hover:#2a2a2f;
}
*{box-sizing:border-box}
body.dark{background:var(--bg); color:#e6e6e6; font-family:Inter,system-ui,Arial,Helvetica,sans-serif; margin:0}
.container{max-width:980px;margin:24px auto;padding:16px}
header{display:flex;align-items:center;justify-content:space-between}
h1{margin:0;font-size:20px}
.card{background:var(--card);padding:18px;border-radius:10px;box-shadow:0 6px 20px rgba(0,0,0,.5);margin-top:16px}
.card.small{max-width:420px;margin:48px auto}
label{display:block;margin-bottom:8px;color:var(--muted)}
input[type="url"], input[type="text"], input[type="password"]{
  width:100%;padding:12px;border-radius:8px;border:1px solid #222;background:#0b0b0d;color:#e6e6e6;margin-bottom:12px;
}
button{background:var(--accent);border:0;padding:10px 14px;border-radius:8px;cursor:pointer;color:#111;font-weight:600}
.notice{margin-top:10px;padding:10px;border-radius:8px}
.notice.error{background:#3a1a1a;color:#ffd9d9}
.notice.success{background:#173a21;color:#d1ffd9}
.center{text-align:center}
.ad-slot{margin:8px auto;}
.btn{display:inline-block;padding:8px 10px;border-radius:8px;background:var(--btn-bg);text-decoration:none;color:#e6e6e6;margin-right:8px}
.btn.small{padding:6px 8px;font-size:13px}
.btn.danger{background:var(--danger)}
.table{width:100%;border-collapse:collapse}
.table th, .table td{padding:8px;border-bottom:1px solid #111;font-size:14px}
footer{margin-top:28px;text-align:center;color:var(--muted)}