body{margin:0;font-family:Tahoma,Arial;background:#0f172a;color:#e5e7eb}
a{color:#93c5fd;text-decoration:none}
.center{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}
.btn,button{display:inline-block;background:#2563eb;color:#fff;padding:12px 18px;border-radius:10px;border:0;margin:6px;cursor:pointer}
.card{background:#111827;padding:18px;margin:14px 0;border-radius:14px}
.container{max-width:1100px;margin:30px auto;padding:20px}
input,select,textarea{width:100%;padding:12px;border:0;border-radius:8px;margin:8px 0;box-sizing:border-box}
table{width:100%;border-collapse:collapse;background:#111827;border-radius:12px;overflow:hidden}
td,th{padding:12px;border-bottom:1px solid #1f2937}
.nav{background:#020617;padding:15px}
.nav a{margin:0 8px}
pre{direction:ltr;text-align:left;background:#020617;padding:15px;border-radius:10px;white-space:pre-wrap}