body{background:#0B0E11;color:#fff;font-family:Arial,sans-serif;margin:0}
.auth-card{max-width:420px;margin:80px auto;padding:30px;background:#181A20;border-radius:18px}
input,button{width:100%;padding:12px;margin:8px 0}
button{background:#F0B90B;border:0}
.sidebar{width:220px;position:fixed;height:100%;background:#181A20;padding:20px}
.main{margin-left:240px;padding:20px}
.cards{display:flex;gap:20px;flex-wrap:wrap}
.card{background:#181A20;padding:20px;border-radius:16px;min-width:220px}