*{box-sizing:border-box}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;margin:0;padding:0;background:#0f172a;color:#e2e8f0}
.container{max-width:920px;margin:40px auto;padding:24px}
.card{background:#111827;border:1px solid #1f2937;border-radius:16px;box-shadow:0 10px 30px rgba(0,0,0,.3);padding:24px}
h1,h2{margin:0 0 16px}
input,button{padding:12px;border-radius:12px;border:1px solid #374151;background:#0b1220;color:#e5e7eb;width:100%}
input:focus{outline:2px solid #60a5fa}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.row-1{display:grid;grid-template-columns:1fr;gap:12px}
.btn{cursor:pointer}
a{color:#93c5fd}
ul.flash{background:#111827;border:1px solid #374151;border-radius:12px;padding:12px;margin:0 0 16px}
.footer{margin-top:24px;color:#94a3b8;font-size:14px}