body { margin: 0; background: #f4f5f7; color: #1f2933; font: 16px/1.5 system-ui, sans-serif; }
.kutu { max-width: 420px; margin: 8vh auto; padding: 24px 16px; background: #fff; border-radius: 10px; box-shadow: 0 1px 4px rgba(0,0,0,.12); }
h1 { font-size: 1.15rem; margin: 0 0 16px; }
label { display: block; margin: 12px 0; }
input { display: block; width: 100%; box-sizing: border-box; margin-top: 4px; padding: 8px; font: inherit; }
button { margin-top: 8px; padding: 8px 16px; font: inherit; cursor: pointer; }
.not { color: #52606d; font-size: .9rem; }
.hata, .errorlist { color: #b42318; }
.qr { display: inline-block; background: #fff; padding: 8px; border-radius: 6px; }
.qr svg { width: 200px; height: 200px; }
table { width: 100%; border-collapse: collapse; } td, th { padding: 6px; border-bottom: 1px solid #e4e7eb; text-align: left; }
@media (prefers-color-scheme: dark) { body { background: #111827; color: #e5e7eb; } .kutu { background: #1f2937; } .not { color: #9ca3af; } }