* { box-sizing: border-box; }
body { margin: 0; padding: 20px; background: #f1f5f9; color: #172033; font-family: system-ui, sans-serif; }
main { max-width: 720px; margin: 40px auto; padding: 28px; background: white; border-radius: 14px; box-shadow: 0 8px 30px #00000012; }
h1 { margin-top: 0; font-size: clamp(1.6rem, 4vw, 2rem); }
p { line-height: 1.6; }
.eyebrow { color: #475569; font-size: .8rem; letter-spacing: .12em; }
label { display: block; margin: 20px 0 8px; font-weight: 600; }
textarea { width: 100%; padding: 12px; border: 1px solid #94a3b8; border-radius: 8px; resize: vertical; overflow-wrap: anywhere; font-family: monospace; }
.buttons { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
button { padding: 12px 18px; border: 0; border-radius: 8px; background: #1d4ed8; color: white; cursor: pointer; font: inherit; }
button:disabled { opacity: .5; cursor: not-allowed; }
#reset { background: #475569; }
#status { min-height: 24px; }
:focus-visible { outline: 3px solid #2563eb; outline-offset: 3px; }
@media (max-width: 400px) { body { padding: 8px; } main { padding: 12px; } }