*,*:before,*:after{box-sizing:border-box}:root{color-scheme:light dark;--bg: #0f1419;--surface: #1a2332;--border: #2d3a4d;--text: #e7ecf3;--muted: #8b9cb3;--accent: #3b82f6;--accent-hover: #2563eb;--error: #f87171;--note: #fbbf24;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}body{margin:0;min-height:100vh;background:var(--bg);color:var(--text)}.container{max-width:42rem;margin:0 auto;padding:2rem 1.25rem 3rem}header{margin-bottom:2rem}h1{margin:0 0 .25rem;font-size:1.75rem;font-weight:700}.subtitle{margin:0;color:var(--muted);font-size:.95rem}.form{display:flex;flex-direction:column;gap:1rem}.field{display:flex;flex-direction:column;gap:.35rem}.field span{font-size:.875rem;font-weight:500}.field em{font-weight:400;color:var(--muted);font-style:normal}input,textarea{padding:.5rem .75rem;border:1px solid var(--border);border-radius:.375rem;background:var(--surface);color:var(--text);font:inherit}input:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:1px}textarea{resize:vertical;font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:.875rem;line-height:1.6}.actions{display:flex;gap:.5rem}.btn{padding:.5rem 1rem;border:1px solid var(--border);border-radius:.375rem;background:var(--surface);color:var(--text);font:inherit;font-weight:500;cursor:pointer}.btn:hover:not(:disabled){border-color:var(--accent)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn--primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn--primary:hover:not(:disabled){background:var(--accent-hover);border-color:var(--accent-hover)}.error{margin:0;color:var(--error);font-size:.875rem}.note{margin:0;color:var(--note);font-size:.8125rem}.output-section{margin-top:1.5rem}@media(min-width:32rem){.form{display:grid;grid-template-columns:1fr auto;gap:1rem .75rem}.field:not(.field--narrow){grid-column:1 / -1}.note,.error,.actions{grid-column:1 / -1}}