:root{color-scheme:dark;--bg: #17181c;--panel-bg: #212227;--text: #eceef1;--muted: #9a9ea6;--border: #34363c;--accent: #6366f1;--accent-text: #ffffff;--radius: 12px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}.app{max-width:1000px;margin:0 auto;padding:32px 20px 64px}.app-header{text-align:center}.app-header h1{margin:0 0 4px;font-size:1.75rem}.subtitle{margin:0 0 24px;color:var(--muted)}.layout{display:grid;grid-template-columns:1.2fr 1fr;gap:20px;align-items:start}@media (max-width: 760px){.layout{grid-template-columns:1fr}}.panel{background:var(--panel-bg);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.field-group{border:none;padding:0;margin:0 0 20px}.field-group:last-child{margin-bottom:0}.field-group legend{font-weight:600;padding:0 0 10px}.field{display:flex;flex-direction:column;gap:4px;font-size:.85rem;color:var(--muted);margin-bottom:12px;flex:1}.field-row{display:flex;gap:12px;flex-wrap:wrap}.field input,.field select,.field textarea{font:inherit;padding:8px 10px;border:1px solid var(--border);border-radius:8px;background:var(--panel-bg);color:var(--text)}.field input[type=checkbox]{width:18px;height:18px;align-self:flex-start}.field-checkbox{flex-direction:row;align-items:center;gap:8px}.field textarea{min-height:60px;resize:vertical}.preview{display:flex;flex-direction:column;align-items:center;gap:16px;position:sticky;top:20px}#qr-canvas{display:flex;justify-content:center;align-items:center;min-height:320px}.export-row{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}button{font:inherit;padding:10px 16px;border-radius:8px;border:1px solid var(--accent);background:var(--accent);color:var(--accent-text);cursor:pointer}button:hover{opacity:.9}.ghost-btn{background:transparent;color:var(--accent);border:1px solid var(--border);align-self:flex-start;padding:6px 12px;font-size:.85rem}.hint{font-size:.8rem;color:var(--muted);margin:4px 0 0}.status{min-height:1.2em;font-size:.85rem;color:var(--muted)}