:root{--bg: #0c0e12;--surface: #141820;--surface-2: #1a2029;--border: #2a3340;--text: #e9edf2;--muted: #8b96a5;--accent: #4f8cff;--accent-dim: #3d6ec9;--danger: #f07178;--radius: 12px;--radius-sm: 8px;--font: "DM Sans", system-ui, sans-serif;--mono: "JetBrains Mono", ui-monospace, monospace}*,*:before,*:after{box-sizing:border-box}html{color-scheme:dark}body{margin:0;min-height:100vh;font-family:var(--font);font-size:15px;line-height:1.45;color:var(--text);background:radial-gradient(ellipse 120% 80% at 50% -20%,rgba(79,140,255,.12),transparent 50%),var(--bg)}#app{min-height:100vh}.layout{max-width:1120px;margin:0 auto;padding:2rem 1.25rem 3rem}header{margin-bottom:2rem}header h1{margin:0 0 .35rem;font-size:clamp(1.5rem,4vw,1.85rem);font-weight:700;letter-spacing:-.02em}header p{margin:0;color:var(--muted);font-size:.95rem}.grid{display:grid;gap:1.5rem}.col-stack{display:flex;flex-direction:column;gap:1.5rem;min-width:0}@media(min-width:900px){.grid{grid-template-columns:1fr 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var(--border)}.btn.secondary:hover{filter:brightness(1.08)}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}.preview-panel{position:sticky;top:1.25rem}.preview-box{display:flex;flex-direction:column;align-items:center;gap:1rem}.canvas-wrap{width:100%;max-width:320px;aspect-ratio:1;display:flex;align-items:center;justify-content:center;padding:1rem;background:var(--surface-2);border:1px dashed var(--border);border-radius:var(--radius)}#qr-canvas{max-width:100%;height:auto;border-radius:4px;image-rendering:pixelated;image-rendering:crisp-edges}.error-banner{width:100%;padding:.6rem .75rem;font-size:.85rem;color:var(--danger);background:#f071781a;border:1px solid rgba(240,113,120,.35);border-radius:var(--radius-sm)}.actions{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;width:100%}.vcard-fields{display:grid;gap:.75rem}.hidden{display:none!important}footer.note{margin-top:2.5rem;padding-top:1.25rem;border-top:1px solid var(--border);font-size:.82rem;color:var(--muted);text-align:center}footer.note p{margin:0}footer.note p+p{margin-top:.65rem}footer.note .footer-copy{font-size:.78rem;opacity:.92}footer.note .footer-copy a{color:var(--accent);text-decoration:none}footer.note .footer-copy a:hover{text-decoration:underline}@media print{@page{margin:14mm}body{background:#fff!important}.no-print{display:none!important}.layout{padding:0;max-width:none}.canvas-wrap{border:none!important;background:#fff!important;max-width:none;padding:0}#qr-canvas{image-rendering:auto}}