:root{--primary:#4f46e5;--primary-hover:#4338ca;--bg-color:#f9fafb;--text-color:#111827;--text-muted:#6b7280;--card-bg:#fff;--border-color:#e5e7eb;--radius:12px}@media (prefers-color-scheme:dark){:root{--primary:#6366f1;--primary-hover:#818cf8;--bg-color:#111827;--text-color:#f9fafb;--text-muted:#9ca3af;--card-bg:#1f2937;--border-color:#374151}}*{box-sizing:border-box;padding:0;margin:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-color);line-height:1.5;min-height:100vh;display:flex;flex-direction:column}.container{max-width:800px;margin:0 auto;padding:2rem;width:100%}.card{background-color:var(--card-bg);border-radius:var(--radius);border:1px solid var(--border-color);padding:2rem;box-shadow:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -1px rgba(0,0,0,.06);transition:transform .2s ease,box-shadow .2s ease}.card:hover{transform:translateY(-2px);box-shadow:0 10px 15px -3px rgba(0,0,0,.1),0 4px 6px -2px rgba(0,0,0,.05)}.title{font-size:2rem;font-weight:700;margin-bottom:.5rem}.subtitle,.title{text-align:center}.subtitle{color:var(--text-muted);margin-bottom:2rem}.dropzone{border:2px dashed var(--border-color);border-radius:var(--radius);padding:3rem 2rem;text-align:center;cursor:pointer;transition:all .2s ease;background-color:var(--bg-color)}.dropzone.active,.dropzone:hover{border-color:var(--primary);background-color:rgba(99,102,241,.05)}.btn{display:inline-block;background-color:var(--primary);color:#fff;padding:.75rem 1.5rem;border-radius:var(--radius);font-weight:600;border:none;cursor:pointer;transition:background-color .2s ease,transform .1s ease;text-decoration:none;text-align:center}.btn:hover{background-color:var(--primary-hover)}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.7;cursor:not-allowed}.result-section{display:flex;flex-direction:column;align-items:center;gap:1.5rem;margin-top:2rem}.qr-container{background:#fff;padding:1rem;border-radius:8px;box-shadow:0 4px 6px -1px rgba(0,0,0,.1)}.url-box{background-color:var(--bg-color);padding:.75rem 1rem;border-radius:6px;border:1px solid var(--border-color);width:100%;word-break:break-all;text-align:center;font-family:monospace}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.animate-spin{animation:spin 1s linear infinite}