:root{--primary-color:#2563eb;--secondary-color:#475569;--success-color:#059669;--background-color:#f1f5f9;--border-color:#e2e8f0;--text-color:#1e293b;--text-light:#64748b;--card-shadow:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -2px rgba(0,0,0,.1);--radius:0.5rem}body{background-color:var(--background-color);color:var(--text-color);line-height:1.6;margin:0;padding:1rem}.container{max-width:800px;margin:0 auto;padding:1rem}.header{text-align:center;margin-bottom:2rem}.header h1{color:var(--primary-color);font-size:1.875rem;margin-bottom:.5rem}.subtitle{color:var(--text-light);margin:0}.card{background:#fff;border-radius:var(--radius);box-shadow:var(--card-shadow);margin-bottom:1.5rem;overflow:hidden}.card-header{background-color:#f8fafc;border-bottom:1px solid var(--border-color);padding:1rem 1.5rem}.card-header h2{color:var(--text-color);font-size:1.25rem;margin:0}.card-body{padding:1.5rem}.form-group,.form-row{margin-bottom:1.25rem}.form-row{display:flex;gap:1rem}.flex-1{flex:1}label{display:block;font-weight:500;margin-bottom:.5rem;color:var(--text-color)}input[type=datetime-local],input[type=text],select,textarea{width:100%;padding:.625rem;border:1px solid var(--border-color);border-radius:var(--radius);font-size:.875rem;transition:border-color .2s;box-sizing:border-box}input:focus,textarea:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(37,99,235,.1)}textarea{height:5rem;resize:vertical}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.625rem 1.25rem;border-radius:var(--radius);font-weight:500;cursor:pointer;transition:all .2s;border:none;font-size:.875rem}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:#1d4ed8}.btn-secondary{background-color:var(--secondary-color);color:#fff}.btn-secondary:hover{background-color:#334155}.btn-outline{background-color:#fff;border:1px solid var(--border-color);color:var(--text-light)}.btn-outline:hover{background-color:#f8fafc}.qrcode-container{display:flex;justify-content:center;margin:1.5rem 0;background-color:#fff}#qrcode,.qrcode-container{padding:1rem;border-radius:var(--radius)}#qrcode{background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.1)}.instructions{color:var(--text-light);margin:1rem 0}.small-text{font-size:.75rem;color:var(--text-light)}.button-group{display:flex;gap:.75rem;justify-content:center;margin-top:1.5rem}.event-info{background-color:#f8fafc;padding:1rem;border-radius:var(--radius);margin-bottom:1rem}.event-info h3{color:var(--primary-color);margin:0 0 1rem 0}.event-info p{margin:.5rem 0}@media (max-width:640px){.form-row{gap:0}.button-group,.form-row{flex-direction:column}.btn{width:100%}}.text-center{text-align:center}#app{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft JhengHei,sans-serif;margin:0;padding:0}