.qrcode-card{background:#fff;border-radius:16px;padding:24px;box-shadow:0 8px 16px #0000001a;transition:transform .3s ease,box-shadow .3s ease}.qrcode-card:hover{transform:translateY(-4px);box-shadow:0 12px 24px #00000026}.qrcode-card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding-bottom:16px;border-bottom:2px solid #f0f0f0}.qrcode-card-header h3{font-size:1.3rem;color:#333;margin:0}.qrcode-card-actions{display:flex;gap:8px}.btn-icon{background:none;border:none;font-size:1.2rem;cursor:pointer;padding:4px 8px;border-radius:4px;transition:background .2s ease}.btn-icon:hover{background:#f0f0f0}.qrcode-image-container{display:flex;justify-content:center;align-items:center;margin-bottom:20px;padding:16px;background:#f8f9fa;border-radius:12px}.qrcode-image{max-width:100%;height:auto;border-radius:8px}.qrcode-placeholder{padding:40px;color:#999}.qrcode-info{margin-bottom:20px}.info-item{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid #f0f0f0}.info-item:last-child{border-bottom:none}.info-label{font-weight:500;color:#666;font-size:.9rem}.info-value{color:#333;font-size:.9rem;text-align:right;max-width:60%;word-break:break-all}.info-value.highlight{color:#667eea;font-weight:600;font-size:1.1rem}.info-link{color:#667eea;text-decoration:none;font-size:.9rem;max-width:60%;word-break:break-all;text-align:right}.info-link:hover{text-decoration:underline}.qrcode-card-footer{display:flex;gap:12px;padding-top:16px;border-top:2px solid #f0f0f0}.qrcode-card-footer .btn{flex:1;padding:10px;font-size:14px}.qrcode-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}.empty-state{text-align:center;color:#fff;padding:60px 20px;background:#ffffff1a;border-radius:16px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.empty-icon{font-size:4rem;margin-bottom:20px}.empty-state h2{font-size:1.8rem;margin-bottom:10px}.empty-state p{font-size:1.1rem;opacity:.9}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-content{background:#fff;border-radius:16px;width:90%;max-width:500px;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px #0000004d;animation:slideIn .3s ease}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:24px;border-bottom:2px solid #f0f0f0}.modal-header h2{margin:0;color:#333;font-size:1.5rem}.modal-close{background:none;border:none;font-size:2rem;color:#999;cursor:pointer;padding:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all .2s ease}.modal-close:hover{background:#f0f0f0;color:#333}.form{padding:24px}.form-group{margin-bottom:24px}.form-group input{width:100%;padding:12px;border:2px solid #e0e0e0;border-radius:8px;font-size:1rem;transition:border-color .3s ease}.form-hint{display:block;margin-top:8px;color:#666;font-size:.85rem;line-height:1.4}.form-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:32px;padding-top:24px;border-top:2px solid #f0f0f0}.form-actions .btn{min-width:100px}.btn:disabled{opacity:.6;cursor:not-allowed}.login-container{min-height:100vh;display:flex;justify-content:center;align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);padding:20px}.login-box{background:#fff;border-radius:16px;padding:40px;width:100%;max-width:400px;box-shadow:0 20px 60px #0000004d;animation:slideIn .3s ease}@keyframes slideIn{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.login-header{text-align:center;margin-bottom:30px}.login-header h1{font-size:2rem;color:#333;margin-bottom:8px}.login-header p{color:#666;font-size:.95rem}.login-form{margin-top:30px}.error-message{background:#fee;color:#c33;padding:12px;border-radius:8px;margin-bottom:20px;font-size:.9rem;border:1px solid #fcc}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;color:#333;font-weight:500;font-size:.95rem}.form-group input{width:100%;padding:12px;border:2px solid #e0e0e0;border-radius:8px;font-size:1rem;transition:border-color .3s ease;box-sizing:border-box}.form-group input:focus{outline:none;border-color:#667eea}.form-group input:disabled{background:#f5f5f5;cursor:not-allowed}.login-button{width:100%;padding:14px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:8px;font-size:1rem;font-weight:500;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease;margin-top:10px}.login-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.login-button:active:not(:disabled){transform:translateY(0)}.login-button:disabled{opacity:.6;cursor:not-allowed}.login-footer{margin-top:20px;text-align:center;color:#999;font-size:.85rem}.login-footer small{display:block;margin-top:10px}.app{min-height:100vh;padding:20px}.app-header{color:#fff;margin-bottom:40px;padding:20px}.header-content{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}.header-content>div:first-child{text-align:center;flex:1}.app-header h1{font-size:2.5rem;margin-bottom:10px;text-shadow:2px 2px 4px rgba(0,0,0,.2)}.app-header p{font-size:1.1rem;opacity:.9}.user-info{display:flex;align-items:center;gap:15px}.username{font-size:1rem;opacity:.9;font-weight:500}.app-main{max-width:1200px;margin:0 auto}.toolbar{margin-bottom:30px;display:flex;justify-content:flex-end}.btn{padding:12px 24px;border:none;border-radius:8px;font-size:16px;cursor:pointer;transition:all .3s ease;font-weight:500}.btn-primary{background:#fff;color:#667eea;box-shadow:0 4px 6px #0000001a}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 12px #00000026}.btn-secondary{background:#6c757d;color:#fff}.btn-secondary:hover{background:#5a6268}.btn-danger{background:#dc3545;color:#fff}.btn-danger:hover{background:#c82333}.btn-success{background:#28a745;color:#fff}.btn-success:hover{background:#218838}.loading{text-align:center;color:#fff;font-size:1.2rem;padding:40px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}