:root{--primary-color:#0073aa;--primary-dark:#005a87;--success-color:#28a745;--error-color:#dc3545;--warning-color:#ffc107;--light-bg:#f8f9fa;--border-color:#dee2e6;--text-primary:#333;--text-secondary:#666;--text-light:#888;--shadow-light:0 2px 15px rgba(0,0,0,0.08);--shadow-medium:0 5px 20px rgba(0,0,0,0.12);--border-radius:10px;--transition:all 0.3s cubic-bezier(0.4, 0, 0.2, 1)}.prf-form-wrap{max-width:900px;margin:40px auto;padding:40px;background:#fff;border-radius:var(--border-radius);box-shadow:var(--shadow-medium);border:1px solid #e9ecef;position:relative;overflow:hidden}.prf-form-wrap::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary-color),var(--success-color))}.prf-progress-indicator{display:flex;justify-content:space-between;margin-bottom:40px;position:relative;padding:0 30px}.prf-progress-indicator::before{content:'';position:absolute;top:50%;left:30px;right:30px;height:3px;background:linear-gradient(90deg,var(--primary-color) 50%,var(--border-color) 50%);background-size:200% 100%;background-position:100% 0;transform:translateY(-50%);z-index:1;transition:var(--transition)}.prf-progress-indicator[data-step="2"]::before{background-position:0 0}.prf-step-indicator{position:relative;z-index:2;width:50px;height:50px;background:#fff;border:3px solid var(--border-color);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--text-light);transition:var(--transition);box-shadow:0 4px 10px rgb(0 0 0 / .1)}.prf-step-indicator.active{border-color:var(--primary-color);background:var(--primary-color);color:#fff;transform:scale(1.1);box-shadow:0 6px 15px rgb(0 115 170 / .3)}.prf-step-indicator.completed{border-color:var(--success-color);background:var(--success-color);color:#fff}.prf-step-label{position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%);white-space:nowrap;font-size:13px;color:var(--text-light);font-weight:500}.prf-step-indicator.active .prf-step-label{color:var(--primary-color);font-weight:600}.prf-step{display:none;opacity:0;transform:translateY(20px);transition:opacity 0.5s ease,transform 0.5s ease}.prf-step.active{display:block;opacity:1;transform:translateY(0);animation:slideUp 0.5s ease forwards}@keyframes slideUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.prf-step h3{margin-top:0;margin-bottom:30px;padding-bottom:20px;border-bottom:2px solid #f0f0f0;color:var(--text-primary);font-size:1.5em;font-weight:700;position:relative}.prf-step h3::after{content:'';position:absolute;bottom:-2px;left:0;width:80px;height:2px;background:var(--primary-color);border-radius:2px}.prf-field-group{margin-bottom:0;padding:25px;background:#fff;border-radius:8px;transition:var(--transition)}.prf-field-group label{display:block;margin-bottom:10px;font-weight:600;color:var(--text-primary);font-size:15px}.prf-subtext{font-size:13px;color:var(--text-secondary);margin-top:5px;margin-bottom:15px;line-height:1.6}.prf-field{width:100%;padding:14px 18px;border-radius:20px;font-size:15px;transition:var(--transition);background:#f7f7f7;color:var(--text-primary);font-family:inherit}.prf-field:hover:not(:focus){border-color:#adb5bd}.prf-field.error{border-color:var(--error-color);box-shadow:0 0 0 4px rgb(220 53 69 / .15)}.prf-field.success{border-color:var(--success-color)}select.prf-field{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23666' viewBox='0 0 16 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100%);text-align:center;margin-bottom:20px;position:relative;overflow:hidden}.prf-upload-box:hover{border-color:var(--primary-color);background:linear-gradient(135deg,#f0f7ff 0%,#e3f2fd 100%);transform:translateY(-3px);box-shadow:0 10px 25px rgb(0 115 170 / .1)}.prf-upload-box .plus-icon{font-size:60px;color:#adb5bd;line-height:1;margin-bottom:15px;font-weight:300;transition:var(--transition)}.prf-upload-box:hover .plus-icon{color:var(--primary-color);transform:scale(1.1)}.prf-upload-box p{margin:8px 0;color:var(--text-secondary);font-size:15px}.prf-upload-box p small{color:var(--text-light);font-size:13px}.prf-examples-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:20px;margin:25px 0}.prf-no-files{text-align:center;color:var(--text-light);padding:50px;border:2px dashed var(--border-color);border-radius:12px;background:var(--light-bg);font-size:15px}.prf-example-item{position:relative;border-radius:10px;overflow:hidden;box-shadow:0 4px 12px rgb(0 0 0 / .1);transition:var(--transition);aspect-ratio:1/1}.prf-example-item:hover{transform:translateY(-8px) scale(1.02);box-shadow:0 15px 30px rgb(0 0 0 / .15)}.prf-example-thumb{position:relative;width:100%;height:100%;background:linear-gradient(135deg,#f5f5f5 0%,#e0e0e0 100%)}.prf-example-thumb img{width:100%;height:100%;object-fit:cover;display:block}.prf-del-btn{position:absolute;top:12px;right:12px;width:32px;height:32px;background:rgb(220 53 69 / .95);color:#fff;border:none;border-radius:50%;cursor:pointer;font-size:18px;line-height:1;display:flex;align-items:center;justify-content:center;transition:var(--transition);backdrop-filter:blur(4px);z-index:2}.prf-del-btn:hover{background:var(--error-color);transform:scale(1.15) rotate(90deg);box-shadow:0 4px 10px rgb(220 53 69 / .3)}.prf-file-name{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,rgb(0 0 0 / .8));color:#fff;padding:10px;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.prf-file-size{position:absolute;top:12px;left:12px;background:rgb(0 0 0 / .8);color:#fff;padding:5px 10px;border-radius:20px;font-size:11px;font-weight:500;backdrop-filter:blur(4px)}.prf-vars-block{background:linear-gradient(135deg,#f8f9fa 0%,#e9ecef 100%);border-radius:10px;padding:25px;margin-bottom:25px;border:1px solid var(--border-color);box-shadow:0 4px 15px rgb(0 0 0 / .05)}.prf-vars-header{margin-bottom:20px;padding-bottom:15px;border-bottom:2px solid var(--border-color)}.prf-vars-header h5{margin:0 0 5px 0;color:var(--text-primary);font-size:16px;font-weight:700}.prf-file-info{font-size:13px;color:var(--text-light);margin:0}.prf-vars-content{display:grid;grid-template-columns:180px 1fr;gap:25px;align-items:start}.prf-vars-preview{border-radius:8px;overflow:hidden;border:3px solid #fff;box-shadow:0 5px 15px rgb(0 0 0 / .1)}.prf-vars-preview img{width:100%;height:180px;object-fit:cover;display:block}.prf-vars-fields{display:flex;flex-direction:column;gap:15px}.prf-var-field label{display:flex;align-items:center;gap:10px;margin-bottom:8px;font-weight:600;color:var(--text-primary);font-size:14px}.prf-var-badge{background:var(--primary-color);color:#fff;padding:4px 10px;border-radius:20px;font-size:12px;font-weight:600}.prf-reference-pair{margin-bottom:25px;padding:20px;background:linear-gradient(135deg,#fff 0%,#f8f9fa 100%);border-radius:10px;border:1px solid var(--border-color);box-shadow:0 4px 15px rgb(0 0 0 / .05)}.prf-reference-pair-inner{display:flex;align-items:center;gap:30px}.prf-reference-input,.prf-reference-output{flex:1}.prf-reference-arrow{font-size:28px;color:var(--primary-color);font-weight:700;padding:10px;background:var(--light-bg);border-radius:50%;width:50px;height:50px;display:flex;align-items:center;justify-content:center}.prf-reference-preview{margin-top:15px;min-height:150px;border:3px dashed var(--border-color);border-radius:8px;padding:15px;background:#fff;display:flex;align-items:center;justify-content:center;transition:var(--transition)}.prf-reference-preview:hover{border-color:var(--primary-color)}.prf-reference-preview img{max-width:100%;max-height:150px;object-fit:contain;border-radius:6px}.prf-text-example-item{margin-bottom:20px;padding:20px;background:#fff;border:2px solid var(--border-color);border-radius:8px;transition:var(--transition)}.prf-text-example-item:hover{border-color:var(--primary-color);box-shadow:0 6px 20px rgb(0 115 170 / .1)}.prf-text-example-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.prf-text-example-header label{font-weight:700;color:var(--primary-color);margin:0;font-size:15px}.prf-verification-section{margin-top:40px;padding:30px;background:linear-gradient(135deg,#f0f7ff 0%,#e3f2fd 100%);border-radius:10px;border:2px solid var(--primary-color);box-shadow:0 8px 25px rgb(0 115 170 / .15)}.prf-verification-section h4{color:var(--primary-color);margin-bottom:20px;font-size:18px;font-weight:700;border-bottom:2px solid rgb(0 115 170 / .2);padding-bottom:15px}.prf-field.ltr-input{direction:ltr;text-align:left;font-family:'Courier New',monospace;font-size:14px;background:#fff;border:2px solid var(--border-color)}.prf-field.ltr-input:focus{border-color:var(--primary-color);background:#f8fdff}.prf-actions{display:flex;justify-content:space-between;margin-top:50px;padding-top:30px;border-top:2px solid var(--border-color);gap:20px}.prf-actions .button{min-width:150px;padding:16px 30px;font-weight:700;border-radius:8px;transition:var(--transition);font-size:16px;border:2px solid #fff0;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:10px}.prf-actions .button-primary{background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-dark) 100%);color:#fff;box-shadow:0 6px 20px rgb(0 115 170 / .3)}.prf-actions .button-primary:hover:not(:disabled){background:linear-gradient(135deg,var(--primary-dark) 0%,#004466 100%);transform:translateY(-3px);box-shadow:0 10px 25px rgb(0 115 170 / .4)}.prf-actions .button-secondary{background:#fff;color:var(--primary-color);border:2px solid var(--primary-color)}.prf-actions .button-secondary:hover:not(:disabled){background:var(--primary-color);color:#fff;transform:translateY(-3px);box-shadow:0 6px 20px rgb(0 115 170 / .2)}.prf-actions .button:disabled{opacity:.5;cursor:not-allowed;transform:none!important;box-shadow:none!important}.button.loading{position:relative;color:#fff0}.button.loading::after{content:'';position:absolute;top:50%;left:50%;width:24px;height:24px;margin:-12px 0 0 -12px;border:3px solid rgb(255 255 255 / .3);border-top-color:#fff;border-radius:50%;animation:spin 0.8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.prf-warning{font-size:14px;padding:15px 20px;border-radius:8px;margin:15px 0;font-weight:500;display:flex;align-items:center;gap:12px}.prf-warning::before{font-family:'dashicons';font-size:20px}.prf-warning.error{background:linear-gradient(135deg,#f8d7da 0%,#f5c6cb 100%);color:#721c24;border:1px solid #f5c6cb}.prf-warning.error::before{content:'\f534';color:#dc3545}.prf-warning.success{background:linear-gradient(135deg,#d4edda 0%,#c3e6cb 100%);color:#155724;border:1px solid #c3e6cb}.prf-warning.success::before{content:'\f147';color:#28a745}.prf-warning.warning{background:linear-gradient(135deg,#fff3cd 0%,#ffeaa7 100%);color:#856404;border:1px solid #ffeaa7}.prf-warning.warning::before{content:'\f227';color:#ffc107}.prf-form-result{margin-top:40px}.prf-errors{background:linear-gradient(135deg,#f8d7da 0%,#f5c6cb 100%);color:#721c24;padding:25px;border-radius:10px;border:2px solid #f5c6cb;margin-bottom:30px;animation:slideIn 0.5s ease}.prf-error-header{margin-bottom:15px;font-size:17px;font-weight:700;display:flex;align-items:center;gap:10px}.prf-error-header::before{content:'!';background:#dc3545;color:#fff;width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700}.prf-errors ul{margin:0;padding-left:25px}.prf-errors li{margin-bottom:8px;padding-left:5px}.prf-success{background:linear-gradient(135deg,#d4edda 0%,#c3e6cb 100%);color:#155724;padding:30px;border-radius:10px;border:2px solid #c3e6cb;display:flex;align-items:center;gap:20px;animation:slideIn 0.5s ease}.prf-success-icon{width:60px;height:60px;background:var(--success-color);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:700;flex-shrink:0;box-shadow:0 4px 15px rgb(40 167 69 / .3)}.prf-success-content h4{margin:0 0 12px 0;font-size:20px;font-weight:700}.prf-success-content p{margin:0;font-size:15px;line-height:1.6}.prf-error-message{background:linear-gradient(135deg,#f8d7da 0%,#f5c6cb 100%);color:#721c24;padding:30px;border-radius:10px;border:2px solid #f5c6cb;display:flex;align-items:center;gap:20px;animation:slideIn 0.5s ease}.prf-error-icon{width:60px;height:60px;background:var(--error-color);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:700;flex-shrink:0;box-shadow:0 4px 15px rgb(220 53 69 / .3)}.prf-error-content h4{margin:0 0 12px 0;font-size:20px;font-weight:700}@keyframes slideIn{from{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@media (max-width:992px){.prf-form-wrap{margin:20px;padding:30px}.prf-vars-content{grid-template-columns:1fr;gap:20px}.prf-vars-preview{max-width:250px;margin:0 auto}}@media (max-width:768px){.prf-form-wrap{padding:25px 20px;margin:15px}.prf-progress-indicator{padding:0 15px;margin-bottom:30px}.prf-progress-indicator::before{left:15px;right:15px}.prf-step-indicator{width:40px;height:40px;font-size:14px}.prf-step-label{font-size:11px;top:calc(100% + 5px)}.prf-field-group{padding:20px}.prf-reference-pair-inner{flex-direction:column;gap:20px}.prf-reference-arrow{transform:rotate(90deg)}.prf-actions{flex-direction:column;gap:15px}.prf-actions .button{width:100%}.prf-examples-grid{grid-template-columns:repeat(2,1fr);gap:15px}.prf-upload-box{height:180px}.prf-success,.prf-error-message{flex-direction:column;text-align:center;gap:15px}}@media (max-width:480px){.prf-examples-grid{grid-template-columns:1fr}.prf-progress-indicator{flex-direction:column;align-items:flex-start;gap:15px;padding:0}.prf-progress-indicator::before{display:none}.prf-step-indicator{width:35px;height:35px}.prf-step-label{position:static;transform:none;margin-left:15px;display:inline}.prf-step-indicator{display:inline-flex;margin-right:10px}.prf-step{position:relative;margin-bottom:20px;padding-bottom:20px}.prf-step:not(:last-child)::after{content:'';position:absolute;bottom:-10px;left:0;right:0;height:1px;background:var(--border-color)}}.prf-del-btn:focus-visible{outline:3px solid var(--error-color);outline-offset:3px}.prf-upload-box,.prf-example-item,.prf-del-btn,.prf-reference-preview,.prf-text-example-item,.prf-vars-block,.prf-field-group,.button{cursor:pointer}input[type="file"]{cursor:pointer}.prf-form-wrap{scroll-behavior:smooth}.prf-field:disabled{background:#f8f9fa;cursor:not-allowed;opacity:.7}.prf-field-invalid{border-color:var(--error-color);background:#fff5f5}.prf-field-valid{border-color:var(--success-color);background:#f5fff7}.prf-tooltip{position:relative;display:inline-block;cursor:help}.prf-tooltip .prf-tooltip-text{visibility:hidden;width:200px;background:var(--text-primary);color:#fff;text-align:center;padding:10px;border-radius:6px;position:absolute;z-index:1000;bottom:125%;left:50%;transform:translateX(-50%);opacity:0;transition:opacity 0.3s;font-size:13px;font-weight:400;line-height:1.4}.prf-tooltip .prf-tooltip-text::after{content:"";position:absolute;top:100%;left:50%;margin-left:-5px;border-width:5px;border-style:solid;border-color:var(--text-primary) #fff0 #fff0 #fff0}.prf-tooltip:hover .prf-tooltip-text{visibility:visible;opacity:1}.prf-field{background-color:#f7f7f7!important;border-radius:11px!important}.prf-reference-pair{margin-bottom:30px;padding:25px;background:linear-gradient(135deg,#fff 0%,#f8f9fa 100%);border-radius:10px;border:1px solid #dee2e6;box-shadow:0 4px 15px rgb(0 0 0 / .05);transition:all 0.3s ease}.prf-reference-pair:hover{box-shadow:0 6px 20px rgb(0 0 0 / .08)}.prf-reference-pair-inner{display:flex;align-items:center;gap:30px}.prf-reference-input,.prf-reference-output{flex:1}.prf-reference-input label,.prf-reference-output label{display:block;margin-bottom:15px;font-weight:600;color:#333;font-size:15px}.prf-reference-upload-area{position:relative;margin-top:10px}.prf-reference-file-input{display:none}.prf-reference-upload-box{width:100%;height:150px;border:3px dashed #adb5bd;border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;transition:all 0.3s ease;background:linear-gradient(135deg,#f8f9fa 0%,#e9ecef 100%);text-align:center;position:relative;overflow:hidden}.prf-reference-upload-box:hover{border-color:#0073aa;background:linear-gradient(135deg,#f0f7ff 0%,#e3f2fd 100%);transform:translateY(-2px);box-shadow:0 8px 20px rgb(0 115 170 / .1)}.prf-reference-plus{font-size:40px;color:#adb5bd;line-height:1;margin-bottom:10px;font-weight:300;transition:all 0.3s ease}.prf-reference-upload-box:hover .prf-reference-plus{color:#0073aa;transform:scale(1.1)}.prf-reference-upload-box p{margin:0;color:#666;font-size:14px;font-weight:500}.prf-reference-output .prf-reference-preview{margin-top:15px;min-height:150px;border:3px solid #fff;border-radius:8px;padding:15px;display:flex;align-items:center;justify-content:center;box-shadow:0 5px 15px rgb(0 0 0 / .1)}.prf-reference-output .prf-reference-preview img{max-width:100%;max-height:150px;object-fit:contain;border-radius:6px}.prf-reference-input .prf-reference-preview{margin-top:15px;min-height:150px;border:3px solid #fff;border-radius:8px;padding:15px;background:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 5px 15px rgb(0 0 0 / .1);position:relative;display:none}.prf-reference-input .prf-reference-preview.has-image{display:flex}.prf-reference-input .prf-reference-preview img{max-width:100%;max-height:150px;object-fit:cover;border-radius:6px;border:2px solid #dee2e6}.prf-reference-input .prf-reference-preview .prf-del-btn{position:absolute;top:10px;right:10px;width:30px;height:30px;background:rgb(220 53 69 / .9);color:#fff;border:none;border-radius:50%;cursor:pointer;font-size:18px;line-height:1;display:flex;align-items:center;justify-content:center;transition:all 0.3s ease;z-index:2;backdrop-filter:blur(4px)}.prf-reference-input .prf-reference-preview .prf-del-btn:hover{background:#dc3545;transform:scale(1.1) rotate(90deg);box-shadow:0 4px 10px rgb(220 53 69 / .3)}@media (max-width:768px){.prf-reference-pair{padding:20px}.prf-reference-pair-inner{flex-direction:column;gap:20px}.prf-reference-arrow{transform:rotate(90deg)}.prf-reference-upload-box{height:120px}.prf-reference-output .prf-reference-preview,.prf-reference-input .prf-reference-preview{min-height:120px}}@media (max-width:480px){.prf-reference-pair{padding:15px}.prf-reference-upload-box{height:100px}.prf-reference-plus{font-size:30px;margin-bottom:5px}.prf-reference-upload-box p{font-size:12px}.prf-reference-input label,.prf-reference-output 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