.text-diff-checker-wrapper{max-width:1300px;margin:20px auto;padding:20px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;line-height:1.6;color:#333;background:#fff!important;border-radius:16px;box-shadow:0 4px 25px rgb(0 0 0 / .1)}.diff-header{text-align:center;margin-bottom:30px;padding-bottom:20px;border-bottom:2px solid #f0f4f8}.diff-title{font-size:2.5rem;font-weight:700;margin:0 0 10px 0;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);-webkit-background-clip:text;-webkit-text-fill-color:#fff0;background-clip:text}.diff-description{font-size:1.1rem;color:#64748b;margin:0;font-weight:400}.diff-controls{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px;padding:25px;background:linear-gradient(135deg,#f8fafc 0%,#f1f5f9 100%);border-radius:12px;border:1px solid #e2e8f0;flex-wrap:wrap;gap:20px}.control-buttons{display:flex;gap:12px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border:none;border-radius:10px;font-size:.95rem;font-weight:600;cursor:pointer;transition:all 0.3s ease;text-decoration:none;white-space:nowrap;position:relative;overflow:hidden}.btn::before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgb(255 255 255 / .2),transparent);transition:left 0.5s}.btn:hover::before{left:100%}.btn:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgb(0 0 0 / .15)!important}#swap-texts:focus{color:black!important}.btn:active{transform:translateY(0)}.btn-primary{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%)!important;color:#fff;box-shadow:0 4px 15px rgb(102 126 234 / .3)}.btn-primary:hover{background:linear-gradient(135deg,#5a6fd8 0%,#6a4190 100%)!important;box-shadow:0 8px 25px rgb(102 126 234 / .4)}.btn-secondary{background:white!important;color:#475569;border:2px solid #e2e8f0;box-shadow:0 2px 8px rgb(0 0 0 / .05)}.btn-secondary:hover{background:#f8fafc;border-color:#cbd5e1;color:#334155}.diff-options{display:flex;gap:25px;flex-wrap:wrap}.option-label{display:flex;align-items:center;gap:10px;cursor:pointer;font-weight:500;color:#475569;position:relative;transition:color 0.2s ease}.option-label:hover{color:#334155}.option-label input[type="checkbox"]{appearance:none;width:20px;height:20px;border:2px solid #cbd5e1;border-radius:6px;position:relative;cursor:pointer;transition:all 0.3s ease;background:#fff}.option-label input[type="checkbox"]:checked{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border-color:#667eea;transform:scale(1.05)}.option-label input[type="checkbox"]:checked::after{content:"✓";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#fff;font-size:12px;font-weight:700}.diff-container{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:30px}.text-panel{background:#fff;border-radius:12px;box-shadow:0 4px 15px rgb(0 0 0 / .08);overflow:hidden;border:1px solid #e2e8f0;transition:box-shadow 0.3s ease}.text-panel:hover{box-shadow:0 8px 25px rgb(0 0 0 / .12)}.panel-header{display:flex;justify-content:space-between;align-items:center;padding:18px 24px;background:linear-gradient(135deg,#f8fafc 0%,#f1f5f9 100%);border-bottom:1px solid #e2e8f0}.panel-title{margin:0;font-size:1.1rem;font-weight:600;color:#334155}.char-count{font-size:.85rem;color:#64748b;font-weight:500;padding:4px 8px;background:#e2e8f0;border-radius:6px}.text-input{width:100%;border:none;padding:24px;resize:vertical;font-family:"SFMono-Regular","Monaco","Inconsolata","Fira Code","Fira Mono","Droid Sans Mono","Consolas","Liberation Mono","Menlo",monospace;font-size:.9rem;line-height:1.6;background:white!important;color:#1e293b;outline:none;transition:background-color 0.2s ease;min-height:200px}.text-input:focus{background:#fafbfc}.text-input::placeholder{color:#94a3b8;font-style:italic}.diff-results{margin-top:30px;background:#fff;border-radius:12px;box-shadow:0 4px 20px rgb(0 0 0 / .1);overflow:hidden;border:1px solid #e2e8f0}.results-header{display:flex;justify-content:space-between;align-items:center;padding:24px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff}.results-header h3{margin:0;font-size:1.3rem;font-weight:600}.diff-stats{display:flex;gap:18px;align-items:center}.stat{font-size:.9rem;font-weight:500;padding:6px 12px;border-radius:6px;background:rgb(255 255 255 / .2);backdrop-filter:blur(10px);border:1px solid rgb(255 255 255 / .1)}.results-container{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:#e2e8f0}.result-panel{background:#fff;padding:0}.result-title{margin:0;padding:18px 24px;background:linear-gradient(135deg,#f8fafc 0%,#f1f5f9 100%);font-size:1rem;font-weight:600;color:#334155;border-bottom:1px solid #e2e8f0}.result-content{padding:24px;font-family:"SFMono-Regular","Monaco","Inconsolata","Fira Code","Fira Mono","Droid Sans Mono","Consolas","Liberation Mono","Menlo",monospace;font-size:.9rem;line-height:1.8;white-space:pre-wrap;word-break:break-word;max-height:800px;overflow-y:auto;background:#fafbfc}.diff-line{display:flex;align-items:flex-start;border-bottom:1px solid #f1f5f9;min-height:24px;padding:2px 0}.diff-line:hover{background:rgb(0 0 0 / .02)}.line-number{display:inline-block;width:50px;text-align:right;padding-right:12px;color:#94a3b8;font-size:.85rem;user-select:none;flex-shrink:0;border-right:1px solid #e2e8f0;margin-right:12px;line-height:1.5}.line-content{flex:1;line-height:1.5;white-space:pre-wrap;word-break:break-word}.line-added{background:#f0fdf4;border-left:3px solid #22c55e}.line-added .line-number{background:#dcfce7;color:#166534}.line-removed{background:#fef2f2;border-left:3px solid #ef4444}.line-removed .line-number{background:#fee2e2;color:#991b1b}.line-unchanged .line-number{color:#64748b}.line-empty{background:#f8fafc;border-left:3px solid #e2e8f0;min-height:24px}.line-empty .line-number{color:#fff0;background:#f1f5f9}.line-empty .line-content{color:#fff0}.result-content::-webkit-scrollbar{width:8px}.result-content::-webkit-scrollbar-track{background:#f1f5f9;border-radius:4px}.result-content::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:4px}.result-content::-webkit-scrollbar-thumb:hover{background:#94a3b8}.diff-added{background:#bbf7d0;color:#065f46;padding:1px 3px;border-radius:3px;font-weight:500}.diff-removed{background:#fecaca;color:#991b1b;padding:1px 3px;border-radius:3px;text-decoration:line-through;font-weight:500}.diff-unchanged{color:#475569}.diff-legend{display:flex;justify-content:center;gap:35px;margin-top:25px;padding:20px;background:linear-gradient(135deg,#f8fafc 0%,#f1f5f9 100%);border-radius:12px;border:1px solid #e2e8f0}.legend-item{display:flex;align-items:center;gap:10px;font-size:.9rem;color:#475569;font-weight:500}.legend-color{width:18px;height:18px;border-radius:4px;border:1px solid #fff0}.legend-color.added{background:linear-gradient(135deg,#d1fae5 0%,#a7f3d0 100%);border-color:#86efac}.legend-color.removed{background:linear-gradient(135deg,#fee2e2 0%,#fecaca 100%);border-color:#f87171}.legend-color.unchanged{background:#f8fafc;border-color:#cbd5e1}.btn.loading{opacity:.8;cursor:not-allowed;pointer-events:none}.btn.loading .btn-text{opacity:.7}.btn.loading::after{content:"";position:absolute;width:16px;height:16px;border:2px solid #fff0;border-top:2px solid currentColor;border-radius:50%;animation:spin 1s linear infinite;right:12px}@keyframes spin{to{transform:rotate(360deg)}}.diff-results{animation:slideIn 0.4s cubic-bezier(.4,0,.2,1)}@keyframes slideIn{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.btn:focus{animation:pulse 0.3s ease-in-out}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.05)}100%{transform:scale(1)}}@keyframes slideInNotification{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}@keyframes slideOutNotification{from{transform:translateX(0);opacity:1}to{transform:translateX(100%);opacity:0}}@media (max-width:1024px){.text-diff-checker-wrapper{margin:10px;padding:15px}.diff-title{font-size:2rem}}@media (max-width:768px){.diff-container{grid-template-columns:1fr;gap:15px}.results-container{grid-template-columns:1fr}.diff-controls{flex-direction:column;align-items:stretch;gap:20px}.control-buttons{justify-content:center;flex-wrap:wrap}.diff-options{justify-content:center;flex-wrap:wrap}.results-header{flex-direction:column;gap:15px;text-align:center}.diff-stats{justify-content:center;flex-wrap:wrap}.diff-legend{flex-direction:column;gap:15px;align-items:center}.diff-title{font-size:1.8rem}.btn{padding:10px 16px;font-size:.9rem}}@media (max-width:480px){.text-diff-checker-wrapper{margin:5px;padding:10px}.diff-controls{padding:15px}.panel-header{padding:12px 16px;flex-direction:column;gap:8px;align-items:flex-start}.text-input{padding:16px;font-size:.85rem}.result-content{padding:16px;font-size:.85rem}.control-buttons{width:100%}.btn{flex:1;justify-content:center;min-width:0;font-size:11px;padding-right:29px}}@media print{.diff-controls,.diff-legend{display:none}.text-diff-checker-wrapper{box-shadow:none;border:1px solid #ccc}.diff-container{page-break-inside:avoid}}