.tool-header{text-align:center;margin-bottom:32px}.header-badge{display:flex;justify-content:center;gap:12px;margin-bottom:20px;flex-wrap:wrap}.badge{background:linear-gradient(135deg, #3b82f6, #1d4ed8);color:white;padding:6px 18px;border-radius:40px;font-size:0.75rem;font-weight:500}.tool-header h1{font-size:2rem;font-weight:700;background:linear-gradient(135deg, #1e293b, #3b82f6);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:8px}.tool-header p{color:var(--gray-500)}.encoding-bar{display:flex;gap:24px;margin-bottom:20px;padding:12px 20px;background:var(--gray-50);border-radius:60px;border:1px solid var(--gray-200);flex-wrap:wrap;align-items:center}.encoding-item{display:flex;align-items:center;gap:12px}.encoding-label{font-size:0.8rem;color:var(--gray-600)}.encoding-select{padding:6px 12px;border:1px solid var(--gray-300);border-radius:30px;background:white;font-size:0.8rem;cursor:pointer}.swap-btn{background:transparent;border:1px solid var(--gray-300);padding:6px 16px;border-radius:30px;cursor:pointer;transition:all 0.2s;display:flex;align-items:center;gap:6px;font-size:0.8rem}.swap-btn:hover{background:var(--gray-100);border-color:#3b82f6;color:#3b82f6}.compare-editors{display:flex;gap:0;margin-bottom:20px;position:relative}.editor-panel{flex:1;background:white;border-radius:20px;overflow:hidden;border:1px solid var(--gray-200);transition:box-shadow .3s}.left-panel{border-radius:20px 0 0 20px;border-right:none}.right-panel{border-radius:0 20px 20px 0}.diff-gutter{width:40px;background:linear-gradient(135deg, #f8fafc, #fff);border-top:1px solid var(--gray-200);border-bottom:1px solid var(--gray-200);display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative}.diff-icon{position:absolute;top:50%;transform:translateY(-50%);font-size:1.2rem;color:#3b82f6;background:white;padding:8px;border-radius:50%;box-shadow:0 2px 8px rgba(0,0,0,0.1)}.panel-toolbar{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:linear-gradient(135deg, #f8fafc, #fff);border-bottom:1px solid var(--gray-200)}.toolbar-left{display:flex;align-items:center;gap:12px}.panel-title{font-weight:600;font-size:0.85rem;color:var(--gray-700)}.panel-title i{color:#3b82f6;margin-right:6px}.file-status{font-size:0.7rem;color:var(--gray-400)}.toolbar-right{display:flex;gap:8px}.file-upload-label,.tool-btn{background:transparent;border:none;padding:4px 10px;border-radius:30px;cursor:pointer;font-size:0.75rem;transition:all 0.2s;color:var(--gray-600);display:inline-flex;align-items:center;gap:6px}.file-upload-label:hover,.tool-btn:hover{background:var(--gray-100);color:#3b82f6}.compare-textarea{width:100%;min-height:300px;padding:16px;font-family:'Fira Code',monospace;font-size:13px;line-height:1.6;border:none;resize:vertical;background:#1a1a2e;color:#e0e0e0}.compare-textarea:focus{outline:none}.panel-footer{padding:8px 16px;background:var(--gray-50);border-top:1px solid var(--gray-200);display:flex;gap:20px;font-size:0.7rem;color:var(--gray-500)}.compare-options{display:flex;justify-content:space-between;align-items:center;background:var(--gray-50);border-radius:60px;padding:8px 20px;margin-bottom:24px;flex-wrap:wrap;gap:16px}.option-group{display:flex;align-items:center;gap:24px;flex-wrap:wrap}.option-title{font-size:0.8rem;color:var(--gray-600);display:flex;align-items:center;gap:6px}.option-items{display:flex;gap:20px;flex-wrap:wrap}.checkbox-label{display:flex;align-items:center;gap:6px;cursor:pointer;font-size:0.8rem}.checkbox-label input{display:none}.checkmark{width:16px;height:16px;border:2px solid var(--gray-400);border-radius:4px;display:inline-block;position:relative}.checkbox-label input:checked+.checkmark{background:#3b82f6;border-color:#3b82f6}.checkbox-label input:checked+.checkmark::after{content:'\f00c';font-family:'Font Awesome 6 Free';font-weight:900;font-size:9px;color:white;position:absolute;top:50%;left:50%;transform:translate(-50%, -50%)}.compare-btn{background:linear-gradient(135deg, #3b82f6, #1d4ed8);border:none;padding:8px 28px;border-radius:40px;color:white;font-weight:500;cursor:pointer;transition:all 0.3s}.compare-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(59,130,246,0.3)}.result-panel{margin-top:20px;background:white;border-radius:20px;overflow:hidden;border:1px solid var(--gray-200);animation:fadeIn 0.3s ease}.result-header{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;background:linear-gradient(135deg, #f8fafc, #fff);border-bottom:1px solid var(--gray-200);flex-wrap:wrap;gap:12px}.result-title{display:flex;align-items:center;gap:8px;font-weight:600}.result-stats{display:flex;gap:16px}.stat-badge{padding:4px 12px;border-radius:30px;font-size:0.7rem;font-weight:500}.stat-badge.same{background:#d1fae5;color:#065f46}.stat-badge.diff{background:#fee2e2;color:#991b1b}.stat-badge.similarity{background:#e0e7ff;color:#3730a3}.result-actions{display:flex;gap:8px}.action-btn{background:transparent;border:1px solid var(--gray-200);padding:4px 12px;border-radius:30px;cursor:pointer;font-size:0.7rem;transition:all 0.2s}.action-btn:hover{background:var(--gray-100);border-color:#3b82f6;color:#3b82f6}.diff-result{max-height:400px;overflow-y:auto;background:#1a1a2e;font-family:'Fira Code',monospace;font-size:13px;line-height:1.6}.diff-line{display:flex;border-bottom:1px solid rgba(255,255,255,0.05)}.diff-line-number{width:50px;text-align:right;padding:4px 12px;color:#6b7280;background:#2d2d44;user-select:none;font-size:11px;border-right:1px solid rgba(255,255,255,0.05)}.diff-line-content{flex:1;padding:4px 12px;white-space:pre-wrap;word-break:break-all}.diff-line-added{background:#1a3a1a}.diff-line-added .diff-line-content{background:#1a3a1a;color:#4ade80}.diff-line-removed{background:#3a1a1a}.diff-line-removed .diff-line-content{background:#3a1a1a;color:#f87171}.diff-line-context{background:#2d2d44}.diff-line-context .diff-line-content{background:#2d2d44;color:#cbd5e1}.diff-line-changed{background:#4a3a1a}.diff-line-changed .diff-line-content{background:#4a3a1a;color:#fbbf24}.diff-highlight{background:#fbbf24;color:#1e293b;border-radius:3px;padding:0 2px}.info-section{margin-top:24px}.divider{display:flex;align-items:center;gap:12px;margin-bottom:16px}.divider span{font-size:0.85rem;font-weight:500;color:var(--gray-600)}.divider::after{content:'';flex:1;height:1px;background:var(--gray-200)}.info-content{padding:16px;background:var(--gray-50);border-radius:16px;font-size:0.8rem;color:var(--gray-600);line-height:1.6}.diff-added-example{background:#1a3a1a;color:#4ade80;padding:2px 6px;border-radius:4px}.diff-removed-example{background:#3a1a1a;color:#f87171;padding:2px 6px;border-radius:4px}.diff-changed-example{background:#4a3a1a;color:#fbbf24;padding:2px 6px;border-radius:4px}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width:900px){.compare-editors{flex-direction:column}.diff-gutter{display:none}.left-panel{border-radius:20px;border-right:1px solid var(--gray-200);margin-bottom:16px}.right-panel{border-radius:20px}.compare-options{flex-direction:column;align-items:stretch;border-radius:20px}.option-group{flex-wrap:wrap}.result-header{flex-direction:column;align-items:flex-start}}@media (max-width:480px){.encoding-bar{flex-direction:column;align-items:stretch;border-radius:20px}.option-items{flex-wrap:wrap}.diff-line-number{width:40px;padding:4px 8px;font-size:10px}}