.stats-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px;margin-bottom:30px}.stat-card{background:white;border-radius:20px;padding:20px;display:flex;align-items:center;gap:16px;border:1px solid var(--gray-200);transition:all 0.3s}.stat-card:hover{transform:translateY(-4px);box-shadow:0 10px 30px rgba(0,0,0,0.1)}.stat-icon{width:50px;height:50px;background:linear-gradient(135deg, #e0e7ff, #f0f4ff);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--primary-color)}.stat-value{font-size:1.6rem;font-weight:700;color:var(--gray-800)}.stat-label{font-size:0.75rem;color:var(--gray-500)}.input-mode-tabs{display:flex;gap:12px;margin-bottom:20px;border-bottom:1px solid var(--gray-200);padding-bottom:12px}.input-mode-btn{background:transparent;border:none;padding:8px 24px;border-radius:40px;cursor:pointer;font-size:0.9rem;transition:all 0.2s;color:var(--gray-600)}.input-mode-btn.active{background:var(--primary-color);color:white}.compare-inputs{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:24px}.input-panel{background:white;border-radius:20px;overflow:hidden;border:1px solid var(--gray-200)}.panel-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:linear-gradient(135deg, var(--gray-50), #fafafa);border-bottom:1px solid var(--gray-200);flex-wrap:wrap;gap:8px}.panel-title{display:flex;align-items:center;gap:12px}.input-label{font-weight:600;font-size:0.9rem}.input-badge{font-size:0.7rem;color:var(--gray-500);background:var(--gray-200);padding:2px 10px;border-radius:20px}.left-panel .input-label{color:var(--primary-color)}.right-panel .input-label{color:#8b5cf6}.panel-actions{display:flex;gap:4px}.compare-textarea{width:100%;min-height:200px;padding:16px;font-family:'Fira Code',monospace;font-size:0.9rem;border:none;resize:vertical;background:#1a1a2e;color:#e0e0e0;line-height:1.6}.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)}.file-mode{margin-bottom:20px}.file-upload-area{border:2px dashed var(--gray-300);border-radius:16px;padding:24px;text-align:center;cursor:pointer}.file-upload-area i{font-size:36px;color:var(--gray-400);margin-bottom:8px}.file-name{margin-left:12px;font-size:0.85rem;color:var(--primary-color)}.compare-options{background:var(--gray-50);border-radius:16px;padding:16px 20px;margin-bottom:24px;border:1px solid var(--gray-200);display:flex;flex-wrap:wrap;gap:32px}.option-group{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.option-title{font-weight:600;font-size:0.85rem;color:var(--gray-700);display:flex;align-items:center;gap:6px}.option-items{display:flex;flex-wrap:wrap;gap:16px}.checkbox-label{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:0.85rem}.checkbox-label input{display:none}.checkmark{width:18px;height:18px;border:2px solid var(--gray-400);border-radius:4px;display:inline-block;position:relative;transition:all 0.2s}.checkbox-label input:checked+.checkmark{background:var(--primary-color);border-color:var(--primary-color)}.checkbox-label input:checked+.checkmark::after{content:'\f00c';font-family:'Font Awesome 6 Free';font-weight:900;font-size:10px;color:white;position:absolute;top:50%;left:50%;transform:translate(-50%, -50%)}.select-input-sm{padding:6px 12px;border:1px solid var(--gray-300);border-radius:30px;background:white}.action-bar{display:flex;justify-content:center;gap:16px;margin-bottom:24px;flex-wrap:wrap}.btn-compare{padding:12px 32px;border-radius:40px;font-size:1rem}.result-panel{margin-bottom:24px;border:1px solid var(--gray-200);border-radius:16px;overflow:hidden;animation:fadeIn 0.3s ease}.result-header{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;background:linear-gradient(135deg, var(--gray-50), #fafafa);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:20px;font-size:0.75rem;font-weight:500}.stat-badge.same{background:#d1fae5;color:#065f46}.stat-badge.diff{background:#fee2e2;color:#991b1b}.stat-badge.similarity{background:#e0e7ff;color:#3730a3}.diff-result{padding:16px;max-height:400px;overflow-y:auto;background:#1a1a2e;font-family:'Fira Code',monospace;font-size:13px;line-height:1.6}.diff-line{display:flex;margin-bottom:2px;border-radius:4px}.diff-line-number{width:40px;text-align:right;padding:2px 8px;color:#6b7280;background:#2d2d44;user-select:none}.diff-line-content{flex:1;padding:2px 8px;white-space:pre-wrap;word-break:break-all}.diff-line-added{background:#1a3a1a}.diff-line-added .diff-line-content{color:#4ade80}.diff-line-removed{background:#3a1a1a}.diff-line-removed .diff-line-content{color:#f87171}.diff-line-context{background:#2d2d44;color:#cbd5e1}.diff-highlight{background:#fbbf24;color:#1e293b;border-radius:3px;padding:0 2px}.method-tabs{display:flex;gap:12px;flex-wrap:wrap}.method-btn{background:var(--gray-100);border:1px solid var(--gray-200);padding:8px 20px;border-radius:40px;cursor:pointer;transition:all 0.2s}.method-btn.active{background:var(--primary-color);color:white}.knowledge-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px;margin-top:20px}.knowledge-card{background:var(--gray-50);border-radius:16px;padding:20px;text-align:center}.knowledge-card i{font-size:28px;color:var(--primary-color);margin-bottom:12px}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width:900px){.compare-inputs{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2, 1fr)}.knowledge-grid{grid-template-columns:repeat(2, 1fr)}.result-header{flex-direction:column;align-items:flex-start}.compare-options{flex-direction:column;gap:16px}}@media (max-width:600px){.stats-grid{grid-template-columns:1fr}.knowledge-grid{grid-template-columns:1fr}}