.tool-header{text-align:center;margin-bottom:40px}.header-badge{display:flex;justify-content:center;gap:12px;margin-bottom:24px;flex-wrap:wrap}.badge{background:linear-gradient(135deg, #10b981, #059669);color:white;padding:6px 18px;border-radius:40px;font-size:0.75rem;font-weight:500;box-shadow:0 2px 8px rgba(0,0,0,0.1)}.tool-header h1{font-size:2.2rem;font-weight:800;background:linear-gradient(135deg, #1e293b, #10b981);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:12px}.tool-header p{color:var(--gray-500);font-size:1rem}.core-stats{display:flex;justify-content:center;gap:24px;margin-bottom:32px;flex-wrap:wrap}.core-stat{background:white;border-radius:60px;padding:16px 28px;display:flex;align-items:center;gap:16px;box-shadow:0 4px 15px rgba(0,0,0,0.05);border:1px solid var(--gray-200)}.core-stat-icon{width:48px;height:48px;background:linear-gradient(135deg, #d1fae5, #a7f3d0);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#10b981;font-size:1.3rem}.core-stat-info{text-align:left}.core-stat-value{display:block;font-size:1.5rem;font-weight:700;color:var(--gray-800)}.core-stat-label{font-size:0.7rem;color:var(--gray-500)}.input-tabs{display:flex;gap:12px;margin-bottom:24px;justify-content:center}.input-tab{background:transparent;border:none;padding:12px 28px;cursor:pointer;transition:all 0.3s;border-radius:60px;text-align:center;font-weight:500}.input-tab i{margin-right:8px}.input-tab.active{background:linear-gradient(135deg, #10b981, #059669);color:white;box-shadow:0 4px 12px rgba(16,185,129,0.3)}.editor-card,.random-card,.batch-card{background:linear-gradient(135deg, #f8fafc, #fff);border-radius:24px;padding:20px;margin-bottom:24px;border:1px solid var(--gray-200)}.editor-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;flex-wrap:wrap;gap:12px}.editor-title{display:flex;align-items:center;gap:12px;font-weight:600;color:var(--gray-700)}.format-hint{font-size:0.7rem;font-weight:normal;color:var(--gray-400)}.editor-actions{display:flex;gap:8px}.action-icon{background:transparent;border:none;padding:6px 10px;border-radius:30px;cursor:pointer;transition:all 0.2s;color:var(--gray-500)}.action-icon:hover{background:var(--gray-100);color:#10b981}.number-textarea{width:100%;min-height:150px;padding:16px;border:1px solid var(--gray-200);border-radius:16px;font-family:'Fira Code',monospace;font-size:0.9rem;line-height:1.6;resize:vertical;background:white}.number-textarea:focus{outline:none;border-color:#10b981;box-shadow:0 0 0 3px rgba(16,185,129,0.1)}.random-controls{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px;margin-bottom:20px}.control-group label{display:block;font-size:0.7rem;font-weight:500;color:var(--gray-500);margin-bottom:8px}.control-input,.control-select{width:100%;padding:10px 12px;border:1px solid var(--gray-200);border-radius:12px;font-size:0.9rem;background:white}.generate-btn{width:100%;padding:12px}.batch-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.btn-outline-sm{background:transparent;border:1px solid var(--gray-300);padding:6px 14px;border-radius:30px;cursor:pointer;font-size:0.8rem;transition:all 0.2s}.btn-outline-sm:hover{background:#10b981;border-color:#10b981;color:white}.batch-groups{max-height:300px;overflow-y:auto;margin-bottom:16px}.batch-group-item{background:var(--gray-50);border-radius:16px;padding:12px;margin-bottom:12px;position:relative}.batch-group-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.batch-group-title{font-weight:600;font-size:0.8rem;color:var(--gray-600)}.batch-group-actions{display:flex;gap:8px}.batch-group-input{width:100%;padding:10px;border:1px solid var(--gray-200);border-radius:12px;font-family:monospace;font-size:0.85rem}.sort-options{background:var(--gray-50);border-radius:20px;padding:20px;margin-bottom:24px;display:flex;flex-wrap:wrap;gap:32px}.option-group{flex:1;min-width:200px}.option-title{font-weight:600;font-size:0.85rem;color:var(--gray-700);margin-bottom:12px;display:block}.sort-buttons{display:flex;flex-wrap:wrap;gap:12px}.sort-btn{background:white;border:1px solid var(--gray-200);padding:10px 20px;border-radius:40px;cursor:pointer;transition:all 0.2s;text-align:center;min-width:90px}.sort-btn i{display:block;font-size:1rem;margin-bottom:4px}.sort-btn span{display:block;font-size:0.8rem;font-weight:500}.sort-btn small{font-size:0.65rem;color:var(--gray-400)}.sort-btn.active{background:#10b981;border-color:#10b981;color:white}.sort-btn.active small{color:rgba(255,255,255,0.7)}.advanced-options{display:flex;flex-wrap:wrap;gap:16px}.checkbox-label{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:0.85rem;user-select:none}.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:#10b981;border-color:#10b981}.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%)}.action-buttons{display:flex;justify-content:center;gap:16px;margin-bottom:24px;flex-wrap:wrap}.sort-main-btn{background:linear-gradient(135deg, #10b981, #059669);padding:14px 32px;font-size:1rem;border-radius:50px}.btn-outline{background:transparent;border:1px solid var(--gray-300);padding:12px 24px;border-radius:50px;font-weight:500;cursor:pointer;transition:all 0.3s}.btn-outline:hover{background:#10b981;border-color:#10b981;color:white}.sort-result{margin-top:24px;animation:fadeIn 0.4s ease}.result-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding-bottom:12px;border-bottom:1px solid var(--gray-200)}.result-title{display:flex;align-items:center;gap:10px;font-weight:600}.result-stats{font-size:0.75rem;color:var(--gray-500)}.result-numbers{background:#1a1a2e;border-radius:20px;padding:20px;margin-bottom:20px;font-family:'Fira Code',monospace;font-size:0.9rem;line-height:1.8;word-break:break-all;color:#e0e0e0}.visualization-section{background:white;border-radius:20px;padding:16px;border:1px solid var(--gray-200)}.viz-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.viz-tabs{display:flex;gap:8px}.viz-tab{background:transparent;border:none;padding:4px 12px;border-radius:20px;font-size:0.7rem;cursor:pointer;color:var(--gray-500)}.viz-tab.active{background:#10b981;color:white}#sortChart{max-height:250px;width:100%}.info-section{margin-top:24px}.info-steps{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding:20px;background:var(--gray-50);border-radius:20px}.step{flex:1;display:flex;align-items:center;gap:10px;font-size:0.8rem;color:var(--gray-600)}.step i{width:28px;height:28px;background:white;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;color:#10b981}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width:900px){.random-controls{grid-template-columns:repeat(2, 1fr)}.sort-options{flex-direction:column;gap:20px}.info-steps{flex-direction:column}}@media (max-width:768px){.core-stats{gap:12px}.core-stat{padding:12px 20px}.random-controls{grid-template-columns:1fr}.sort-buttons{justify-content:center}.action-buttons{flex-direction:column;align-items:stretch}.btn-outline,.sort-main-btn{text-align:center}}