.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, #8b5cf6, #7c3aed);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, #8b5cf6);-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, #ede9fe, #f5f3ff);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#8b5cf6;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)}.mode-tabs{display:flex;gap:16px;margin-bottom:28px;justify-content:center}.mode-tab{background:transparent;border:none;padding:14px 32px;cursor:pointer;transition:all 0.3s;border-radius:60px;text-align:center;min-width:140px;font-weight:600}.mode-tab i{font-size:1.2rem;margin-right:8px}.mode-tab.active{background:linear-gradient(135deg, #8b5cf6, #7c3aed);color:white;box-shadow:0 4px 15px rgba(139,92,246,0.3)}.params-section{background:linear-gradient(135deg, #faf5ff, #f3e8ff);border-radius:24px;padding:20px 24px;margin-bottom:24px;border:1px solid #e9d5ff}.params-section h3{font-size:0.9rem;margin-bottom:16px;color:#6b21a5;display:flex;align-items:center;gap:8px}.params-grid{display:grid;grid-template-columns:repeat(auto-fit, minmax(280px, 1fr));gap:20px}.param-item label{display:block;font-size:0.75rem;font-weight:600;color:#7c3aed;margin-bottom:8px}.param-input{width:100%;padding:12px 16px;border:1px solid #e9d5ff;border-radius:60px;font-family:monospace;background:white;transition:all 0.3s}.param-input:focus{outline:none;border-color:#8b5cf6;box-shadow:0 0 0 3px rgba(139,92,246,0.1)}.param-hint{display:block;font-size:0.65rem;color:var(--gray-400);margin-top:6px}.param-select-group{display:flex;gap:8px;flex-wrap:wrap}.param-btn{background:white;border:1px solid var(--gray-200);padding:8px 16px;border-radius:40px;font-size:0.75rem;cursor:pointer;transition:all 0.2s}.param-btn.active{background:#8b5cf6;border-color:#8b5cf6;color:white}.param-select{padding:8px 16px;border:1px solid var(--gray-200);border-radius:40px;background:white;font-size:0.85rem;cursor:pointer}.input-section,.output-section{background:var(--gray-50);border-radius:20px;overflow:hidden;margin-bottom:20px}.section-header{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;background:white;border-bottom:1px solid var(--gray-200);font-weight:500}.cipher-textarea{width:100%;min-height:150px;padding:20px;font-family:'Fira Code',monospace;font-size:0.9rem;line-height:1.6;border:none;resize:vertical;background:#1a1a2e;color:#e0e0e0}.cipher-textarea:focus{outline:none}.input-footer,.output-footer{padding:10px 20px;background:var(--gray-100);border-top:1px solid var(--gray-200);font-size:0.7rem;color:var(--gray-500);text-align:right}.output-content{min-height:150px;padding:20px;font-family:'Fira Code',monospace;font-size:0.9rem;line-height:1.6;background:#1a1a2e;color:#e0e0e0;word-break:break-all;white-space:pre-wrap}.action-buttons{display:flex;justify-content:center;gap:16px;margin-bottom:20px;flex-wrap:wrap}.process-btn{background:linear-gradient(135deg, #8b5cf6, #7c3aed);padding:12px 32px;font-size:1rem;border-radius:60px}.btn-outline{background:transparent;border:1px solid var(--gray-300);padding:12px 24px;border-radius:60px;font-weight:500;cursor:pointer;transition:all 0.3s;display:inline-flex;align-items:center;gap:8px}.btn-outline:hover{background:var(--gray-100);border-color:#8b5cf6;color:#8b5cf6}.icon-btn-sm{background:transparent;border:none;padding:6px 10px;border-radius:30px;cursor:pointer;transition:all 0.2s;color:var(--gray-500)}.icon-btn-sm:hover{background:var(--gray-100);color:#8b5cf6}.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-grid{display:grid;grid-template-columns:repeat(2, 1fr);gap:12px;padding:16px;background:var(--gray-50);border-radius:20px}.info-item{display:flex;align-items:center;gap:8px;font-size:0.75rem;color:var(--gray-600);padding:6px 0}.info-item i{color:#8b5cf6;width:20px}@media (max-width:768px){.params-grid{grid-template-columns:1fr}.info-grid{grid-template-columns:1fr}.mode-tab{padding:10px 20px;min-width:auto}.core-stats{gap:12px}.core-stat{padding:12px 20px}}