.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)}.encode-tabs{display:flex;gap:8px;margin-bottom:24px;flex-wrap:wrap;justify-content:center}.encode-tab{background:transparent;border:none;padding:12px 20px;cursor:pointer;transition:all 0.3s;border-radius:60px;text-align:center;min-width:110px}.encode-tab i{font-size:1.2rem;margin-bottom:4px;display:block}.encode-tab span{display:block;font-size:0.85rem;font-weight:500}.encode-tab small{font-size:0.65rem;color:var(--gray-400)}.encode-tab.active{background:linear-gradient(135deg, #8b5cf6, #7c3aed);box-shadow:0 4px 12px rgba(139,92,246,0.3)}.encode-tab.active i,.encode-tab.active span,.encode-tab.active small{color:white}.encode-panel{background:white;border-radius:24px;padding:20px;border:1px solid var(--gray-200)}.panel-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding-bottom:12px;border-bottom:1px solid var(--gray-200);flex-wrap:wrap;gap:12px}.panel-title{font-weight:600;display:flex;align-items:center;gap:8px}.panel-options{display:flex;gap:16px;flex-wrap:wrap}.dual-editor{display:grid;grid-template-columns:1fr 1fr;gap:24px}.editor-box{background:var(--gray-50);border-radius:20px;overflow:hidden}.editor-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:white;border-bottom:1px solid var(--gray-200);font-size:0.85rem;font-weight:500}.editor-actions{display:flex;gap:8px}.encode-textarea{width:100%;min-height:200px;padding:16px;font-family:'Fira Code',monospace;font-size:13px;line-height:1.6;border:none;resize:vertical;background:#1a1a2e;color:#e0e0e0}.encode-textarea:focus{outline:none}.convert-btn{width:calc(68%);margin:12px 16px;padding:8px;border-radius:40px;font-weight:500;cursor:pointer;transition:all 0.2s}.encode-btn{background:#8b5cf6;color:white;border:none}.decode-btn{background:var(--gray-200);border:none}.encode-btn:hover{background:#7c3aed}.decode-btn:hover{background:var(--gray-300)}.clear-btn,.copy-btn{background:transparent;border:none;padding:4px 8px;border-radius:20px;cursor:pointer;color:var(--gray-500)}.clear-btn:hover,.copy-btn:hover{background:var(--gray-200);color:#8b5cf6}.checkbox-label{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:0.75rem}.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:#8b5cf6;border-color:#8b5cf6}.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%)}.select-input-sm{padding:4px 12px;border:1px solid var(--gray-300);border-radius:20px;font-size:0.75rem}.btn-secondary-sm{background:var(--gray-200);border:none;padding:6px 12px;border-radius:20px;cursor:pointer;font-size:0.75rem}.file-upload-area{margin-top:20px;padding:16px;background:var(--gray-50);border-radius:16px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}.file-result{flex:1;font-size:0.7rem;color:var(--gray-500);word-break:break-all}.quick-examples{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)}.example-buttons{display:flex;flex-wrap:wrap;gap:12px}.example-btn{background:var(--gray-100);border:1px solid var(--gray-200);padding:6px 16px;border-radius:40px;cursor:pointer;font-size:0.8rem;transition:all 0.2s}.example-btn:hover{background:#8b5cf6;color:white}.info-section{margin-top:24px}.info-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:16px;padding:16px;background:var(--gray-50);border-radius:20px}.info-item{display:flex;align-items:center;gap:8px;font-size:0.8rem;color:var(--gray-600)}.info-item i{color:#10b981}.modal{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.5);display:flex;align-items:center;justify-content:center;z-index:1000}.modal-content{background:white;border-radius:24px;max-width:800px;max-height:80%;overflow:auto}.modal-header{display:flex;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--gray-200)}.modal-body{padding:20px}@media (max-width:900px){.dual-editor{grid-template-columns:1fr}.info-grid{grid-template-columns:repeat(2, 1fr)}}