.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, #059669, #047857);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, #059669);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:12px}.tool-header p{color:var(--gray-500);font-size:1rem}.stats-cards{display:flex;justify-content:center;gap:24px;margin-bottom:32px;flex-wrap:wrap}.stat-card{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)}.stat-icon{width:48px;height:48px;background:linear-gradient(135deg, #d1fae5, #ecfdf5);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#059669;font-size:1.3rem}.stat-info{text-align:left}.stat-value{display:block;font-size:1.5rem;font-weight:700;color:var(--gray-800)}.stat-label{font-size:0.7rem;color:var(--gray-500)}.tree-container{display:grid;grid-template-columns:1fr 300px;gap:24px;margin-bottom:24px}.input-section{background:linear-gradient(135deg, #fff, #fafafc);border-radius:24px;overflow:hidden;border:1px solid var(--gray-200)}.section-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)}.header-title{display:flex;align-items:center;gap:12px;font-weight:600;color:var(--gray-700)}.badge-count{background:#059669;color:white;padding:2px 10px;border-radius:30px;font-size:0.7rem}.header-actions{display:flex;gap:8px}.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:#059669}.tree-textarea{width:100%;min-height:320px;padding:20px;font-family:'Fira Code',monospace;font-size:0.85rem;line-height:1.6;border:none;resize:vertical;background:#1a1a2e;color:#e0e0e0}.tree-textarea:focus{outline:none}.input-tips{padding:10px 16px;background:var(--gray-50);border-top:1px solid var(--gray-200);display:flex;gap:20px;flex-wrap:wrap}.tip{font-size:0.7rem;color:var(--gray-500)}.tip i{margin-right:4px}.options-section{display:flex;flex-direction:column;gap:20px}.options-card{background:white;border-radius:20px;padding:16px;border:1px solid var(--gray-200)}.options-card h4{font-size:0.85rem;margin-bottom:16px;color:var(--gray-700);display:flex;align-items:center;gap:8px}.format-buttons{display:flex;gap:8px;flex-wrap:wrap}.format-btn{background:var(--gray-100);border:1px solid var(--gray-200);padding:8px 16px;border-radius:30px;font-size:0.75rem;cursor:pointer;transition:all 0.2s}.format-btn.active{background:#059669;border-color:#059669;color:white}.format-btn i{margin-right:6px}.options-grid{display:grid;grid-template-columns:repeat(2, 1fr);gap:12px}.checkbox-label{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:0.8rem;user-select:none}.checkbox-label input{display:none}.checkmark{width:16px;height:16px;border:2px solid var(--gray-400);border-radius:4px;display:inline-block;position:relative;transition:all 0.2s}.checkbox-label input:checked+.checkmark{background:#059669;border-color:#059669}.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%)}.symbol-selector{margin-top:8px}.select-input{width:100%;padding:8px 12px;border:1px solid var(--gray-300);border-radius:30px;font-size:0.8rem}.action-bar{display:flex;justify-content:center;gap:16px;margin-bottom:24px;flex-wrap:wrap}.generate-btn{background:linear-gradient(135deg, #059669, #047857);padding:12px 32px;border-radius:50px}.btn-outline{background:transparent;border:1px solid var(--gray-300);padding:10px 24px;border-radius:50px;cursor:pointer;transition:all 0.2s}.btn-outline:hover{background:var(--gray-100);border-color:#059669;color:#059669}.output-section{background:linear-gradient(135deg, #fff, #fafafc);border-radius:24px;overflow:hidden;border:1px solid var(--gray-200);margin-bottom:24px}.output-wrapper{max-height:400px;overflow:auto;background:#1a1a2e}.tree-output{margin:0;padding:20px;font-family:'Fira Code',monospace;font-size:0.85rem;line-height:1.6;color:#e0e0e0;white-space:pre-wrap;word-break:break-all}.visual-tree{background:white;border-radius:20px;border:1px solid var(--gray-200);margin-bottom:24px;overflow:hidden}.visual-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:linear-gradient(135deg, #f8fafc, #fff);cursor:pointer}.toggle-btn{background:transparent;border:none;cursor:pointer;color:var(--gray-500)}.visual-content{padding:20px;border-top:1px solid var(--gray-200);background:#f8fafc}.tree-visual{font-family:'Fira Code',monospace;font-size:0.85rem;line-height:1.8;color:var(--gray-800)}.tree-visual .folder{color:#059669;font-weight:500}.tree-visual .file{color:#6b7280}.tree-visual .icon{margin-right:6px}.info-section{margin-top:20px}.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(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}@media (max-width:900px){.tree-container{grid-template-columns:1fr}.info-grid{grid-template-columns:repeat(2, 1fr)}.options-grid{grid-template-columns:1fr}}@media (max-width:480px){.stats-cards{gap:12px}.stat-card{padding:12px 20px}.stat-value{font-size:1.2rem}.info-grid{grid-template-columns:1fr}.action-bar{flex-direction:column}.btn-outline{text-align:center}}