*{box-sizing:border-box;margin:0;padding:0}:root{--primary: #6366f1;--primary-dark: #4f46e5;--primary-light: #e0e7ff;--accent: #10b981;--accent-light: #d1fae5;--surface: #ffffff;--surface-2: #f8fafc;--surface-3: #f1f5f9;--border: #e2e8f0;--text-primary: #0f172a;--text-secondary: #64748b;--text-muted: #94a3b8;--sidebar-width: 260px;--header-height: 64px;--radius: 12px;--radius-sm: 8px;--shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);--shadow-md: 0 4px 12px rgba(0,0,0,.1), 0 8px 32px rgba(0,0,0,.08)}html,body{height:100%;font-family:Inter,system-ui,-apple-system,sans-serif;background:var(--surface-2);color:var(--text-primary);font-size:14px;line-height:1.6}h1,h2,h3,h4{font-weight:600;line-height:1.3}button{cursor:pointer;font-family:inherit}textarea,input,select{font-family:inherit}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;border:none;transition:all .2s ease;outline:none}.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.btn.btn-primary{background:var(--primary);color:#fff}.btn.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px #6366f159}.btn.btn-primary:active{transform:translateY(0)}.btn.btn-secondary{background:var(--surface-3);color:var(--text-primary);border:1px solid var(--border)}.btn.btn-secondary:hover{background:var(--border)}.btn.btn-accent{background:var(--accent);color:#fff}.btn.btn-accent:hover{background:#059669}.btn.btn-sm{padding:5px 12px;font-size:12px}.btn.btn-icon{padding:8px;width:36px;height:36px;justify-content:center}.card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow);padding:24px}.tag{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:500}.tag.tag-primary{background:var(--primary-light);color:var(--primary-dark)}.tag.tag-accent{background:var(--accent-light);color:#065f46}.form-group{display:flex;flex-direction:column;gap:6px}.form-group label{font-size:13px;font-weight:500;color:var(--text-secondary)}.form-control{width:100%;padding:9px 12px;border:1.5px solid var(--border);border-radius:var(--radius-sm);font-size:14px;transition:border-color .2s;background:var(--surface);color:var(--text-primary);outline:none}.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 3px #6366f11f}textarea.form-control{resize:vertical;min-height:140px}.result-box{background:var(--surface-3);border:1.5px solid var(--border);border-radius:var(--radius-sm);padding:14px 16px;font-family:Courier New,monospace;font-size:15px;word-break:break-all;color:var(--primary-dark);font-weight:600;letter-spacing:.5px}.copy-row{display:flex;align-items:center;gap:10px}.copy-row .result-box{flex:1}.copied-hint{font-size:12px;color:var(--accent);font-weight:500;animation:fadeIn .3s ease}.toggle-group{display:flex;background:var(--surface-3);border:1.5px solid var(--border);border-radius:var(--radius-sm);padding:3px;gap:2px;width:fit-content}.toggle-group button{padding:6px 14px;border:none;border-radius:6px;font-size:13px;font-weight:500;background:transparent;color:var(--text-secondary);transition:all .2s}.toggle-group button.active{background:var(--surface);color:var(--primary);box-shadow:0 1px 4px #0000001a}.toggle-group button:hover:not(.active){background:var(--border);color:var(--text-primary)}.checkbox-group{display:flex;align-items:center;gap:8px;cursor:pointer}.checkbox-group input[type=checkbox]{width:16px;height:16px;accent-color:var(--primary);cursor:pointer}.checkbox-group span{font-size:13px;color:var(--text-secondary);font-weight:500;-webkit-user-select:none;user-select:none}.section-title{font-size:13px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.8px;margin-bottom:12px}.divider{height:1px;background:var(--border);margin:20px 0}@keyframes fadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .3s ease}.page-header{margin-bottom:28px}.page-header h1{font-size:24px;color:var(--text-primary)}.page-header p{color:var(--text-secondary);margin-top:4px;font-size:14px}.material-icons-round{font-size:20px;line-height:1;vertical-align:middle}