:root{--primary:#2563eb;--primary-dark:#1d4ed8;--bg:#f8fafc;--surface:#fff;--text:#1e293b;--text-light:#64748b;--border:#e2e8f0;--radius:8px;--shadow:0 1px 3px #0000001a}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;line-height:1.6}.app{flex-direction:column;min-height:100vh;display:flex}.navbar{background:var(--surface);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:1rem 2rem;display:flex}.logo{color:var(--primary);font-size:1.5rem;font-weight:700;text-decoration:none}.nav-links{gap:1.5rem;display:flex}.nav-links a{color:var(--text-light);font-size:.9rem;text-decoration:none;transition:color .2s}.nav-links a:hover{color:var(--primary)}main{flex:1;width:100%;max-width:1200px;margin:0 auto;padding:2rem}.hero{text-align:center;margin-bottom:2rem}.hero h1{margin-bottom:.5rem;font-size:2.5rem}.hero p{color:var(--text-light);font-size:1.1rem}.input-form{max-width:800px;margin:0 auto}.mode-tabs{grid-template-columns:repeat(4,1fr);gap:.5rem;margin-bottom:1rem;display:grid}.mode-tab{background:var(--surface);border:2px solid var(--border);border-radius:var(--radius);cursor:pointer;text-align:center;padding:.75rem;transition:all .2s}.mode-tab:hover{border-color:var(--primary)}.mode-tab.active{border-color:var(--primary);background:#eff6ff}.mode-label{font-size:.95rem;font-weight:600;display:block}.mode-desc{color:var(--text-light);margin-top:.25rem;font-size:.75rem;display:block}.input-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.5rem}.detail-selector{align-items:center;gap:1rem;margin-bottom:1rem;display:flex}.detail-selector label{font-weight:500}.detail-selector select{border:1px solid var(--border);border-radius:var(--radius);padding:.5rem;font-size:1rem}.input-textarea{border:1px solid var(--border);border-radius:var(--radius);resize:vertical;width:100%;min-height:150px;padding:1rem;font-family:inherit;font-size:1rem}.input-textarea:focus{border-color:var(--primary);outline:none}.input-meta{color:var(--text-light);text-align:right;margin-top:.5rem;font-size:.8rem}.submit-btn{background:var(--primary);color:#fff;border-radius:var(--radius);cursor:pointer;border:none;width:100%;margin-top:1rem;padding:1rem;font-size:1.1rem;font-weight:600;transition:background .2s;display:block}.submit-btn:hover:not(:disabled){background:var(--primary-dark)}.submit-btn:disabled{opacity:.5;cursor:not-allowed}.popular{margin-top:3rem}.popular h2{text-align:center;color:var(--text-light);margin-bottom:1.5rem}.popular-grid{grid-template-columns:repeat(3,1fr);gap:1rem;max-width:800px;margin:0 auto;display:grid}.popular-item{background:var(--surface);border-radius:var(--radius);color:var(--text);text-align:center;border:1px solid var(--border);padding:1rem;text-decoration:none;transition:all .2s}.popular-item:hover{border-color:var(--primary);color:var(--primary)}.result-page{padding:0}.result-container{grid-template-columns:1fr 300px;gap:2rem;max-width:1200px;margin:0 auto;display:grid}.result-main{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);padding:2rem}.result-output{border-radius:var(--radius);white-space:pre-wrap;background:#f1f5f9;margin:1.5rem 0;padding:1.5rem;line-height:1.8}.result-actions{gap:1rem;display:flex}.action-btn{border:1px solid var(--border);background:var(--surface);border-radius:var(--radius);cursor:pointer;padding:.5rem 1.5rem;transition:all .2s}.action-btn:hover{border-color:var(--primary);color:var(--primary)}.try-another{border-top:1px solid var(--border);margin-top:2rem;padding-top:2rem}.try-another h3{margin-bottom:1rem}.try-btn{background:var(--primary);color:#fff;border-radius:var(--radius);padding:.75rem 1.5rem;font-weight:500;text-decoration:none;display:inline-block}.try-btn:hover{background:var(--primary-dark)}.result-sidebar{flex-direction:column;gap:1.5rem;display:flex}.related-tools{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);padding:1.5rem}.related-tools h3{margin-bottom:1rem;font-size:1rem}.related-tools a{color:var(--text-light);border-bottom:1px solid var(--border);padding:.5rem 0;text-decoration:none;display:block}.related-tools a:last-child{border-bottom:none}.related-tools a:hover{color:var(--primary)}.ad-unit{border-radius:var(--radius);background:#f1f5f9;justify-content:center;align-items:center;display:flex}.ad-placeholder{color:var(--text-light);padding:1rem;font-size:.8rem}.ad-top{max-width:728px;height:90px;margin-bottom:1.5rem;margin-left:auto;margin-right:auto}.ad-mid{max-width:728px;height:90px;margin:2rem auto}.ad-sidebar{height:250px}.ad-bottom{max-width:970px;height:250px;margin:2rem auto}.loading{text-align:center;color:var(--text-light);padding:4rem}.footer{background:var(--surface);border-top:1px solid var(--border);margin-top:auto;padding:2rem}.footer-links{flex-wrap:wrap;justify-content:center;gap:1rem;margin-bottom:1rem;display:flex}.footer-links a{color:var(--text-light);font-size:.9rem;text-decoration:none}.footer-links a:hover{color:var(--primary)}.footer p{text-align:center;color:var(--text-light);font-size:.85rem}@media (width<=768px){.mode-tabs{grid-template-columns:repeat(2,1fr)}.result-container{grid-template-columns:1fr}.popular-grid{grid-template-columns:repeat(2,1fr)}.navbar{flex-direction:column;gap:1rem}}