:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0}:root{--primary-color: #4361ee;--secondary-color: #3a0ca3;--success-color: #4cc9f0;--danger-color: #f72585;--light-color: #f8f9fa;--dark-color: #212529;--gray-color: #6c757d;--border-color: #dee2e6;--card-shadow: 0 4px 6px rgba(0, 0, 0, .1);--transition: all .3s ease}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;color:var(--dark-color);background-color:#f5f7fa}.App{display:flex;flex-direction:column;min-height:100vh}.app-header{background-color:var(--primary-color);color:#fff;padding:1.5rem;text-align:center;box-shadow:var(--card-shadow)}.header-content{display:flex;justify-content:center;align-items:center;gap:1rem;margin-bottom:.5rem}.header-subtitle{opacity:.9;font-size:.9rem}.app-main{flex:1;padding:2rem;max-width:1200px;margin:0 auto;width:100%}.app-footer{background-color:var(--dark-color);color:#fff;text-align:center;padding:1rem;font-size:.8rem}.card{background-color:#fff;border-radius:8px;box-shadow:var(--card-shadow);padding:1.5rem;margin-bottom:1.5rem}.tabs{display:flex;gap:.5rem;margin-bottom:1.5rem;border-bottom:1px solid var(--border-color);padding-bottom:.5rem}.tab-button{padding:.5rem 1rem;background:none;border:none;border-radius:4px;cursor:pointer;font-weight:500;transition:var(--transition)}.tab-button:hover{background-color:#0000000d}.tab-button.active{background-color:var(--primary-color);color:#fff}.sync-button{margin-left:auto;padding:.5rem 1rem;background-color:var(--success-color);color:#fff;border:none;border-radius:4px;cursor:pointer;font-weight:500;transition:var(--transition)}.sync-button:hover{background-color:#3aa8d8}.sync-button:disabled{background-color:var(--gray-color);cursor:not-allowed}.form-section{margin-bottom:2rem}.section-title{margin-bottom:1.5rem;color:var(--secondary-color);font-size:1.25rem}.form-group{margin-bottom:1rem}.form-row{display:flex;gap:1rem;margin-bottom:1rem}.form-row .form-group{flex:1;margin-bottom:0}label{display:block;margin-bottom:.5rem;font-weight:500;font-size:.9rem}.form-input{width:100%;padding:.5rem;border:1px solid var(--border-color);border-radius:4px;font-size:1rem;transition:var(--transition)}.form-input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 2px #4361ee33}select.form-input{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");background-repeat:no-repeat;background-position:right .5rem center;background-size:1rem}.primary-button{background-color:var(--primary-color);color:#fff;border:none;border-radius:4px;padding:.5rem 1rem;font-size:1rem;cursor:pointer;transition:var(--transition)}.primary-button:hover{background-color:var(--secondary-color)}.primary-button:disabled{background-color:var(--gray-color);cursor:not-allowed}.delete-button{background-color:transparent;color:var(--danger-color);border:1px solid var(--danger-color);border-radius:4px;padding:.25rem .5rem;font-size:.8rem;cursor:pointer;transition:var(--transition)}.delete-button.small{padding:.2rem .4rem;font-size:.75rem}.delete-button:hover{background-color:var(--danger-color);color:#fff}.status-badge{display:flex;align-items:center;gap:.5rem;background-color:#fff3;padding:.25rem .5rem;border-radius:20px;font-size:.8rem}.status-dot{display:inline-block;width:8px;height:8px;border-radius:50%}.status-badge.online .status-dot{background-color:#4ade80}.status-badge.offline .status-dot{background-color:var(--gray-color)}.business-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem}.business-card{border:1px solid var(--border-color);border-radius:8px;padding:1rem;transition:var(--transition)}.business-card:hover{transform:translateY(-2px);box-shadow:var(--card-shadow)}.business-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem}.business-header h3{font-size:1.1rem;color:var(--secondary-color)}.business-meta{font-size:.8rem;color:var(--gray-color);margin-bottom:1rem}.articles-preview{font-size:.9rem}.articles-preview h4{margin-bottom:.5rem;font-size:.9rem}.articles-preview ul{list-style:none}.articles-preview li{margin-bottom:.25rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.table-container{overflow-x:auto}.articles-table{width:100%;border-collapse:collapse}.articles-table th,.articles-table td{padding:.75rem;text-align:left;border-bottom:1px solid var(--border-color)}.articles-table th{background-color:#f1f3f9;font-weight:600}.articles-table tr:hover{background-color:#4361ee0d}.empty-state{color:var(--gray-color);font-style:italic;text-align:center;padding:1rem}@media (max-width: 768px){.app-main{padding:1rem}.form-row{flex-direction:column;gap:1rem}.business-grid{grid-template-columns:1fr}}