:root{--primary-color: #0077cc;--primary-hover: #005fa3;--secondary-color: #F0F9FF;--card-bg: #ffffff;--card-shadow: rgba(0, 0, 0, .1);--text-color: #333333;--text-muted: #555555;--success-color: #28a745;--error-color: #dc3545}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:var(--secondary-color)!important;color:var(--text-color);margin:0;padding:0}header{display:flex;justify-content:space-between;padding:1rem;background-color:#e0f2fe;box-shadow:0 2px 5px #0000001a}input,button{padding:.5rem;margin:1rem;border-radius:.25rem;border:1px solid #ccc}button{cursor:pointer}button{background-color:var(--primary-color);color:#fff;border:none;border-radius:8px;padding:8px 16px;cursor:pointer;transition:background-color .2s ease}button:hover{background-color:var(--primary-hover)}button:disabled{background-color:#999;cursor:not-allowed}.grid{display:grid;gap:1rem}.grid-3{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.card{background:#fff;padding:1rem;border-radius:.5rem;box-shadow:0 2px 5px #0000001a}.card img{width:100%;height:180px;object-fit:cover;border-radius:.5rem}.modal{position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center}.modal-content{background:#fff;padding:1rem;border-radius:.5rem;width:100%;max-width:400px}