:root{--primary-color: #3498db;--secondary-color: #2c3e50;--danger-color: #e74c3c;--success-color: #2ecc71;--light-color: #ecf0f1;--dark-color: #34495e}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;background-color:#f9f9f9;color:var(--dark-color)}.container{max-width:1200px;margin:0 auto;padding:2rem}h1{text-align:center;margin-bottom:2rem;color:var(--secondary-color)}.form-container{background-color:#fff;border-radius:8px;padding:2rem;box-shadow:0 4px 6px #0000001a;margin-bottom:2rem}.form-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.form-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1.5rem;margin-bottom:1.5rem}.form-group{display:flex;flex-direction:column}label{margin-bottom:.5rem;font-weight:600;font-size:.9rem}input,select{padding:.75rem;border:1px solid #ddd;border-radius:4px;font-size:1rem;transition:border-color .3s}input:focus,select:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 2px #3498db33}.sample-btn{background-color:var(--light-color);color:var(--dark-color);border:none;padding:.5rem 1rem;border-radius:4px;cursor:pointer;font-size:.9rem;transition:background-color .3s}.sample-btn:hover{background-color:#d0d3d4}.submit-btn{background-color:var(--primary-color);color:#fff;border:none;padding:1rem 2rem;font-size:1rem;border-radius:4px;cursor:pointer;width:100%;font-weight:600;transition:background-color .3s}.submit-btn:hover{background-color:#2980b9}.submit-btn:disabled{background-color:#95a5a6;cursor:not-allowed}.error-msg{background-color:#fadbd8;border-left:4px solid var(--danger-color);padding:1rem;border-radius:4px;margin-bottom:2rem}.result{background-color:#fff;border-radius:8px;padding:2rem;box-shadow:0 4px 6px #0000001a}.result h2{margin-bottom:1rem;text-align:center}.result-content{display:flex;flex-direction:column;align-items:center;gap:1rem}.prediction{font-size:1.2rem}.prediction strong{font-size:1.4rem}.confidence{font-size:1rem;color:#7f8c8d}.fraud{border-top:4px solid var(--danger-color)}.legitimate{border-top:4px solid var(--success-color)}.fraud .prediction strong{color:var(--danger-color)}.legitimate .prediction strong{color:var(--success-color)}@media (max-width: 768px){.form-grid{grid-template-columns:1fr}.form-header{flex-direction:column;gap:1rem}.container{padding:1rem}}