.calculator{background:#fff;border-radius:10px;padding:1rem;box-shadow:0 2px 16px #00000014;overflow:hidden}.full-width-add-btn{width:100%;padding:.4rem 0;font-size:2rem;color:#000;border:none;border-radius:8px;cursor:pointer;border:2px solid #000;background-color:transparent}.delete-btn{display:inline-block;border-radius:10%;border:none;background-color:red;padding:1rem;color:#fff;cursor:pointer}.calculator-select{width:100%;padding:.8rem 1rem;border:1px solid #ccc;border-radius:6px;background:#f9f9f9;font-size:1rem;color:#333;outline:none;transition:border-color .2s}.calculator-select:focus{border-color:#007bff;background:#fff}.material-item{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1rem}.material-length-items{display:flex;flex-direction:column;gap:1rem;padding:0 1rem;margin-bottom:1rem}.material-length-header{display:flex;justify-content:space-between;align-items:center}.material-length-item{display:flex;justify-content:space-between;align-items:center;gap:1rem}.material-length-item input{width:100%;padding:.8rem 1rem;border:1px solid #ccc;border-radius:6px;background:#f9f9f9;font-size:1rem;color:#333;outline:none}.calculator-result{border-radius:8px;margin-top:1.5rem;padding:1rem;font-size:1.2rem;font-weight:700;color:#1a3d1a;box-shadow:0 1px 8px #228b2214;min-height:2.5rem;display:flex;flex-direction:column;gap:1rem;text-align:left}.calculator-result>div{margin-bottom:.5rem}*{box-sizing:border-box}body{margin:0;padding:0;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:#f5f5f5;line-height:1.6}.container{min-height:100vh;padding:20px}.hidden{display:none!important}.container{margin:10px auto;max-width:900px}.tabs{display:flex;justify-content:center;gap:20px;margin-bottom:20px}.tab{padding:10px 28px;border:none;background:#edeaf6;color:#3a3551;font-size:17px;font-weight:500;border-radius:8px;cursor:pointer;transition:background .2s,color .2s;outline:none;box-shadow:0 2px 8px #3a35510a}.tab:hover,.tab:focus{background:#d1cbe9;color:#2a2540}.tab.active{background:#3a3551;color:#fff;font-weight:600;box-shadow:0 4px 16px #3a355114;z-index:2}.table-container{margin:40px auto;max-width:900px;background:#fff;border-radius:10px;box-shadow:0 2px 16px #00000014;overflow:hidden}#metall-table{width:100%;border-collapse:collapse;font-family:Segoe UI,Arial,sans-serif;font-size:16px;background:#fff}#metall-table thead tr{background:#3a3551;color:#fff}#metall-table th{padding:16px 12px;font-weight:600;text-align:left;border-bottom:2px solid #eaeaea;font-size:17px}#metall-table tbody tr{border-bottom:1px solid #eaeaea}#metall-table td{padding:14px 12px;color:#333;background:#faf9fd;font-size:16px}#metall-table tbody tr:nth-child(2n) td{background:#f3f2f7}#metall-table tbody th{background:#edeaf6;color:#3a3551;font-size:18px;padding:14px 12px;text-align:left;font-weight:700;border-bottom:1px solid #eaeaea}.loading,.error{text-align:center;margin:30px 0;font-size:18px;padding:20px;border-radius:8px}.loading{background-color:#e3f2fd;color:#1976d2;border:1px solid #bbdefb}.error{background-color:#ffebee;color:#b00020;border:1px solid #ffcdd2}@media (max-width: 768px){.table-container{margin:20px 10px;border-radius:6px}#metall-table th,#metall-table td{padding:12px 8px;font-size:14px}#metall-table tbody th{font-size:16px}}