*{box-sizing:border-box}body{margin:0;background:#f3f5f8;color:#202938;font:15px Arial,sans-serif}header{background:#172b4d;color:white;padding:16px 22px;display:flex;justify-content:space-between}header a{color:white}nav{background:#fff;padding:10px;display:flex;gap:8px;flex-wrap:wrap;box-shadow:0 2px 5px #ddd}nav a{padding:9px 12px;background:#eaf0f8;border-radius:6px;color:#17365d;text-decoration:none}main{padding:20px;max-width:1400px;margin:auto}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}.card,.panel{background:white;padding:18px;border-radius:10px;box-shadow:0 2px 10px #0001}.card h2{margin-bottom:0}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px;background:white;padding:16px;border-radius:10px;margin-bottom:20px}label{display:flex;flex-direction:column;gap:6px}input,select,button{padding:11px;border:1px solid #ccd3dc;border-radius:6px;font:inherit}button{background:#1458a6;color:white;border:0;cursor:pointer;margin-top:8px}table{border-collapse:collapse;width:100%;background:white;margin:12px 0}th,td{padding:10px;border-bottom:1px solid #e3e6eb;text-align:left}th{background:#eaf0f8}.tablewrap{overflow:auto}.ok{background:#d9f7e5;padding:10px}.err{background:#ffe0e0;padding:10px}.login{min-height:100vh;display:grid;place-items:center}.login .panel{width:min(92%,380px);display:grid;gap:12px}.invoice{background:white;max-width:760px;margin:20px auto;padding:24px}.center{text-align:center}.right{text-align:right}.no-print{display:inline-block;margin:10px;padding:10px;background:#1458a6;color:white;text-decoration:none;border:0;border-radius:5px}@media print{body{background:white}.invoice{margin:0;padding:0;max-width:none}.no-print{display:none!important}nav,header{display:none}}@media(max-width:600px){main{padding:10px}header{padding:12px;font-size:13px}.invoice{padding:10px}th,td{padding:6px;font-size:12px}}