:root{font-family:Inter,Arial,sans-serif;color:#172033;background:#f4f6f9}*{box-sizing:border-box}body{margin:0}header{background:#172033;color:white;padding:14px 24px;display:flex;justify-content:space-between;gap:20px;align-items:center}header nav{display:flex;gap:16px;flex-wrap:wrap}header a{color:white;text-decoration:none}main{max-width:1400px;margin:auto;padding:24px}.cards{display:grid;grid-template-columns:repeat(3,minmax(180px,1fr));gap:16px}.card{background:white;border-radius:12px;padding:20px;box-shadow:0 2px 8px #0001}.card strong{display:block;font-size:28px;margin-top:8px}.flash{padding:12px;background:#e8f5e9;border-radius:8px;margin-bottom:16px}details{background:white;padding:16px;border-radius:10px;margin:16px 0}summary{font-weight:700;cursor:pointer}.grid-form{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:16px}.grid-form label{display:flex;flex-direction:column;font-size:13px;font-weight:600;gap:5px}.grid-form .wide{grid-column:span 2}input,select,textarea{padding:10px;border:1px solid #ccd2dc;border-radius:7px;font:inherit}textarea{min-height:70px}button{background:#172033;color:white;border:0;border-radius:7px;padding:10px 14px;cursor:pointer}.table-wrap{overflow:auto;background:white;border-radius:10px;margin-top:14px}table{width:100%;border-collapse:collapse;background:white}th,td{padding:11px;border-bottom:1px solid #e5e8ee;text-align:left;white-space:nowrap}th{background:#eef1f5}.warn{color:#a33}.invoice{background:white;padding:24px;border-radius:10px}.invoice-head{display:flex;justify-content:space-between}.totals{text-align:right;font-size:18px}@media(max-width:850px){header{align-items:flex-start;flex-direction:column}.cards{grid-template-columns:1fr}.grid-form{grid-template-columns:1fr}.grid-form .wide{grid-column:span 1}main{padding:14px}}