:root{--navy:#082d5b;--red:#e31b23;--bg:#f5f7fa;--line:#dfe6ee;--text:#172536}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}
.topbar{background:var(--navy);color:#fff;padding:16px 28px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.brand{display:flex;gap:12px;align-items:center}.brand .mark{background:#fff;color:var(--navy);font-weight:800;padding:10px;border-radius:8px}.brand span{display:block;font-size:12px;opacity:.85;margin-top:3px}
nav{display:flex;gap:14px;flex-wrap:wrap}nav a{color:#fff;text-decoration:none;font-size:14px}.container{max-width:1120px;margin:30px auto;padding:0 18px}
h1{color:var(--navy);font-size:28px}h2{color:var(--navy)}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:0 8px 22px rgba(8,45,91,.06)}
.metric{font-size:30px;font-weight:800;color:var(--navy)}.muted{color:#657383;font-size:13px}
table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line)}th,td{padding:12px;border-bottom:1px solid var(--line);text-align:left;font-size:14px}th{background:#eef3f8;color:var(--navy)}
.btn{display:inline-block;border:none;background:var(--navy);color:#fff;padding:10px 16px;border-radius:8px;text-decoration:none;cursor:pointer}.btn.red{background:var(--red)}.btn.light{background:#eaf0f6;color:var(--navy)}
form.card{max-width:760px}.field{margin-bottom:16px}.field label{display:block;font-weight:700;margin-bottom:6px;color:var(--navy)}input,select,textarea{width:100%;padding:11px;border:1px solid #cbd6e2;border-radius:8px;background:#fff}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.flash{background:#e8f4ed;border:1px solid #b9dcc7;padding:12px;border-radius:8px;margin-bottom:18px}
footer{text-align:center;color:#66788a;font-size:12px;padding:30px}.receipt{max-width:850px;margin:auto;background:#fff;border:1px solid var(--line);padding:34px}.receipt-head{display:flex;justify-content:space-between;border-bottom:3px solid var(--navy);padding-bottom:16px}.receipt-title{font-size:26px;font-weight:800;color:var(--navy)}.total{font-size:24px;color:var(--red);font-weight:800;text-align:right}
.actions{display:flex;gap:10px;margin:18px 0;flex-wrap:wrap}
@media(max-width:800px){.grid{grid-template-columns:1fr 1fr}.row{grid-template-columns:1fr}.topbar{align-items:flex-start}}
@media(max-width:520px){.grid{grid-template-columns:1fr}}
@media print{.topbar,footer,.actions,h1{display:none}.container{max-width:none;margin:0;padding:0}.receipt{border:none;box-shadow:none}}