:root{font-family:system-ui,sans-serif;line-height:1.4;color:#0f172a;background:#f8fafc}body{margin:0}header.nav{display:flex;gap:1rem;align-items:center;padding:.75rem 1.25rem;background:#0f172a;color:#f8fafc}header.nav a{color:#93c5fd;text-decoration:none}header.nav a.active{font-weight:700;color:#fff}main{padding:1.25rem;max-width:1100px}.err{background:#fef2f2;color:#991b1b;padding:.75rem 1rem;border-radius:6px;margin-bottom:1rem}table{width:100%;border-collapse:collapse;background:#fff;box-shadow:0 1px 3px #00000014}th,td{border:1px solid #e2e8f0;padding:.5rem .6rem;text-align:left;font-size:.85rem}th{background:#f1f5f9}button{cursor:pointer;padding:.35rem .65rem;border-radius:4px;border:1px solid #cbd5e1;background:#fff}button.primary{background:#2563eb;color:#fff;border-color:#1d4ed8}.form-grid label{display:flex;flex-direction:column;gap:.2rem;margin-bottom:.65rem;font-size:.85rem}.form-grid input{padding:.35rem .5rem}