:root{font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;color:#1f2937;background:#f5f7fb}*{box-sizing:border-box}body{margin:0}body.center{min-height:100vh;display:grid;place-items:center;padding:20px}header{display:flex;justify-content:space-between;align-items:center;padding:16px 5%;background:#111827;color:#fff}nav{display:flex;gap:12px;align-items:center}a{color:inherit;text-decoration:none}main{width:min(1180px,92%);margin:32px auto}.card{background:white;border-radius:16px;padding:22px;box-shadow:0 8px 24px rgba(0,0,0,.06)}.login{width:min(420px,100%)}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px}.products{margin-top:20px}label{display:grid;gap:7px;font-weight:600}input,button{font:inherit;padding:11px 12px;border-radius:10px;border:1px solid #d1d5db}button{background:#111827;color:#fff;cursor:pointer;border:none}button:disabled{opacity:.5;cursor:not-allowed}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px;align-items:end}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse}th,td{padding:12px;border-bottom:1px solid #e5e7eb;text-align:left;white-space:nowrap}.inline{display:flex;gap:8px}.alert{padding:12px;border-radius:10px;margin:10px 0}.error{background:#fee2e2;color:#991b1b}.success{background:#dcfce7;color:#166534}.price{font-size:1.6rem;font-weight:800}@media(max-width:700px){header{align-items:flex-start;gap:12px;flex-direction:column}.inline{flex-direction:column}}