/* Minimal, nette styling met focus op responsive gedrag */
:root{
  --mint:#e6fff6;
  --ink:#0f172a;
  --muted:#475569;
  --accent:#10b981;
  --border:#e2e8f0;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:white}
.wrap{width:min(1080px,100%);padding:0 16px;margin:0 auto}
.site-header{background:var(--mint);border-bottom:1px solid var(--border)}
.site-header h1{margin:0;padding:20px 0 4px;font-weight:800;letter-spacing:.2px}
.subtitle{margin:0 0 16px;color:var(--muted)}

.grid{display:grid;gap:24px;grid-template-columns:1.2fr .8fr;margin:24px 0 48px}
.product{display:grid;grid-template-columns:180px 1fr;gap:16px;align-items:start;background:#fff;border:1px solid var(--border);border-radius:16px;padding:16px}
.product-img{width:100%;border-radius:12px;border:1px solid var(--border);object-fit:cover;aspect-ratio:3/4;background:#f8fafc}
.product-info h2{margin:0 0 8px}
.bullets{margin:0;padding-left:18px;color:var(--muted)}
.order{background:#fff;border:1px solid var(--border);border-radius:16px;padding:16px}
.order h2{margin-top:0}
.row{display:flex;flex-direction:column;gap:8px;margin:12px 0}
input[type="text"],input[type="email"],input[type="number"]{
  border:1px solid var(--border);border-radius:12px;padding:12px 14px;font-size:16px;outline:none;
}
input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(16,185,129,.15)}
.total{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border:1px dashed var(--border);border-radius:12px;margin:12px 0;font-size:18px}
.btn-primary{
  background:var(--accent);color:white;border:none;border-radius:999px;padding:14px 18px;font-weight:700;
  cursor:pointer;font-size:16px;transition:transform .06s ease, box-shadow .2s;
  box-shadow:0 6px 14px rgba(16,185,129,.25);
}
.btn-primary:active{transform:translateY(1px)}
.tiny{color:var(--muted);font-size:12px;margin-top:8px}
.result{margin-top:12px;padding:12px 14px;border:1px solid var(--border);border-radius:12px;background:#f8fafc}
.site-footer{border-top:1px solid var(--border);padding:16px 0 32px;color:var(--muted)}

.invalid {
  border-color: #ef4444 !important;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, .15) !important;
}

@media (max-width: 900px){
  .grid{grid-template-columns:1fr}
  .product{grid-template-columns:120px 1fr}
}
@media (max-width: 480px){
  .product{grid-template-columns:1fr}
}