.sill-mockup {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 720px) {
  .sill-mockup { grid-template-columns: 1fr; }
}

.sill-mockup .controls {
  background: #fff;
  border-radius: 10px;
  padding: 1.25rem;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.sill-mockup .control-group {
  margin-bottom: 1.25rem;
}

.sill-mockup .control-group:last-child { margin-bottom: 0; }

.sill-mockup .control-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #555;
}

.sill-mockup .control-group select {
  width: 100%;
  padding: 0.55rem 0.75rem;
  font-size: 0.95rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
}

.sill-mockup .control-group select:focus {
  outline: 2px solid #3b6fd4;
  outline-offset: 1px;
  border-color: #3b6fd4;
}

.sill-mockup .product-link {
  display: inline-block;
  margin-top: 0.6rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  background-color: rgb(245,154,87);
  border-radius: 35px;
}

.sill-mockup .product-link:hover {
  background-color: rgb(245, 154, 87);
  box-shadow: inset 0 0 0 1000px rgba(0, 0, 0, 0.1);
}

.sill-mockup .preview {
  background: #fff;
  border-radius: 10px;
  padding: 1rem;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.sill-mockup .preview canvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px;
}

.sill-mockup .loading {
  padding: 4rem 1rem;
  text-align: center;
  color: #888;
  font-size: 0.95rem;
}