:root {
  --nav-height: 90px;
  --placeholder-color: #f2f0ec;
  --border-color: #000000;
  --text-dark: #111111;
  --text-muted: #666666;
  --accent-light: #f9f8f6;
}

.product-page-main {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 100px 16px 40px;
}

.product-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
}

.main-image-wrapper {
  width: 100%;
  aspect-ratio: 1/1;
  background: var(--placeholder-color);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.main-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.thumbnail-row {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.thumb-img {
  width: 60px;
  height: 60px;
  object-fit: cover;
  border: 1px solid #eee;
  cursor: pointer;
}

.thumb-img.active {
  border-color: #000;
}

.upload-zone {
  border: 2px dashed #000;
  padding: 24px;
  text-align: center;
  background: var(--accent-light);
  cursor: pointer;
  margin-top: 16px;
}

.upload-icon {
  width: 32px;
  height: 32px;
}

.quantity-selector {
  display: flex;
  border: 1px solid #000;
}

.qty-btn {
  background: none;
  border: none;
  width: 32px;
  cursor: pointer;
}

.qty-input {
  width: 40px;
  text-align: center;
  border: none;
}

.checkout-main-wrapper {
  max-width: 900px;
  margin: 0 auto;
  padding: 100px 16px;
}

.checkout-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 32px;
}

@media(max-width: 768px) {
  .checkout-grid {
    grid-template-columns: 1fr;
  }
}

.form-fields-stack input, .form-section textarea {
  width: 100%;
  padding: 10px;
  margin-bottom: 12px;
  border: 1px solid #000;
  font-size: 1rem;
}

.form-row-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.checkout-summary-box {
  border: 1px solid #000;
  padding: 20px;
  background: var(--accent-light);
}