/* ===== Product Grid ===== */
.product-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.product-card {
  background: var(--color-white); border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: var(--transition); cursor: pointer;
  border: 1px solid rgba(223, 208, 176, 0.3); position: relative;
  touch-action: manipulation; -webkit-tap-highlight-color: transparent;
  container-type: inline-size;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.product-card.sold-out { opacity: 0.6; }
.product-img-wrap { position: relative; aspect-ratio: 1; overflow: hidden; background: var(--color-bg-warm); }
.product-img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.product-card:hover .product-img-wrap img { transform: scale(1.06); }
/* Hover overlay */
.product-card-overlay {
  position: absolute; inset: 0;
  background: rgba(15,10,5,0.85);
  opacity: 0; transition: opacity 0.25s;
  display: flex; flex-direction: column; justify-content: space-between;
  padding: 12px 12px 16px 12px;
  backdrop-filter: blur(4px); z-index: 2;
  border-radius: var(--radius-lg);
}
@media (hover: hover) { .product-card:hover .product-card-overlay { opacity: 1; } }
.product-card.touch-active .product-card-overlay { opacity: 1; }
.product-card.touch-active .product-img-wrap img { transform: scale(1.06); }
.pco-cat { color: rgba(255,255,255,0.65); font-size: clamp(0.55rem, 6cqi, 0.85rem); font-weight: 600; text-align: right; letter-spacing: 0.06em; }
.pco-title { color: #fff; font-size: clamp(0.65rem, 11cqi, 1.9rem); font-weight: 900; line-height: 1.1; letter-spacing: -0.02em; font-family: var(--font-serif); flex: 1; display: flex; align-items: center; padding: 4px 0; word-break: break-all; }
.pco-meta-row { display: flex; gap: 0; border-top: 1px solid rgba(255,255,255,0.25); padding-top: 10px; margin-bottom: 8px; }
.pco-meta-col { flex: 1; }
.pco-meta-label { color: rgba(255,255,255,0.55); font-size: clamp(0.5rem, 5.5cqi, 0.82rem); font-weight: 600; margin-bottom: 3px; }
.pco-meta-val { color: #f5d68a; font-size: clamp(0.6rem, 8cqi, 1.2rem); font-weight: 900; }
.pco-detail-row { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.pco-detail-col { border: 1px solid rgba(255,255,255,0.25); border-radius: 6px; padding: clamp(4px, 2cqi, 8px) clamp(4px, 2.5cqi, 10px); display: flex; align-items: center; justify-content: center; min-height: clamp(28px, 15cqi, 52px); }
.pco-detail-label { color: rgba(255,255,255,0.75); font-size: clamp(0.5rem, 6cqi, 1.05rem); font-weight: 700; text-align: center; }
.pco-detail-text { color: #fff; font-size: clamp(0.5rem, 6cqi, 1.05rem); font-weight: 700; line-height: 1.45; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; white-space: pre-wrap; }
.product-status { position: absolute; top: 10px; right: 10px; padding: 4px 12px; border-radius: 20px; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.05em; }
.status-現貨, .status-缺貨 { color: #fff; }
.status-現貨 { background: #22c55e; }
.status-缺貨 { background: #94a3b8; }

/* ===== Product Detail Modal ===== */
.product-modal {
  position: fixed; inset: 0; display: none; align-items: center; justify-content: center;
  background: rgba(8, 6, 3, 0.78); z-index: 2050; padding: 20px;
}
.product-modal.open { display: flex; }
.product-modal-card {
  width: min(720px, 100%); max-height: calc(100vh - 40px); overflow: auto;
  background: var(--color-white); border-radius: var(--radius-xl); position: relative;
}
.product-modal-close { touch-action: manipulation; -webkit-tap-highlight-color: transparent;
  position: absolute; top: 14px; right: 14px; width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid var(--color-border); background: var(--color-bg-cream); color: var(--color-dark);
  display: flex; align-items: center; justify-content: center; z-index: 10; cursor: pointer;
}
.product-modal-img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: var(--radius-xl) var(--radius-xl) 0 0; }
.product-modal-body { padding: 16px 28px 28px; }
.product-modal-title { font-family: var(--font-serif); font-size: 1.5rem; font-weight: 700; color: var(--color-dark); margin-bottom: 0; }
.pm-header-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.product-modal-cat { font-size: 0.88rem; color: var(--color-text-muted); background: var(--color-bg-cream); border: 1px solid var(--color-border); padding: 3px 12px; border-radius: 20px; flex-shrink: 0; }
.pm-detail-row { display: flex; gap: 24px; margin-bottom: 4px; }
.pm-detail-row > div { flex: 1; }
.product-modal-price { font-family: var(--font-serif); font-size: 1.6rem; font-weight: 700; color: var(--color-gold-dark); margin-bottom: 16px; }
.product-modal-price::before { content: 'NT$'; font-size: 1rem; }
.product-modal-label { font-weight: 600; font-size: 0.95rem; color: var(--color-dark); margin-bottom: 6px; }
.product-modal-text { font-size: 0.95rem; color: var(--color-text-light); line-height: 1.7; margin-bottom: 16px; white-space: pre-wrap; }
.modal-qty-row { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.modal-qty-label { font-weight: 600; font-size: 0.95rem; color: var(--color-dark); }
.modal-qty-ctrl { display: flex; align-items: center; gap: 0; border: 1.5px solid var(--color-border); border-radius: var(--radius-md); overflow: hidden; }
.modal-qty-ctrl button { width: 46px; height: 46px; background: var(--color-bg-cream); border: none; font-size: 1.25rem; font-weight: 700; color: var(--color-dark); cursor: pointer; display: flex; align-items: center; justify-content: center; transition: background 0.12s; touch-action: manipulation; -webkit-tap-highlight-color: transparent; user-select: none; }
.modal-qty-ctrl button:hover:not(:disabled) { background: var(--color-border); }
.modal-qty-ctrl button:active:not(:disabled) { background: var(--color-gold-dark); color: #fff; transform: scale(0.92); }
.modal-qty-ctrl button:disabled { opacity: 0.35; cursor: not-allowed; }
.modal-qty-num { min-width: 48px; text-align: center; font-size: 1.05rem; font-weight: 700; color: var(--color-dark); border-left: 1.5px solid var(--color-border); border-right: 1.5px solid var(--color-border); height: 46px; line-height: 46px; touch-action: manipulation; user-select: none; }
.product-modal-actions { display: flex; gap: 12px; margin-top: 20px; }
.btn-add-cart { flex: 1; padding: 14px; border-radius: var(--radius-md); background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark)); color: #fff; font-size: 1rem; font-weight: 700; display: flex; align-items: center; justify-content: center; gap: 8px; transition: var(--transition); touch-action: manipulation; -webkit-tap-highlight-color: transparent; user-select: none; }
.btn-add-cart:hover { box-shadow: var(--shadow-gold); transform: translateY(-1px); }
.btn-add-cart:active:not(:disabled) { transform: scale(0.97); }
.btn-add-cart:disabled { opacity: 0.4; cursor: not-allowed; transform: none; box-shadow: none; }

/* ===== Cart Icon (fixed) ===== */
.cart-fab {
  position: fixed; bottom: 28px; right: 28px; z-index: 1500;
  width: 56px; height: 56px; border-radius: 50%;
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: #fff; font-size: 1.3rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(201,168,76,0.5); transition: var(--transition);
  touch-action: manipulation; -webkit-tap-highlight-color: transparent;
}
.cart-fab:hover { transform: scale(1.1); }
.cart-badge {
  position: absolute; top: -4px; right: -4px; min-width: 20px; height: 20px;
  background: #ef4444; color: #fff; font-size: 0.7rem; font-weight: 700;
  border-radius: 10px; display: flex; align-items: center; justify-content: center;
  padding: 0 5px;
}
.cart-badge:empty { display: none; }

/* ===== Cart Sidebar ===== */
.cart-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 2100; display: none; }
.cart-overlay.open { display: block; }
.cart-sidebar {
  position: fixed; top: 0; right: -400px; width: min(400px, 90vw); height: 100vh;
  background: var(--color-white); z-index: 2200; display: flex; flex-direction: column;
  box-shadow: -4px 0 24px rgba(0,0,0,0.15); transition: right 0.3s ease;
}
.cart-sidebar.open { right: 0; }
.cart-header { padding: 20px 24px; border-bottom: 1px solid var(--color-border); display: flex; justify-content: space-between; align-items: center; }
.cart-header h3 { font-family: var(--font-serif); font-size: 1.2rem; color: var(--color-dark); }
.cart-close { width: 32px; height: 32px; border-radius: 50%; border: 1px solid var(--color-border); display: flex; align-items: center; justify-content: center; color: var(--color-text-muted); touch-action: manipulation; -webkit-tap-highlight-color: transparent; cursor: pointer; }
.cart-items { flex: 1; overflow-y: auto; padding: 16px 24px; }
.cart-empty { text-align: center; color: var(--color-text-muted); padding: 40px 0; font-size: 0.95rem; }
.cart-item { display: flex; gap: 12px; padding: 14px 0; border-bottom: 1px solid rgba(223,208,176,0.3); }
.cart-item-img { width: 64px; height: 64px; border-radius: var(--radius-md); object-fit: cover; flex-shrink: 0; }
.cart-item-info { flex: 1; min-width: 0; }
.cart-item-title { font-size: 0.9rem; font-weight: 600; color: var(--color-dark); margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cart-item-price { font-size: 0.85rem; color: var(--color-gold-dark); font-weight: 600; }
.cart-item-qty { display: flex; align-items: center; gap: 8px; margin-top: 6px; }
.cart-item-qty button { width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--color-border); background: var(--color-bg-cream); font-size: 1rem; font-weight: 700; display: flex; align-items: center; justify-content: center; touch-action: manipulation; -webkit-tap-highlight-color: transparent; user-select: none; cursor: pointer; transition: background 0.12s; }
.cart-item-qty button:active { background: var(--color-gold-dark); color: #fff; transform: scale(0.9); }
.cart-item-qty span { font-size: 0.88rem; min-width: 20px; text-align: center; }
.cart-item-remove { color: var(--color-text-muted); font-size: 0.8rem; padding: 8px; align-self: flex-start; touch-action: manipulation; -webkit-tap-highlight-color: transparent; user-select: none; cursor: pointer; }
.cart-item-remove:active { color: #ef4444; transform: scale(0.9); }
.cart-item-remove:hover { color: #ef4444; }
.cart-footer { padding: 20px 24px; border-top: 1px solid var(--color-border); }
.cart-total { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.cart-total-label { font-size: 1rem; font-weight: 600; color: var(--color-dark); }
.cart-total-price { font-family: var(--font-serif); font-size: 1.3rem; font-weight: 700; color: var(--color-gold-dark); }
.btn-checkout { width: 100%; padding: 14px; border-radius: var(--radius-md); background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark)); color: #fff; font-size: 1rem; font-weight: 700; display: flex; align-items: center; justify-content: center; gap: 8px; transition: var(--transition); }
.btn-checkout:hover { box-shadow: var(--shadow-gold); }
.btn-checkout:disabled { opacity: 0.4; cursor: not-allowed; }

/* ===== Checkout Modal ===== */
.checkout-modal {
  position: fixed; inset: 0; display: none; align-items: center; justify-content: center;
  background: rgba(8,6,3,0.78); z-index: 2300; padding: 20px;
}
.checkout-modal.open { display: flex; }
.checkout-card {
  width: min(500px, 100%); max-height: calc(100vh - 40px); overflow: auto;
  background: var(--color-white); border-radius: var(--radius-xl); padding: 32px;
}
.checkout-title { font-family: var(--font-serif); font-size: 1.4rem; font-weight: 700; color: var(--color-dark); margin-bottom: 8px; text-align: center; }
.checkout-subtitle { font-size: 0.88rem; color: var(--color-text-muted); text-align: center; margin-bottom: 24px; }
.checkout-form .form-group { margin-bottom: 16px; }
.checkout-form label { display: block; font-size: 0.88rem; font-weight: 600; color: var(--color-dark); margin-bottom: 6px; }
.checkout-form input, .checkout-form textarea {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--color-border); border-radius: var(--radius-md);
  font-size: 0.92rem; color: var(--color-text); background: var(--color-bg-cream); transition: var(--transition);
}
.checkout-form input:focus, .checkout-form textarea:focus { border-color: var(--color-gold); outline: none; box-shadow: 0 0 0 3px rgba(201,168,76,0.15); }
.checkout-summary { background: var(--color-bg-warm); border-radius: var(--radius-md); padding: 16px; margin-bottom: 20px; }
.checkout-summary-row { display: flex; justify-content: space-between; font-size: 0.88rem; color: var(--color-text-light); padding: 4px 0; }
.checkout-summary-total { display: flex; justify-content: space-between; font-size: 1.1rem; font-weight: 700; color: var(--color-gold-dark); border-top: 1px solid var(--color-border); padding-top: 10px; margin-top: 8px; }
.checkout-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 20px; }
.checkout-actions > button { width: 100%; min-width: 0; }
.checkout-actions .btn-cancel { padding: 14px 24px; border-radius: var(--radius-md); border: 1.5px solid var(--color-border); color: var(--color-text-muted); font-weight: 600; }
.checkout-success { display: none; text-align: center; padding: 40px 20px; }
.checkout-success i { font-size: 3rem; color: #22c55e; margin-bottom: 16px; }
.checkout-success h4 { font-family: var(--font-serif); font-size: 1.3rem; margin-bottom: 8px; }
.checkout-success p { color: var(--color-text-muted); font-size: 0.92rem; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .product-modal-card { width: 100%; }
  .product-modal-img { aspect-ratio: 1/1; }
  .product-modal-body { padding: 14px 18px 22px; }
  .product-modal-title { font-size: 1.4rem; }
  .product-modal-cat { font-size: 0.82rem; }
  .pm-detail-row { gap: 16px; }
  .product-modal-price { font-size: 1.5rem; margin-bottom: 14px; }
  .product-modal-label { font-size: 1rem; margin-bottom: 5px; }
  .product-modal-text { font-size: 1rem; line-height: 1.8; margin-bottom: 14px; }
  .product-modal-actions { margin-top: 16px; }
  .cart-fab { bottom: 20px; right: 20px; width: 50px; height: 50px; font-size: 1.1rem; }
}
@media (max-width: 480px) {
  .product-grid { grid-template-columns: 1fr; }
  .product-modal { padding: 10px; }
  .product-modal-body { padding: 18px; }
  .product-modal-title { font-size: 1.3rem; }
  .product-modal-price { font-size: 1.4rem; }
  .pco-detail-row { grid-template-columns: 1fr; }
}