/* 商品後台基本樣式 */
* { box-sizing: border-box; }

body {
  font-family: system-ui, "Microsoft JhengHei", sans-serif;
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  background: #f5f5f5;
}

header h1 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  color: #333;
}

/* Magic Link 登入區 */
.auth-section {
  margin-bottom: 1.5rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid #e5e7eb;
}
.auth-login label,
.auth-login input,
.auth-user {
  display: inline-block;
  vertical-align: middle;
}
.auth-login input[type="email"] {
  padding: 0.4rem 0.6rem;
  margin-right: 0.5rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  width: 200px;
}
#auth-send, #auth-signout {
  padding: 0.4rem 0.8rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  background: #2563eb;
  color: #fff;
  font-size: 0.9rem;
}
#auth-send:hover, #auth-signout:hover {
  background: #1d4ed8;
}
.auth-message {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
  color: #059669;
}
.auth-message.error { color: #dc2626; }
.auth-user strong { color: #111; }
#auth-signout { margin-left: 0.75rem; }

.form-section, .list-section {
  background: #fff;
  padding: 1.25rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.form-section h2, .list-section h2 {
  margin: 0 0 1rem;
  font-size: 1.1rem;
  color: #444;
}

#product-form label {
  display: block;
  margin-bottom: 0.75rem;
}

#product-form input[type="text"],
#product-form input[type="number"] {
  width: 100%;
  padding: 0.5rem 0.75rem;
  margin-top: 0.25rem;
  border: 1px solid #ccc;
  border-radius: 4px;
}

#product-form button, .item-actions button {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.95rem;
}

#btn-submit, .btn-edit {
  background: #2563eb;
  color: #fff;
}

#btn-submit:hover, .btn-edit:hover {
  background: #1d4ed8;
}

#btn-cancel, .btn-delete {
  background: #6b7280;
  color: #fff;
}

.btn-delete {
  background: #dc2626;
}

.btn-delete:hover {
  background: #b91c1c;
}

#btn-cancel.secondary {
  background: #9ca3af;
  margin-left: 0.5rem;
}

#loading-msg {
  color: #6b7280;
  margin: 0;
}

#product-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

#product-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem;
  border-bottom: 1px solid #eee;
  gap: 0.5rem;
}

#product-list li:last-child {
  border-bottom: none;
}

.item-info {
  flex: 1;
  min-width: 0;
}

.item-info strong { color: #111; }
.item-info .price { color: #059669; }
.item-info .quantity { color: #6b7280; font-size: 0.9rem; }

.item-actions {
  display: flex;
  gap: 0.5rem;
}

.item-actions button {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
}

#product-list:empty::after {
  content: "尚無商品，請在上方新增。";
  display: block;
  color: #6b7280;
  padding: 1rem 0;
}